Volt Thermostat Wiring; Ingle Tage Hermostat Pplication; Olt Ehumidistat Iring - Goodman GMV9 Installation & Operating Instructions Manual

T
O AVOID THE RISK OF INJURY, ELECTRICAL SHOCK OR DEATH, THE FURNACE
MUST BE ELECTRICALLY GROUNDED IN ACCORDANCE WITH LOCAL CODES OR,
IN THEIR ABSENCE, WITH THE LATEST EDITION OF THE
C
ODE.
To ensure proper unit grounding, the ground wire should run from
the furnace ground screw located inside the furnace junction box all
the way back to the electrical panel. NOTE: Do not use gas piping
as an electrical ground. To confirm proper unit grounding, turn off
the electrical power and perform the following check.
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
NOTE: Wire routing must not interfere with circulator blower operation,
filter removal, or routine maintenance.
As a two-stage furnace, the furnace integrated control module pro-
vides terminals for both "W1" and "W2", and "YLO" and "Y" thermo-
stat 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 figures and table for proper connec-
tions 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. Wire routing must not interfere with circulator blower
operation, filter removal, or routine maintenance.
Y
O YLO Y B/C
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 jumper on the integrated Control
module must be set on single stage.
Y
O YLO Y B/C
Y C
Remote
Condensing Unit
(Single-Stage Cooling)
Two-Stage Heating with Single-Stage Cooling
IO-243
WARNING
N
ATIONAL
IRING
( )
Thermostat
Single-Stage Heating with
Single-Stage Cooling
W
G R
Furnace Integrated
G R W1 W2
DEHUM
Control Module
TWIN
NEU
Dehumidistat
HOT
[Optional]
W2
Thermostat
( )
Two-Stage Heating
with
Single-Stage Cooling
W1
G R
Furnace Integrated
G R W1 W2 DEHUM
Control Module
TWIN
NEU
Dehumidistat
HOT
[Optional]
E
LECTRIC
O
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.
S -S
INGLE TAGE
A single-stage thermostat with only one heating stage can be used
to control this furnace. The application of a single-stage thermostat
does not offer "true" thermostat-driven two-stage operation, but pro-
vides 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 5 or 10 minutes through the DIP
switch adjacent to the Heat Off delay DIP switches on the integrated
control module. To use a single-stage thermostat, turn off power to
the furnace, move the thermostat selection jumper on the integrated
control module from the "two-stage" position to the "single-stage"
position, turn power back on. Refer to the following figures.
T
W
TSTAT
O
S
I
N
G
L
E
24 V D
OLT EHUMIDISTAT
The optional usage of a dehumidistat allows the furnace's circulator
blower to operate at a slightly lower speed during a combined ther-
mostat call for cooling and dehumidistat call for dehumidification.
This lower blower speed enhances dehumidification of the condi-
tioned air as it passes through the AC coil. For proper function, a
dehumidistat applied to this furnace must operate on 24 VAC and
utilize a switch which opens on humidity rise.
To install/connect a dehumidistat:
1. Turn OFF power to furnace.
2. Secure the dehumidistat neutral wire (typically the white lead)
to the screw terminal marked "DEHUM" on the furnace
integrated control module.
3. Secure the dehumidistat hot wire (typically the black lead) to
the screw terminal marked "R" on the furnace integrated
control module.
22
W2
YLO
W1
Y
G R
YLO Y B/C G R W1 W2
NEU
HOT
YLO Y C
Remote
Condensing Unit
(Two-Stage Cooling)
Two-Stage Heating with Two-Stage Cooling
Thermostat Diagrams
T A
HERMOSTAT PPLICATION
T-Stat selection jumper in
T
single-stage thermostat
W
O
position.
ON
3
2
1
DIP switch position 3: ON
Delay Period: 10 minutes.
W
IRING
Thermostat
( )
Two-Stage Heating
with
Two-Stage Cooling
Furnace Integrated
DEHUM
Control Module
TWIN
Dehumidistat
[Optional]
TSTAT
S
I
OFF
N
3
G
L
2
E
1
DIP switch position 3: OFF
Delay Period: 5 minutes.
6/04