4343
ctk04 addendum
two-wIre outdoor, four-wIre Indoor wIrIng
Low voltage wiring consists of two wires between the indoor
unit and heat pump 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)
<In case of Air Handler>
CTK04
Thermostat
CT™ Compable
Air Handler Blower Integrated
Control Module
CT™ Compable Heat Pump Integrated
Control Module
(*) Allowable Maximum Length
125 .(*)
250 .(*)
1 2 R C
1 2 R C
1 2 R C
System Wiring
<In case of Cased Coil>
CTK04
Thermostat
CT™ Compable
Gas Furnace or
Modular Blower
Integrated Control Module
CT™ Compable Heat Pump
Integrated Control Module
(*) Allowable Maximum Length
(a)+(b)
=125 .(*)
250 .(*)
(a)
(b)
1 2 R C
1 2 R C
1 2 R C
1 2 R C
CT™ Compable
Cased Coil
Integrated
Control Module
System Wiring
ATTENTION INSTALLER -
IMPORTANT NOTICE!
Please read carefully before installing this unit.
• For DZ17VSA, 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
Heat Pump, as they are not needed for inverter unit.
• Data line terminal #1 from heat pump must connect to
terminal #1 on indoor unit and thermostat and data line
terminal #2 from heat pump must connect to terminal
#2 on indoor unit and thermostat. Verify wires are not
reversed.