Wiring Diagram

2
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
5H78233C6 REV A Single-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.
Alternate Combination Gas Control
1
2
Ter mi na l Board "G"
Pressure Switch
Pressure Switch
W
BL
TR TH
Combination Gas Control
Low Volt Therm (By Others)
TR
TH
Combination Gas Control
Pressure Switch
Limit Control
VC
Power
Exhauster
Motor
TDC
1
3
TD Relay
24V
230V
Xfmr
G
T1
TD Relay
L3
L2
L1
Circuit Breaker (By Others)
L1 L2 L3
TD Relay Heater
HH
Therm
t°
Starter Coil
Starter Overload
3
1
TDC
F
T2
Indicated Terminal Board Connection
Fan Motor
230V/60Hz/3Ø Power Shown
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.
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.
* Alternate Xfmr Primary Xfmr Wires 230V/60Hz/1Ø-BK & Y (OR O) 200V/60Hz/1Ø-BK & R Wire nut the wire not used.
3 Phase Starter (By Others)
* 24V Xfmr
230V/60Hz/3Ø Power Shown Circuit Breaker (By Others)
L1 L2 L3
BR
BK
Factory Field Wire Nut
24V.Line
Wiring Legend
C
L3
L2L1
Fan Motor
T3T2T1
BL
J-Box
Te rm i na
l
Board
W
O
BK
BL
BL
BL
G
V
F
C
T2
T1
R
BL
Limit Control
Gnd
R
1
3
T-D Relay
H
H
4
2
Power Exhaust Motor
UNIT HEATER WIRING DIAGRAM
W
Some models may have limit control to pressure switch wire routed outside of J-box.