DCN: 140-02121-02 Page 4
SYSTEM Menu
The SYSTEM menu is used to setup the thermostat for the correct HVAC system type.
Settings:
HVAC System Type: Standard Gas/Electric or Heat Pump
Fan Type: Gas Heating or Electric Heating
Changeover Valve Type (for Heat Pump Systems): Changeover with Cooling or with
Heating.
When SYSTEM is selected in the Menu options, the following setup options will be
displayed in the text line.
Use the UP/Down arrow buttons to scroll to the desired setting.
Press “Select” to change a setting. The current setting for that selection will be
flashing.
Change the selection with the Up/Down arrows.
When the desired setting has been selected, Press “Select” again to save it.
Then press “Done” to exit.
HVAC System Setup Settings
HVAC System Type (SYSTYPE):
For Standard Gas/Electric systems, select “S”. This is the default setting.
For Heat Pump systems, use the Up/Dn arrows to change to “HP”
Fan Type (FANTYPE): For Standard HVAC systems only.
Fan type depends on the heating system type.
For Gas (g) heat, select “g”. This is the default setting.
For Electric (E) heat : use the Up/Dn arrows to change to “E”.
For HP systems the fan type is automatically selected, this selection is not used.
Changeover Valve Type (CO):. For Heat Pump HVAC systems only.
The changeover (or reversing) valve is used to change from heating to cooling operation. It
is either a changeover with cooling type or changeover with heating type. Most are
changeover with cooling, which is the default setting.
For Changeover with Cooling (C) systems, select “C”. This is the default setting.
For Changeover with Heating (H) systems, use the Up/Dn arrows to change to “H”.
Not sure what type Changeover system? Check the existing thermostat connections to
help determine this. If the original system had an orange wire connected to an “O”
terminal, then this is a “changeover with cool” system. If there was a brown wire
connected to a “B” terminal, then this is a “change over with heat” system. Set the CO
setting accordingly.
Note: If heating comes on when cooling is expected and vice versa, change the
“CO” type to the opposite setting.
Advanced System Settings Menu
The Advanced System Settings Menu provides for addition system setup options.
These settings can affect system operation and should only be changed by qualified HVAC
installers.
The Advanced System Settings menu is accessed by holding down the “Done” (FAN)
button for 5 seconds WHILE IN THE SYSTEM MENU. When the Advance System
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