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1. All piping, fittings, valves and other
components, including welding materials, must
be suitable for drinking water systems.
2. The on/off valve must be installed in the cold
water inlet of the water heater between the
main water supply line and the water heater.
3. Flush the water line to remove any debris
before installing the water heater.
4. There is a wire mesh filter in the cold water inlet
for filtering debris into the heater. This requires
regular cleaning to maintain optimal flow.
3.12 Pressure Relief Valve
The water heater has a built-in high temperature
disconnect switch as a standard safety function
(called a Hi-limit switch), so a "pressure only"
safety valve is required.
The unit is not equipped with an approved
Ÿ
pressure reducing valve.
An approved pressure relief valve must be
Ÿ
installed at the hot water outlet.
The pressure relief valve must comply with ANSI
Ÿ
Z 21.22 • CSA 4.4. Installation must comply with
local regulations.
The input capacity of this series of water heaters
Ÿ
must be at least 199 000 BTU/h.
The pressure relief valve is rated for a maximum
Ÿ
pressure of 150 psi (1 Mpa).
The drain line of the pressure reducing valve
Ÿ
must be guided so that hot water does not
splash out and cause damage or personal injury.
Connect the drain hose to the pressure relief
Ÿ
valve so that the end of the tube is 6 inches(152
mm) from the floor. The tube must be
completely drained without any bends or
blockages.
If the pressure relief valve is periodically
Ÿ
discharged, this may be due to thermal
expansion.
in the closed water supply system. Please
Ÿ
contact your water supplier or local plumbing
professional to find out how to correct this
situation. Do not block the pressure relief valve.
The pressure relief valve must be manually
Ÿ
operated periodically to check that it is operating
correctly. Before manually operating the valve,
check that the pressure relief valve is vented in a
safe place.
Do not place a valve between the safety valve
Ÿ
and the water heater.
3.13 Electrical Connections
WARNING
Comply with the electrical code
Ÿ
requirements of local authorities with
jurisdiction. If there is no such requirement,
please follow the current version of the
National Electrical Code ANSI/NFPA 70 or
the current Canadian version of CSA C22.1
Canadian Electrical Code Part 1.
When repairing or replacing parts in the
Ÿ
water heater, mark all wires before
Disconnect to make it easy to reconnect.
Incorrect wiring can result in incorrect and
dangerous operation. Confirm correct
operation after repair.
Failure to follow these warnings can result
Ÿ
in personal injury or death.
1. The water heater must be grounded. Do not
connect the ground wire to a gas or water pipe.
2. The water heater requires a 120 VAC, 60 Hz
power supply and is properly grounded.
For maintenance reasons, appropriate
Ÿ
disconnects (i.e. on/off switches, power plugs,
etc.) must be provided to control the main
power supply to the water heater. (Must
comply with local regulations.)
Connect the power supply to the water heater
Ÿ
exactly as shown in the wiring diagram.
3. The plug of the water heater is not plugged into
the standard American three-pin plug, and the
socket must be properly grounded.
4. A surge protector is recommended to protect
the equipment from power surges.
Installation
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