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Benchmark Series Boilers Pre-Installation Electrical Power Guide
Figure 2a: Power Box Components, BMK750 & 1000 – INTERNATIONAL
24 VDC
POWER
SUPPLY
Figure 3a: Power Box Components, BMK1500 – 2000 – DOMESTIC
TAG-0048_Q • 5/16/2023
12V POWER
FUSE
SUPPLY
BLOCKS
24 VDC POWER
TRANSFORMER
TRANSFORMER
FLAME ROD
12 V POWER
SUPPLY
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
TERMINAL
BLOCKS
FLAME ROD SIGNAL
SUPPLY
AMPLIFIER
TERMINAL
FUSE
BLOCKS
BLOCKS
SIGNAL
AMPLIFIER
POWER
BREAKER
For INTERNATIONAL units,
Molex is plugged into 220 V
Transformer Harness
220 V Transformer
Harness
To 220 V
TRANSFORMER
POWER
BREAKER
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