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icomfort Wi-Fit 7−Day Programmable Communicating Thermostat
Page 71
icomfortt−enabled Air Handler & conventional non−communicating Heat Pump unit
An icomfort air handler (CBX32MV or CBX40UHV) with a conventional non−
communicating heat pump unit.
NOTE − IMPORTANT! Be sure to set up the air handler control 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. WiringĊsee Communicating System Wiring diagram on Page 59
and Optional Accessories Wiring (Page 61) for any accessories be-
ing installed with the system.
D 4−conductor thermostat wire from the icomfort Wi-Fit thermostat
to the air handler (R, i+, i−, C)
D Conventional thermostat wire with 5 to 6 conductors from icom-
fort air handler to conventional HP (5 – 8 wires). (Y1, C, R, W1, O,
and on some models Y2)
D Wiring as required for accessories
3. On air handler control, with 2−stage HP cut the W915 2 Stage Compr"
onboard clippable link. Cut W951 between W1 & W2 for two−stage
electric heat only.
4. After the entire system is wired, power up the system; the icomfort Wi-
Fit thermostat will check the system for installed communication de-
vices.
5. In the installer setup button, select Add or Remove non−communicat-
ing equipment by using the yes button.
6. Select the Outdoor Unit Type" from the device list using the up/down
arrows and press the edit button. Then select the heat pump type
(1−stage HP or 2−stage HP) and press the save button.
7. On the thermostat, go past the Add or remove non−communicating de-
vices" to the To adjust a setting" screen. Select the System" from the
device list using the up/down arrows and press the edit button.
8. Select Balance Point Control (if outdoor sensor is installed) and press
edit. Use the down arrow to select Enabled" and press save. High and
Low Balance Points will appear in red.
9. Complete Balance Point Control by editing the High and Low Balance
Points. It is not necessary to change the defaults, 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.
10. 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 8 and 9. Press next
step to advance to the tests button.
11. Test the system operation and confirm the system is electrically ener-
gized and operational. Particularly, test the heat strips (when used) to
insure the auxiliary stages operate as designed. Press done.
12. Exit the installer setup mode by selecting the EXIT button.
TIPS
S 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 64,
or for complete detail, see the Air Handler installation instructions. Re-
configure the icomfort system by entering the installer program and se-
lecting the setup button and following the prompts.
S High & low balance points are enabled and adjusted under the installer
section of the thermostat. In the equipment button select System" and
press edit. Scroll down to Balance Point Control" and press edit and
select Enabled and then save.
S If an optional outdoor temperature sensor has been installed, you may
display the outdoor temperature on the home screen of the thermostat.
To turn on (or off) the Outdoor Temp Display". From the Home screen,
press press for more area and select the HELP icon. 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.