PV 1017b 5/99
2
SPECIFICATION FOR DOMESTIC WATER HEATERS
Power Combustion, Gas-Fired Water Heaters with Nickel-Plated Storage Tanks
(continued)
Lining
The lining will:
be applied only after the tank is completely fabricated and all welding is completed.
be a nonferrous, electroless nickel alloy consisting of 90% nickel and 10% phosphorus applied by a laboratory-
controlled, chemical plating process.
be continuous and nonporous with no interruptions or discontinuities, particularly at all tank-to-fitting transitions.
bond to the tank by cohesion (sharing electrons with the steel) at a force in excess of 30,000 psi
have a hardness of 50 Rockwell C and be harder than the underlying steel tank.
require
no
sacrificial anode rods for protection.
For additional protection against galvanic corrosion, which may occur within the potable water system, the nickel
plating may have an optional fluoropolymer overcoat.
Burner and Venting
Combustion will be provided by a forced-draft power burner with a gas train meeting the specifications of:
___ UL (standard equipment)
___ FM
___ IRI
___ Other ______________________
Water heater will be a category I, non-condensing appliance. It will be UL listed for use with non-pressurized, type B
venting material.
Safety Controls
As a minimum, the heater will be equipped with the following:
•
electronic flame monitoring with pre-purge (140,000 to 399,000 Btu/h) or electronic flame safeguard with pre-
purge and flame status indicating lights (540,000 to 1,400,000 Btu/h)
•
two
immersion
operating thermostats
•
an
immersion
temperature limiting device
•
an ASME- or AGA-rated temperature and pressure relief valve
•
and options as selected on form PV 6137
Warranty Summary
The burner and all heater parts will have a one-year warranty. Storage tank will have a
ten-year
warranty covering
manufacturing or material defects, and/or the production of rusty water. Tank and heating surfaces will have a non-
prorated,
three-year
warranty against failure due to scale buildup with no provisions for periodic cleaning for warranty
coverage. If indicated here, the heater will also have a _____ first year or ____ long-life service policy, which will cover
replacement labor and freight costs under certain conditions. This summary is not a warranty. Consult warranty and
policies for full details.
Complete copies of all warranties and service policies, including all exclusions and
conditions, will be presented to the owner as part of the submittal package.
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