Lennox 16B27 User Manual

Page 20
unit size code
Conguring Unit Size Codes (Model Number)
Power-up — Unit Size Code (number or letter) displayed represents unit size code (air handler model size and capacity).
If three horizontal bars display, then Air Handler Control (AHC) does not recognize unit size code.
AHC in IDLE mode
(No heating, cooling or indoor fan operation)
To enter unit size code
conguration mode ; PUSH and
HOLD button next to single
character LED display until dash
symbol appears, RELEASE button.
Turn room thermostat to
OFF. If connected to iComfort control
PUSH and HOLD button until the solid P
symbol is displayed on the single
character LED display, then RELEASE
button. This mode allows the user to
select a unit size code (number or letter)
that matches the air handler model size
and capacity.
Solid dash starts blinking
on single character LED
display.
Solid P starts
blinking on single
character LED
display.
PUSH and HOLD button to allow AHC to display unit size
code
(letter or number) for each dierent air handler model
for three seconds.
Ye s
No
IMPORTANT — Field replacement controls may need to be
manually configured to validate air handler unit size code.
AIR HANDLER MODEL
CBX32MV-018/024
CBX32MV-024/030
CBX32MV-036
CBX32MV-048
CBX32MV-060
CBX32MV-068
CBX40UHV-024
CBX40UHV-030
CBX40UHV-036
CBX40UHV-042
CBX40UHV-048
CBX40UHV-060
UNIT SIZE CODE
0
1
2
3
4
5
6
7
8
9
L
U
1. When the correct Unit Size Code is displayed, RELEASE
push button. Selected code will ash for 10 second period.
2. During that 10 second period, HOLD push button until code
stops blinking (three seconds minimum).
3. Air Handler Control will store code in memory and exit current
active mode. LED display will go blank and then the Unit Size
Code will display for 2 to 5 seconds.
NOTE - If 10 second period expires, or push button is held less than
three seconds, control will automatically exit current active mode
and go into IDLE Mode without storing unit size code. If this occurs,
then Unit Size Code conguring procedure must be repeated.
LED displays correct
Unit Size Code .
Unit enters IDLE
Mode .
YES
NO
CBA38MV-018/024
A
CBA38MV-030
C
CBA38MV-036
E
CBA38MV-042
F
CBA38MV-060
Y
CBA38MV-048
H
system, remove R, i+, i- and C wired from the control board.
Figure 7. Congure Unit Size Codes

Lennox 16B27 Specifications

General

Brand	Lennox
Model	16B27
Category	Heat Pump
Language	English