Operation; To Operate The Heater - A.O. Smith BTX-80 Operation Manual

Depth-of-entry mark
Marking the depth of entry is a way to check if the pipe has reached
the bottom of the fitting socket in step F. Measure the fitting depth
and mark this distance on the pipe O.D. You may want to add
several inches to the distance and make a second mark as the
primer and cement will most likely destroy your first one.
Apply primer to the surface of the pipe and fitting socket with a
natural bristle brush. This process softens and prepares the
PVC or CPVC for the solvent cementing step. Move quickly
and without hesitation to the cementing procedure while the
surfaces are still wet with primer.
E. Application of solvent cement
• Apply the solvent cement evenly and quickly around the
outside of the pipe at a width a little greater than the depth
of the fitting socket.
• Apply a light coat of cement evenly around the inside of the
fitting socket. Avoid puddling.
• Apply a second coat of cement to the pipe end.
NOTE: Cans of cement and primer should be closed at all times
when not in use to prevent evaporation of chemicals and hardening
of cement. They are also very flammable and should be kept
away from heat or flame.
F. Joint assembly
Working quickly, insert the pipe into the fitting socket bottom and
give the pipe or fitting a 1/4" turn to evenly distribute the cement.
Do not continue to rotate the pipe after it has hit the bottom of the
fitting socket. A good joint will have sufficient cement to make a
bead all the way around the outside of the fitting hub. The fitting
will have a tendency to slide back while the cement is still wet so
hold the joint together for about 15 seconds.
STEP E
STEP F
G. Cleanup and joint movement
Remove all excess cement from around the pipe and fitting
with a dry cotton rag. This must be done while the cement is
still soft.
The joint should not be disturbed immediately after the
cementing procedure, and sufficient time should be allowed
for proper curing of the joint. Exact drying time is difficult to
predict because it depends on variables such as temperature,
humidity and cement integrity. For more specific information,
you should contact your solvent cement manufacturer.

OPERATION

DO NOT ATTEMPT TO OPERATE WATER HEATER WITH COLD
WATER INLET VALVE CLOSED.
NEVER OPERATE THE HEATER WITHOUT FIRST BEING
CERTAIN IT IS FILLED WITH WATER AND A TEMPERATURE
AND PRESSURE RELIEF VALVE IS INSTALLED IN THE RELIEF
VALVE OPENING OF THE HEATER.

TO OPERATE THE HEATER

1. Close the heater drain valve by turning handle clockwise
.
2. Open a nearby hot water faucet to permit the air in the system
to escape.
3. Fully open the cold water inlet pipe valve allowing the heater
and piping to be filled.
4. Close the hot water faucet as water starts to flow.
5. The heater is ready to be operated.
THE "ON/OFF" SWITCH ON TOP OF THE UNIT SHOULD NOT
BE TURNED TO THE "OFF" POSITION UNLESS THE UNIT IS
BEING SERVICED.
16
STEP G
WARNING
CAUTION