Installing Thermostat - ComfortNET CTK02AA Installation Manual

Installing Thermostat

Remove and Inventory All
ComfortNet Components
™
Two Ways to Connect to the Outdoor Unit
METHOD ONE: 4-WIRE CONNECTION
Carefully separate the thermostat body from the thermostat base.
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Place base at installation location and mark mounting hole locations on wall using base as a template.
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Drill mounting holes.
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Attach base snugly to wall using two mounting screws. Levelling is for appearance only and will not affect
■
thermostat operation.
Connect wires to terminal block on base.
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18 AWG solid wire is recommended.
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Push excess wire into wall and plug hole with a fire resistant material (such as fiberglass insulation) to prevent drafts
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from affecting thermostat operation.
Carefully line up the thermostat with the base and snap into place.
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ComfortNet HiDef Control System
Install HVAC Components
Air
Gas
Handler Furnace
Air Conditioner
Air Conditioner
or Heat Pump or Heat Pump
Two Ways to Connect to the Outdoor Unit
METHOD TWO: 2-WIRE/TRANSFORMER CONNECTION
Connect 4-Wire
Indoor Unit
Terminals 1 & 2 are communications wires.
They should never be connected to the 24 VAC
R&C power supply terminals.
Remove 9-Pin Connector
from Furnace or
Air Handler Control
Connect 4-Wires
from Stat and 2 or
4 Wires from Outdoor Unit
P/N F0430679005
Terminals 1 & 2 are
communications wires.
They should never be
connected to the 24 VAC
R&C power supply
Install Thermostat on Interior Wall
NOTE: Thermostat
will automatically
Connect 2-Wires
to Indoor Unit configure to the
system once high
voltage power is
applied to the indoor
and outdoor equipment.
High
Low (24 VAC)
Voltage
Voltage
Transformer
Low Voltage
Connected to
R and C Terminals
Optional transformer
(P/N B1141643)
Connect High Voltage Transformer Leads to
L1 and L2 Male Spade Terminals on
Circuit Board.
Remove Outdoor Unit Cover
and 7-Pin Connector
terminals.
Installation Guide / 5