Request for Proposal Domestic Hot Water System Replacement At Sun Valley High School Penn Delco School District

Request for Proposal Domestic Hot Water System Replacement At Sun Valley High School Penn Delco School District Alban Engineering Inc. P.O. Box 1168 Hunt Valley Md. 21030 Ph: 410-252-6135 April 20, 2015

Domestic Hot Water System Replacement General: The scope of work includes the replacement of the existing Domestic Hot Water Generation Equipment including water storage and all associated piping located within the Mechanical Equipment room, roofing work, electrical work, controls and interlock etc. in a fully turnkey fashion. The contractor is responsible for obtaining all permits and all work shall comply with the Authorities having Jurisdiction (AHJ). Additionally all work shall comply with NFPA 54, NSF 61 and be certified as Lead Free. Install all equipment per the manufacturer s recommendations and guidelines. Submit shop drawings and design layout for owner review. Provide O&M manuals at the completion of the project. The project warranty shall be for one (1) year after substantial completion. See attached for the domestic hot water heater warranty. Existing Conditions/Demolition: The existing domestic hot water system to be removed includes a hot water storage tank (approximately 52 x52 x105 high), Teledyne Lars summer gas fired boiler (Model 7W1200) with circulating water pump, Shell and Tube Heat Exchanger ( with shell and tube side base mounted end suction pumps), Heat Exchanger support, concrete housekeeping pads, boiler flue, heating water piping to the heat exchanger, domestic water piping (cold water, hot water, hot water recirculation), piping insulation, hangers and valves for piping being removed, natural gas piping (to summer boiler only) and all associated interlock wiring and controls. The existing boiler flue shall be removed in its entirety and roof patched to match existing by a certified roofing contractor. The existing domestic hot water recirculation pumps serving the School and Kitchen shall remain and be reused. Similarly the existing mixing valve shall be reused and repiped. Disconnect all power and remove wiring back to the panelboard. New System: The new system shall be comprised of three (3) high efficiency gas fired water heaters to produce 140f supply to the kitchen and existing mixing valve which shall be balanced to supply 110f hot water to the school. All piping shall be type K copper with wrought copper fittings and lead free soldered joints. Provide 1 ½ thick fiberglass insulation for all domestic hot and cold water ping 1 pipe size and larger and 1 thick fiberglass insulation on all domestic water piping less than 1. All valves shall be full port, 2 piece ball type (Watts LFB 6080 or equal) up to 2 and standard port, 2 piece, ball type (Watts LFB 6000 or equal) for larger than 2. All valves shall be constructed using stainless steel trim and shall be certified as lead free. Check valves shall be swing type, lead free (Watts LFWCV) and install in the horizontal position. Balancing/Shut Off valves shall be lead free (Watts LCSM-61-S or equal). Expansion tank shall be pressurized type, ASME and lead free certified (Watts Series Delta). Each (Typical of 3) Domestic Water Heater shall be the high efficiency condensing style, 399,000 btu input, 125 gallon minimum storage volume, ASME stamped with ASME rated T&P relief valve, CSD-1 compliant controls, 120v/1 phase power and shall be manufactured by PVI or Bock. Install on 6 thick concrete housekeeping pad and provide condensate acid neutralization trap for each unit, pipe to closest floor drain. Install intake and exhaust vents individually for each water heater up through the roof per the manufacturer s recommendations. Provide 18 minim high roof curb for pipe penetration. Patch all roof openings water tight by a certified roofing contractor. Reconnect to the existing non interruptible rate gas service as recommended by the manufacturer. All gas piping shall be schedule 40 black steel, painted yellow, and installed per local code requirements and the International Plumbing Code (IPC). Provide valved and capped connections and a location in the boiler for a future 200 gallon domestic water storage tank. April 20, 2015

Attachments: Partial floor plan demolition Partial floor plan new work Domestic water piping demolition sketch Heating water piping demolition sketch Domestic water piping new work sketch Domestic water heater information Photos End April 20, 2015

C ONQUEST Condensing Water Heater UP TO 97% THERMAL EFFICIENCY AT FULL RATE FROM 40 F TO 140 F TANK AND HEAT EXCHANGER MADE FROM AquaPLEX ENGINEERED DUPLEX STAINLESS STEEL ALLOY Featuring... ENGINEERED DUPLEX ALLOY No tank linings. No anodes of any type. 15-YEAR TANK AND HEAT EXCHANGER CORROSION WARRANTY SEAMLESS VFD MODULATION REDUCES CYCLING AND IMPROVES EFFICIENCY UP TO 99% DURING LOW LOAD CONDITIONS 399 500 600 700 800 MBH INPUTS 130 GALLON TANK A S M E HLW ASHRAE 90.1-2010 compliant SCAQMD compliant Engineered Water Heating Solutions

CONQUEST Condensing Water Heater With a tank and heat exchanger constructed of AquaPLEX duplex stainless steel alloy, the Conquest water heater combines an advanced fuel saving design with the extended product life long desired by the owners of condensing equipment. Corrosion Resistance AquaPLEX is inherently corrosion resistant and entirely eliminates the need for a tank lining and anode rods, whether sacrifi cial or impressed current. Because there s no corrosion, there s simply nothing for an anode rod to do. And unlike 316L stainless steel, AquaPLEX is immune to chloride stress corrosion cracking, a known failure mode of 316L in potable water. Condensing Efficiency Effi ciency is accomplished through a down-fi red design beginning with a submerged combustion chamber and continuing through an array of helical fi re tubes. Combustion gases are counter-fl ow to the direction of the potable water. This enables the coolest fl ue gases to contact the coldest water and raises lowfi re efficiency to 99%. Control enclosure Hot outlet Premix, low NOx surface burner with VFD modulation and quiet operation ENGINEERED DUPLEX ALLOY The pressure vessel, fi re tubes and combustion chamber in the Conquest water heater are fabricated from AquaPLEX duplex alloy. AquaPLEX combines the grain structures of both 300 and 400 series stainless steels for unequalled corrosion protection. Upper tank circulator Submerged AquaPLEX combustion chamber Helically coiled AquaPLEX fire tubes AquaPLEX tank Fiberglass insulation and 100% recycled polyethylene jacket Condensate collection area ASME HLW stamped for 150 psi working pressure Cold water inlet Vent connection Condensate drain connection

ACHIEVES HIGH EFFICIENCY IN THE LAB AND MAINTAINS HIGH EFFICIENCY ON THE JOB Upper Tank Circulator During burner operation, Conquest energizes an integral circulating pump that forces water across the heating surfaces in the hottest part of the tank. More aggressive contact between the water and heating surfaces improves effi ciency and the scouring action helps to reduce the buildup of scale. Circulation also helps to equalize tank temperature. NON-CONDENSING ZONE WARM WATER RETURN FITTING Both Warm and Cold Tank Connections Constant circulation of hot water into the cold fi tting on a condensing water heater lowers the effi ciency. Conquest provides a dedicated fi tting for connection to building return loops or side-arm tanks, maintaining two distinct temperature zones and allowing only the coldest water to enter the lower condensing zone of the water heater. CONDENSING ZONE COLD WATER INLET FITTING Low Standby Losses* (is tankless that much better?) Fiberglass insulation and a small tank size reduce standby heat losses as much as 37% below ASHRAE 90.1 limits. Standby heat loss equates to an annual cost of about $50; about the same as it costs to run a small pump. TempTrac operating control Modulating burner Variable speed blower motor Proportional gas regulator Variable frequency drive VFD Modulation Increases Efficiency and Reduces Cycling During Low Demand To reduce burner cycling during periods of low hot water demand, the higher input (semi-instantaneous) Conquest water heaters employ burner modulation with a variable speed blower. This allows low fl ow conditions to be met with continuous, low BTU input and without short-cycling. The reduction in energy input also improves thermal effi ciency up to 99%. * Conquest's low standby loss is documented by independent third party testing to an ANSI standard as mandated for Energy Star certification. It's a FACT! During periods when nominal demand is only a few gpm, the at-temperature storage capacity of the Conquest heater can meet the hot water requirement for 20 to 40 minutes before a burner cycle is required.

Modbus Enabled Operating and Modulation Control The TempTrac electronic operating control allows the building s automation system to monitor and control the operation of the Conquest water heater through builtin Modbus RTU protocol. Network communicated points include operating set point (remotely adjustable), modulation rate and alarm status. At the water heater, the control displays set point, sensed temperature, fi ring rate and alarm status. All parameters are fully programmable. Custom communication gateways are available for BacNet and Lonworks building automation systems. Multiple Positive-Pressure Venting Options Conquest is a category IV vented product listed for PVC and Polypropylene materials. Capable of sealed combustion with terminations in different pressure zones. Concentric venting is available on all sizes. Conventional Room air with sidewall vent SELECTED STANDARD EQUIPMENT Up to 97% thermal efficiency at full fi re from 40 F to 140 F Up to 99% thermal efficiency at low fire < 20 ppm NOx, SCAQMD listed Equipped for direct combustion air connection Vents through PVC or Polypropylene 15-year warranty for tank and exchanger (8 years full, 7 years prorated) PRESSURE VESSEL & HEAT EXCHANGER AquaPLEX tank (unlined duplex alloy) AquaPLEX combustion chamber and fire tubes, helically coiled, single-pass, 100% submerged Temperature and pressure relief valve Fiberglass insulation 100% recycled, polyethylene jacket Drain valve BURNER, OPERATING and SAFETY CONTROLS Pre-mix surface burner with VFD modulation and proportional gas/air control ( 500 MBH) UL and FM compliant gas train Programmable electronic operating control with digital temperature display embedded with Modbus RTU protocol Visual indication of modulation rate Electronic ignition control with pre-purge Manual-reset high limit control Electronic low-water cutoff Audible and visual alarm on any failure with contacts for remote notification Relay and proving contact for air louvers Sealed combustion with roof terminations Sealed combustion with sidewall terminations CODES & STANDARDS ASME HLW stamped for 150 psi Intertek /ETL listed to ANSI Z21.10.3/CSA 4.3 Intertek /ELT listed for PVC or Polypropylene vent material and zero-clearance installation DOE/EPA Energy Star NSF-5 NSF/ANSI 372 low lead ASHRAE 90.1 OPTIONAL EQUIPMENT CSD-1 controls (500 to 800 MBH) LP gas operation Condensate neutralization system Bacnet or Lonworks protocol gateways

C ONQUEST Condensing Water Heater Model Input Btuh Modulation Recovery GPH (thermal effi ciency) Gas 70 F to 140 F 40 F to 140 F Connection NPT Vent Diameter (ETL listed for longer vents with larger diameter) 40 L 130A-GCL 399,000 No 657 (96%) 471 (97%) 3/4 4" @ 100 equivalent ft 50 L 130A-GCML 500,000 Yes 823 (96%) 588 (97%) 1 4" @ 100 equivalent ft 60 L 130A-GCML 600,000 Yes 988 (96%) 699 (97%) 1 6" @ 150 equivalent ft 70 L 130A-GCML 700,000 Yes 1152 (96%) 815 (97%) 1 6" @ 150 equivalent ft 80 L 130A-GCML 800,000 Yes 1317 (96%) 932 (97%) 1 6" @ 150 equivalent ft Operating Weight (lbs.) 1800 Recoveries and thermal efficiency derived from DOE 10 CFR 431 testing requirements (ANSI Z21.10.3 @ 70 F to 140 F). Recoveries and thermal efficiency based upon 40 F entering water temperature. Empty weight for all models is 680 lbs. Shipping weight is 880 lbs. Standard Electric CONDENSATE DRAIN 1 2 " BARB FITTING T&P VALVE HOT OUTLET 2" NPT (CONNECT FROM TOP) 60 VENT CONNECTION 6.625 O.D. REFER TO MANUAL FOR VENT SIZING COLD INLET BUILDING RETURN GAS CONNECTION (CONNECT FROM TOP) TOP ACCESS OPENING 120V, 1ø, 60 hz. (all models < 11 amps) Gas Pressure (natural gas) 3.5" w.c. minimum fl ow pressure 10.5" w.c. maximum static pressure Minimum clearances Zero inches from sides and rear 15 inches from top Can be installed on combustible fl oor Emissions < 20 ppm NOx, SCAQMD compliant ELECTRICAL ENCLOSURE COMBUSTION AIR CONNECTION 6.625" O.D. REMOVABLE FOR DOORWAY ACCESS 33 3 4 4-1/4 REMOVABLE TOP SECTION FOR DOORWAY CLEARANCE 52 T&P VALVE 80 3 4 BUILDING RETURN 1" NPT (ON BACK) COLD INLET 2" NPT (ON BACK) DRAIN VALVE 1" NPT VENT CONNECTION FRONT VIEW SIDE VIEW PV 8298 4-2015 Engineered Water Heating Solutions www.pvi.com

Conquest CONDENSING WATER HEATER AquaPLEX Storage Tank and Heat Exchanger (unlined duplex alloy) 130 Gallon Tank MODEL INPUT BTU Modula ng RECOVERY GPH (Thermal Efficiency) 70 F to 140 F 40 F to 140 F GAS CONNECTION NPT VENT DIAMETER (ETL listed for longer vents with larger dia.) OPERATING Weight (lbs) 40 L 130A-GCL 399,000 No 657 (96%) 471 (97%) 3/4 4" @ 100 eq.. 50 L 130A-GCML 500,000 Yes 823 (96%) 588 (97%) 1 4" @ 100 eq.. 60 L 130A-GCML 600,000 Yes 988 (96%) 699 (97%) 1 6" @ 150 eq.. 1800 70 L 130A-GCML 700,000 Yes 1152 (96%) 815 (97%) 1 6" @ 150 eq.. 80 L 130A-GCML 800,000 Yes 1317 (96%) 932 (97%) 1 6" @ 150 eq.. Recoveries and thermal efficiency based upon DOE 10 CFR 431 tes ng per ANSI Z21.10.3 @ 70 F to 140 F. Recoveries and thermal efficiency based upon 40 F entering water temperature.. Dimensions are in inches unless otherwise indicated. For standard and op onal equipment, refer to form PV 8293. Empty weight is 680 pounds and shipping weight is 880 pounds (all models) Standard Electrical Service 120VAC, 1Ø, 60 Hz. All models < 11 amps. Venting Use a Category IV PVC, CPVC or ETL, UL, ULC or CSA listed stainless steel or Centrotherm InnoFlue SW Polypropylene vent. Minimum vent length is 5 eq. feet. Maximum vent length varies by model number and vent diameter. Do not size vent based only upon connection diameter at the appliance. Refer to installation manual for sizing requirements. Inlet Combustion Air Duct Use PVC or galvanized pipe. For model 40, up to 100 eq. ft. using 4" diameter pipe. For model 50, up to 60 eq. ft. using 4" diameter pipe. For models 60, 70 & 80, up to 150 eq. ft. using 6" pipe. Longer lengths are ETL listed with larger diameters, refer to installation manual. Gas Pressure - Natural Minimum inlet flow pressure 3.5" W.C. Maximum static pressure 10.5" W.C. For LP gas, refer to installation manual. Minimum Clearance from Combustibles Zero clearance from sides and rear, 24" from front, 15" from top. Can be installed directly on a combustible floor. Recommended Service Clearances PV 8294 11-2014 PVI INDUSTRIES, LLC Engineered Water Heating Solutions www.pvi.com Fort Worth, TX 800-784-8326 18" from all sides. Check local and national codes for additional clearance requirements. Emissions All models < 20 ppm NOx. PVI RESERVES THE RIGHT TO CHANGE THE DESIGN AND SPECIFICATION WITHOUT NOTICE.

Conquest GAS CONDENSING WATER HEATER 399 to 800 MBH AquaPLEX STORAGE TANK (UNLINED DUPLEX ALLOY) STANDARD FEATURES AND EQUIPMENT PERFORMANCE 96% thermal efficiency (per 10 CFR 431: ANSI Z21.10.3 @ 70 F to 140 F) Up to 99% thermal efficiency at low fire from 40 F to 140 F Low NOx emissions < 20 ppm NOx, SCAQMD compliant Equipped for direct combustion air connection Vents through PVC, CPVC or Polypropylene PRESSURE VESSEL AquaPLEX tank (unlined duplex alloy) Storage tank ASME stamped and National Board Registered for 150 psi MAWP CSA and ASME rated T&P relief valve (On 800 MBH model, standard valve meets ASME relief rating. CSA rating on 800 MBH models is optional) Fiberglass insulation Durable polyethylene jacket (100% recycled material) Drain valve HEAT EXCHANGER AquaPLEX combustion chamber and fire tubes, helically-coiled, single pass, 100% submerged WARRANTY 15-year tank and heating surfaces warranty covering waterside and condensate corrosion, leakage, production of rusty water, material defects and workmanship (PV903A) 1-year parts warranty (PV527) BURNER, OPERATING CONTROLS AND SAFETIES Pre-mix surface burner UL795 compliant gas train Electronic ignition control with pre-purge Programmable electronic operating control with digital temperature readouts, adjustable from 70 F to 190 F (consult factory for sanitizing applications, 180 F delivered water) Modbus RTU connectable (see optional equipment list for cable) Manual-reset temperature limiting device (high limit control) Electronic low water cutoff CSD-1 compliant controls on 399 MBH model (Optional on 500 to 800 MBH models) Remote on/off terminals Visual indication of firing rate Audible and visual alarm on any failure with remote contacts Proportional gas/air control with seamless VFD modulation (500 to 800 MBH models) Louver or power venter relay and proving contacts CODES AND STANDARDS Energy Star certified Intertek / ETL listed to US and Canadian safety standards Intertek / ETL listed for use with PVC, CPVC or Centrotherm InnoFlue SW Polypropylene (PP) Category IV vent material Intertek / ETL listed for zero-clearance and for installation directly on a combustible floor Intertek / ETL listed to NSF-372 for low-lead compliance Intertek / ETL listed for NSF-5 compliance FM compliant ASHRAE 90.1 compliant MISCELLANEOUS Condensate P trap (provided for field installation) OPTIONAL EQUIPMENT (factory installed) CSD-1 controls (500 to 800 MBH) (adds high and low gas pressure switches) Propane operation (consult factory) OPTIONAL EQUIPMENT (field installed/adjusted) CSA relief rating on temperature and pressure relief valve (800 MBH) Condensate neutralization system Vent termination cap for direct inlet air duct, 6-inch diameter Vent termination cap for exhaust vent 4-inch 6-inch 8-inch Factory authorized startup Air filtration box Pigtail kit for 120V plug-in power cord, 14/3 AWG, 12 ft. length PVC concentric vent kit ELECTRONIC OPERATING CONTROL OPTIONS (field installed) Plug in 485 serial cable to connect the electronic operating control to a Building Automation System (Modbus RTU Protocol) (field installed) Protocol gateway (requires optional 485 serial cable) (field installed) Select protocol (consult factory) BacNet IP BacNet MSTP LonWorks See complete warranty for details. Warranties are for potable water heating only. Separate tank warranties are provided for purified (<50μS/cm), process or otherwise non-potable water. PV 8293 02/2015 PVI INDUSTRIES, LLC FORT WORTH, TEXAS 76111 (800) 784-8326 (817) 335-9531 www.pvi.com PVI reserves the right to change the design and specification without notice.

125 Gallon ASME Series Modulating Condensing Commercial Water Heater Fuel Saving optitherm fulfills varying hot-water heating loads at lowest energy inputs! Tests confirm potential 15% fuel savings over on/off high-efficiency water heaters! optitherm features: 300,000-399,999-500,000 BTU maximum inputs Fully modulating from 135,000 BTU low input to maximum input Up to 97% thermal efficiency Five-year tank/heat exchanger limited warranty Automatic cathodic corrosion protection system NO SACRIFICIAL ANODE RODS PVC/CPVC/ABS venting - 240' maximum power vent length LCD user interface with optional BMS interface Dual helical-fin 3-stage heat exchanger insulation - Does not contribute to global warming Glass-fused-to-steel water vessel and heat exchanger Ultra-Low NOx - SCAQMD certified Natural gas or propane fuel Stealth Quiet operation NSF/ANSI 5 We take water heaters very personally!

This product is available from: 125 Gallon ASME Series Combustion Air Intake 4 PVC Gas Conn. Hot T & P Valve Hot Hot/Cold 90 Drain 30 68 Hot/Cold Gas Conn. T & P Valve 90 A C F G Cold Exhaust Vent Conn./ Condensate Assembly 4 PVC Dimensions and Connections Model OT300N-A OT400N-A OT500N-A Model OT300N-A D E B Top View Front View Side View Dimensions in Inches (cm) A B C D E F G 78.50 (199) 78.50 (199) 78.50 (199) 32.00 (81) 32.00 (81) 32.00 (81) 62.78 (159) 62.78 (159) 62.78 (159) 11.43 (29) 11.43 (29) 11.43 (29) Storage, Inputs, Recovery and Efficiency OT400N-A OT500N-A Storage GAL (L) 125 (473) 125 (473) 125 (473) Max. Rated Input BTU/HR (KW) 300,000 (87.9) 399,999 (117.2) 500,000 (146.5) 9.43 (24) 9.43 (24) 9.43 (24) Min. Rated Input BTU/HR (KW) 135,000 (39.6) 135,000 (39.6) 135,000 (39.6) Minimum and Maximum Vent Lengths - 4 / 6 Pipe Model All Models 61.43 (156) 61.43 (156) 61.43 (156) Caution: The recommended maximum hot water temperature setting for normal residential use is 120 F. Bock recommends a tempering valve or anti-scald valve be installed and used according to the manufacturer s directions to prevent scalding. www.bockwaterheaters.com Doc# 80050-A Rev. 11/13 110 South Dickinson Street, Madison, Wisconsin 53703 Toll Free 800-794-2491 Phone 608-257-2225 Fax 608-257-5304 74.00 (188) 74.00 (188) 74.00 (188) Recovery @ 100 F Rise GAL/HR (L/HR) 342 (1,295) 451 (1,707) 558 (2,112) Minimum Equivalent Pipe Length (per pipe run) Cold NPT Hot NPT Gas NPT Air Intake PVC Exhaust Vent PVC 2 2 1-1/2 4 4 2 2 1-1/2 4 4 2 2 1-1/2 4 4 1st Hr. Del. @ 100 F Rise GAL (L) 430 (1,627) 539 (2,040) 646 (2,445) Thermal Efficiency @ Max Input (%) Maximum Equivalent Pipe Length (per pipe run) Pipe Arrangement Air Intake (ft) Vent (ft) Air Intake (ft) Vent (ft) Power Direct Vent (2 Pipe) 20 / 50 20 / 50 50 / 120 50 / 120 Power Vent (1 Pipe) 0 / 0 20 / 50 0 / 0 100 / 240 Shipping Weight LBS(kg) 1,200 (544) 1,200 (544) 1,200 (544) Thermal Efficiency @ Min Input (%) 95 97 94 97 93 97 Note: Change the suffix "N" to "LP" to designate liquid propane fuel. T&P valve and brass drain valve factory installed. Standard Voltage (all): 120V, 60 Hz, 1P Maximum Working Pressure: 150 psi (1034 kpa) All Bock products meet or exceed current ASHRAE standards. Warning: Installation should be in accordance with all national and/or local codes. In the absence of local codes, refer to NFPA 54 or CSA B149.1.