Watts Aerco Benchmark Series Operation And Service Manual page 71

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 5 – SAFETY DEVICE TESTING
Purge Switch Open During Purge Check Instructions
AIR IN
Figure 5-11a: Air/Fuel Purge and Ignition Locations – BMK 750/1000
Ignition Position
Switch
AIR/FUEL VALVE
SWITCH WIRING
BREAKOUT
Purge Position
Switch
Figure 5-11b: Air/Fuel Purge and Ignition Locations – BMK 1500 – 3000
OMM-0137_D • GF-211 • 7/16/2019
Purge Position Switch
TO BLOWER
AIR IN
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Ignition Position Switch
TO BLOWER
VALVE
POSITION DIAL
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