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WARNING
Toxic chemicals such as used for treatment of boilers or
non-potable water heating appliances shall never be
introduced into a potable water space heating system.
WARNING
This water heater shall not be connected to any heating
systems or component(s) previously used with a non-
potable water heating appliance.
If this water heater is also used for space heating applica-
tions, all piping and components connected to the water
heater shall be suitable for use with potable water.
Typical Installation
6
COLD WATER INLET
HOT WATER OUTLET
TEMPERED
WATER OUTLET
EXHAUST
VENT TO
OUTDOORS
GAS
SUPPLY
TEMPERATURE-
PRESSURE RELIEF
VALVE
MIXING
VALVE
DISCHARGE PIPE
(Do not cap or plug)
PROVIDE A 6
″″
AIR GAP
BETWEEN THE END OF
THE DISCHARGE PIPE
AND DRAIN
7' POWER CORD
(Factory supplied)
INTAKE FOR
COMBUSTION
AIR
FLUE PRODUCTS
DISCHARGE PIPE
AIR INTAKE PIPE
Vacuum Relief required
by some codes
(refer to local codes)
SHUTOFF VALVE
NOTE: To protect against untimely corrosion of hot and cold
water fittings, it is strongly recommended that di-electric
unions or couplings be installed on this water heater when
connected to copper pipe.
*Certain models do not have these connection assemblies shipped with the water heater. They (Part #9001262) are available
through the manufacturer. See “Repair Parts” section for ordering information.
This appliance has been design certified as complying with American National Standard/CSA Standard for water heaters and
is considered suitable for:
Water (Potable) Heating: All models are “considered suitable for water (potable) heating.”
Water (Potable) Heating and Space Heating: Certain models are “considered suitable for water (potable) heating and space
heating.” Refer to the model and rating plate of the water heater.
WARNING
When the system requires water at temperatures higher
than required for other uses, the hot water system may
require a means such as a mixing valve to be installed
to temper the water at certain points of use. Some peo-
ple are more likely to be permanently injured by hot
water than others; these include the elderly, children,
the infirm, or the physically/mentally handicapped.
Before immersing yourself or anyone else in hot water,
be sure to check the water temperature. WARNING:
HOTTER WATER INCREASES THE RISK OF SCALD
INJURY. (Also see “Temperature Regulation” section)
Mixing valves are available at plumbing supply or hard-
ware stores. Follow manufacturers instructions for
installation of these valves.
*COLD (RETURN) RECIRCULAT-
ING LOOP CONNECTION MUST
BE INSTALLED ONLY IN THE
UPRIGHT POSITION
*HOT (OUTLET) RECIRCULATING
LOOP CONNECTION CAN BE
INSTALLED WITHIN 360° RADIUS
DIRECTION
OF FLOW
DIRECTION
OF FLOW
CHECK VALVE
MARKED WITH
DIRECTION OF
FLOW ARROW
HEAT TRAP
Some models are equipped with
circulating loop fittings.