Lennox icomfort Touch - Configuring heat strips on Air Handler Control (AHC)

506566−01 09/10
Page 36
Configuring heat strips on Air Handler Control (AHC)
IMPORTANT: After electric heat strips are installed, the Air
Handler Control (AHC) must be manually configured to detect
the number of electric heat sections. (SEE ALSO 506181−01
for complete configuration guide.)
To configure the heat strips so that they will be detected by the
thermostat:
 Power must be applied to the air handler but NOT to the
thermostat. Remove thermostat faceplate or remove
wires to thermostat at the air handler.
 On the air handler control (AHC), unit should be in idle
mode (decimal blinks at 1 Hertz0.5 second ON, 0.5
second OFF.
 Select field test modepress and hold the pushbutton
until solid –" appears; release button. Display will blink.
 Press the pushbutton and wait for the display LED to
show H" (capital H), then release the button.
 The AHC cycles the indoor blower motor "on" to the se-
lected heat speed and stages the electric heat relays on"
and off´ to automatically, detecting the number of electric
heat sections. The AHC stores the number of electric
heat sections, then automatically exits Field Test Mode".
 At this point, the icomfort Touch will now detect the heat
strip information stored in the AHC.
OUTDOOR
AIR SENSOR
HEAT
1234
COOL
1234
DELAY
12 34
ADJUST
NORM + −
HUMIDIFICATION
SMART
AUTO
EVENHEAT
1234
BLOWER
ONLY CFM
100
11 5
130
85
Y1−Y2 2−STAGE
COMPR R−O HEAT PUMP R−DS DEHUM
OR
C
W1
W2
G
Y2
Y1
C
R
DH
H
L
O
DS
W3
FUSE 3 AMP
XFMR 24V
24 VAC
COM
3
6
9
1
4
7
XFMR LINE
G
2
5
8
P8
L1
L2
L2 L1
INDOOR
BLOWER
POWER
EARTH
INDOOR BLOWER
SIGNAL
4
5
6
12 3
A92
INTEGRATED
CONTROL
OUTDOOR UNIT
LINK
I + I −
I + I −RC
I + I −
R
C
THERMOSTAT
HUMIDITROL
DH
DISCHARGE
AIR SENSOR
HARMONY
PUSHBUTTON LED