Programming
Outdoor Reset
1. Power off the display.
2. Press and HOLD the Mode button
until
1:EH
appears.
3. Turn the Scroll/Select dial to
6:OH
(Outdoor high Temperature).
4. Press and release the Scroll/Select
dial to enter this program step.
5. Turn the Scroll/Select dial to
desired High Outdoor Temperature.
6. Press and release the Scroll/Select
dial to save the setting.
Page 6
Outdoor Reset
Sensor Wiring
Install the Outdoor Sensor and connect to
terminals marked O/S, then go to the Installer
Parameters to program your Outdoor Reset.
Outdoor Reset is defaulted for high
temp boiler applications. To adjust
outdoor reset follow these steps.
Page 5 of 12
Outdoor Reset varies the control set point based on the
outdoor temperature. The reset function works as shown
in Figure ‘CH Outdoor Reset’. When the outdoor air
temperature reaches 6:OH “high outdoor temperature
set point”, the control point setting is adjusted to 17:cL
“low boiler temperature set point”. When the outdoor air
temperature reaches 7:OL “low outdoor temperature
set point” the control set point is adjusted to 16:cH “high
boiler temperature”.
CH Outdoor Reset
NOTE: 0 - 10VDC terminals may not be used for both outdoor reset
and 0 - 10VDC temperature set point simultaneously.
Operating condition
(Summer Mode)
Understanding
Outdoor Reset Adjustment
Programming Outdoor Reset
FT WALL MOUNTED AND FLOORSTANDING COMBI MODELS
