PV 1017b 5/99
1
SPECIFICATION FOR DOMESTIC WATER HEATERS
Power Combustion, Gas-Fired Water Heaters with Nickel-Plated Storage Tanks
Furnish and install the following
MAXIM
gas water heater(s) as manufactured by PVI INDUSTRIES, INC of Fort Worth,
Texas.
Model
Btu/h
GPH Recovery
Storage
Qty
Number
Input
40° to _____°F
Tank Size
___
____________
__________
________
_______
gallons
___
____________
__________
________
_______
gallons
___
____________
__________
________
_______
gallons
Gas and Electrical Consumption
The water heater will operate at 83% thermal efficiency.
Each water heater will have a burner motor with the following maximum electrical ratings:
Heater Model Number
Heater Btu/h Input
Motor Horsepower
Voltage
Amps
______________
___________
_____
_____
____
______________
___________
_____
_____
____
______________
___________
_____
_____
____
To conserve energy, the water heater will not utilize a continuously operating, integral circulation pump between the
storage and heating section.
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. For maximum
thermal strength, the fireside of the heating surfaces will be of boiler-grade steel. For corrosion protection, 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.
(continued)
