Pressure Relief Valve - Atwood OD50 Mode D'emploi

9. Place access door on lower flange lining holes in door up
with pins in flange. Carefully close the door while aligning
flue outlet with flue opening and pressure switch tube with
plastic bushing opening, securely screw door in place with
fastener already installed in door.
10. The appliance must be disconnected from the gas supply
piping system during any pressure testing of the system at
test pressures in excess of ½ psi. The appliance must be
isolated from the gas piping system during any pressure
testing at test pressures equal to or less than ½ psi.
Pressure inlet to valve, 13" W.C. maximum, 11" W.C.
minimum. Pressure at outlet of valve is factory set at
10" W.C.
11. Gas Manifold pressure tap on burner assembly.
The gas manifold pressure at this tap
is 9" w.c. =/- 0.5" w.c. for both the
OD50 and the OD50CW models.
m
fIre AnD/Or exPlOsIOn
• DO NOT use matches, candles or other sources of ignition
when checking for gas leaks.
12. Turn on the gas and check the water heater and all
connections for gas leaks with a leak detecting solution.
13. Turn on water supply line and check for water leaks.

PressUre relIef vAlve

m
sCAlDInG InjUry
• Valve is not serviceable, it must be replaced.
• Tampering with valve will result in scalding injury.
• Tampering with valve will void warranty.
m
exPlOsIOn
• DO NOT place a valve, plug or reducing coupling on outlet
part of pressure temperature relief valve.
THis valve is a safeTy comPonenT anD musT
noT be removeD for any reason oTHer THan
rePlacemenT.
This water heater is equipped with a pressure
relief valve that complies with the standard for Relief Valves and
Automatic Gas Shutoff Devices for Hot Water Systems, ANSI
Z21.22 CSA 4.4.
This valve protects against excessive water expansion only.
warning
warning
warning
This water heater has separate and dedicated protection for
excessive heat.
If you use a discharge line, do not use a reducing coupling or
other restriction smaller than the outlet of the relief valve. Allow
complete drainage of both valve and line.
for rePlacemenT ParTs:
• DO NOT install anything less than a pressure relief valve
certified by a nationally recognized testing laboratory
that maintains periodic inspection of product of listed
equipment or materials, as meeting requirements for Relief
Valves and Automatic Gas Shutoff Devices of Hot Water
Supply Systems, ANSI Z21.22 CSA 4.4. Valve must have
maximum set pressure not to exceed 100 psi.
• Install replacement valve into opening provided and
designated for this purpose on water heater.
• Installation must conform with local codes or in the
absence of local codes, Standard on Recreational
Vehicles, ANSI A119.2 or CAN/CSA-Z240RV.
WirinG insTrucTions
The appliance, when installed, must be electrically grounded
in accordance with local codes or, in the absence of local
codes, with the national electrical code, ansi/nfPa 70
and/or the csa c22.1, canadian electrical code.
It is required that the unit be connected through a switch that is
connected directly to a 12V DC battery or to the filtered side of
an AC/DC converter. Avoid unfiltered "linear" voltage sources.
Use a minimum of 18 gauge wire, UL and CSA Listed. Refer
to the Wiring Diagram. Install a remote switch in a convenient
location. Position the wall plate with the letters up. Before
making the connections, turn the switch to the OFF position.
RED is 12V DC Positive power IN.
GREEN is 12V DC Ground.
BLUE is 12V DC Pos. Lockout Lamp Signal.
(See illustration of typical switch configuration)
m
eleCTrICAl DAMAGe
• Label all wire prior to disconnection when servicing controls.
Wiring errors can cause improper and dangerous operation.
• Verify proper operation after servicing.
3
BLUE FROM W.H.
(LOCK-OUT LAMP)
+12 VDC
GAS- ORANGE FROM W.H.
caution