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Installer Setup
Dual Fuel (cont.)
Setup steps 61-63 will only appear if step 60 is set to ON.
Dual Fuel Changeover on Outdoor Temp (setup step 61) - ON: the change
from Heat Pump to a fossil fuel source of heat will be based on outdoor
temperature. (a local outdoor sensor is required for ‘ON’)
OFF: Heat Pump heating will be terminated when there is a demand for third
stage heat and a switch to fossil fuel will be made.
Dual Fuel Balance Point (setup step 62) - (0˚ - 60˚ ) Specifies the outdoor
temperature at which the heat pump will cease operating and a fossil fuel
source of heat is used.
Dual Fuel Changeover Delay (setup step 63) - (0 - 90) Specifies the number of
seconds the heat pump is allowed to continue running after a fossil fuel heat
source has been engaged.
Control to Temp Source (setup step 47)
This feature allows the user to specify which temperature sensor source the
thermostat will use to measure room temperature.
Thermostat: Uses the internal thermostat sensor only.
Remote Sensor: Uses wireless or wired sensors only.
Average Of Remote Sensor And Thermostat: Averages the temperatures of the
remote sensor(s) and the thermostat.
NOTE: If a remote sensor is being used, the degree icon on the large room
temperature display will blink.
Wireless Remote to Use (setup step 48)
Specifies the use of the connected, wired sensor. The choices are: Remote or
Supply. The remote option allows control to the sensor, the supply does not.
Fahrenheit or Celsius (setup step 65)
This feature allows the thermostat to display temperature in Fahrenheit or
Celsius.
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