INSTALLATION INSTRUCTIONS
When assembling the hot and cold piping to the
water heater, use Teflon™ tape or a good food grade
of pipe joint compound, and ensure all fittings are
tight. It is imperative that open flame is not applied
to the inlet and outlet fittings, as heat will damage
or destroy the plastic lined fittings. This will result
in premature failure of the fittings, which is not
covered by the warranty.
Temperature and Pressure-Relief Valve
DO NOT
plug the temperature and pressure-relief
valve or its discharge line.
DO NOT
remove the
relief valve. Make sure the relief valve is properly
sized for the water heater. If the relief valve
continuously discharges water, call a qualified
service technician to correct the problem. Failure
to follow these instructions can result in property
damage, personal injury, or death.
To protect from excessive pressure and/or temperature,
the manufacturer has installed a temperature and
pressure-relief valve that meets the requirements of the
Standard for Relief Valves and Automatic Gas Shut-
Off Devices for Hot Water Supply Systems, CSA 4.4
in Canada and ANSI Z21.22 in the United States. This
relief valve has a maximum set pressure that does not
exceed the hydrostatic working pressure of the water
heater (150 psi = 1,035 kPa) and a Btuh rating equal
to or greater than the input rating, as shown on the
water heater rating plate. It should never be plugged or
removed from the opening marked for it on the water
heater.
Should this relief valve need to be replaced, use
only a new temperature and pressure-relief valve.
Never install an old or existing relief valve as it
may be damaged or inadequate for the working
requirements of the new water heater. This new relief
valve must meet all local codes or, at a minimum, the
requirements listed above. Never install any other type
of valve between the relief valve and the water heater.
8
1) Vent pipe
2) Draft hood
3) Union
4) Cold water
manual shut-off valve
5) Cold water inlet
6) Expansion tank
7) Temperature
& pressure-relief valve
8) Overflow tube
9) Drain valve
10) Combustion
air intake holes
11) Drain pan
12) Free-flowing floor drain
13) Sight glass
14) Resettable
thermal switch
15) Inner access door
16) Outer access door
17) Cap
18) Drip leg (Sediment trap)
19) Gas supply
manual shut-off valve
20) Union
21) Gas control
22) Rating plate
23) Piezo igniter
24) Dip tube
25) Hot water outlet
26) Union
27) Burner
28) Main burner orifice
29) Pilot
30) Thermocouple
31) Electrode
32) Manifold Spring
(on some models)
Figure 8
1
2
5
6
3
4
24
7
8
23
9
10 11
12
16
15
14 13
20
17
18
19
21
22
25
26
Minimum Slope
1/4”/foot (21mm/m)
27
29
31
30
28
32
