Over-Temperature Limit Switches - Watts Aerco Innovation 800 User Manual

Innovation Hot Water Hot Water Boiler User Manual

4.6 OVER-TEMPERATURE LIMIT SWITCHES

The unit contains both Automatic Reset 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 Over-Temperature Limit switch is not adjustable and is permanently fixed at
190°F (87.7°C). This switch will shut down and lock out the heater if the water temperature
exceeds 190°F (87.7°C). 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 Limit switch is adjustable and allows the unit to
restart, once the temperature drops below its temperature setting. Set the Automatic Reset
Over-Temperature Limit switch to the desired setting.
AUTOMATIC RESET
OVER-TEMPERATURE
LIMIT SWITCH
(ADJUSTABLE)
Figure 4-6. Over-Temperature Limit Switch Location
OMM-0120_0A
GF-128-I
CHAPTER 4 – INITIAL START-UP
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
- INTERNATIONAL
MANUAL RESET
OVER-TEMPERATURE
LIMIT SWITCH
(NON-ADJUSTABLE)
Page 59 of 174
11/15/2016