Lennox CBX40UHV Series Unit Information

Page 39
CBX40UHV
2. Configuring Unit Size Codes
Power−up − Unit Size Code (number or letter) displayed represents unit size code (air handler
model size and capacity). If three horizontal bars display, Air Handler Control (AHC) does not
recognize unit size code (air handler model size and capacity).
AHC in IDLE mode
(No heating, cooling or indoor fan
operation)
To enter Field Test
Mode; Push and
hold button next to
7−segment LED
display until dash
symbol appears,
release button.
Turn room thermostat to OFF
Push and hold button until the solid P
symbol is displayed on the 7−segment
LED, 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 7−segment
LED display.
Solid P starts
blinking on
7−Segment LED
Push and hold button to allow AHC to display
unit size code (letter or number) for each
different air handler model for three seconds.
When the correct unit sized code is displayed,
release button. Selected code will flash for 10
second period. During that period, hold push button
until code stops blinking. AHC will store code in
memory and will automatically exit Field Test Mode
and reset. (If then second period expires or push
button is held less than three seconds, control will
automatically exit Field Test Mode and go into
IDLE mode without storing unit size code. If this
happens, configuring function must be repeated).
Verify that the selected unit size code is correct
and stored in non−volatile memory by cycling
the 24 volt power to the AHC. (At 24 volt
power−up of the AHC, the 7−segment LED will
display a unit size code
. If three horizontal bars
display, board does not recognize unit size
code. Programming function must be
repeated)
Yes
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
−
−
−
_
_
P
P
−
−
−
Figure 34. Configuring Unit Size Codes

Lennox CBX40UHV Series Specifications

General

Brand	Lennox
Model	CBX40UHV Series
Category	Air Handlers
Language	English