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Heat Cycle Rate
Cycle rate determines the heating on/off time cycles and the level of proportional power required to
operate the heater. (To have the heater operate at full power all the time, select Cr 0 to disable heat
cycling.) The cycle rate is based on the type of heating system and the power load required to operate
the device. The higher the load (size of baseboard or radiant heater), the greater the heat generated.
Cr 0 is continuous operation (no cycling), with a variance of +/- 0.6 °F (+/-0.3 °C). The heating unit will
operate at full power and the arrow bar icon will appear full. This function is for users who do not want
their electric heating devices to turn on and off frequently.
Cr 1 is a 20-second cycle rate with proportional heating. This means the heating will be turned on
and off once every 20 seconds to provide a stable room temperature. This cycle rate allows a
proportion level of power to the heating device. This is indicated on the thermostat display by the
bar icon, which will be partially filled, indicating the amount of power going to the heater. This setting is
recommended for standard electric heating devices, without fans, and will provide the most
energy-efficient heating and a stable temperature.
Cr 2 is a 240-second span. This means the heating will be turned on and off once every 240 seconds.
This is the recommended setting for fan-assisted heaters and radiant ceilings.
Summary of Contents for HTM621
Page 4: ...Installation instructions 2...
Page 11: ...9 Programming...
