Lennox CBX40UHV Series Unit Information page 15

I−AIR HANDLER CONTROL BUTTON, DISPLAY AND
JUMPERS
Use figure 10 as reference for jumper settings. If any of the
reference jumpers are missing, the Air Handler Control will
display Error Code 130 as per table 14, and the Air Handler
Control will automatically use the factory default setting
show in figure 11)
IMPORTANT
Before changing any clippable links or jumper settings,
make sure the motor has completely stopped. Any
changes will not take place while the motor is running.
PUSH BUTTON
An on−board push button is provided for the purpose of
placing the Air Handler Control in different operation modes
and can be used to recall stored error codes. When button
is pushed and held, Air Handler Control will cycle through a
menu of options depending on current operating mode.
Every three seconds a new menu item will be displayed. If
the button is released while that item is shown on the
display, Air Handler Control will enter displayed operating
mode, or execute defined operation sequence for that
menu option. Once all items on menu have been displayed
the menu resumes from the beginning (if button is still held).
DELAY
Indoor Blower Cooling Profile, Delay for Cooling and heat
pump operations are selected by placing the jumper in
appropriate position on five−pin header (four position
options).
S
When operating a heat pump, only delay profiles 1 and
2B are applicable.
S
When operating a heat pump, and profiles 3 and 4 are
selected, the AHC will default to profile 1.
If the jumper is missing the AHC will activate the
Configuration Jumper
automatically use the default factory setting. See figure 11
for jumper configurations.
A. When cool or heat demand is initiated, motor
ramps up to 100% and runs at 100% until demand
is satisfied.
B. Once demand is met, motor ramps down to stop.
100
%CF
A
OFF
M
COOLING
DEMAND
Delay Profile 2
Cooling Air Conditioner and Heat Pump:
100% CFM
A
OFF
COOL-
ING
DEMAND
A. When cool demand is initiated, motor ramps up to
100% and runs at 100% until demand is satisfied.
CBX40UHV
is Missing alarm and
B
OFF
B C
100% CFM
45 SEC.
B. Once demand is met, motor runs at 100% for 45
seconds.
C. Motor ramps down to stop.
Heating
A B
OFF
30 sec
delay
HEATING DEMAND
A. When heat demand is initiated, 30 seconds motor
on delay starts
B. After the motor on delays expires, motor ramps up
to 100% and runs at 100% until demand is
satisfied.
C. Once demand is met, motor runs at 100% for 45
seconds.
D. Motor ramps down to stop.
B
A
OFF
A. When cool demand is initiated, motor ramps up to
82%
B. Motor runs at 82% for approximately 7.5 minutes
and then ramp up to 100% (unless the demand has
been satisfied) and motor runs at 100% until
demand is satisfied.
will
C. Once demand is met, motor ramps down to stop
C
B
OFF
A
1/2 MIN
50% CFM
A. When cool demand is initiated, motor ramps up to
50%
B. Motor runs at 50% for 30 seconds and ramps up to
82%
C. Motor runs at 82% for approximately 7.5 minutes
and then ramp up to 100% (unless the demand has
OFF
been satisfied) and motor runs at 100% until
demand is satisfied.
D. Once demand is met, motor runs at 50% for 30
seconds.
E. Motor ramps down to stop
Page 15
Heat Pump only:
C
100% CFM
100% CFM
45 SEC.
Delay Profile 3
7 1/2 MIN
100% CFM
82%CFM
COOLING DEMAND
Delay Profile 4
7 1/2 MIN 100%
82% CFM CFM
COOLING DEMAND
D
OFF
C
OFF
D E
OFF
1/2 MIN
50% CFM