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11
EnglishEnglish
MODEL NAME
Phase
and fre-
quency
Voltage
MCA
(Min.
circuit
amp.)
MOP
(Max.
overcur-
rent
protective
device)
Transmis-
sion line
selection
DX17VSS421AA
1 Phase
60Hz
208/230V
34.0 A
35 A
18 AWG
(typical)
DX17VSS481AA
34.0 A
35 A
DX17VSS601AA
35.5 A
40 A
l
oW
v
oltage
c
onnectIonS
The unit is designed to work as part of a fully communicating
HVAC system, utilizing a ComfortNet™ thermostat, Comfort-
Net compatible indoor unit, and up to four wires. Route control
wires through the low voltage port and terminate in accor-
dance with the wiring diagram provided inside the top plate.
Tie high voltage wire and
ground wire with clamp
material (accessory)
GROUND
WIRE
HIGH
VOLTAGE
WIRE
LOW
VOLTAGE
WIRE
SHIELDING PLATE
VINYL TUBE
(accessory)
voltage Ports
note:
The communicating thermostat is able to search and
identify the indoor and outdoor units when power is applied to
the system. Refer to the communicating thermostat’s instal-
lation instruction manual for more information.
Connect low voltage communication wires (1, 2) to low volt-
age pigtail provided.
c
ommunIcatIon
W
IrIng
note:
A removable plug connector is provided with the
control board to make thermostat wire connections. This plug
may be removed, wire connections made to the plug, and
replaced. Do not connect multiple wires into a single terminal.
Typical 18 AWG wire may be used to wire the system compo-
nents. However, communications reliability may be improved
by using a high quality, shielded, twisted pair cable for the
data transmission lines.
t
Wo
-W
Ire
o
utdoor
, f
our
-W
Ire
I
ndoor
W
IrIng
Low voltage wiring consists of two wires between the indoor
unit and air conditioner and four wires between the indoor
unit and thermostat. The required wires are data lines 1 and
2, “R” (24 VAC hot) and “C” (24 VAC common).
Never connect the power wiring to communication terminal.
(1, 2, R, C)
CTK04
Thermostat
CT™ Compa
ti
ble
Gas Furnace or
Modular Blower
Integrated Control Module
CT™ Compa
ti
ble AC
Integrated Control Module
(*) Allowable Maximum Length
(a)+(b)
=125 ft.(*)
250 ft.(*)
(a)
(b)
1 2 R C
1 2 R C
1 2 R C
1 2 R C
CT™ Compa
ti
ble
Case Coil
Integrated
Control Module
System Wiring (in case of ctK04)
Attention inStAller -
iMPortAnt notice!
Please read carefully before installing this unit.
•
For DX17VSS, do NOT install the 24 Volt Transformer
that is included with the
ctK04
Thermostat.
•
Do not attach any wires to the R & C Terminals on the
Air Conditioner, as they are not needed for inverter
unit.
•
Data line terminal #1 from air conditioner must connect
to terminal #1 on indoor unit and thermostat and data
line terminal #2 from air conditioner must connect to
terminal #2 on indoor unit and thermostat.
Verify wires
are not reversed.