Air Conditioner User Manual

Page 13
XC21 SERIES
STEP 5 −− ELECTRICAL (Continued) −− Outdoor Control (A175) Jumpers and Terminals
55
50
DEGREE
TARGET
45
DEGREE
TARGET
40
DEGREE
TARGET (DEFAULT)
55
50
45
40
55
50
45
40
55
50
45
40
55
50
45
40
DEGREE
TARGET
100
90
DEGREE
TARGET
70
DEGREE
TARGET
50
DEGREE
TARGET
100
90
70
50
DEGREE
TARGET
100
90
70
50
100
90
70
50
100
90
70
50
30
0
30
SECOND DELAY
SECOND DELAY
0
Cut for Humiditrol
®
− Enhanced
Dehumification Accessory (EDA)
applications.
SECOND−STAGE LOCK−IN
TEMPERATURE
(HP ONLY) J4
J1 (HP ONLY)
J3 ALL UNITS)
DS TO R TWO−STAGE UNIT
ONLY)
(TWO−STAGE HEAT
PUMP ONLY) J2
DEFROST TERMINATION TEMPERATURE
COMPRESSOR SHIFT DELAY
FAN CYCLING
ON
OFF
JUMPER ON
FAN ON FOR 5 MINUTES
DISABLE (DEFAULT)
JUMPER OFF
(DEFAULT)
SEE NOTE ABOVE FOR FURTHER DETAILS.
100
90
70
50
(DEFAULT)
(DEFAULT WHEN JUMPER IS
REMOVED OR MISSING)
90
Non−Communicating System
The unit will operate based on jumper settings and R−TO− DS link on
the MAIN CONTROL. All unit setting changes must be done at the
MAIN CONTROL. The Lennox ComfortSense 7000 thermostat
may be used, as well as other non−communicating electronic−only
thermostats.
Communication System
The jumper settings and link are default settings and ONLY control
system operation if configuration settings in the icomfortt−enabled
thermostat are not available.
The Lennox icomfortt−enabled thermostat must be
used in communicating applications.
7−SEGMENT
DISPLAY
PUSH
BUTTON
Set up of jumpers on
replacement outdoor
control.
NOTE − LINK NOT APPLICABLE TO
ONE−STAGE UNITS. CUTTING LINK WILL
HAVE NO AFFECT ON OPERATION OF
ONE−STAGE UNITS
.
NOTE  Fan cycling routine when activated will cycle the
fan ON for five minutes if the outdoor ambient air
temperature is between 15ºF and 35ºF and the
compressor has been OFF for 25 to 30 minutes. This
option is to help reduce the potential for ice build up on the
orifice ring during system OFF cycles that are greater
than 25 to 30 minutes.
FIGURE 14