Watts Aerco Benchmark Series - Page 71

Benchmark Platinum-Edge: Operation-Service Manual
SECTION 5 – SAFETY DEVICE TESTING
OMM-0137_D • GF-211 • 7/16/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 71 of 146
Purge Switch Open During Purge Check Instructions
Figure 5-11a: Air/Fuel Purge and Ignition Locations – BMK 750/1000
Figure 5-11b: Air/Fuel Purge and Ignition Locations – BMK 1500 – 3000
TO BLOWER
Purge Position
Switch
AIR IN
VALVE
POSITION DIAL
AIR/FUEL VALVE
SWITCH WIRING
BREAKOUT
172
171
170
169
Ignition Position
Switch
Ignition Position Switch
Purge Position Switch
AIR IN
TO BLOWER