Wiring Guide

6
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
5H78233C11 REV B Two-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.
Coil Starter
TDC
1
3
Overload Starter
TD Relay TD Relay
3
1
TDC
Motor
Exhauster
Power
2
4
H
H
T-D
Relay
3
1
R
Gnd
BL
R
T1
T2
C
F
V
G
BL
BL
BL
BK
O
W
Board Terminal
J-Box
BL
BK
BR
Xfm
r
* 24V
Switch Pressure
Control Limit
Power Exhaust Motor
C
L3L2
L1
Note to installer:
A
ttach this diagram near heater.
A
ll 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
T1
T2
T3
Fan Motor
3Ø Starter (By Others)
L3
L2
L1
UNIT HEATER WIRING DIAGRAM
Indicated Terminal Board Connection
Fan
TD Relay Heater
H
H
Pressure
Switch
Limit Control
T2
F
C
230V/60Hz/3Ø Power Shown Circuit Breaker (By Others)
L3
L2
L1
Circuit Breaker (By Others)
L1 L2 L3
230V/60Hz/3Ø Power Shown
HighLow
C
Two-Stage Low Volt Therm (By Others)
V
21
Low-Stage Operator
BA
High-Stage Operator
Combination Gas Control
24V
230V
Xfmr
G
T1
C
Low
High
t° t°
Therm Two-Stage
Motor
Wire nut the wire not used. 200V/60Hz/1Ø-BK & R 230V/60Hz/1Ø-BK & Y (OR O) Primary Xfmr Wires * Alternate Xfmr.
Gas Control Combination
W
A
B
1
2
W
W
Some models may have limit control to pressure switch wire routed outside of J-box.