Innovation Water Heaters Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
OMM-0078_0L AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 65 of 206
GF-128 Phone: 800-526-0288 PRI: 11/25/2014
4.7 OVER-TEMPERATURE LIMIT SWITCHES
The unit contains both automatic and manual reset over-temperature limit switches, shown in
Figure 4-6. They can be accessed by opening the front panel door of the unit.
The manual reset switch is not adjustable and is permanently fixed at 190°F. This switch will shut
down and lock out the heater if the water temperature exceeds 190°F. Following an over-
temperature condition, it must be manually reset by pressing the RESET button before the heater
can be restarted. The automatic reset over-temperature switch is adjustable and allows the unit to
restart, once the temperature drops below its temperature setting. Set the automatic over-
temperature switch to the desired setting.
Figure 4-6. Over-Temperature Limit Switch Location
MANUAL RESET (NON-
ADJUSTABLE) OVER-
TEMPERATURE LIMIT
SWITCH
AUTOMATIC RESET
(ADJUSTABLE) OVER-
TEMPERATURE LIMIT
SWITCH
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