PVI Industries Water Heater Btu h GPH User Manual

SPECIFICATION FOR DOMESTIC WATER HEATERS  
Condensing, Gas-Fired Water Heaters with Nickel-Plated Storage Tanks  
Furnish and install the following POWER VT® gas water heater(s) as manufactured by PVI INDUSTRIES, INC of Fort  
Worth, Texas.  
Model  
Number  
Btu/h  
Input  
GPH Recovery Storage  
40° to _____°F Tank  
Qty  
___  
____________  
____________  
____________  
__________ ________  
__________ ________  
__________ ________  
_______ gallons  
_______ gallons  
_______ gallons  
___  
___  
Efficiency  
The water heater will operate at a thermal efficiency of 94% when tested to ANSI Z21.10.3. The water heater will  
comply with paragraph 7.2.4.4, the thermal efficiency and the standby loss 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. 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.  
Lining  
The tank will be a plated with electroless nickel (EN). Plating will occur after the pressure vessel is completely  
fabricated and all welding is completed. The EN plating will be a high-phosphorus (10%) and nonporous composition  
suitable for submersion service (ASTM B733 standard may be used as a guideline). The finished lining will not require  
sacrificial anode rods. For additional protection against galvanic corrosion, which may occur within the potable water  
system, the EN plating may have a high-dielectric-strength polymer overcoat.  
Burner and Venting  
Combustion will be provided by an induced-draft power burner that can operate with as little as 4-1/2 inches water  
column of gas pressure. The water heater will be UL listed for use with plastic venting materials. The heater will be  
capable of directly venting inlet air rated @ 120 equivalent feet and exhaust rated as follows: 4” vent - 50 equivalent feet  
on 1 MBtu/h model, 100 equivalent feet for other inputs; 6” vent – 390 equivalent feet on 1Mbtu/h model, 500 equivalent  
feet for other inputs.  
The burner will be equipped with a gas train meeting the specifications of:  
___ UL (standard equipment)  
___ FM  
___ IRI  
___ Other ______________________  
(continued)  
PV 6149b 2/02  
1
 

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