AERCO Boiler Valve Controller (BVC) PRIOR to Serial-12-840-1 - Manual (Page 25)

INSTALLATION
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2.4.5 Fuses and On/Off Switch
The AERCO Boiler Valve controller uses two standard Buss cylindrical fuses (see SECTION 4),
each rated at 2 Amperes. These fuses are found at the extreme right of the upper electronics
module set. Their holders are labeled FS1 and FS2. See Figure 10 below. Tabs at the bottom of
the fuse housing unit’s top plates can be snapped up to expose the fuse holders. Make sure the
fuses are in place and are of good electrical integrity (i.e., “not blown”).
A single pole – single throw On/Off circuit breaker is found at the left side of the upper
electronics module set. See Figure 10 below. Make sure this switch is in the “ON” position.
Figure 12 - ON/OFF Circuit Breaker and Fuses