Rev 8/2014
PrecisionTemp, Inc • 11 Sunnybrook Drive • Cincinnati, Ohio, 45237 • 1-800-934-9690 •
fax 513-641-0733 52
SB-12 Combination Gas Valve Replacement
Model: PT-200FT, PT-200RC & PT-56
Software version: All
Tools required: Pipe wrench
12” adjustable wrench
Pipe sealant
Process:
1. Disconnect the power to the booster heater.
2. Disconnect the blue & white wires connected to the combination gas
valve.
3. Turn off the gas supply to the booster heater.
4. Separate the closest gas union outside of the booster heater.
5. Remove all gas line plumbing between the gas valve and half union.
6. Separate the union to the left of the modulating gas valve.
7. Remove the combination gas valve and modulating gas valve from the
remaining gas train.
8. Install new combination gas valve in reverse order using approved pipe
sealant, ensuring that sealant does not get into the modulating gas valve.
9. Pressurize the gas line.
Be sure to check all gas fittings with an approved leak test solution
before restarting the PT-200.
Note:
It may take several ignition attempts to purge all the air from the refitted gas
line.
Kit Parts List:
PT-200 & PT-56 Solenoid Valve
Reference Illustrations:
200-9 Combination Gas Valve
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