Modine Manufacturing POR Installation And Service Manual page 6

installation
figure .1
single unit Wiring diagram
WARNING
All appliances must be wired strictly in accordance
with wiring diagram furnished with the appliance.
Any wiring different from the wiring diagram could
result in a hazard to persons and property.
BURNER
MOTOR
VALVE
BK W V
W
BL/W tr W
CAD
IGNITOR
CELL
BURNER HOUSING
ALL WIRING MUST CONFORM TO
NATIONAL ELECTRIC CODE NFPA #70
AND APPLICABLE LOCAL CODES
figure .2
typical multiple unit installation and Booster Pump Wiring diagram
115V/60HZ/1Ø
FUSED DISCONNECT
SWITCH (BY OTHERS)
UNIT #1
GROUND
PRESSURE
SWITCH
ACCESSORY

FIELD WIRING
CONNECTIONS
(WIRE NUTS
BY OTHERS)
W
BK
GROUND
EQUIPMENT
GR
GROUND
BK T
PRIMARY
CONTROL
T
W
VIOLET
OR
BL/W tr
Y Y
LOW
VOLT.
THERM.
JUNCTION BOX
ON BURNER
(BY OTHERS)
FUSED DISCONNECT
SWITCH (BY OTHERS)
115V/60 HZ 1Ø
Single-phase,intermittent ignition,
low voltage thermostat
115V/60HZ/1Ø
FUSED DISCONNECT
SWITCH (BY OTHERS)
FIELD WIRING
JUNCTION BOX
GROUND
(ON HEATER)
IN J-BOX
PRIMARY
T T
CONTROL
BURNER
HOUSING
BURNER
MOTOR
LOW VOLTAGE
T-STAT
(BY OTHERS)
Wiring Legend
FACTORY
FIELD
WIRE NUT
FAN & LIMIT
CONTROL
FAN
MOTOR
FAN LIMIT
FAN
SWITCH
LIMIT
BL
CONTROL
BK
R
FIELD WIRING
JUNCTION BOX
(ON HEATER)
USE COPPER
CONDUCTORS ONLY
BK
W
115V/60HZ/1Ø
FUSED DISCONNECT
SWITCH (BY OTHERS)
UNIT #2
FIELD WIRING
JUNCTION BOX
GROUND
(ON HEATER)
IN J-BOX
PRIMARY
T T
CONTROL
BURNER
PRESSURE
HOUSING
SWITCH
BURNER
ACCESSORY
MOTOR
LOW VOLTAGE
T-STAT
(BY OTHERS)
R
W
25V
115V
1 4
2 3
W BK
BOOSTER PUMP RELAY - BY OTHERS
(HONEYWELL RA89A, W-R809A-3, OR EQUIVALENT)
4-522.4
115V/60HZ/1Ø
FUSED DISCONNECT
SWITCH (BY OTHERS)
GROUND
FAN IN J-BOX
MOTOR
BURNER
MOTOR
VALVE
IGNITOR
BK OR V
BL/W tr W
T
LOW VOLT.
PRIMARY
THERMOSTAT
CONTROL
T
Y
CAD CELL
Y
5H70830B REV. B
115V/60HZ/1Ø
FUSED DISCONNECT
SWITCH (BY OTHERS)
UNIT #3
FIELD WIRING
JUNCTION BOX
GROUND
(ON HEATER)
IN J-BOX
PRIMARY
T T
CONTROL
BURNER
PRESSURE
HOUSING
SWITCH
BURNER
ACCESSORY
MOTOR
LOW VOLTAGE
T-STAT
(BY OTHERS)
This diagram is provided for
reference only. System operation
and compliance with local codes is
BOOSTER PUMP
the responsibility of the installer.
MOTOR
(BY OTHERS)
Note: All wiring shown as dashed
lines is field wiring.
GROUND