9
For example, assume the system is an air conditioner matched
with an air handler. With a call for low stage cooling, the air
conditioner will calculate the system’s low stage cooling air-
flow demand. The air conditioner will then send a fan request
along with the low stage cooling airflow demand to the air
handler. Once received, the air handler will send the low stage
cooling airflow demand to the ECM motor. The ECM motor
then delivers the low stage cooling airflow. The table below
lists the nominal high and low stage airflow for the ComfortNet
air conditioners.
M ode l
High
Low
*SXC160241
800
600
*SXC160361
1200
800
*SXC160481
1550
1100
*SXC160601
1800
1400
*SXC180361
1250
850
*SXC180481
1750
1210
*SXC180601
1750
1210
CTK0* W
IRING
NOTE:
Refer to
Electrical Connections - High Voltage
Connections
for 208/230 volt line connections to the air
conditioner.
NOTE:
A removable plug connector is provided with the control
to make thermostat wire connections. This plug may be
removed, wire connections made to the plug, and replaced. It
is strongly recommended that multiple wires into a single
terminal be twisted together prior to inserting into the plug
connector. Failure to do so may result in intermittent operation.
Typical 18 AWG thermostat wire may be used to wire the sys-
tem components. However, communications reliability may
be improved by using a high quality, shielded, twisted pair cable
for the data transmission lines. In either case, 100 feet is the
maximum length of wire between indoor unit and outdoor unit,
or between indoor unit and thermostat.
F
OUR
-W
IRE
I
NDOOR
AND
O
UTDOOR
W
IRING
Typical wiring will consist of four wires between the indoor unit
and outdoor unit and between the indoor unit and thermostat.
The required wires are: (a) data lines, 1 and 2; (b) thermostat
“R” (24 VAC hot) and “C” (24 VAC common).
1
2
R
C
1
2
R
C
CTK0*
Thermostat
CT Compatible
Air Handler/Furnace/Modular Blower
Integrated Control Module
CT Compatible AC/HP
Integrated Control Module
1
2
R
C
System Wiring Using Four-Wires
T
WO
-W
IRE
O
UTDOOR
, F
OUR
-W
IRE
I
NDOOR
W
IRING
Two wires only may be utilized between the indoor and outdoor
units. For this wiring scheme, only the data lines, 1 and 2, are
required between the indoor and outdoor units. A 40 VA, 208/
230 VAC to 24 VAC transformer must be installed in the out-
door unit to provide 24 VAC power to the outdoor unit’s elec-
tronic control. The transformer is included with the CTK0* kit.
See kit instructions for mounting and wiring instructions. Four
wires are required between the indoor unit and thermostat.
NOTE:
Use of the CTK0* transformer is recommended if
installing a dual fuel system. Failure to use the transformer in
the outdoor unit could result in over loading of the furnace
transformer.
1
2
R
C
1
2
R
C
CTK0*
Thermostat
CT Compatible Air
Handler/Furnace/Modular
Blower Integrated
Control Module
CT Compatible
AC/HP Integrated
Control Module
40VA Transformer (included in
CTK0* kit)
208/230 VAC
24 VAC
1
2
R
C
System Wiring using Two-Wires between Furnace and AC/HP
and Four-Wires between Furnace and Thermostat
C
OMFORT
N
ET
™ S
YSTEM
A
DVANCED
F
EATURES
The ComfortNet system permits access to additional system
information, advanced setup features, and advanced diagnos-
tic/troubleshooting features. These advanced features are or-
ganized into a menu structure. The menus are accessed and
navigated as described below.
A
CCESSING
AND
N
AVIGATING
THE
A
DVANCED
F
EATURES
M
ENUS
The advanced system features are accessed using the
ComfortNet thermostat. These advanced features are accessed
as follows:
•
On the CT thermostat Home Screen Display, touch
the
Menu
key to display additional key choices.
•
Touch and hold the
Installer Config
key for
approximately three seconds to enter the Thermostat
Options Configuration menu.
•
Touch and hold the
Installer Config
key again for
approximately three seconds to enter the Advanced
Installer Configuration menu.
Содержание CONDENSING UNITAIR CONDITIONING
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