Wiring Diagram

8
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
5H78233C12 REV A Two-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.
Power Exhauster Motor
TDC
1
3
TD Relay TD Relay
Starter Overload
3
1
TDC
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 Te rm i na l
J-Box
BL
BK
BR
Xfmr * 24V
Switch Pressure
Control Limit
Power Exhaust Motor
W
Some models may have limit control to pressure switch wire routed outside of J-box.
C
L3L2
L1
* 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
230V/60Hz/3Ø Power Shown Circuit Breaker (By Others)
L3
L2
L1
T1
T2
T3
Fan Motor
3Ø Starter (By Others)
L3
L2
L1
Circuit Breaker (By Others)
L1 L2 L3
UNIT HEATER WIRING DIAGRAM
Indicated Terminal Board Connection
Fan Motor
230V/60Hz/3Ø Power Shown
Two-Stage Therm
t°
TD Relay Heater
H
H
Pressure
Switch
Limit Control
T2
F
C
t°
High
Low
C
HighLow
C
Two-Stage Low Volt Therm (By Others)
T1
G
Xfmr
230V
24V
V
BA
TH TR
W
Combination Gas Control
ECO
Connection
ECO
Low-Stage Operator
BA
High-Stage Operator
TR
TH
ECO
Combination
Gas Control
Starter
Coil