PVI Industries Water Heater PV 6804 User Manual

SPECIFICATION FOR DOMESTIC WATER HEATERS  
Condensing, Firetube, Gas-Fired Water Heaters with Polymer-Lined Storage Tanks  
Furnish and install a PLATINUM condensing firetube gas water heater(s) as manufactured by PVI Industries, LLC  
of Fort Worth, Texas. Supply quantities and model numbers as indicated on the plumbing schedule.  
Gas and Electrical Consumption  
The water heater will operate at 95% thermal efficiency when tested to ANSI Z21.10.3/CSA 4.3. The water heater  
will comply with the thermal efficiency, standby loss, and all other requirements of ASHRAE 90.1-2001.  
Pressure Vessel and Heating Surfaces  
The water heater will be constructed and stamped in accordance with Section IV, Part HLW of the ASME code.  
The storage section and heat exchanger of the water heater will be National Board Registered for a working  
pressure of 160 psi.  
The heat exchanger will be a firetube design with the combustion chamber and all heating surfaces completely  
water-backed. The fireside of the combustion chamber will be of boiler-grade steel. The waterside of the combustion  
chamber will be non-ferrous and sealed with PTFE polymer. The fire tubes will be solid copper. The heating surfaces will  
be removable by unbolting from the pressure vessel, allowing 100% access to waterside surfaces. Heat exchanger  
removal will provide a manway sized opening, allowing access to 100% of interior surfaces. All tank connection fittings  
will be nonferrous and removable from the tank.  
Tank Lining  
The entire lining will be applied after the tank is completely fabricated and all welding is completed. Lining will be a  
thermoplastic polymer that is NSF 61 approved and consist of FDA compliant materials. Lining will consist of multiple  
applications creating a continuous and nonporous barrier with no interruptions or discontinuities; including the tank-to-  
fitting transitions. Lining will be confirmed to be 100% void-free by the ASTM D-5162 wet electrode standard. Testing  
will occur only after complete pressure vessel fabrication with all welding completed. Lining will have a dielectric  
resistance of 1600 volts per mil.  
The lined tank will not require anode rods or electronic anodes and none will be used.  
Burner and Venting  
Combustion will be provided by a pre-mix, fan-assisted, ported stainless steel burner. The gas train will meet the  
requirements of UL, FM and IRI for water heaters with a maximum input of 399,000 Btu/h.  
Water heater will be a category IV, condensing, positive pressure appliance and UL approved for PVC venting  
material. Water heater will vent through-the-wall unassisted for 100 equivalent feet through four-inch diameter pipe.  
Appliance will simultaneously be able to accept direct inlet combustion air through up to 100 equivalent feet of four-inch  
diameter material.  
(continued)  
PV 6804 8/07  
1
 

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