Install Instructions

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The Discharge Line/Driptube:
• Temperature-pressure relief valve discharge pipe
must terminate at an adequate drain.
Water Damage Hazard
CAUTION
• Must not be smaller than the pipe size of the relief valve or
have any reducing coupling installed in the discharge line.
• Must not be capped, blocked, plugged or contain any valve
between the relief valve and the end of the discharge line.
• Must terminate a maximum of 6 in. above the floor.
• Must be capable of withstanding 250°F without distortion.
• Must be installed to allow complete drainage of both the
valve and discharge line.
Failure to install and maintain a new, properly listed temperature
and pressure relief valve will release the manufacturer from
any claims which may result from excessive temperature or
water pressure.
• Burn hazard.
• Hot water discharge.
• Keep clear of
temperature-pressure
relief valve discharge.
BURN
HOT
HOT
DANGER
Temperature-Pressure Relief Valve And Pipe Insulation
On some water heater models, the T&P valve will be installed
and covered by insulation to minimize heat loss. The insulation
has a hole on the bottom side to accommodate the valve
outlet and allow for the piping connection. Do not restrict the
outlet opening of the T&P valve. If supplied loose, the T&P
valve must be installed in the location indicated on the water
heater and covered with insulation (supplied) as follows:
T&P RELIEF VALVE INSULATION
(OUTLET OPENING ON UNDERSIDE)
T&P RELIEF VALVE
MANUAL RELIEF LEVER
T&P RELIEF VALVE
DRAIN LINE
Figure 12. T&P Valve Insulation
Locate the temperature and pressure relief valve on the water
heater (also known as a T&P relief valve) (see Figure 12).
1. Locate the slit running the length of the T&P relief valve
insulation.
2. Spread the slit open and fit the insulation over the T&P
relief valve (see Figure 12). Apply gentle pressure to the
insulation to ensure that it is fully seated on the T&P Relief
Valve. Once seated, secure the insulation with duct tape,
electrical tape, or equivalent.
Important: The insulation and tape must not block the
discharge opening or hinder access to the manual relief lever
(Figure 12). Ensure a discharge pipe is installed into the T&P
valve discharge opening per the instructions in this manual.
Vacuum Relief Valves
A vacuum relief valve, installed in the cold water supply line
above the top of the water heater, shall protect the water
heater against siphoning (loss of water due to loss of supply
pressure). Where heating equipment has a bottom supply,
the cold water supply piping shall be carried above the top of
the heater before being routed to the supply connection and
have a vacuum relief valve installed in it at a level above the
top of the storage tank. The vacuum relief valve shall be in
compliance with the latest edition of “Standard For Relief
Valves For Hot Water Supply Systems, ANSI Z21.22/CSA
4.4”.
Installation Of The Aquastat (Temperature Control)
This heater operates automatically under the control of the
aquastat, which responds to the demand of hot water. The
aquastat, thermowell, and wiring are included in the carton
containing the burner. The installation of the aquastat should
proceed as follows:
1. Locate the thermowell opening in the front of the heater.
2. Remove shipping nipple (if present).
3. Apply a good grade of pipe joint compound to the threads
on the well.
4. Install the thermowell in the tank opening, tighten firmly
to ensure there are no leaks.
5. Insert the sensing bulb of the aquastat into the well
and secure the aquastat to the well using the screw(s)
provided.
Electrical Supply
General wiring requirements:
Electric shock hazard. Can cause severe personal injury or
death if power source, including service switch on heater, is
not disconnected before installing or servicing. Installations
must comply with the latest editions of these codes:
• “National Electrical Code. (NFPA 70)”.
• Any additional local, state or national codes.
Wire the control to the burner as shown in the wiring diagrams
supplied with the burner.
If original wire supplied with the heater is to be replaced,
TYPE 105°C wire or equivalent must be used. Supply wiring
to heater and additional control wiring must be 14 GA. or
heavier. Provide an electrical ground as required by codes.
Printed on 7/3/2019 7:21 AM CT