Service Manual

5
GENERAL INFORMATION
Surface Mounted Thermostats
Surface mounted thermostats are mounted into a bracket which holds the thermostat against the side of the tank.
Surface mounted thermostats respond to tank surface temperatures to sense a call for heat, set point temperature
settings and high limit (ECO) activation. It is important that the entire back surface of the thermostat is in full contact or
flush with the tank. Improperly mounted thermostat will lead to improper water heater operation.
Manual
ECO (high limit)
Reset button
Temperature
control Dial
Temperature
control Dial
Surface Mount
Combination Thermostat/
ECO (high limit)
59T/66T Series
Surface Mount
Combination Thermostat/
ECO (high limit)
59T/66T Series
Surface Mount
Thermostat
59T Series
Direct Immersion “Screw-in” Type Heating Element
1-½ Hex
Screw-in Flange
Terminal Block
Zinc Plated Copper or
Incoloy Sheath
Terminal Block
Screw
Element Rating Ink Stamped
on side of Terminal Block.
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