Wiring Diagram

5
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
5H78233C11 REV B Two-Stage, Standing Pilot, 100% Shut-Off, Single-Phase.
J-Box
Power Exhaust Moto
r
R
2
4
H
H
T-D RELAY
Gnd
BL
Limit Control
BL
R
T1
T2
C
F
V
G
BL
BL
BL
BK
W
W
Terminal Board
* 24V Xfmr
Fan Motor
3
1
BK
Wiring Legend
Line
24V.
Factory Field Wire Nut
* Alternate Xfmr. Primary Xfmr Wires 230V/60Hz/1Ø-BK & Y (OR O) 200V/60Hz/1Ø-BK & R Wire nut the wire not used.
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°C wire for replacements.
21
Low-Stage Operator
Two-Stage Therm
t°
TD Relay Heater
H
H
UNIT HEATER WIRING DIAGRAM
Pressure
Switch
Indicates Terminal Board Connection
Limit Control
T2
F
C
BL
t°
High
Low
BA
High-Stage Operator
C
115V/60Hz/1Ø Power Shown Circuit Breaker (By Others)
Second Circuit Breaker Req'd. For 230V,200V,1Ø
L1(BK)
L2(W)
Circuit Breaker (By Others)
Second Circuit Breaker Req'd. For 230V,200V,1Ø
115V/60Hz/1Ø Power Shown
L1 (BK)
L2 (W)
T1
G
Xfmr
115V
24V
2
1
B
A
W
Combination Gas Control
V
Combination Gas Control
(By Others) Therm Low Volt Two-Stage
C
Low High
Some models may have limit control to pressure switch wire routed outside of J-box.
W
Switch Pressure
Fan Motor
TDC
2
4
TD Relay TD Relay
Power Exhauster Motor
3
1
TDC