Wiring Guide

21
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
5H78233C3 REV A Two-Stage, Intermittent Pilot Ignition, 100% Shut-Off, with Continuous Retry, Three-Phase.
C
HighLow
(By Others) Therm Low Volt Two-Stage
Xfmr * 24V
Switch Pressure
W
BR
BK
BL
J-Box
Board Terminal
W
O
BK
BL
BL
BL
G
V
F
C
T2
T1
R
BL
Control
Limit
Gnd
R
1
3
T-D Relay
H
H
4
2
Motor Exhaust Power
Fan Motor
TDC
2
4
TD Relay TD Relay
Power
Exhauster
Motor
3
1
TDC
R BL Y W G
O
Ignitor
BK
R BL Y W G
O
R BL Y W G
O
Ignitor
BK
R BL Y W G
O
Ignitor
ROBERTSHAWHONEYWELL
MV
MV
SPAR
K
24V
PV
MV/PV
24V(GND)
GND
TH(24V)
PV
SPARK
PV/MV
TR(GND)
GND
ROBERTSHAWHONEYWELL
MV
MV
SPAR
K
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
PV
SPARK
PV/MV
TR(GND)
GND
ROBERTSHAWHONEYWELL
MV
MV
SPARK
24V
PV
MV/PV
24V(GND)
GND
TH(24V)
PV
SPARK
PV/MV
TR(GND)
GND
IGNITION CONTROLLERIGNITION CONTROLLER
IGNITION CONTROLLERIGNITION CONTROLLER
V
24V
230V
Xfmr
G
T1
* Alternate Xfmr. Primary Xfmr Wires 230V/60Hz/1Ø-BK & Y (OR O) 200V/60Hz/1Ø-BK & R Wire nut the wire not used.
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°C wire for replacements.
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.
Wiring Legend
Line
24V.
Factory Field Wire Nut
L3
L2
L1
Circuit Breaker (By Others)
L1 L2 L3
UNIT HEATER WIRING DIAGRAM
Indicates Terminal Board Connection
Fan Motor
230V/60Hz/3Ø Power Shown
BK
Y
R
TD Relay Heater
H
H
Pressure Switch
Limit Control
T2
F
C
Two-Stage Therm
t°
t°
High
Low
C
Therm "High"
PV/MV
PV
MV
Alternate Combination Gas Control
W
W
TH TR
D
D
AB
Combination Gas Control
W
B
A
P
C M
Hi-Stage Operator
Lo-Stage Operator
M
P
A
Pilot
Operator
B
C
C
L3L2
L1
230V/60Hz/3Ø Power Shown Circuit Breaker (By Others)
L3
L2
L1
T1
T2
T3
Fan
Motor
3Ø Starter (By Others)
Some models may have limit control to pressure switch wire routed outside of J-box.