10
INSTALLATION INSTRUCTIONS
Figure 9
1) Co-axial flexible
vent pipe kit
2) Union
3) Cold water manual
shut-of off valve
4) Cold water inlet
5) Expansion tank
6) Temperature &
pressure-relief valve
7) Overflow tube
8) Drain valve
9) Drain pan
10) Free-flowing
floor drain
11) Sight glass
12) Outer access door
13) Inner access doors
14) Drip leg
(Sediment trap)
15) Gas supply manual
shut-of off valve
16) Union
17) Gas control valve
18) Piezo igniter
19) Rating plate
20) Dip tube
21) Hot water outlet
22) Union
23) Burner
24) Burner orifice
25) Pilot
26) Electrode
27) Thermocouple
2
5
6
3
4
7
8
22
9
10
11
14
13
12
19
15
16
18
17
20
21
27
23
24
25
26
1
Minimum Rise
1/4”/foot (21mm/m)
If the cold water supply line has a built-in water
meter, check valve, or pressure-reducing valve, a
suitable expansion tank must be installed to prevent
pressure build-up or water hammer effect.
Otherwise, the warranty is void (
see Figure 9
). An
indication of pressure build-up is frequent dis-
charges of water from the relief valve. If the relief
valve discharges water on a continual basis, it may
indicate a malfunction of the relief valve, and a
qualified service technician must be called to have
the system checked, and the problem corrected.
Filling the Water Heater
NEVER
operate the water heater unless it is
completely filled with water. Failure to follow this
instruction can result in premature failure of the
water heater that is not covered by the warranty.
Check that all of the water piping connections have
been made. To fill the water heater:
1) Make sure that the water heater drain valve is
closed by inserting a flat head screwdriver into the
slot on the head of the drain valve and turning the
knob clockwise .
2) Open the cold water supply manual shut-off valve.
This valve must remain open, as long as the water
heater is in use.
NEVER
operate the water heater
with the cold water supply manual shut-off valve
closed.
3) To make sure the water heater is completely full of
water, open hot water faucets to let the air out of the
water heater and plumbing system. Leave the
faucets open until a constant flow of water is
obtained.
4) Check all of the plumbing connections to make sure
there are no leaks.
WARNING
A
