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PAGE 19
BIASI B/40
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1. On/Off Switch — Turns power to control panel on and off and will disable power to the burner
assuming the panel is wired correctly.
2. Minimum Boiler Temperature Thermostat — Maintains a minimum boiler temperature be-
tween 50 degrees F and 170 degrees F.
3. Maximum Boiler Temperature Thermostat — High limit temperature setting for boiler be-
tween 50 degrees F and 205 degrees F.
4. Thermostat Test Button — This button jumps out both thermostats allowing a technician to eas-
ily start the burner for testing if there is no call for heat. Warning, with both thermostats disabled
the only high limit left will be the manual high limit.
5. Circulator Switch - Supplies power to boiler circulator or relay panel. It is not suggested to use
this switch and it is not utilized in any of the suggested wiring diagrams in this manual.
6. Boiler On/Off Signal Lamp — Signal lamp to indicate whether main power switch is turned on
or off.
7. Temperature Gauge - Temperature gauge which takes temperature reading from top front of
boiler.
8. Manual Reset High Limit - Safety high limit that is set to 214 degrees F. If the manual high
limit is tripped, use a flat head screw driver to protective cap on reset button. Then depress reset
button making sure that it stays depressed once you have removed your finger. Once the switch is
reset replace the protective cover.
9. Burner Lock Out Signal Lamp - Lamp to indicate if the burner has gone out on lockout.
CONTROL PANEL DESCRIPTION