Lennox icomfort Touch - Page 42

506566−01 09/10
Page 42
Setting up typical systemsAIR HANDLER & HEAT PUMP UNITS
icomfort−enabled Air Handler & icomfort−enabled Heat Pump unit
An icomfort air handler (CBX32MV or CBX40UHV) with an
icomfort−enabled heat pump (XP17 or XP21 only) unit.
NOTE − IMPORTANT! Be sure to set up the air handler con-
trol for heat strips (if used) prior to powering up the system
and thermostat.
1. Configure air handler control (AHC) for auxiliary heat
strips if used.
2. WiringSee 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 HP (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. Select Balance Point Control and press edit. Use the
down arrow to select Enabled and press save. High and
Low Balance Points will appear in red.
7. Complete Balance Point Control by editing the High and
Low Balance Points. It is not necessary to change the de-
faults, but you must save each setting. The red settings
will go away after pressing save. Press the back button
to return to the adjust screen.
8. Use the arrows to select Air Handler from system devices
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 all CFM
settings are complete, press the back button. Address
any red settings as described in steps 6 and 7. Press next
step to advance to the tests tab.
9. Test the system operation and confirm the system is elec-
trically energized and operational. Particularly, test the
heat strips (when used) to ensure the auxiliary stages op-
erate as designed. Press done.
10. 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.
 High & low balance points are enabled and adjusted un-
der the installer section of the thermostat. In the equip-
ment tab select System 49W95" and press edit. Scroll
down to Balance Point Control" and press edit and se-
lect Enabled and then save.
 An outdoor temperature sensor is provided in an icomfort
enabled heat pump unit. To display the outdoor tempera-
ture 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.