18
24 V
OLT
T
HERMOSTAT
W
IRING
W
IRE
ROUTING
MUST
NOT
INTERFERE
WITH
CIRCULATOR
BLOWER
OPERATION
,
FILTER
REMOVAL
OR
ROUTINE
MAINTENANCE
.
A
REMOVABLE
PLUG
CONNECTOR
IS
PROVIDED
WITH
THE
CONTROL
TO
MAKE
THERMOSTAT
WIRE
CONNECTIONS
. T
HIS
PLUG
MAY
BE
REMOVED
,
WIRE
CONNECTIONS
MADE
TO
THE
PLUG
,
AND
REPLACED
. I
T
IS
RECOMMENDED
THAT
YOU
DO
NOT
CONNECT
MULTIPLE
WIRES
INTO
A
SINGLE
TERMINAL
. W
IRE
NUTS
ARE
RECOMMENDED
TO
ENSURE
ONE
18 AWG
WIRE
IS
USED
FOR
EACH
TERMINAL
. F
AILURE
TO
DO
SO
MAY
RESULT
IN
INTERMITTENT
OPERATION
.
STRONGLY
IMPORTANT NOTE
W
HEN
USING
A
NON
-
COMMUNICATING
THERMOSTAT
,
DIP
SWITCHES
S1-3
MUST
BE
SET
TO
MATCH
THE
THERMOSTAT
TYPE
. W
HEN
USING
A
2-
STAGE
THERMOSTAT
,
SET
S1-3
TO
ON. W
HEN
USING
A
SINGLE
STAGE
THERMOSTAT
,
SET
S1-3
TO
OFF. S1-4
SHOULD
BE
USED
ONLY
WHEN
A
SINGLE
STAGE
THERMOSTAT
IS
CONNECTED
. S
EE
S
INGLE
-
S
TAGE
H
EATING
T
HERMOSTAT
A
PPLICATION
SECTION
FOR
DETAILS
.
IMPORTANT NOTE
As a two-stage non-communicating furnace, the furnace inte-
grated control module provides terminals for both “W1” and “W2”,
and “Y1” and “Y2” thermostat connections. This allows the
furnace to support the following system applications: ‘Two-
Stage Heating Only’, ‘Two-Stage Heating with Single Stage Cool-
ing’, and ‘Two-Stage Heating with Two-Stage Cooling’. Refer to
the following figures for proper connections to the integrated
control module.
Low voltage connections can be made through either the right
or left side panel. Thermostat wiring entrance holes are located
in the blower compartment. The following figure shows con-
nections for a “heat/cool system”.
This furnace is equipped with a 40 VA transformer to facilitate
use with most cooling equipment. Consult the wiring diagram,
located on the blower compartment door, for further details of
115 Volt and 24 Volt wiring.
NOTE:
For single stage cooling applications, a jumper may be
located between Y1 and Y2 at the furnace control in order to
achieve the desired single stage cooling airflow. Use of ramp-
ing profiles and dehumidification features requires a jumper
between Y1 and O when the condensing unit is cooling only.
NOTE:
Thermostat “R” required if outdoor unit is equipped with
a Comfort Alert™ module or if the outdoor unit is a part of the
ComfortNet™ family of equipment AND is wired as a non-
communicating system.
R
Y
C
NEU
Furnace Integrated
Control Module
Remote
Condensing Unit
(Single-Stage Cooling)
Dehumidistat
[Optional]
R
NOTE:
To apply a single-stage Heating Thermostat, the thermostat
selector switch on the Integrated Control Module
must
be set on
single-stage.
Thermostat - Single -Stage Heating with Single-Stage
Cooling
_______________________
R
Y
C
Furnace Integrated
Control Module
Remote
Condensing Unit
(Single-Stage Cooling)
Dehumidistat
[Optional]
NEU
R
Thermostat - Two-Stage Heating with Single-Stage Cooling
_______________________
W1
W2
Y2
Furnace Integrated
Control Module
Remote
Condensing Unit
(Two-Stage Cooling)
Dehumidistat
[Optional]
Y2
NEU
W1
W2
Y2
Thermostat - Two-Stage Heating with Two-Stage Cooling
Thermostat Wiring Diagrams
S
INGLE
-S
TAGE
H
EATING
T
HERMOSTAT
A
PPLICATION
A single-stage thermostat with only one heating stage may
be used to control this furnace. The application of a single-
stage thermostat offers a
timed
transition from low to high
fire. The furnace will run on low stage for a fixed period of time
before stepping up to high stage to satisfy the thermostat’s
call for heat. The delay period prior to stepping up can be set
at either a fixed 5 minute time delay or a load based variable
time between 1 and 12 minutes (AUTO mode). If the AUTO
mode is selected, the control averages the cycle times of the
previous three cycles and uses the average to determine the
time to transition from low stage to high stage.
Содержание DC80VC
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