Instruction manual
44
3. For most jobs, about 400 CFM per ton when cooling is
desirable.
4. Installation is to be adjusted to obtain temperature rise within
the range specified on the rating plate.
5. The chart is for information only. For satisfactory operation,
external static pressure must not exceed value shown on
rating plate. The shaded area indicates ranges in excess of
maximum external static pressure allowed when heating. The
data for 0.6" W.C. to 0.8" W.C. is shown for air conditioning
purposes only.
6. The above chart is for U.S. furnaces installed at 0 to 2,000 ft
(609.6 m). At higher altitudes, a properly de-rated unit will
have approximately the same temperature rise at a particular
CFM, while the ESP at that CFM will be lower.
WIRING DIAGRAM—WFD195
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
O
R
(
M
E
D
L
O
W
)
BU
(
M
E
D
)
R
(
L
O
W
)
C
P
M
C
G
W
T
H
(
3
)
L
I
N
E
-
H
X
F
M
R
-
H
G
N
D
L
N
B
R
G
Y
R
BU
B
K
115 V
A
C
H
O
T
and P
A
R
K
T
erm
inals
LINE-H
N
O
C
G
Y
B
K
O
R
G
G
N
D
1
1
5
V
A
C
2
4
V
A
C
T
B
K
G
N
D
L
N
W
1
O
R
G
N
D
W
R
W
G
N
D
N
O
B
K
(
H
I
)
B
R
B
R
Capacitor
Y
W
Y
B
U
P
R
R
O
R
P
K
B
K
W
W
C
F
S
H
I
H
E
A
T
-
H
L
O
H
E
A
T
-
H
I
N
D
I
G
N
E
A
C
-
H
1
1
5
V
A
C
2
4
V
A
C
G
N
D
R
O
1
(
5
)
R
O
2
(
1
1
)
H
L
O
(
1
)
H
L
I
(
7
)
M
V
C
(
9
)
G
N
D
(
8
)
T
R
(
6
)
OR
W
W
BU
Y
OR
R
G
BR
P
K
PK
GY
W
115 VAC Neutral
Terminals
BK
BK
G
Y
C
G
Y
W
R
2
W
O
R
B
U
Y
O
R
O
R
G
Y
P
K
R
O
R
G
Y
W
H
XFMR-H
G
Y
O
R
G
B
R
1
2
3
1
2
1
1
1
0
9
8
7
6
5
4
2
4
V
A
C
Hum
idifier
2
4
V
A
C
P
S
O
(
4
)
M
V
L
(
2
)
P
S
(
1
0
)
C
N
O
C
N
O
ON OFF
2nd
Stage
Delay
Mode
Heat
Off
Delay
FS
1
2
3
H
I
O
R
OR
P
M
C
H
I
M
V
H
(
1
2
)
*
*
*
*
COO L- H
P
R
Y
B
K
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 (Temp.)
Igniter
Pressure Switch
Overcurrent
Prot. Device
High Voltage Field
Gray GY
White W
Black BK
Red R
Blue BU
Orange OR
Yellow Y
Green G
Pink PK
Azure A
Violet V
Brown BR
Color Symbol
40 VA
Transform
er
24V Therm
ostat
Connections
Integrated
Control
Module
Factory Settings Shown
Fuse
Diagnostic
LED
See Note 6
See Note 4
HEAT-H
COOL-H
Circulator
Blower
Low Voltage Field
Humidifier
Blower Compartment
Burner Compartment
Manual Reset
Auxiliary Limits
1. In upflow blower
deck
2. In counterflow
blower housing
Induced Draft Blower
Auto Reset
Primary Limit
Control
Induced Draft
Blower Pressure
Switch
Manual Reset Rollout Limit (Control(s)
(Single Control On 45k Btu)
Front Cover
Pressure Switch
12-Circuit
Connector
Hot
Surface
Igniter
Gas Control Valve
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
Blower Com
partm
ent
Door Switch
(O
pen W
hen
Door Open)
Integrated
C
ontrol M
odule
Integrated C
ontrol M
odule
Integrated C
ontrol M
odule
24V Therm
ostat at 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
Flame Sensor
Hot Surface Igniter
Induced Draft
Blower
Circulator
Blower
Electronic
Air Cleaner
Junction Box
Line N
eutrals
Disconnect
Door
Switch
To 115 VAC/10/60 Hz Power Supply
with Overcurrent Protection Device
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
Flame
Sensor
To 115 VAC/10/60 Hz
Power Supply with
Overcurrent Protection
Device
Disconnect
O
Hum
idifier