Manual
2100-540D
Page
43 of 45
FH SERIES
WIRING DIAGRAM
*ELECTRICAL SHOCK HAZARD
*DISCONNECT POWER BEFORE
SERVICING.
DANGER
!
L2 (IGN)
TW
TR
IGNITER
BURNER
MOTOR
OIL
VALVE
CAD
CELL
L1 - LIMIT
L2 (VLV)
CAD
CELL
L2
VALVE
L2 (MTR)
MOTOR
IGNITER
CONDITIONER OR HEAT
1
NOTES
2
IF PRIMARY LIMIT WIRES
ARE TO BE REPLACED,
USE WIRE WITH INSUL.
TEMP. RATING OF 200°C.
REMOVE PURPLE JUMPER
WIRE FOR 2 STAGE AIR
PUMP.
ORANGE
16 PIN WIRING
HARNESS DETAIL
BL
ACK
Y
E
LLO
W
BL
UE/
BL
ACK
GRAY
BL
ACK/
W
H
IT
E
BROW
N
BL
ACK/
W
H
IT
E
YEL
L
O
W
/BL
ACK
6
5
4
7
1
3
8
2
9
11
10
12
14
13
15
16
BL
UE
PURPL
E/
W
HI
T
E
RED
RED/
W
HI
T
E
RED/
YEL
L
O
W
PURPL
E
Y
E
LLO
W
/R
E
D
IF ANY OF THE ORIGINAL WIRE AS
SUPPLIED WITH THIS APPLIANCE
MUST BE REPLACED, IT MUST BE
REPLACED WITH WIRING MATERIAL
HAVING A TEMP. RATING OF AT
LEAST 105°C EXCEPT PRIMARY
LIMIT WIRES. SEE NOTE "1".
WARNING
!
Wh
ite
White
Wh
ite
White
Wh
ite
White
NEUTRAL
White
Pu
rp
le
Pu
rp
le
Pu
rp
le
Pu
rp
le
O
ra
nge
O
ra
nge
GROUND
Green
9
24 VAC
C
Red/White
8
Re
d
Re
d
Re
d
Re
d
1
2
3
4
5
6
7
HEATING DELAY PROFILE TAPS
MODEL
SWITCH
#1
SWITCH
#2
ON DELAY
SECONDS
ON
DELAY
% CFM
PRE-RUN
TIME
SECONDS
PRE-RUN %
CFM
OFF DELAY
SECONDS
OFF
DELAY
% CFM
ALL
OFF
OFF
30
0
60
50
300
82
ON
OFF
30
0
60
50
240
100
OFF
ON
45
0
120
50
300
88
ON
ON
60
0
0
100
180
100
BLOWER
Black
BLOWER
BACKUP
ASSEMBLY
HOT
2
1
1 2 3 4 5 6 7
1 2
8 9
3 4 5
7
PLUG
Bl
ac
k
Bl
ac
k
Black
3 PIN
CONTROL
9 PIN
PLUG
CO
NT
RO
L PA
NEL
VOLTAGE
HIGH
HEA
T
EX
CHA
NGER A
R
EA
UNIT
WIRING
PRIMARY
AND COND. UNIT 24V CONNECTIONS
CFM INDICATOR
(RED LED 6)
2 1
OFF
ON
HEAT
2 1
OFF
ON
ADJ.
2 1
OFF
ON
COOL
2 1
ON
5
FIELD CONNECTIONS TO THERMOSTAT
(GREEN LED 7)
LIMIT SWITCH
CONTROL PLUG
Y1
C
Y/Y2
OFF
DELAY
NEUTRALS
16 PIN BLOWER
CONTROL PLUG
3
24V
120V COM
TRANSFORMER
DOOR SWITCH
G
DH
Black/White
PLUG
14
5 PIN
LOW
Bl
ac
k
Black
3
W
Black
VOLTAGE
LIMIT
RET
URN A
R
EA
FIELD
Black/White
R
20
16 PIN BLOWER
Bl
ac
k
LIMIT
CONTROL
Bl
ac
k
17
1
2
BURNER
ASS'Y
16
4
O
120 VAC
9
18
21
4047-121 A
120 VAC
HUM
22
DIP SW1 DIP SW2
0.75
60°-90°
OFF*
OFF*
1075
0.75
60°-90°
ON
OFF
1035
0.65
60°-90°
OFF
ON
930
0.55
60°-90°
ON
ON
790
1
60°-90°
OFF*
OFF*
1280
1
60°-90°
ON
OFF
1225
0.85
60°-90°
OFF
ON
1060
0.85
60°-90°
ON
ON
1060
HEATING
CFM
HEAT SWITCH SETTINGS
HEAT SWITCH
UNIT
GPH
INPU
FH085V42A
FH110V48A
FH110V60A
TEMP.
RISE
DIP SW1 DIP SW2
FULL
PART
3.5*
OFF*
OFF*
1400
1000
3
ON
OFF
1200
850
2.5
OFF
ON
1000
725
2
ON
ON
800
575
4*
OFF*
OFF*
1600
1150
3.5
ON
OFF
1400
1000
3
OFF
ON
1200
850
2.5
ON
ON
1000
725
5*
OFF*
OFF*
2000
1450
4
ON
OFF
1600
1150
3.5
OFF
ON
1400
1000
3
ON
ON
1200
850
COOL SWITCH SETTINGS
CFM LOAD
FH110V60A
FH085V42A
FH110V48A
UNIT
NOM. A/C
(TONS)
COOL SWITCH
