Instruction manual

46
NOTES:
1.
Set heat anticipator on room thermostat at 0.7 amps.
2. Manufacturer’s specified replacement parts must be used
when servicing.
3. If any of the original wire as supplied with the furnace must be
replaced, it must be replaced with wiring material having a
temperature rating of at least 105ºC. Use copper conductors
only.
4. If heating and cooling blower speeds are not the same,
discard jumper before connecting blower leads. Unused
blower leads must be placed on “PARK” terminals of
integrated control or taped.
5. Furnace must be permanently grounded and conform to NEC
and local codes.
6. To recall the last 5 faults, most recent to least recent, depress
switch for more than 2 seconds in standby (no thermostat
inputs).
WIRING DIAGRAM—WGFM195
Check codes for proper wiring and circuit protection before installation.
HIGH VOLTAGE!
WARNING
Disconnect ALL power before servicing.
Multiple power sources may be present.
Failure to do so may cause property damage, personal injury or death.
R
OR(MED LOW)
BU (MED)
R (LOW)
C
PM
CG
W
Diagnostic LED
TH(3)
LINE-H
GND
N
L
BR
GY
R
BU
BK
115 VAC Hot and Park Terminals
LINE-H
N
O
C
GY
BK
OR
24V Thermostat
Connections
G
GND
11 5 VA C
24 VAC
BK
GND
L
W
OR
HEAT-H
GND
W
R
W
GND
Burner Compartment
Blower Compartment
N
O
COOL-H
BK (HI)
BR
BR
Capacitor
Y
W
Y
BU
PR
R
OR
PK
BK
W
W
Induced Draft Blower
C
Circulator Blower
FS
H
I
H
EA
T-H
LO
H
E
A
T-H
IND
IGN
EAC-H
115 VAC
24VAC
GND
RO1(5)
RO2(11)
HLO(1)
HLI(7)
MVC(9)
GND(8)
BU
Y
OR
R
G
BR
PK
GY
BK
C
G
Y
W
R
Transformer
40 VA
2
W
OR
BU
Y
OR
OR
GY
PK
R
OR
GY
XFMR-H
GY
OR
G
BR
1
2
3
12
11
10
24VAC
Humidifier
24VAC
PSO(4)
MVL(2)
PS(10)
C
NO
C
NO
Integrated
Control
Module
Fuse
ON OFF
2nd
Stage
Delay*
Mode*
Heat
Off
Delay*
FS
1
3
2
HI
PM
C
HI
MVH(12)
*Factory Settings Shown
See
Note 6.
COOL-H
PR
Y
GY
BK
W
115 VAC Neutral
Terminals
BK
TR(6)
XFMR-H
N
1
PK
W
W
W
OR
4
5
6
7
8
9
See
Note 4.
Auto Reset
Primary Limit
Control
Manual Reset
Auxiliary Limits
1. In upflow - blower
deck
2. In counterflow -
blower housing
OR
To 115 VAC/10/60 Hz Power Supply
with Overcurrent Protection Device
OR
Wiring is subject to change.
Always refer to the wiring
diagram on the unit for the
most up-to-date wiring.
Low Voltage (24V)
High Voltage (115V)
Junction
Terminal
Internal To
Integrated Control
Plug Connection
Equipment GND
Field GND
Field Splice
Switch (Temperature)
Igniter
Pressure Switch
Overcurrent
Prot. Device
High Voltage Field
Color
Gray:
White:
Black:
Red:
Blue:
Orange:
Yellow:
Green:
Pink:
Azure:
Violet:
Brown:
Symbol
GY
W
BK
R
BU
OR
Y
G
PK
A
V
BR
Low Voltage Field
0
C
7
6
5
4
3
2
1
8
Steady On =
Off =
1 Flash =
2 Flashes =
3 Flashes =
4 Flashes =
5 Flashes =
6 Flashes =
7 Flashes =
8 Flashes =
Continuous/
Rapid Flashes =
Normal Operation
Control Failure
System Lockout (Retries Exceeded)
Pressure Switch Stuck Closed
Pressure Switch Stuck Open
Open High Limit Switch
Flame Sense without Gas Control Valve
Open Rollout Limit Switch or Open Fuse
Low Flame Signal
Check Igniter or Improper Grounding
Reversed 115 VAC Polarity
Induced Draft
Blower Pressure
Switch
2-Circuit
Connector
Hot
Surface
Igniter
Humidifier
Manual Reset Rollout Limit (Control(s)
(Single Control On 45 kBtu)
Front Cover
Pressure Switch
Gas Control Valve
Flame
Sensor
Junction Box
WARNING:
Disconnect Power Before Servicing.
Wiring to Unit Must Be Properly Polarized
and Grounded.
WARNING:
Disconnect Power
Before Servicing.
Wiring to Unit Must
Be Properly
Polarized and
Grounded.
Junction Box
To 115 VAC/10/60 Hz
Power Supply with
Overcurrent Protection
Device
Disconnect
Disconnect
Flame Sensor
Hot Surface Igniter
Induced Draft
Blower
Circulator
Blower
Electronic
Air Cleaner
Door
Switch
Integrated C
ontrol M
odule
Line N
eutrals
Integrated Control M
odule
Integrated
Control M
odule
24V Therm
ostatat C
onnections
Gas
Control
Valve
Induced Draft
Blower Pressure
Switch
Front Cover
Pressure Switch
To
M
icro
Manual Reset Auxiliary
Limit Controls
Auto Reset
Prim
ary
Lim
it
Control
Manual Reset Rollout
Limit Control(s)
(Single Control on 45k Btu)
40 VA
Transformer
Hum
idifier
Blower Com
partm
ent
Door Switch
(Open W
hen
Door O
pen)