Wiring Guide

19
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
W
C
M
P
Operator Main Operator Pilot
Gas Control Combination
TD Relay TDC
TD Relay TDC
UNIT HEATER WIRING DIAGRAM
BL
Wiri
ng Legend
Line 24V.
Factory Field Wire Nut
W
Pressure Switch
Caution Failure to wire this unit according to this wiring diagram may result in injury to the installer or user. For deviations contact the factory.
Note to installer: Attach this diagram near heater. All wiring must comply with national electric code and all local codes. All components must agree with their respective power source. Use 105° wire for replacements.
Indicates Terminal Board Connection
31
O.L.C.
2
4
T2
F
C
Xfmr
H1
H2H3
H4
X1
X2 X3
X4
460V
230V
460V/60Hz/3ØPower Shown
Fan Motor
L1 L2 L3
Circuit Breaker (By Others)
L1 L2 L3
Starter Coil
H
H
TD Relay Heater
V
Limit Control
Pressure Switch
Therm
t°
230V
Xfmr
24V
T1
G
Power Exhaust Motor
Power Exhaust Motor
2
4
H
H
T-D Relay
3
1
R
Gnd
Limit Control
BL
R
T1
T2
C
F
V
G
BL
W
Terminal Board
24V Xfmr
J-Box
BL
R
T1 T2 T3
Fan Motor
L1 L2
L3
C
OR
BK
Xfmr
H1
H2H3
H4
X1
X2 X3
X4
460V
230V
460V/60Hz/3Ø Power Shown Circuit Breaker (By Others)
L2 L1 L3
BK
Y
R
3 Phase Starter (By Others)
Xfmr
H1
H2
To L 2
X2
X3
To L 1
575V
230V
Alternate Wiring For Entrance J-Box 575V Transformer
To 24V Xfmr "BK"
To 24V Xfmr "O or R"
BK Y
To Starter Coil
R
BL
X4 X1
MV
PV/MV
PV
Gas Control Combination Alternate
43
1
2
(By Others) Therm Volt Low
D
D
TH TR
W
Alternate Combination Gas Control
MV
PV
PV/MV
ROBERTSHAWHONEYWELL
MV
MV
SPARK
24V
PV
MV/PV
24V(GND)
GND
TH(24V)
PV
SPARK
PV/MV
TR(GND)
GND
Ignitor
ROBERTSHAWHONEYWELL
MV
MV
SPARK
24V
PV
MV/PV
24V(GND)
GND
TH(24V)
PV
SPARK
PV/MV
TR(GND)
GND
Ignitor
O
G W Y BL R
BK
ROBERTSHAWHONEYWELL
MV
SPARK
24V
PV
MV/PV
24V(GND)
GND
W
BK
ROBERTSHAWHONEYWELL
MV
MV
SPARK
24V
PV
MV/PV
24V(GND)
GND
TH(24V)
PV
SPARK
PV/MV
TR(GND)
GND
Ignitor
O
G W Y BL R
IGNITION CONTROLLERIGNITION CONTROLLER
IGNITION CONTROLLERIGNITION CONTROLLER
Some models may have limit control to pressure switch wire routed outside of J-box.
COMBINATION GAS CONTROL
MV/PV
MV
HONEYWELL ROBERTSHAW
M
1
C
2
P3
PV
(MV/PV)
(MV)
(PV)
5H78233B1 REV A Single-Stage, Intermittent Pilot, 100% Shut-Off, with Continuous Retry Three-Phase.