Watts Benchmark Aerco OMM-0122 - 2.10.3 Electrical Power Box Internal Components

Benchmark 750-3000 Boiler Installation & Startup Manual
SECTION 2 – INSTALLATION
OMM-0121_D • GF-205 • 5/9/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 32 of 122
2.10.3 Electrical Power Box Internal Components
WARNING!
The power breaker shown in Figure 2-9a, 2-9b and 2-9c does NOT remove power from the
terminal blocks.
Figure 2-9a: BMK 750/1000 Power Box Internal Components
Figure 2-9b: BMK 1500/2000 Power Box Internal Components
12V POWER
SUPPLY
FUSE BLOCKS (2)
TERMINAL BLOCKS
POWER
BREAKER
TRANSFORMER
24V POWER
SUPPLY
WIRE CONDUITS
12V POWER
SUPPLY
FUSE BLOCKS (2)
TERMINAL BLOCKS
24 V POWER SUPPLY
(SEQUENCING VALVE)
FLAME ROD SIGNAL
AMPLIFIER
TRANSFORMER
115V/24V
POWER
BREAKER
FLAME ROD SIGNAL
AMPLIFIER