Advertisement
Benchmark 750-3000 Boiler Installation & Startup Manual
SECTION 5 – SAFETY DEVICE TESTING
Purge Switch Open During Purge Check Instructions
6. The unit should begin its start sequence, then shut down and display PRG SWITCH OPEN
DURING PURGE.
7. Replace the wire on the Purge switch and depress the CLEAR button. The unit should
restart.
BLOWER PROOF
AIR/FUEL VALVE COVER
(Rotate Counter-Clock-Wise
to Remove)
Figure 5-10a: Air/Fuel Valve Cover Location – BMK 1500 – 3000
Figure 5-10b: Air/Fuel Valve Cover Location – BMK 750/1000
OMM-0121_D • GF-205 • 5/9/2019
SWITCH
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
AIR/FUEL
VALVE
BLOCKED
INLET
SWITCH
AIR/FUEL VALVE COVER
(Rotate counter-clockwise to
remove)
Page 95 of 122
Advertisement
