506566−01 09/10
Page 40
Setting up typical systemsAIR HANDLER & AIR CONDITIONER
icomfort−enabled Air Handler & icomfort−enabled Air Conditioner
An icomfort−enabled air handler (CBX32MV or CBX40UHV)
with an icomfort−enabled air conditioner (XC17 or XC21 only).
NOTE − IMPORTANT! Be sure to configure the air handler
control so that heat strips (if used) information will be detected
by the icomfort thermostat. This must be done prior to power-
ing up the system and thermostat.
1. Configure air handler control (AHC) for auxiliary heat
strips if used.
2. WiringSee Communicating System Wiring dia-
gram on Page 34 and Optional Accessories Wiring
(Page 35) for any accessories being installed with the
system.
4−conductor thermostat wire from the icomfort Touch
thermostat to the air handler (R, i+, i−, C)
4−conductor thermostat wire from the air handler ter-
minal strip to the icomfort−enabled AC (R, i+, i−, C)
Wiring as required for accessories
3. DO NOT cut any option link on air handler control.
4. After the entire system is wired, power up the system; the
icomfort Touch thermostat will check the system for
installed communication devices.
5. On the thermostat, go past the add/remove non−commu-
nicating devices" to the adjust a device" screen. Select
the system 49W95 from the device list using the up/down
arrows and press the edit button.
6. Use the arrows to select Air Handler" from system de-
vices list; press edit. From this Air Handler screen you
will have access to the various airflow settings. Set the
system air volumes according the needs of the home.
When you change certain settings, the system will
prompt you to please view and save all red settings".
Use the arrows to select the red settings and press edit.
Either make changes or not, but press save either way.
The red settings will go away after pressing save. When
all CFM settings are complete, press the back button.
Press next step to advance to the tests tab.
7. Test the system operation and confirm the system is elec-
trically energized and operational. Particularly, test the
heat strips (when used) to insure the auxiliary stages op-
erate as designed. Press done.
8. Exit the installer setup mode by selecting the EXIT tab.
TIPS
If the thermostat System Setting" does not offer a choice
for emerg. heat" and or the electric heat will not function;
the electric heat has not been configured. Configure the
electric heat as described on Page 36, or for complete
detail, see the Air Handler installation instructions. Re-
configure the icomfort system by entering the installer
program and selecting the setup tab and following the
prompts.
An outdoor temperature sensor is provided in an icom-
fort−enabled air conditioning unit. To display the outdoor
temperature on the home screen of the thermostat, you
must turn on (or off) the Outdoor Temp Display". From
the Home screen, press press for more area and select
the HELP tab. Press the user preferences box and
scroll down to Outdoor Temp Display". Press the modify
button and use the up/down arrows to select On (or Off)
and then press the save button. Press done to return to
the Home screen.
Turn the Indoor Humidity Display on and off in a similar
manner as above.
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