PVI Industries Water Heater PV 6314 User Manual

SPECIFICATION FOR DOMESTIC WATER HEATERS  
Power Combustion, Low Nox, Gas-Fired Water Heaters with Polymer-Lined Storage Tanks  
Furnish and install MAXIM power combustion 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 a minimum of 82% thermal efficiency when tested by an independent laboratory to  
ANSI Z21.10.3. The water heater will comply with paragraph 7.2.4.4, the thermal efficiency, the standby loss, and all  
other requirements of ASHRAE 90.1-1999.  
Pressure Vessel and Heating Surfaces  
The water heater will be a vertical fire tube design that is constructed and stamped in accordance with Section IV,  
Part HLW of the ASME code. Both the storage and heating sections of the water heater will be National Board  
Registered for a working pressure of 150 psi and will be pressure tested at 1-1/2 times working pressure. All tank  
connections will be non-ferrous. The fireside of the heating surfaces will be of boiler-grade steel. The waterside of the  
heating tubes will be sealed in copper. The heating tubes will be rolled, beaded, and seal welded into the tube sheets.  
The combustion side of the tube sheet will be insulated by a layer of ceramic fiber that will protect the tube sheet from  
both thermal stresses and failure that can result from the accumulation of scale and precipitants.  
Tank Lining  
The lining will:  
be applied only after the tank is completely fabricated and all welding is completed.  
consist of multiple applications of high-temperature fluoropolymer.  
be third-party tested to comply with NSF 61 standard.  
be continuous and nonporous with no interruptions or discontinuities.  
require no sacrificial anode rods for protection.  
Burner and Venting  
Combustion will be provided by a forced-draft power burner with a gas train meeting the following agency  
requirement for the input specified:  
___ UL (standard)  
___ FM  
___ IRI  
___ Other ______________________  
Burner and heating section will be certified to operate with NOx emissions not to exceed 30 ppm corrected to 3% O2  
(at or above 400,000 Btu) and 55 ppm corrected to 3% O2 or 40 nanograms per joule (below 400,000 Btu). Water  
heater will be a category I, non-condensing appliance. It will be UL listed for use with non-pressurized, type B venting  
material.  
(continued)  
PV 6314 4/04  
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