INITIAL START-UP
4-9
4.6 OVER-TEMPERATURE LIMIT
SWITCHES
The unit contains both automatic and manual
reset over-temperature limit switches. These
switches are mounted on a plate as shown in
Figure 4-5. The switches can be accessed by
opening the front panel door of the unit. The
manual reset switch is not adjustable and is
permanently fixed at 210°F. This switch will shut
down and lock out the boiler if the water
temperature exceeds 210°F. Following an over-
temperature condition, it must be manually reset
by pressing the RESET button before the boiler
can be restarted. The automatic reset over-
temperature switch is adjustable and allows the
boiler to restart, once the temperature drops
below its temperature setting. Set the automatic
over-temperature switch to the desired setting.
Figure 4-5
Over Temperature Limit Switch
Locations
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