Iring; Pplication - Goodman GMVC950704CX Installation Instructions Manual

E C
LECTRICAL ONNECTIONS
1. Measure resistance between the neutral (white) connection
and one of the burners.
2. Resistance should measure 10 ohms or less.
This furnace is equipped with a blower door interlock switch which
interrupts unit voltage when the blower door is opened for servicing.
Do not defeat this switch.
24 V T W
OLT HERMOSTAT

IRING

IMPORTANT NOTE
W
IRE ROUTING MUST NOT INTERFERE
,
OPERATION FILTER REMOVAL
A
REMOVABLE PLUG CONNECTOR
MAKE THERMOSTAT WIRE CONNECTIONS
WIRE CONNECTIONS MADE TO
STRONGLY
RECOMMENDED
TERMINAL BE TWISTED TOGETHER
. F
CONNECTOR AILURE TO DO SO
.
OPERATION
As a two-stage non-communicating furnace, the furnace integrated
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 Cooling', and 'Two-
Stage Heating with Two-Stage Cooling'. Refer to the following fig-
ures 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 connections 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
required between Y1 and Y2 at the furnace control in order to
achieve the desired single stage cooling airflow. Consult the
blower performance tables to determine if the required single
stage cooling airflow can be delivered at low stage (Y1 input) or
high stage (Y2 input). Additionally, use of ramping profile and
dehumidification features require a jumper between Y1 and O
and Y1 and DEHUM, respectively.
NOTE: Thermostat "R" required if outdoor unit is equipped with a
Comfort Alert™ module or if the out door unit is a part of the
ComfortNet family of equipment AND is wired as a legacy
system.
WITH CIRCULATOR BLOWER
.
OR ROUTINE MAINTENANCE
IS PROVIDED WITH THE CONTROL
. T
HIS PLUG MAY BE REMOVED
, . I
THE PLUG AND REPLACED T IS
THAT MULTIPLE WIRES INTO A SINGLE
PRIOR TO INSERTING INTO THE
MAY RESULT IN INTERMITTENT
Place Jumper Between Y1
and O For Proper
Dehumidification Operation
and Proper Ramping
Profile Operation
TO
,
PLUG
Place Jumper Between Y1
and O For Proper
Dehumidification Operation
and Proper Ramping
Profile Operation
Place Jumper Between Y1
and O For Proper
Dehumidification Operation
and Proper Ramping
Profile Operation
S -S
INGLE TAGE
A single-stage thermostat with only one heating stage may be
used to control this furnace. The application of a single-stage
thermostat does not offer "true" thermostat-driven two-stage opera-
tion, but provides a timed transition from low to high fire. The
furnace will run on low stage for a fixed period of time before step-
ping up to high stage to satisfy the thermostat's call for heat. The
28
Single Stage Heating with
Single Stage Cooling
Y
R
R
NEU
Dehumidistat
Y C
Remote
Condensing Unit
(Single-Stage Cooling)
Single Stage Heating with Single Stage Cooling
NOTE: To apply a single-stage Heating Thermostat,
the thermostat selector switch on the
Integrated Control Module must
single-stage.
Single-Stage Cooling
Y
R
R
NEU
Y C
Remote
Condensing Unit
(Single-Stage Cooling)
Two-Stage Heating with Single-Stage Cooling
(
W2
Y2
W1
Y2 W1 W2
NEU
Y2
Remote
Condensing Unit
(Two-Stage Cooling)
Two-Stage Heating with Two-Stage Cooling
Thermostat Wiring Diagrams
T A
HERMOSTAT

PPLICATION

Thermostat
Furnace Integrated
Control Module
[Optional]
be set on
Thermostat
Two-Stage Heating
with
Furnace Integrated
Control Module
Dehumidistat
[Optional]
)
Thermostat
Two-Stage Heating
with
Two-Stage Cooling
Furnace Integrated
Control Module
Dehumidistat
[Optional]