A.O. Smith GPVL-50 Service Handbook page 11

Reconnect the manifold tube to the gas control valve/
thermostat (Note: Do Not apply any thread sealant
at this connection). To prevent any cross threading
the manifold tube should be started by hand (turn
clockwise for natural gas, counter-clockwise for L.P.).
Upon tightening with the fi ngers and confi rming it has
not been cross threaded, tighten nut with an 3/4" open
end wrench (see Figure 11).
3. Reconnect all the electrical connections to the bottom
of the gas control valve/thermostat, gently pushing
each connector up until it snaps into place (see Figures
10 & 11).
4. Reconnect the electrical power to the water heater in
the wall outlet and turn the main gas supply back "ON"
to the gas control valve/thermostat.
5. Restart the water heater by following the directions on
the "Lighting and Operating Instructions" label located
on the front of the water heater.
6. As the burner is heating (view flames through
viewport), test the manifold tube connection at
the gas control valve/thermostat by brushing on
an approved noncorrosive leak detection solution
(Important: Do Not splash the solution onto any
electrical connections. If a leak is detected, shut the
water heater down by following the directions on the
"Lighting and Operating Instructions". Repair the
leak(s) and repeat step 6 above).
7. Upon verifying proper operation of the water heater,
reinstall the insulation and the outer door.
Note: The structure of fl ame sensor/hot surface
igniter allows you to remove and replace them
separately.
ELECTRICAL
CONNECTIONS
NOTE: OUTER DOOR AND INSULATION NOT SHOWN FOR CLARITY.
Figure 11
MANIFOLD
TUBE NUT
HEX HEAD
SCREWS
BURNER SUPPORT STRIGHT SLOT FOR
BRACKET - 40-50K BURNERS
LOCATED IN THE WITH STRAIGHT
CENTRE OF THE MANIFOLD TUBES
CHAMBER.
Figure 12
INSULATION
PAD
OUTER DOOR
Figure 13
DRAIN
HOLE
RETAINER
CLIP
COMPONENT
BLOCK
Figure 14
CURVED SLOT FOR
60-75K BURNERS
WITH OFFSET
MANIFOLD TUBES
GASKET ON
REAR OF DOOR
COMBUSTION
MOUNTING CLIP
CHAMBER
(1 EACH SIDE)
OPENING
IGNITER/
SENSOR
ASSEMBLY
11