STA-RITE SR200NA Service Manual page 61

SECTION FOUR – Routine Maintenance and Professional Servicing
Heat Exchanger
(Continued from the preceding page)
5. Lift the Chamber Cover from the Combustion
Chamber.
6. Carefully remove the two top insulation pieces from
the Heat Exchanger.
7. Inspect the inward-facing surfaces of the Heat
Exchanger.
8. Reassemble by reversing steps 1 through 7 above.
To Remove the Heat Exchanger:
1. Turn off the filter pump and all electrical power to
the heater. Close the external Manual Gas Valve.
2. If the heater is below the water level of the pool,
close isolation valves to avoid draining the pool.
3. Remove the Upper Left and Upper Right Jackets
and disconnect the gas pipe back to the external
Manual Gas Valve.
4 Remove the Inlet/Outlet Manifold (all heaters) and
Manifold Adapter Assemblies (heaters built before
3/15/01). See Pages 4-21, 4-22, 4-23 and 4-26.
6. For indoor installations, remove the Vent Connector.
7. Disconnect the electrical supply wires at the junc-
tion box. Pull the Wiring Harness back clear of the
Junction Box to allow removal of the Combustion
Chamber Cover Assembly.
8. Unscrew the seven screws holding the cover tabs to
the chamber brackets.
9. Lift the chamber cover from the Combustion
Chamber.
10. Carefully remove the top insulation from the Heat
Exchanger.
11. The Heat Exchanger is held in position by bolts to
the Inlet/Outlet Manifold (heaters built after
3/15/01) or to the Manifold Adapter (heaters built
prior to 3/15/01). With these parts removed, the
Heat Exchanger can be lifted from the chamber.
12. Replace the Heat Exchanger by reversing steps 1
through 11 above.
N N N N O O O O T T T T E E E E : : : : When re-installing the Combustion
Chamber Cover, apply a bead of RTV 106 around
the cover flange before re-assembly. Torque the nuts
to 20-30 in-lbs. Allow 24 hours for the RTV to cure
before firing the heater for an extended length of
time.
S S S S a a a a f f f f e e e e t t t t y y y y P P P P r r r r e e e e c c c c a a a a u u u u t t t t i i i i o o o o n n n n s s s s : : : :
Fire or explosion hazard. Disconnect all
power to the heater and close the External Manual
Gas Valve before starting this procedure.
N N N N O O O O T T T T E E E E : : : : When replacing the Heat Exchanger:
1. Replace any damaged insulation. No gaps should
exist between the insulation and the Heat
Exchanger.
2. Use a soapy-water solution to leak test the gas pip-
ing, blower and burner flanges, and Combustion
Chamber sealing surfaces. Note the following:
a. When checking for leaks, raise the blower's out-
let pressure by blocking the flue outlet or vent
terminal with your hand.
b. The blower can be operated with the gas turned
off if the temperature setting on the Operating
Control Panel is lowered.
3. If leaks appear between the combustion chamber
and the cover, seal them with GE RTV 106.
The Thermal Regulator plug has a
spring behind it. Restrain it when removing it from
the Manifold to prevent it from flying and possibly
injuring persons nearby.
4-29