Wiring Diagram

7
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
5H78233C12 REV A Two-Stage, Standing Pilot, 100% Shut-Off, Single-Phase.
J-Box
R
2
4
H
H
T-D Relay
Switch Pressure
Gnd
BL
T1
T2
C
F
V
G
BL
BL
BL
BK
W
W
Board Terminal
XFMR * 24V
3
1
BK
W
Motor Exhaust Power
Fan Motor
Limit Control
R
BL
Some models may have limit control to pressure switch wire routed outside of J-box.
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.
UNIT HEATER WIRING DIAGRAM
Indicates Terminal Board Connection
Low-Stage Operator
Two-Stage Therm
t°
TD Relay Heater
H
H
Pressure
Switch
Limit Control
T2
F
C
t°
High
Low
BA
High-Stage Operator
C
TR
TH
ECO
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
V
BA
TH T
R
W
Combination Gas Control
ECO Connection
ECO
Combination
Gas Control
(By Others)
Therm
Low Volt
Two-Stage
C
Low High
Fan
Motor
TDC
2
4
TD Relay TD Relay
Power Exhauster Motor
3
1
TDC