Wiring Guide

17
6-446 — WIRING DIAGRAMS MODELS PDP/BDP
5H78233B8 Single-Stage, Standing Pilot, 100% Shut-Off, Three-Phase.
TD Relay TDC
TD Relay TDC
Combination Gas Control
TR
TH
Pressure Switch
Limit Control
V
Alternate Combination Gas Control
2
1
Terminal Board "G"
Pressure Switch
W
Pressure Switch
W
BL
TR TH
Combination Gas Control
UNIT HEATER WIRING DIAGRAM
Wiri
ng Legend
Line 24V.
Factory Field Wire Nut
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° wire for replacements.
Indicates Terminal Board Connection
31
O.L.C.
2
4
T2
F
C
Xfmr
H1
H2H3
H4
X1
X2 X3
X4
460V
230V
460V/60Hz/3ØPower Shown
Fan Motor
L1 L2 L3
Circuit Breaker (By Others)
L1 L2 L3
Starter Coil
H
H
TD Relay Heater
Therm
t°
230V
Xfmr
24V
T1
G
Power
Exhaust
Moto
r
Power Exhaust Motor
2
4
H
H
T-D Relay
3
1
R
Gnd
Limit Control
BL
R
T1
T2
C
F
V
G
BL
W
Terminal Board
24V Xfmr
J-Box
BL
Low Volt Therm (By Others)
R
T1 T2 T3
Fan Motor
L1 L2
L3
C
OR
BK
Xfmr
H1
H2H3
H4
X1
X2 X3
X4
460V
230V
460V/60Hz/3Ø Power Shown Circuit Breaker (By Others)
L2 L1 L3
BK
Y
R
3 Phase Starter (By Others)
Xfmr
H1
H2
To L 2
X2
X3
To L 1
575V
230V
Alternate Wiring For Entrance J-Box 575V Transformer
To 24V Xfmr "BK"
To 24V Xfmr "O or R"
BK Y
To Starter Coil
R
BL
X4 X1
Some models may have limit control to pressure switch wire routed outside of J-box.