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Home My WebLink AboutSED Assessment Our Island Home Report April 2014OUR ISLAND HOME Existing Building Systems Evaluations Our Island Home Town of Nantucket 9 East Creek Road Nantucket, MA 02554 SED Associates Corp. 132 Lincoln Street Boston, MA 02111 April 2014 Page 2 of 56 REPORT TABLE OF CONTENTS PAGE I. EXECUTIVE SUMMARY…………………………………… 3 II. INTRODUCTION…………………………………………….. 5 III. OBSERVATIONS- EXISTING CONDITIONS……………... 6-10 IV EVALUATED SYSTEMS DESCRIPTIONS…………….…. 11-14 V. CONCLUSIONS and RECOMMENDATIONS………….…. 14-17 APPENDICES:……………………………………………………….. 18 A. Observed Temperatures……………………………………… 19 B. Existing Equipment Inventory………………………………. 20-40 Boiler (B-1)…………………………………………………… 20 Boiler (B-2)……………………………………………………. 21 Boiler (B-3)…………………………………………………… 22 Combustion Exhaust Fan…………………………………….. 23 Fuel Oil Pumps………………………………………….…… 24 Main Hot Water Circulation Pumps…………………….…… 25 Common Area 3-ton Ductless AC Units…………………….. 26 Common Area 5-ton Ductless AC Units…………………….. 27 Core Area AC………………………………………………… 28 Kitchen Area Ductless AC Units…………………………….. 29 Heat Recovery Ventilator…………………………………….. 30 Zone Hot Water Circulation Pumps………………………….. 31 Dining Room Zone Circulation Pump……………………….. 32 Resident Rooms Fin Tube Radiation & Thermostats……….. 33 Dining Room Fin Tube Radiation & Thermostats…….…….. 34 Laundry Area Fans & Hoods…………………………………. 35 Kitchen Hood Make-up Air Unit……………………………… 36 Kitchen Area Exhaust Fans…………………………………… 37 Domestic Hot Water Heaters (Direct Fired Type)…..………… 38 Domestic Hot Water Heaters (Storage Type)………………… 39 Attic Mechanical Room Exhaust Fan………………………… 40 C. 2013 Energy Usage Summary………………………………… 41 D. HVAC Loads Analysis………………………………………… 42-48 E. Domestic Water Storage Tank Analysis……………………… 49 F. Energy Conservation Measures………………………………. 50-53 G. System Budget Costs…………………………………………. 54-56 Page 3 of 56 I. EXECUTIVE SUMMARY SED Associates Corp. was retained by the Town of Nantucket to perform an assessment of the Our Island Home (OIH) existing HVAC, plumbing and electrical systems present conditions. Its expected useful life and applicable energy conservation measures. The assessment was performed at the Client's request using methods and procedures consistent with standard industry procedures. This report is exclusively for the use and benefit of the Client. This report is not for the use or benefit of, nor may it be relied upon by any other person or entity, for any purpose without the advance written consent of SED. Summary of Existing Energy Performance Building's Annual Energy Consumption 4,459,830 kBtu Total Annual Energy Costs $137,859 SED has determined that the facility current heating boilers are insufficient to meet existing heating demand, see Appendix D HVAC Load Analysis. SED has identified four Energy Conservation Measures (ECMs) for this property. The savings for each measure are calculated using standard engineering methods followed in the industry, and detailed calculations for ECM are provided in Appendix F for reference. In addition to the consideration of the interactive effects, SED has applied a 10% contingency to the implementation costs to account for potential cost overruns during the implementation of the ECMs. The following table summarizes the recommended ECMs in terms of description, investment cost, energy consumption reduction, and cost savings. Summary of Recommended Energy Conservation Measures (ECM #3 & #4) Total Projected ECM Initial Investment $34,900 Estimated Annual Cost Savings $9,919 Net Effective Payback 3.5yrs. Estimated Annual Energy Savings 16% Estimated Annual Cost Savings 7% Page 4 of 56 SED recommendation based upon our evaluations and analysis; and to combine the above noted ECM’s with the following system replacement/upgrades: 1. Replace the existing individual fin-tube radiation self-contained thermostats. 2. Replace the existing central heat recovery unit with three (3) new DOAS-ERV. 3. Replace the existing boiler heating, domestic hot water heaters and pumps. . 4. Replace fuel oil circulation pump, OP-1. 5. Replace existing propane direct fired domestic hot water heaters. Current Massachusetts Department of Public Health (DPH) requirement is to have air conditioning in all residence areas and will need to be incorporated into any long term plans for the facility. The existing facility has limited air conditioning mainly the general interior ‘core area’ that provides the facility administration/nursing support services, common sitting areas at the end of the corridor, main residence lounge, etc. Estimated installation costs are based on SED experience on similar projects and industry standard cost estimating tools including RS Means. In developing the installed costs, SED also considered the area correction factors for labor rates for Nantucket, MA. Since actual installed costs may vary widely for particular installation based on labor & material rates at time of installation, SED does not guarantee installed cost estimates and shall in no event be liable should actual installed costs vary from the estimated costs herein. We strongly encourage the owner to confirm these cost estimates independently. SED does not guarantee the costs savings estimated in this report. SED shall in no event be liable should the actual energy savings vary from the savings estimated herein. Page 5 of 56 II. INTRODUCTION This study evaluated the short and long term options for the HVAC (heating, ventilation and air conditioning), plumbing and electrical systems present conditions and expected useful life systems as they relate to the occupants comfort and the building energy usage. SED looked at both the general physical and age of the equipment in addition to the current operational status. No testing was performed services limited to observations only. Facility Description: Building Description OIH was constructed in 1980 with major dining addition in 2002 having a total gross area of 20,000 sq.ft. This is a single story wood framed, slab on grade reinforced concrete floor with partial attic/mechanical space and fully accessible attic. The building is fully heated with partial air conditioning. This is a 45-bed facility with central support areas consisting of bathing, dining, laundry, kitchen, nurse call center and related administrative areas. Utilities Propane Gas Supply Company is Yeats Gas/Suburban Propane Electric Supply Company is National Grid, rate G2. Fuel Oil Supply Company, no.2 type, Harbor Fuel Oil Corp. Water and sewer services , Town of Nantucket’s Sewer Department through its agent the Wannacomet Water Company. Schedules Occupancy: 24-hours per day, 365 days per year. Equipment: Occupied mode 24-hours per day, 365 days per year. Page 6 of 56 III. OBSERVATIONS-EXISTING CONDITIONS SED conducted site visits during November 2013 and late January 2014 to allow for the obtaining existing systems data and its visual observations while operating. General envelope observations-  Wood frame construction; walls 5.5” fiberglass, attic floor 10” fiberglass/blow-in insulation.  Entry vestibules have been retrofitted with sliding doors to cut down on the outside air infiltration.  Excessive outside air flow was observed during the site observations, mainly around the entry areas that will contribute to the ‘cold temperatures’ within the building. See observed temperature under appendix A.  Attic vents are block-off in winter to cut down on the outside air infiltration. Electrical-  Service size is 800amps, 120/208-3phs. Appears to be sufficient for the current connected loads, facility personnel didn’t not any issues with this system other than the need for more outlets.  Lighting system was upgraded by National grid as part of an energy conservation program in 2011.  Emergency generator rated at 45KW, 158amps. System typically services the heating system, limited egress lighting, sewage ejector and the kitchen freezer & cooler units. Unit fuel source is a dedicated 330 gallon oil storage tank located in the shed with gthe generator. Plumbing- see appendix B Existing Equipment Inventory for additional information  Building water service with meter, combined site service with the fire line 8”connecting to the town system. Splits inside the building to 3”cold water feed to the building distribution system.  Building sanitary, 6” connected to the town system. Building system pumped from a duplex sewage ejector.  Fixtures are of the older 2.5-3gpf units. Central bathing facilities are located in the east & west wings for use by the residence. In addition each wing has a dedicated tub/shower unit within a residence room.  Central hot water heating units, oil fired generate 180deg,F hot water. This higher temperature required for the laundry and is reduced with mixing valve station to provide lowered tempered water to the kitchen and general fixtures.  Bathing areas had supplemental/replacement direct fired tank less propane hot water heaters added to provide hot water and with adequate flow to meet these rooms demand. Facility personnel noted unit were installed to meet both a demand and to address the issue of the delivery time of hot water to the bathing/shower equipment.  Propane storage tanks, multi-units service the kitchen cooking, laundry and the direct fired hot water heaters.  Kitchen fixtures discharge thru dedicated grease interceptors located within the kitchen area. Page 7 of 56 HVAC- see appendix B Existing Equipment Inventory for equipment data and additional information. The building has 100% heating coverage with limited air conditioning for the core/nursing area, residence sitting areas, a classroom and a three support spaces- medical records, computer server and dry goods storage.  Central boiler hot water heating system, oil fired units with main circulation pumps and dedicated zone pumps.  Heat within the individual residence rooms and spaces is by fin tube hot water radiators with self-contained thermostatic valves in each room/space.  Common areas and entries have dedicated hot water cabinet unit heaters with built-in fans and controls.  Heating, Ventilation and Air Conditioning systems consist of; General ventilation is provided by a central heat recovery unit with a supply and exhaust air fans; hot water coil and temperature controls to maintain a discharge set point. This unit provides both the supply and exhausts air throughout the residence areas of the facility with supply air into the residence bed area and exhaust out the toilet room. Unit has no air conditioning. The kitchen hood has a dedicated un-tempered make-up air supply fan unit with direct connection to the hood and a roof mounted exhaust fan. The dishwasher hood has a dedicated exhaust fan. The cart wash area has a dedicated exhaust fan. Laundry room has a dedicated wall exhaust fan and intake damper. Core area, entry/nurse station has dedicated air handling unit with electric coil, refrigerant coil and a spilt condenser. Unit provides heating & cooling with dehumidification for the serviced areas. Dining room has dedicated air handling unit with refrigerant coil and a spilt condenser. Limited air conditioning is by means of small dedicated split heat pump units that service the common sitting areas, classroom and the kitchen area support offices only.  Central aboveground fuel oil storage tank, 2,000 gallon capacity installed in 2011 to replace the original underground unit. Oil provides for the building heat and domestic hot water mainly the laundry and kitchen related to dish washing.  There is no central building energy management system. The automatic temperature controls system consist of individual dedicated control systems as follows; Boilers are equipment with an automatic start/stop and hot water outdoor reset controller that varies the supply water temperature based upon the outside temperature. The reset water range is 160-200deg.F. The lower temperature range is due to the cast iron boilers which require a minimum 140deg.F return water temperature. Page 8 of 56 Pump controls is limited to the boiler room main pumps which provide for outside air temperature pump start, lead-lag operation manual operation. Zone pumps, per facility personnel, are left on year round due to the lack of automatic controls. Heat recovery unit, factory packaged, with built-in face & bypass control, duct thermostats to maintain the supply discharge air temperature at a fixed set point that is manually adjustable. Kitchen hood exhaust fan is manually started/stopped with the make-up air and dishwasher hood exhaust fan interlocked to operate whenever the kitchen hood exhaust fan runs. The cart wash area fan is manually started/stopped. Core area unit is controlled by a space mounted thermostat that cycles the electric heating coil and condensing unit compressor to maintain set point temperature, manually adjustable. The electric heat and condensing unit are interlocked to prevent simultaneous operation. Attic mechanical room ‘cooling’ exhaust fan is thermostatically controlled to open a motorized intake damper and run whenever the space exceeds its set point temperature, manually adjustable. The mechanical room heating is maintained by a thermostatically controlled hot water unit heater. Residence and dining room fin tube radiation has self-contained thermostatic valves that maintain room/space set point temperatures. Common areas, corridors and entry’s temperature is maintained by the cabinet unit’s thermostat that cycles the fan. Dining room cooling air conditioning unit is controlled by a space mounted thermostat that cycles the condensing unit compressor to maintain set point temperature, manually adjustable. Limited air conditioning is by means of small dedicated split heat pump are controlled by space/room thermostat. Page 9 of 56 Existing Building Benchmarking using Utility Data A. The 2013 energy usage was as follows; see appendix C2013 Energy Usage Summary. Typical benchmarks, EPA Portfolio manager and Commercial Buildings Energy Consumption Survey (CBECS, 2003 revised 2008) compare utility usage of this building to similar types. The Portfolio manager is an EPA tool that rates your building against similar buildings. Page 10 of 56 CBECS is a database of existing buildings and their characteristics and is commonly used as bases of energy use and comparison to establish energy benchmarks. Building Type Existing Medium Energy Star Nursing Home Senior Care 20,000 17 204.3 159.4 132.3 $2.61 $3.64 $0.64 $6.89 Year HDD CDD (kBTU)(kBTU)(kBTU)(kBTU)(kBTU/sqft) 2013 5400 116 1,261,541 2,700,835 497,454 4,169,509 208.5 30 yr.ave.5776 104 Operating Cost/Sq.Ft.Building Information EPA Bldg. Type Area (Sq.Ft.) Performance Ratings Annual 2013 Oil 2013 Propane Total Normalized Total Fuel 2013 Electric Normalized Site Total Weather Information Electric and Fuel Usage Existing EPA Rank Actual Electric Actual Oil Actual Propane Energy Intensity (Kbtu/sqft) Annual Energy Use Indices Terms that is used in the table above:  Building type; the type of building being examined.  EPA Building Type: EPA Portfolio building type.  Building total gross area sq.ft.  EPA rank: EPA’s portfolio manager benchmarking tool. The scale is 1 to 100, with an average building ranking of 50.  Energy intensity kBTU/sqft: measure of the annual amount of energy used to operate this facility.  Operating cost per sq.ft. area: 2013 base year.  Degree & heating days are base 65deg.F; cooling days are 70deg.F.  Heating Degree Days: an indication of how cold the year was with higher HDD indicating a colder year.  Cooling Degree Days: an indication of how warm the year was with a higher CDD indicating a warmer year.  Actual Electric kBTU: amount of electric used during the year, measured in in kBTU which is 1000 BTU or 1/100 of therm. Conversion of electric is 3.413 kBTU/kWh.  Actual Fuel, Oil or Propane kBTU: amount of heating energy used during the year, fuel measured in kBTU which is 1000 BTU or 1/100 of therm.  Normalized Total Fuel kBTU: the total energy (electric, oil, propane) used during the year and normalized to 30 year averages based on HDD.  Normalized Site Total kBTU/sqft: 30 year average of the total heating energy use per year (kBTU) divided by the building gross square footage.  Normalized values are used to provide a common usage bases of the year to year weather variances which are based on 30 year average weather data. Comments on the above charts and spreadsheet, The building annual energy usage is divided into three categories based on type; Oil at 61%, electric at 28% and propane at 11%. The oil has peak usage during the heating months from September thru late April with a drop-off to the non-heating months that is mostly attributable to the domestic hot water usage for the laundry/kitchen. This building higher normalized energy intensity value of 208.5 kBTU/sqft as compared to the medium facility of 159.4 kBTU/sqft is a measure of its energy usage which for this existing facility is indicative of a poor envelope and poor performance of its systems. This building would need to reduce its energy usage by 55% to receive the minimum rating of ‘75’ Energy Star Award. Page 11 of 56 IV. EVALUATIONS The report evaluations are separated into two general categories of equipment and energy conservation measures. These categories will have both indirect and direct effects on each other that cannot be evaluated on its own but offer potential savings and long term usage when combined. Existing equipment evaluations see appendix B Existing Equipment Inventory for equipment data and additional information and observations. 1. Boilers (B-1, 2 & 3), cast iron type, installed 2000 (approximate) with issue to date that have included  Boiler units have been discontinued by manufacture with the continued availability of replacement parts from the manufacturer unknown.  Boiler #1combustion chamber gasket failure resulting in hot gas leakage/burn thru its cover.  Boiler #3 burner unit replaced and the related flue. Condition of the existing boilers is fair. Oil fired boilers such as this one have system cast iron section sealing issues between each boiler section as they approach the end of their useful life and in the 15 year old range. Each boiler section is connected by neoprene seals at three internal areas inside the boiler sections. These gaskets are used to connect each section to the other for water tightness. As they age and by firing # 2 oil the by-products of burning # 2 oil are sulfur and vanadium. As the boiler ages the residues land on the edges of the neoprene gaskets and as the boiler heats/cools over a period of time any moisture inside the combustion chamber mixes with the sulfur to create sulfuric acid. This acid then starts to ‘eat away’ at the neoprene gasket and eventually the boiler starts to leak between the sections. It can be re-gasket as observed on unit #1. If that area leaks for a long time (usually2-3 months) then the water has eroded/corroded the cast iron gasket captured seal port and then the boiler should be replaced. Current observations are that the boilers are not leaking. These opinions are from past experiences with boilers that fire # 2 oil and are over 15 + years old which your boiler is there in that range. Comment: while the tested combustion efficiency of these units is 84-85% the overall thermal efficiency as a measure of the ‘heat’ delivered to meet the building load is typically around 75-80%. This is due to a combination of boiler radiation heat loss to the boiler room and the limited to opening the range of the hot water reset temperature due to the cast iron material. Replacement is recommended. 2. Boilers (B-1, 2 & 3) issue with regards to sufficient boiler heating capacity. Facility personnel noted that on winter days below 15deg.F the HRV unit is shut down to prevent cold air from being discharged into the room below its set point temperature. SED observed space temperatures ranging 68-72deg.F at an outside temperature of 16-19deg.F, see appendix A. Observed Temperatures Our analysis indicated the following (see appendix D HVAC Loads Analysis for additional data). Design winter outside temperature 9deg.F. Page 12 of 56  Original calculated building load without the dining addition is 879,833 BTUH at interior temperature 70deg.F.  Corrected calculated building load with dining addition is 1,126,403 BTUH at interior temperature 70deg.F..  Calculated building load with dining addition is 1,218,731 BTUH at the current DPH required interior temperature of 75deg.F. Comment This analysis indicates that the existing boiler plant capacity can only adequately heat this facility down to an outside ambient temperature between 15-20deg.F. Replacement is recommended with increased heating capacity of 1,218,731 BTUH (minimum). See Domestic Hot Water Heaters, Storage Type hereinafter for additional comments on sizing with indirect hot water heating. 3. Main Heating System Circulation & Zone Pumps (P-1 thru P-9). These are constant speed units that should be upgraded to newer energy efficient units with DC- Electronically Commutated Motor (ECM). These units when coupled with the proper controls allow for direct variation of the system flow which will vary due to the building/space heating loads. Comment The useful like of these units vary from 0-9 years. The zone pumps are pipe in a secondary loop with balanced return flow that is works marginally and is a waste of energy since it uses a 2nd pump to force the water flow thru the zone. 4. Oil Circulation Pumps (OP-1 & 2). Units are fully functional at this time. OP-2 was replaced in 2014. Comment Replacement of OP-1 has exceeded its useful service life and should be replaced. 5. Core Area AC. Unit is fully functional at this time. Comment: This unit is the only piece of equipment that supply’s fresh and tempered (heated & cooled) air to the central core area that also included the nurse’s station. This unit has exceeded its useful service life and should be replaced. Replacement compressors using this refrigerant are being phased out of manufacturing and in the foreseeable future may become unavailable. 6. Dining Area AC. Unit is fully functional at this time. Comment: This unit uses a refrigerant, R-22, that is no longer made and will become harder if not impossible to obtain as a replacement due to any system leakage. Replacement compressors using this refrigerant are being phased out of manufacturing and in the foreseeable future may become unavailable. Page 13 of 56 7. General Usage Areas Ductless Split Units (5 units) Units are fully functional at this time. Comment: This unit uses a refrigerant, R-22, that is no longer made and will become harder if not impossible to obtain as a replacement due to any system leakage. Replacement compressors using this refrigerant are being phased out of manufacturing and in the foreseeable future may become unavailable. 8. Kitchen Ductless AC units (3 units). Units are fully functional at this time. The dry goods storage unit was replaced in 2013 and that unit uses R-410a as a refrigerant. Comment: Two of these units use refrigerant, R-22, that is no longer made and will become harder if not impossible to obtain as a replacement due to any system leakage. Replacement compressors using this refrigerant are being phased out of manufacturing and in the foreseeable future may become unavailable. 9. Central energy recovery unit ventilator (HRV), installed 1980 with issues to date that have included the following items;.  Unit has been discontinued by manufacture with the continued availability of replacement parts from the manufacturer unknown.  Unit controls have been repaired over time on as needed bases.  Dampers, face & by-pass not operational.  Unit access for normal maintenance is limited that has resulted in limited filter replacement and no cleaning of the heat exchanger core. It was observed that the core has dust/dirt buildup of the surfaces resulting in a loss of the unit efficiency.  Unit is shutoff when the outside temperature is below 10deg.F to prevent cold air being supplied to the residence rooms per the facility operator. This is caused in part due to the lack of sufficient heat from the boiler heating system.  Minimum dehumidification of the fresh outside supply air provided thru the heat exchanger only. Estimate that this unit would need to have 25tons of mechanical cooling to meet an indoor temperature of 75def.F/50% humidity. Comment: current performance issues includes the lack of heating on colder days, no air condition to dehumidify the summer supply air, service issues and unit being discontinued by the manufacture. 10. Kitchen Make-up unit. Unit is fully functional at this time. Comment: unit has exceeded its useful service life. 11. Kitchen Exhaust Fans: Units are fully functional at this time. Comment: units have exceeded their useful service life 12. Attic Mechanical Fan: Unit is fully functional at this time. Comment: unit has exceeded its useful service life. 13. Laundry Area Exhaust Fan and Intake: Unit is fully functional at this time. Comment: Units were installed within the past 5-6 years. Page 14 of 56 14. Combustion Exhaust Fan: Unit is fully functional at this time. Comment: unit has exceeded its useful service life. 15. Residence & Dining Room thermostats: Majority of units are functional at this time. Comment: unit has exceeded its useful service life. 16. Domestic hot water heaters, storage tank type (2 units) in the boiler room: Units are fully functional at this time. Comment: The units are coming up on its useful service life and owner replaced these in 2007 after earlier replacement units from 2000(?) were replaced. Owner has noted issue with servicing since it requires taking both off line at the same time leaving the facility without its main source of domestic hot water. Replacement should evaluate the replacement for these units as an indirect type connected to the replacement boiler system. The current domestic water heating system capacity is provided from the central boiler room oil fired storage tanks with a combined recovery of 332gal/hour and the propane directed fired units with a combined recovery of 576 gal/hour. This is in compliance with current DPH guidelines, see Appendix E. 17. Domestic hot water heaters, direct fired tank less type (2 units): Units are fully functional at this time. Comment: unit has exceeded its useful service life. V. CONCLUSIONS and RECOMMENDATIONS Considering the projects requirement to reduce its energy usage and that ownership is to remain unchanged, and also the unpredictable cost of future energy, those options which minimize energy consumption should be considered favorable if they occur within a reasonable timeline. To accomplish this simple payback was calculated for the analyzed option which does not consider the cost of salvage values of the individual option. Applicable energy conservation measures evaluated included; Energy Conservation Measures (ECM): ECM#1: Replace zone constant speed units with variable frequency drive ECM motors. Electric Savings: 2,628KWH x 6 pumps =15,768KWH Cost Savings: $368 x 6 pumps = $2,208.00 Replacement Cost: 6 units x $350.00 = $2,100.00 (materials) 6 units, piping and access. = $ 700.00 (materials) 1 man x 2 days;16 hrs x $75/hr.= $1,200.00 (labor mech+elect) $4,000.00 Simple payback: $4,000/$2,208= 1.8 yrs. Page 15 of 56 ECM#2: Replace main constant speed units with variable frequency drive ECM motors. One pump is a stand-by unit. Electric Savings: 2,366KWH Cost Savings: $331.00 Replacement Cost: 2 x $1,500.00 = $3,000.00 (materials) units, piping and access. = $1,200.00 (materials) 1 man x 2 days; 16 hrs x $75/hr.= $1,200.00 (labor mech + elect) $5,400.00 Simple payback: $5,400/$331=16.3 yrs. ECM#3: Replace main constant speed units with variable frequency drive ECM motors and eliminate the zone pumps. Elimination of the zone pumps will need to include minor piping modification once these pumps are eliminated. Electric savings 3,137KWH x 6 pumps= 18,822KWH (see ECM#1 analysis data) Electric Savings: 2,366KWH (see ECM#2 analysis data) Cost Savings: (18,822KWH + 2,366KWH) x $0.14/KWH= $2,966.00 Replacement Cost: demo. 6 units x $250.00 = $1,500.00 (materials) new 2 pumps x $1,500.00 = $3,000.00 (materials) units, piping and access. = $1,200.00 (materials) 2 man x 2 days; 32 hrs. x $75/hr.= $2,400.00 (labor mech + elect) $8,100.00 Simple payback: $8,100/$2,966= 2.7 yrs. ECM#4: Replace the existing oil fired domestic hot water heaters with indirect units with heating hot water from the new boilers. Electric Savings: 156KWH (estimated based upon existing burner’s usage) Cost Savings: $219.00 Oil Savings: 1,937 gallons Cost Savings: $6,953.00 Replacement Cost: 2 units x $6,500.00 = $13,000.00 (materials) 2 units, piping and accessories = $ 6,000.00 (materials) 2 men x 5 days; 80 hrs. x $75/hr. = $ 6,000.00 (labor mech.) 1 man x 3 days; 24 hrs. x $75/hr. = $ 1,800.00 (labor. elect.) $26,800.00 Simple payback: $26,800/($6,953+$219.00) = 3.7 yrs. Recommendations: The priority items that are listed will require action now or in the in the near future. Individual equipment and/or system replacement is recommended due to its current age or condition which will improve the facility energy performance and avoid interruption due to unscheduled component failure and assure long term usage of the facility. Several of the existing individual pieces of equipment that are not listed for action at this time while functional at this time have Page 16 of 56 exceeded their useful service life and have not been deemed as critical should be considered for additional action due to their age. 1. Room fin-tube radiators, self-contained thermostats have all exceed their service life and should be replaced. Replacement will provide for improved temperature control and space comfort. Replacement Cost: 41 units x $65/unit =$2,665.00 (material) 1 man x 3 days; 24 hrs. x $75/hr. =$1,800.00 (labor) $4,465.00 2. Main Heating System Circulation & Zone Pumps (P-1 thru P-8) see ECM#3. 3. Oil Circulation Pumps (OP-1 & 2). Replacement of OP-1 Replacement Cost: 1 pump unit with motor =$ 750.00 (material) piping and accessories =$ 250.00 (materials) 1 man x 1 days; 8 hrs. x $75/hr. =$ 600.00 (labor) $1,600.00 4. Central energy recovery unit ventilator (HRV) replace in-kind due to its poor performance and current condition. Existing unit, similar capacity without air conditioning, physical size and arrangement. Replacement cost: $194,610 (see appendix G) 5. Central energy recovery unit ventilator (DOAS-ERV) replacement, three (3) smaller capacity units dedicated to the three residence wins with heating and air conditioning. Note, air conditioning sized for dehumidification of the outside air not intended to treat the complete occupied space. Replacement cost: $181,820 (see appendix G) 6. Combustion Exhaust Fan: replace if existing boilers & domestic hot water heaters remain. Fan unit not required for the new boilers and domestic hot water heaters selection. Replacement Cost: fan with motor =$1,800.00 (material) Fan draft controller =$ 400.00(material) Flue modification =$1,000.00 (material) 2 man x 2 days; 16 hrs. x $75/hr. =$1,200.00 (labor) $4,400.00 7. Domestic hot water heaters, storage tank type (2 units): see ECM#4. Replacement Cost $26,800.00 8. Domestic hot water heaters, direct fired tank less type (2 units): Replacement Cost: 2 units =$3,500.00 (material) Flue modification =$ 500.00 (material) piping and accessories =$ 500.00 (materials) 2 man x 2 days; 16 hrs. x $75/hr. =$1,200.00 (labor) $5,700.00 Page 17 of 56 9. Boiler system replacement, sized to provide building heating, individual flues and indirect domestic hot water. Due to the limited existing boiler room size and the proposed boilers sizing and quantity requires that the indirect hot water heaters (2- units 119 gallon, 30-inch dia.) tanks be located in the adjoining storage room.  Indirect domestic hot water heaters $ 26,800.00 (see ECM#4)  New tempering valve with piping $ 2,500.00  New main pumps with ECM motors & controls $ 8,100.00 (see ECM#3) Subtotal $ 37,400.00 General Conditions $ 0.00 Mobilization $ 0.00 Coordination $ 1,870.00 Phasing $ 0.00 Subtotal $ 39,270.00 Profit (15%) $ 5,891.00 Subtotal $ 45,161.00 Bonding (2%) $ 903.00 Const. allowance $ 0.00 Total $ 46,064.00  Boilers and related work $153,561.00 (see appendix G) System Total $199,625.00 Notes: 1. Boilers, cast iron units that allow low return water temperatures of 100deg.F are manufactured by Viessmann, Buderus, DeDietrich. Selection of one of these manufactures would eliminate the need for a hot water return control system that prevents boiler shock associated with low return water temperatures. 2. Indirect water heaters, Turbomax. 3. Pumps, ECM motors with built-in controls; manufacture Grundfos, Wilo. Conclusions Based upon the evaluation and analysis as performed for this report SED recommend the following minimum course of action for facility priority items; 1. Replace the existing individual fin-tube radiation self-contained thermosets $ 4,500.00. 2. Replace the existing central heat recovery unit with three(3) new DOAS-ERV $182,000.00. 3. Replace the existing boiler heating, domestic hot water heater and pumps $200,000.00 4. Replace fuel oil circulation pump, OP-1 $ 1,600.00 5. Replace existing propane direct fired domestic hot water heaters $ 5,700.00 Total $393,800.00 The remainder of the existing equipment while exceeding the projected useful service life are still fully functional and were not noted by facility as an issue for either maintenance or service. These items should be replaced on an as need bases. Page 18 of 56 APPENDICES: A. Observed Temperatures B. Existing Equipment Inventory C. 2013 Energy Usage D. HVAC Load Analysis, Summary E. Domestic Water Storage Tank Analysis F. Energy Conservation Measures, Analysis G. System Budget Costs Page 19 of 56 Appendix A: Observed Temperatures(January 2014) Page 20 of 56 Appendix B: Existing Equipment Inventory Useful service life as estimated by ASHRAE- HVAC Applications (2011) FACILITY: OUR ISLAND HOME DATE: JAN 2014 BOILER & BURNER #1 Location: boiler room Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace with new higher efficiency units. 1.Boiler has had section seal failure with burn thru, patched. 2.System controller: Tekmar 254, 4 stages boiler, outside water reset & system start 3. Unit model discontinued by manufactuer, replacemnt unit not compatable. controls benchmark is 16 years COMMENTS: BOILER SIDE PANEL BURN THRU Is fuel cutoff device installed? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 11 cast iron boiler, benchmark is 25 years 2 BURNER 1 burner, benchmark is 15 years 4 burner motor benchmark is 18 years ENERGY CONSERVCATION MEASURES Is boiler equipped with HI & LO water cutoffs? Is there proper air control devices (air seperator, expansion tank, air vents)?Is the O+M located nerby or in a file? Is there a service contractor? Are system controls operational?Is recent combustion efficiency test posted or on file? STANDRAD AND CODE ISSUES Is the flue and breeching installed per code, pitch & length?Is unit current energy code compliant? Is the combustion air source code compliant? Is emergency power a requiremnt? Is barometric damper in good condition? Is the room under a negative pressure versus surrounding spaces?Is the fuel piping in good condition? Is there accss around equipment?MAINTENANCE Overall condition, clean, clutter free?Is the system flow diagram mounted in room? Are there sufficuent temperature sensors?Is there piped make-up water? Is the flue and breeching insulation in good condition?Is there a backflow preventer on the make-up line? Is there a combustiion air source?Is there a PRV on ther make-up water line? Are the valves in good condition?Is ther a localized disconnect? Are there valve tags?PLUMBING Are there sufficient pressure gauges?Are ther localized drains? Are there visual signs of leaks in water,fuel or combustion exhhaust?Is the motor in good condition? Are the drain and safety valves properly piped?ELECTRICAL Is the piping in good condition?Is the motor high efficiency? Is the piping insulated complete and in good condition?Is the piping in good condition? Year Installed: 2000?Manufacturer:Weil-Mclain Burner, Manfacturer: Carlin Model:WGO-8 Model:QB-300 Equipment Type: Cast Iron Size: 231MBH Size: 2.3 gph Fuel: No. 2 oil Electrical: 1/6 hp motor, 120-1ph EXISTING CONDITIONS AND DEFICIENCIES BOILER BURNER Page 21 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 BOILER & BURNER #2 Location: boiler room Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace with new higher efficiency units. 1.System controller: Tekmar 254, 4 stages boiler, outside water reset & system start 2. Unit model discontinued by manufactuer, replacemnt unit not compatable. controls benchmark is 16 years ENERGY CONSERVCATION MEASURES COMMENTS: Is fuel cutoff device installed? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 11 cast iron boiler, benchmark is 25 years 2 Is boiler equipped with HI & LO water cutoffs? Is there proper air control devices (air seperator, expansion tank, air vents)?Is the O+M located nerby or in a file? Is barometric damper in good condition?Is there a service contractor? Are system controls operational?Is recent combustion efficiency test posted or on file? STANDRAD AND CODE ISSUES Is the flue and breeching installed per code, pitch & length?Is unit current energy code compliant? Is the combustion air source code compliant? Is emergency power a requiremnt? Is the room under a negative pressure versus surrounding spaces?Is the fuel piping in good condition? Is there accss around equipment?MAINTENANCE Overall condition, clean, clutter free?Is the system flow diagram mounted in room? Are there sufficuent temperature sensors?Is there piped make-up water? Is the flue and breeching insulation in good condition?Is there a backflow preventer on the make-up line? Is there a combustiion air source?Is there a PRV on ther make-up water line? Are the valves in good condition?Is ther a localized disconnect? Are there valve tags?PLUMBING Are there sufficient pressure gauges?Are ther localized drains? Are there visual signs of leaks in water,fuel or combustion exhhaust?Is the motor in good condition? Are the drain and safety valves properly piped?ELECTRICAL Is the piping in good condition?Is the motor high efficiency? Is the piping insulated complete and in good condition?Is the piping in good condition? Year Installed: 2000?Manufacturer:Weil-Mclain Burner, Manfacturer: Carlin Model:WGO-8 Model:QB-300 Equipment Type: Cast Iron Size: 231MBH Size: 2.3 gph Fuel: No. 2 oil Electrical: 1/6 hp motor, 120-1ph EXISTING CONDITIONS AND DEFICIENCIES BOILER BURNER BURNER 1 burner, benchmark is 15 years 4 burner motor benchmark is 18 years HEATING BOILER SYSTEM CONTROLLER Page 22 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 BOILER & BURNER #3 Location: boiler room Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace with new higher efficiency units. 1.System controller: Tekmar 254, 4 stages boiler, outside water reset & system start 2.Burner refurrbished & flue replaced on the unit 01/24/2014 3 Unit model discontinued by manufactuer, replacemnt unit not compatable. COMMENTS: ENERGY CONSERVCATION MEASURES Burner, Manfacturer: Becket Model: AFG Size: 2.3 gph Electrical: 1/6 hp motor, 120-1ph PLUMBING Useful Life 11 2 Are system controls operational? cast iron boiler, benchmark is 25 years controls benchmark is 16 years Is emergency power a requiremnt? Is unit current energy code compliant?Is the flue and breeching installed per code, pitch & length? Is the combustion air source code compliant? Is boiler equipped with HI & LO water cutoffs? Is fuel cutoff device installed? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life ELECTRICAL Is the motor in good condition? Is the piping in good condition? BURNER Is the room under a negative pressure versus surrounding spaces? Is barometric damper in good condition? Are there sufficient pressure gauges? Are there valve tags? Are the valves in good condition? Is the piping in good condition? Are the drain and safety valves properly piped? Is the piping insulated complete and in good condition? Is there proper air control devices (air seperator, expansion tank, air vents)? Overall condition, clean, clutter free? Is there accss around equipment? Are there sufficuent temperature sensors? Is ther a localized disconnect? Is the motor high efficiency? Is recent combustion efficiency test posted or on file? Is there a service contractor? Is the O+M located nerby or in a file? Is the system flow diagram mounted in room? MAINTENANCE Is the fuel piping in good condition? Year Installed: 2000? Equipment Type: Cast Iron Fuel: No. 2 oil Manufacturer:Weil-Mclain Model:WGO-8 Size: 231MBH EXISTING CONDITIONS AND DEFICIENCIES BOILER Are there visual signs of leaks in water,fuel or combustion exhhaust? BOILER NEW FLUE BURNER REFURBISHED 1 burner, benchmark is 15 years 4 burner motor benchmark is 18 years STANDRAD AND CODE ISSUES Is there a PRV on ther make-up water line? Is there a backflow preventer on the make-up line? Is there piped make-up water? Are ther localized drains? Is there a combustiion air source? Is the flue and breeching insulation in good condition? Page 23 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 COMBUSTION AIR EXHAUST FAN Manufacturer: Whitty Co. Inc. (obsolete) Location: boiler room Tag/Model/Capacity Electrical: 1/2 hp, 12-1ph, 1728 RPM Y N NA Y N NA X X X X X X X X X X X X X X X X X X 1.Manufacture out of bussiness, obsolete. 2.Exterior surface corrison 3.Draft fan controller not working, fan runs 24/7. DRAFT FAN DRAFT FAN CONTROLLER COMBUSTION AIR INTAKE Unit in good condition? Is ther a localized disconnect?Are automatic dampers in good condition & operating? ELECTRICAL Year Installed: 2000? Type: single fan, constant volumn. EXISTING CONDITIONS AND DEFICIENCIES AIR HANDLING UNIT ATC Is the flue insulated complete and in good condition?Does the system have automatic controls? Is the flue in good condition? Are ther localized drains? MAINTENANCE Is there accss around equipment?Is the motor high efficiency? Is unit current energy code compliant? Overall condition, clean, clutter free, no vibration or noise? Is the system flow diagram mounted in room? Is the O+M located nerby or in a file? Are system controls operational? Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? Does the unit have a VSD? PLUMBING END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 0 fan unit benchmark is 25 years.0 motor benchmark is 18 years ENERGY CONSERVCATION MEASURES COMMENTS: Page 24 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 OIL PUMPS: OP-1 & OP-2 Location: boiler room Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace with new higher efficiency units. 1.OP-1, original unit. 2.OP-2, unit replaced 2014. 3.Pumps are manually operated, year round running. OP-1 & 2 OIL FILTERING SYSTEM-STORAGE TANK OP-2 pump, pipe-mounted benchmark is 20 years.0 OP-1 pump, pipe-mounted benchmark is 20 years.20 ENERGY CONSERVCATION MEASURES COMMENTS: Useful Life Useful Life Are system controls operational?Is the O+M located nerby or in a file? Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? Is unit current energy code compliant? END OF EQUIPMENT USEFUL SERVICE LIFE Are there sufficuent temerature sensors, thermometers?Are ther localized drains? Overall condition, clean, clutter free?MAINTENANCE Is there any excess pump vibration?Is the system flow diagram mounted in room? Are the valves in good condition?Is ther a localized disconnect? Are there valve tags?Does the pump have a VSD? Are there sufficient pressure gauges?PLUMBING Is there sufficient pump head pressure? Is the piping in good condition?ELECTRICAL Is there accss around equipment?Is the motor high efficiency? Is the piping insulated complete and in good condition?Does the system have automatic controls? Year Installed: Varies Manufacturer:Suntec Model: JP6A Casing: Cast Iron Size: 24 GPH @ 100PSIG Impeller: Steel (rotary)Electrical: 1/3 hp motor, 120-1ph (1725RPM) EXISTING CONDITIONS AND DEFICIENCIES PUMP ATC Page 25 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 MAIN HOT WATER CIRCULATION PUMPS : P-7 & P-8(STAND-BY) Location: boiler room Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace with new higher efficiency units. X 1.Automatic controls part of the boiler system Tekmar controller, start-stop only 2.Manual selection of pump sequencing, next up designated by cup. 3.Pump P-1(top) motor replaced 2009? 4.Pressure gauge missing P-2(bottom) Casing: Cast Iron Size: 32GPM @ 32FT.HD Year Installed: 2005?Manufacturer:TACO Model: 1615 Impeller: Cast Bronze EXISTING CONDITIONS AND DEFICIENCIES PUMP ATC Is the piping insulated complete and in good condition?Does the system have automatic controls? Electrical: 1/2 hp motor, 120-1ph (1725RPM) Is there sufficient pump head pressure? ELECTRICALIs the piping in good condition? Is the motor high efficiency?Is there accss around equipment? Are the valves in good condition?Is ther a localized disconnect? Are there valve tags? PLUMBINGAre there sufficient pressure gauges? Does the pump have a VSD? Overall condition, clean, clutter free? Is the system flow diagram mounted in room? Are there sufficuent temerature sensors, thermometers?Are ther localized drains? MAINTENANCE Is there any excess pump vibration? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? Is unit current energy code compliant? Is the O+M located nerby or in a file? Is there a service contractor? Are system controls operational? controls benchmark is 16 years ENERGY CONSERVCATION MEASURES COMMENTS: PUMPS 1 pump, pipe-mounted benchmark is 10 years.2 Consider replacemnt with ECM units with autoadapt controls Page 26 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 3 TON DUCTLESS SPLIT AC- TYPICAL FOR THREE UNITS Manufacturer: Carrier Location: common area; north, east & west end-of-corridors Model: 40QAB036 (INDOOR), 38HDC030(OUTDOOR) Size: not applicable Capacity: 840CFM @ 0.25inWC. (INDOOR) Heating: none Electrical: indoor fan 1/6 hp motor, 208-1ph (1725RPM) Electrical: oudoor condenser 1/8 hp motor, 208-1ph (1725RPM) Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X 1.Refrigeration is R-22 no longer manufactured, replacemnt refrigerents not compatable. 2.Exterior insulation splitting apart. THERMOSTAT INDOOR CONDENSER ATC Year Installed: 2003 Type: single zone ductless AC unit with remote condenser Cooling: 3 ton, refrigerant R-22 EXISTING CONDITIONS AND DEFICIENCIES DUCTLESS AC Is the piping insulated complete and in good condition?Does the system have automatic controls? Is the piping in good condition? Are the valves in good condition?ELECTRICAL Is there accss around equipment?Is the motor high efficiency? Indood unit in good condition?Is ther a localized disconnect? Are automatic dampers in good condition & operating?Does the unit have a VSD? Outdoor unit in good condition?PLUMBING Refrigeration systems & associated controls in good condition?Are ther localized drains? Energy revovery installed & operating?MAINTENANCE Is unit current energy code compliant? Overall condition, clean, clutter free, no vibration or npoise?Is the system flow diagram mounted in room? Are there valve tags?Is the O+M located nerby or in a file? Are system controls operational?Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 9 indoor unit motor benchmark is 20 years.9 OUTDOOR CONDENSER outdoor unit compressor benchmark is 20 years ENERGY CONSERVCATION MEASURES COMMENTS: Page 27 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 5 TON DUCTLESS SPLIT AC- TYPICAL FOR TWO UNITS Manufacturer: Carrier Location: north training room & nurse station sitting area.Model: 40QAB060 (INDOOR), 38HDC060(OUTDOOR) Size: not applicable Capacity: 850CFM @ 0.25inWC. (INDOOR) Heating: none Electrical: indoor fan 1/4 hp motor, 208-1ph (1725RPM) Electrical: oudoor condenser 1/8 hp motor, 208-1ph (1725RPM) Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X 1.Refrigeration is R-22 no longer manufactured, replacemnt refrigerents not compatable. 2.Exterior insulation splitting apart. THERMOSTAT INDOOR CONDENSER ATC Year Installed: 2003 Type: single zone ductless AC unit with remote condenser Cooling: 5 ton, refrigerant R-22 EXISTING CONDITIONS AND DEFICIENCIES DUCTLESS AC Is the piping insulated complete and in good condition?Does the system have automatic controls? Is the piping in good condition? Are the valves in good condition?ELECTRICAL Is there accss around equipment?Is the motor high efficiency? Indood unit in good condition?Is ther a localized disconnect? Are automatic dampers in good condition & operating?Does the unit have a VSD? Outdoor unit in good condition?PLUMBING Refrigeration systems & associated controls in good condition?Are ther localized drains? Energy revovery installed & operating?MAINTENANCE Is unit current energy code compliant? Overall condition, clean, clutter free, no vibration or npoise?Is the system flow diagram mounted in room? Are there valve tags?Is the O+M located nerby or in a file? Are system controls operational?Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 9 indoor unit motor benchmark is 20 years.9 OUTDOOR CONDENSER outdoor unit compressor benchmark is 20 years ENERGY CONSERVCATION MEASURES COMMENTS: Page 28 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 CORE AREA AC Manufacturer: Carrier (indoor unit) Bryant (outdoor unit) Location: attic mechanical room Model: 40AS-036 Size: unknown Capacity: 1300CFM @ 0.60inWC. (INDOOR) Heating: 3.6 KW, electric (208-3ph)Electrical: indoor fan 1/3 hp motor, 120-1ph (1725RPM) Electrical: oudoor condenser 1/3 hp motor, 120-1ph (1725RPM) Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace with new higher efficiency units.X 1.Unit model discontinued by manufactuer, replacemnt unit not compatable. 2.Refrigeration is R-22 no longer manufactured, replacemnt refrigerents not compatable. UNIT SPACE THERMOSTAT INDOOR FAN COILN UNIT OUTDOOR CONDENSER Type: single zone, constant volumn with remote condenser Are system controls operational? Are automatic dampers in good condition & operating? Energy revovery installed & operating? outdoor unit compressor benchmark is 20 years Consider retrofitting with central VRZ ductless system. 0 indoor unit motor benchmark is 20 years.?? ENERGY CONSERVCATION MEASURES COMMENTS: Is emergency power a requiremnt? Is unit current energy code compliant? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life Are there valve tags?Is the O+M located nerby or in a file? Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Outdoor unit in good condition?PLUMBING Refrigeration systems & associated controls in good condition?Are ther localized drains? Overall condition, clean, clutter free, no vibration or npoise? MAINTENANCE Is the system flow diagram mounted in room? Is there accss around equipment?Is the motor high efficiency? Are the valves in good condition? Is ther a localized disconnect? Does the unit have a VSD? Indood unit in good condition? Is the piping & ductwork insulated complete and in good condition?Does the system have automatic controls? Is the piping & ductwork in good condition? ELECTRICAL Year Installed: 1980(indoor), unknown (outdoor) Cooling: 3 ton, refrigerant R-22 EXISTING CONDITIONS AND DEFICIENCIES AIR HANDLING UNIT ATC Page 29 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 KITCHEN AREA DUCTLESS SPLIT AC- TYPICAL FOR THREE UNITS Manufacturer: Friedrich(Dry Goods), Heat Controller (Computer Server, Medical Records) Location: kitchen area Model: Friedrich MR09CIH (OUTDOOR), Heat Controller A-HMC09AS(OUTDOOR) Size: not applicable Capacity: VARIES Cooling: 9000 BTUH, refrigerant R-410a Dry Goods.Electrical: VARIES Heating: none Electrical: oudoor condenser 1/6 hp motor, 120-1ph (1725RPM) Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X X 1.Refrigeration is R-22 no longer manufactured, replacemnt refrigerents not compatable. 2.Exterior insulation splitting apart. 3.Medical records unit has exterior corrision. MEDICAL RECORDS COMPUTER SERVER DRY GOODS (2006?)(2006?)(2013) ATC Year Installed: 2006,2012 Type: single zone ductless AC unit with remote condenser Cooling: 9000 BTUH, refrigerant R-22 EXISTING CONDITIONS AND DEFICIENCIES DUCTLESS AC Is the piping insulated complete and in good condition?Does the system have automatic controls? Is the piping in good condition? Are the valves in good condition?ELECTRICAL Is there accss around equipment?Is the motor high efficiency? Indood unit in good condition?Is ther a localized disconnect? Are automatic dampers in good condition & operating?Does the unit have a VSD? Outdoor unit in good condition?PLUMBING Refrigeration systems & associated controls in good condition?Are ther localized drains? Energy revovery installed & operating?MAINTENANCE Is unit current energy code compliant? Overall condition, clean, clutter free, no vibration or npoise?Is the system flow diagram mounted in room? Are there valve tags?Is the O+M located nerby or in a file? Are system controls operational?Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 7 12outdoor unit compressor benchmark is 15 years outdoor unit compressor benchmark is 15 years OUTDOOR CONDENSERS ENERGY CONSERVCATION MEASURES COMMENTS: Page 30 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 HEAT RECOVERY VENTILATOR(AIR-TO-AIR) Manufacturer: Des Champs (now Munters) Location: attic mechanical room Model: PV10 with ten(10) Series 74-1000-68A6C Z-Duct Heat Recovery modules. Recovery: 535,488 BTUH (winter) Capacity: 11,855 CFM @ 0.60inWC. (INDOOR) Heating: recovery with supplemental hot water coil Electrical: supply fan 15 hp motor, 208-3ph (1725RPM) Electrical: exhaust fan 5 hp motor, 208-3ph (1725RPM) Y N NA Y N NA ATC X X Does the system have automatic controls? X X ELECTRICAL X X Is the motor high efficiency? X X Is ther a localized disconnect? X X Does the unit have a VSD? X Energy revovery installed & operating?PLUMBING X Overall condition, clean, clutter free, no vibration or noise?X Are ther localized drains? X MAINTENANCE X X Is the system flow diagram mounted in room? X Is the O+M located nerby or in a file? X Is there a service contractor? X X X motor benchmark is 18 years X 1.Unit model discontinued by manufactuer, replacemnt unit not compatable. 2.Unit controls have been updated, dampers not working, coils and HX dirty, etc, PIPING Heating Coil: 644,174 BTUH Year Installed: 1980 Type: Plate type air-to-air HX, constant volumn. Cooling: None EXISTING CONDITIONS AND DEFICIENCIES HRV Is the piping & ductwork insulated complete and in good condition? Is the piping & ductwork in good condition? Are the valves in good condition? Is there accss around equipment? Unit in good condition? Are automatic dampers in good condition & operating? Is unit current energy code compliant? Are there valve tags? Are system controls operational? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 0 fan unit benchmark is 25 years.0 ENERGY CONSERVCATION MEASURES COMMENTS: replacemnt with new energy recovery unit INSIDE AT HX HRV UNIT Page 31 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 ZONE WATER CIRCULATION PUMPS : P-1 North,P-2 West,P-3 Stand-by,P-4 East ,P-5 South & P-6 HRV. Location: attic mechanical room Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X X 1.P-1: Pump bearing & motor replaced 2007.4.P-4 & P-5: Unit replaced 2013. 2.P-2: Pump bearing & motor replaceed 2003.5.P-6: Pump replaced 2005, motor replaced 2008. 3.P-3: Pump replaced 2004, motor replaced 2006.6.Manual year round operation 24/7. P-2 P-1 P-3 P-4 P-5 P-6 Replace with new higher efficiency units. Consider replacemnt with ECM units with autoadapt controls COMMENTS: Is the piping insulated complete and in good condition?Does the system have automatic controls? Is the piping in good condition?ELECTRICAL Is there accss around equipment?Is the motor high efficiency? Are the valves in good condition?Is ther a localized disconnect? Are there valve tags?Does the pump have a VSD? Are there sufficient pressure gauges?PLUMBING Year Installed: Varies Manufacturer:TACO Model: 112 Casing: Cast Iron Size: 7GPM @ 10FT.HD (Typical) Impeller: Cast Bronze Electrical: 1/3 hp motor, 120-1ph (3450RPM) (Typical) EXISTING CONDITIONS AND DEFICIENCIES PUMP ATC Is there sufficient pump head pressure? Are there sufficuent temerature sensors, thermometers?Are ther localized drains? Overall condition, clean, clutter free?MAINTENANCE Is there any excess pump vibration?Is the system flow diagram mounted in room? Useful Life Useful Life Are system controls operational?Is the O+M located nerby or in a file? Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? Is unit current energy code compliant? END OF EQUIPMENT USEFUL SERVICE LIFE 3 P-1, pump, pipe-mounted benchmark is 10 years.9 P-4, pump, pipe-mounted benchmark is 10 years. ENERGY CONSERVCATION MEASURES 0 P-2, pump, pipe-mounted benchmark is 10 years.9 P-5, pump, pipe-mounted benchmark is 10 years. 2 P-3, pump, pipe-mounted benchmark is 10 years.1 P-6, pump, pipe-mounted benchmark is 10 years. Page 32 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 ZONE WATER CIRCULATION PUMPS : P-9 Dining Room. Location: storage closet outside of dining room. Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace with new higher efficiency units. X 1.Located in closet ceiling outside of dining room. 2. Manual year round operation, continous. ENERGY CONSERVCATION MEASURES COMMENTS: Consider replacemnt with ECM units with autoadapt controls P-9 0 pump, pipe-mounted benchmark is 10 years. Is emergency power a requiremnt? Is unit current energy code compliant? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life Are system controls operational?Is the O+M located nerby or in a file? Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Are there sufficuent temerature sensors, thermometers?Are ther localized drains? Overall condition, clean, clutter free?MAINTENANCE Is there any excess pump vibration?Is the system flow diagram mounted in room? Are the valves in good condition?Is ther a localized disconnect? Are there valve tags?Does the pump have a VSD? Are there sufficient pressure gauges?PLUMBING Is there sufficient pump head pressure? Is the piping in good condition?ELECTRICAL Is there accss around equipment?Is the motor high efficiency? Is the piping insulated complete and in good condition?Does the system have automatic controls? Year Installed: 2003 Manufacturer:TACO Model: 008 Casing: Cast Iron Size: 6GPM @ 13FT.HD Impeller: Cast Bronze Electrical: 1/25 hp motor, 120-1ph (3450RPM) EXISTING CONDITIONS AND DEFICIENCIES PUMP ATC Page 33 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 RESIDENCE ROOM RADIATOR & THERMOSTAT (TYPICAL) Location: residence rm. and common spaces Y N NA Y N NA X X X X X X X X X X X X X X X X X X X End of useful life, replace self-contained thermostatic valves SELF-CONTAINED THERMOSTAIC VALVE SELF-CONTAINED THERMOSTAIC SPACE SENSOR COMMENTS: Unit covers in good condition? 0 radiator, benchmark is 25 years.0 self-contained thermostat, benchmark is 10 years. ENERGY CONSERVCATION MEASURES Is emergency power a requiremnt? Is unit current energy code compliant? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life Are system controls operational? Is the O+M located nerby or in a file? Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Are ther localized drains? Overall condition, clean, clutter free? MAINTENANCE Is the system flow diagram mounted in room? Are the valves in good condition?Is ther a localized disconnect? Does the pump have a VSD? PLUMBING Is the piping in good condition? ELECTRICAL Is there accss around equipment?Is the motor high efficiency? Is the piping insulated complete and in good condition?Does the system have automatic controls? Year Installed: 1980 Manufacturer: Vulcan? Model: FS? Size: 600BTUH per foot (active length) Electrical: none EXISTING CONDITIONS AND DEFICIENCIES PUMP ATC Page 34 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 DINING ROOM RADIATOR & THERMOSTAT (TYPICAL) Location: dining room Y N NA Y N NA X X X X X X X X X X X X X X X X X X X End of useful life, replace self-contained thermostatic valves RADITOR SELF-CONTAINED THERMOSTAIC SPACE SENSOR COMMENTS: 12 radiator, benchmark is 25 years.0 self-contained thermostat, benchmark is 10 years. ENERGY CONSERVCATION MEASURES Useful Life Useful Life Is the O+M located nerby or in a file? Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? Is unit current energy code compliant? END OF EQUIPMENT USEFUL SERVICE LIFE Are ther localized drains? MAINTENANCE Is the system flow diagram mounted in room? Are the valves in good condition?Is ther a localized disconnect? Overall condition, clean, clutter free?Does the pump have a VSD? Are system controls operational?PLUMBING Is the piping in good condition? Unit covers in good condition?ELECTRICAL Is there accss around equipment?Is the motor high efficiency? Is the piping insulated complete and in good condition?Does the system have automatic controls? Year Installed: 2003 Manufacturer: Slant-Fin? Model: Mulkti/Pak 80? Size: 840BTUH per foot (active length) Electrical: none EXISTING CONDITIONS AND DEFICIENCIES PUMP ATC Page 35 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 LAUNDRY AREA FANS & HOODS Manufacturer: unknown Location: exterior wall Tag/Model/Capacity/Electrical unkonown Y N NA Y N NA ATC X X Does the system have automatic controls? X X ELECTRICAL X X Is the motor high efficiency? X Are automatic dampers in good condition & operating?X Is ther a localized disconnect? X Overall condition, clean, clutter free, no vibration or noise?X Does the unit have a VSD? X PLUMBING X Are ther localized drains? MAINTENANCE X Is the system flow diagram mounted in room? X Is the O+M located nerby or in a file? X Is there a service contractor? X X X motor benchmark is 18 years motor benchmark is 18 years 1. Intake and exhaust hoods added recently, past year, to comply with DPH requirements. LAUNDRY ROOM EXTERIOR WALL- FANS, INTAKE & EXHAUST HOODS Is there accss around equipment? Year Installed: 1980? & 2010 Type: single fan, constant volumn. EXISTING CONDITIONS AND DEFICIENCIES AIR HANDLING UNIT Is the ductwork insulated complete and in good condition? Is the ductwork in good condition? Is emergency power a requiremnt? Unit in good condition? Are system controls operational? ENERGY CONSERVCATION MEASURES Is unit current energy code compliant? STANDRAD AND CODE ISSUES Current code compliant? 0 fan unit benchmark is 25 years.0 END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 22 fan unit benchmark is 25 years.15 COMMENTS: Page 36 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 KITCHEN MAKE UP AIR UNITHEAT RECOVERY VENTILATOR(AIR-TO-AIR) Manufacturer: McQuay (now Dakin) Location: attic mechanical room Model: LYF106cv Capacity: 2310 CFM @ 1.75inWC. Electrical: supply fan 1.5 hp motor, 208-3ph (1725RPM) Heating: None Y N NA Y N NA ATC X X Does the system have automatic controls? X X ELECTRICAL X X Is the motor high efficiency? X X Is ther a localized disconnect? X X Does the unit have a VSD? X PLUMBING X Are ther localized drains? MAINTENANCE X Is the system flow diagram mounted in room? X Is the O+M located nerby or in a file? X Is there a service contractor? X X X motor benchmark is 18 years X 1.Unit model discontinued by manufactuer, replacemnt unit not compatable. 2.Unit controls have been updated, dampers not working, coils and HX dirty, etc, Is there accss around equipment? Year Installed: 1980 Type: single fan, constant volumn. Cooling: None EXISTING CONDITIONS AND DEFICIENCIES AIR HANDLING UNIT Is the ductwork insulated complete and in good condition? Is the ductwork in good condition? Unit in good condition? Are automatic dampers in good condition & operating? Is unit current energy code compliant? Overall condition, clean, clutter free, no vibration or noise? Are system controls operational? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 0 fan unit benchmark is 25 years.0 ENERGY CONSERVCATION MEASURES replacemnt with new make-up air unit with VFD COMMENTS: MAKE UP AIR UNIT Page 37 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 KITCHEN AREA EXHAUST FANS Manufacturer: Loren Cook Location: attic Tag/Model/Capacity/Electrical EF-1 Cooking Hood, unknown,3800CFM@1.00inWC, 1.5hp(208-3ph). EF-2 Dishwasher Hood, L2, 600CFM@0.75inWC, 1/4hp(120-1ph). EF-3 Washdown Area, CVD, 200CFM@0..375inWC, 1/12hp(120-1ph). Y N NA Y N NA ATC X X Does the system have automatic controls? X X ELECTRICAL X X Is the motor high efficiency? X Are automatic dampers in good condition & operating?X Is ther a localized disconnect? X Overall condition, clean, clutter free, no vibration or noise?X Does the unit have a VSD? X PLUMBING X Are ther localized drains? MAINTENANCE X Is the system flow diagram mounted in room? X Is the O+M located nerby or in a file? X Is there a service contractor? X X X motor benchmark is 18 years X 1.Unit model discontinued by manufactuer, replacemnt unit not compatable. EF-2 & EF-3 END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 0 fan unit benchmark is 25 years.0 ENERGY CONSERVCATION MEASURES replacemnt with new unit with ECM motor. COMMENTS: Is unit current energy code compliant? Are system controls operational? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? Unit in good condition? Is there accss around equipment? Year Installed: 1980 Type: single fan, constant volumn. EXISTING CONDITIONS AND DEFICIENCIES AIR HANDLING UNIT Is the ductwork insulated complete and in good condition? Is the ductwork in good condition? Page 38 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 DOMESTIC WATER HEATERS (DWH-3&4) Location: bathing rooms Capacity: flow 4.8gpm at 80deg.F rise Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace. 1.Unit model discontinued by manufactuer, replacemnt unit not compatable. Is the piping insulated complete and in good condition?Is the piping in good condition? Year Installed: 2006 Manufacturer: Noritz Burner, Manfacturer: Noritz Model:N-084M-DV Model: NA Equipment Type: Direct Size: not applicable Firing Rate: 236,000 BTUH Fuel: Propane Electrical: 1amp, 120-1ph EXISTING CONDITIONS AND DEFICIENCIES TANK BURNER Are there visual signs of leaks in water,fuel or combustion exhhaust?Is the motor in good condition? Are the drain and safety valves properly piped?ELECTRICAL Is the piping in good condition?Is the motor high efficiency? Are the valves in good condition?Is ther a localized disconnect? Are there valve tags?PLUMBING Are there sufficient pressure gauges?Are ther localized drains? Are there sufficuent temperature sensors?Is there piped make-up water? Is the flue and breeching insulation in good condition?Is there a backflow preventer on the make-up line? Is there a combustiion air source?Is there a PRV on ther make-up water line? Is the room under a negative pressure versus surrounding spaces?Is the fuel piping in good condition? Is there accss around equipment?MAINTENANCE Overall condition, clean, clutter free?Is the system flow diagram mounted in room? Is boiler equipped with HI & LO water cutoffs? Is there proper air control devices (air seperator, expansion tank, air vents)?Is the O+M located nerby or in a file? Is barometric damper in good condition?Is there a service contractor? Are system controls operational?Is recent combustion efficiency test posted or on file? STANDRAD AND CODE ISSUES Is the flue and breeching installed per code, pitch & length?Is unit current energy code compliant? Is the combustion air source code compliant? Is emergency power a requiremnt? ENERGY CONSERVCATION MEASURES Is fuel cutoff device installed? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 2 heat exchanger, benchmark is 10 years COMMENTS: DWH-3: OTPT BATH DWH-4: WEST BATHING DWH-3:DATA Page 39 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 DOMESTIC WATER HEATERS (DWH-1 &2) Location: boiler room Capacity: recovery 258 gph at 90deg.F rise Y N NA Y N NA X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X End of useful life, replace with indirect type storage tank. 1.Nearby piping has external service corrision.4. 2.Poor combustion process as noted by backdraft damper soot. 3.DWH-2, burner controller replaced, date unknown. DWH COMBUSTION BACK DRAFT DAMPERDWH PIPING burner motor benchmark is 18 years COMMENTS: DWH-1 DWH-2 ENERGY CONSERVCATION MEASURES 8 burner, benchmark is 15 years Common flue vent requires shudown both units to service. Is fuel cutoff device installed? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 3 storage tank, benchmark is 10 years 11 Is boiler equipped with HI & LO water cutoffs? Is there proper air control devices (air seperator, expansion tank, air vents)?Is the O+M located nerby or in a file? Is barometric damper in good condition?Is there a service contractor? Are system controls operational?Is recent combustion efficiency test posted or on file? STANDRAD AND CODE ISSUES Is the flue and breeching installed per code, pitch & length?Is unit current energy code compliant? Is the combustion air source code compliant? Is emergency power a requiremnt? Is the room under a negative pressure versus surrounding spaces?Is the fuel piping in good condition? Is there accss around equipment?MAINTENANCE Overall condition, clean, clutter free?Is the system flow diagram mounted in room? Are there sufficuent temperature sensors?Is there piped make-up water? Is the flue and breeching insulation in good condition?Is there a backflow preventer on the make-up line? Is there a combustiion air source?Is there a PRV on ther make-up water line? Are the valves in good condition?Is ther a localized disconnect? Are there valve tags?PLUMBING Are there sufficient pressure gauges?Are ther localized drains? Are there visual signs of leaks in water,fuel or combustion exhhaust?Is the motor in good condition? Are the drain and safety valves properly piped?ELECTRICAL Is the piping in good condition?Is the motor high efficiency? Is the piping insulated complete and in good condition?Is the piping in good condition? Year Installed: 2007 Manufacturer: BOCK Burner, Manfacturer: Carlin Model:73E Model: Elite, EZ-2 Equipment Type: storage Size: 67 gallon Firing Rate: 1.75 gph Fuel: No. 2 oil Electrical: 1/6 hp motor, 120-1ph EXISTING CONDITIONS AND DEFICIENCIES TANK BURNER Page 40 of 56 FACILITY: OUR ISLAND HOME DATE: JAN 2014 ATTIC MECHANICAL ROOM EXHAUST FAN Manufacturer: Barry Blower Location: attic Tag/Model/Capacity/Electrical EF-1 Attc Mechanical Room, BVB182,3000CFM@1.00inWC, 1hp(208-3ph). Y N NA Y N NA X X X X X X X Are automatic dampers in good condition & operating?X X X X X X X X X X X 1.Unit model discontinued by manufactuer, replacemnt unit not compatable. ATTIC MECHANICAL ROOM EXHAUST FAN Is there accss around equipment?ELECTRICAL Year Installed: 1980 Type: single fan, constant volumn. EXISTING CONDITIONS AND DEFICIENCIES AIR HANDLING UNIT ATC Is the ductwork insulated complete and in good condition?Does the system have automatic controls? Is the ductwork in good condition? Unit in good condition?Is the motor high efficiency? Is ther a localized disconnect? Does the unit have a VSD? PLUMBING Are ther localized drains? MAINTENANCE Is unit current energy code compliant? Overall condition, clean, clutter free, no vibration or noise? Is the system flow diagram mounted in room? Is the O+M located nerby or in a file? Is there a service contractor? STANDRAD AND CODE ISSUES Current code compliant? Is emergency power a requiremnt? END OF EQUIPMENT USEFUL SERVICE LIFE Useful Life Useful Life 0 fan unit benchmark is 25 years.0 ENERGY CONSERVCATION MEASURES replacemnt with new unit with ECM motor. COMMENTS: motor benchmark is 18 years Page 41 of 56 Appendix C: 2013 Energy Usage Page 42 of 56 Appendix D: HVAC Load Analysis Page 43 of 56 Page 44 of 56 Page 45 of 56 Page 46 of 56 Page 47 of 56 Page 48 of 56 Page 49 of 56 Appendix E: Domestic Water Storage Tank Analysis Page 50 of 56 Appendix F: Energy Conservation Measures (ECM): Analysis  ECM#1: Replace zone constant speed units with variable frequency drive ECM motors.  ECM#2: Replace main constant speed units with variable frequency drive ECM motors.  ECM#3: Replace main constant speed units with variable frequency drive ECM motors and delete the zone circulation pumps.  ECM#4: Replace existing oil fired domestic water heaters with indirect units using the boiler water for heating. Page 51 of 56 Energy Conservation Measure #1 Page 52 of 56 Energy Conservation Measure #2 Page 53 of 56 Energy Conservation Measure #4 Energy Usage 2013: Assuming summer months is for the domestic usage which includes the kitchen, laundry and general sins/lavatories; excluding the showers which have dedicated propane hot water heaters. Month Usage (Gallons) Total Cost ($) Unit Cost ($/gallon) Jun-13 875 3,083.05 3.5219 Jul-13 812 2,911.36 3.5863 Aug-13 735 2,700.87 3.6747 2,422 8,695.28 3.5898 Average 807 $2,898.43 3.5898 US Dept. of Energy (DOE) estimates energy savings for indirect hot water heaters of 15-25% as compared to a standard hot water storage tank. Estimated average monthly usage 807 gallons x 12 months = 9,684 gallons. Estimated Savings; 9,684 gallons x 0.20= 1,937 gallons Page 54 of 56 Appendix G: System Budget Costs #1: Boiler oil fired unit with indirect domestic hot water selected for increased building load rated at 1,712,000BTUH. Demolition existing boiler & horizontal. flue $4,500 Demolition hazardous material $0 By others Demolition piping, limited $3,500 boiler room disconnects, only Demolition oil piping $1,500 from filter to boiler New Boilers Hot water, oil fired with burner (qty 3) & controls $55,000 material & labor Piping and accessories $8,500 new and modify existing connections Oil piping and accessories $1,500 connect into existing New flues run in existing chimney (qty 3) $6,000 assuming existing vertical chimneys adequate Electrical $4,000 existing modification & new Rigging $3,500 new boilers Insulation, boiler room piping $5,000 Closeout (as builts, O+M, etc.) $1,500 Subtotal $94,500 General Conditions(10%) $ 9,450 Mechanical contractor as GC Mobilization(5%) $ 4,725 Coordination(5%) $ 4,725 Phasing (5%) $ 4,725 allowance working and maintaining active domestic hot water system Subtotal $118,125 Profit (15%) $ 17,719 Subtotal $135.,844 Bonding(2%) $ 2,717 Const. allowance $ 15,000 pending final design Total $153,561 Page 55 of 56 #2: Heat Recovery Ventilator (HRV) replacement in-kind. Demolition existing units $10,000 Unit located in attic, to be removed and disposed. Demolition hazardous material $0 By others Modification to attic ductwork distribution, limited $7,500 new and modify existing connections ERV’ to match existing $85,000 With heating only. Piping and accessories $9,500 new and modify existing connections Electrical $ 3,600 new and modify existing connections Rigging $6,500 new units, in attic Insulation, new ductwork & piping $4,000 Closeout (as builts, O+M, etc.) $1,500 Subtotal $127,600 General Conditions(10%) $ 12,760 Mechanical contractor as GC Mobilization(5%) $ 6,380 Coordination(5%) $ 6,380 Phasing (5%) $ 6,380 allowance working and maintaining active ventilation system Subtotal $146,740 Profit (15%) $ 29,348 Subtotal $176,088 Bonding(2%) $ 3,522 Const. allowance $ 15,000 pending final design Total $194,610 Page 56 of 56 #3: Heat Recovery Ventilator (HRV) replacement with three smaller units having limited air conditioning for dehumification. Demolition existing units $ 2,500 Unit located in attic, to be abandoned in place. Disconnect piping, electrical & ductwork as required Demolition hazardous material $ 0 By others Modification to attic ductwork distribution, limited $ 5,000 Related to the installation of new dedicated ERV’s. ERV’w with limited dehumidifying cooling capacity (Qty. 3) $ 75,000 material attic mounted, 3 tons cooling & 15MBH heating Piping and accessories $ 10,500 new and modify existing connections Electrical $ 8,500 existing modification & new Rigging $ 5,500 new units, in attic Insulation, new ductwork & piping $ 5,000 Closeout (as builts, O+M, etc.) $ 1,500 Subtotal $113,500 General Conditions(10%) $ 11,350 Mechanical contractor as GC Mobilization(5%) $ 5,675 Coordination(5%) $ 5,675 Phasing (5%) $ 5,675 allowance working and maintaining active ventilation system Subtotal $141,875 Profit (15%) $ 21,282 Subtotal $163,157 Bonding(2%) $ 3,663 Const. allowance $ 15,000 pending final design Total $181,820