Wiring Diagram

4
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
5H78233C7 REV A Single-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.
F
H
H
TD Relay Heater
t°
Therm
T2
CV
Limit Control
Pressure Switch
TH
ECO
TR
Combination Gas Control
Fan Motor
L3
L2
L1
Circuit Breaker (By Others)
L1 L2 L3
230V/60Hz/3Ø Power Shown
Starter Coil
Starter Overload
T1
G
Xfmr
230V
24V
Power
Exhaust
Motor
ECO
TH TR
ECO
Connection
Combination Gas Control
Low Volt Therm (By Others)
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
Pressure Switch
Indicates Terminal Board Connection
3
TD Relay TDC
1
24
TD Relay TDC
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
Terminal 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
Gas Control Combination Alternate
Board "G" Terminal
TR
TH
Switch Pressure
Connections
ECO
ECO
TH
TR
ECO
Alternate Combination Gas Control
Pressure Switch
Terminal Board "G"
ECO Connections
Some models may have limit control to pressure switch wire routed outside of J-box.