Transcript
2-424.4 May, 2005
WIRING DIAGRAMS Models HER, VE, PTE electric unit heaters Two-In One Diagrams Two wiring diagrams are furnished for each circuit configuration in this manual. Included are a connection diagram at the left for field installation and a circuit schematic at the right to aid in continuity and trouble shooting. Solid lines show pre-wiring performed at the factory; dotted lines inform the installer of connections required to put the heater in operation. NOTE: As indicated in every diagram, all wiring must comply with the National Electrical Code and all local codes. All components must agree with their respective power source.
Wiring Diagram Selection Diagrams are readily identified in the page location index on the following page. This allows for the correct wiring diagram to be selected using the model, size, and power code of the unit heater. Select the correct wiring diagrams as follows: 1. 2. 3.
Determine unit heater model and size. Select power code number from Table 2.3. Reference unit heater model in the Page Location Index (Table 2.4) with power code number of the corresponding wiring diagram.
CAUTION Turn off all power to unit before wiring. Failure to wire this unit according to this wiring diagram may result in injury to the installer or user. For deviations, contact factory.
Abbreviations and Symbols To facilitate inter pretation and enable simplification the abbreviations and symbols have been selected as recommended by ANSI (American National Standards Institute) and NEMA (National Electrical Manufacturers Association) standards. XFMR or TR V Hz φ LC THERM or TH G HTR H SW C "J" Box L H1, H2, etc. O.L.C. R Rc VA X1,X2, etc. L1, L2, etc. T1, T2, etc.
Transformer Volts Cycle or Hertz Phase Limit Control Thermostat Ground Heater Hot or High Switch Common Junction Box Low Transformer Primary Terminals Overload Contact Relay Relay Contact Volt-Ampere Transformer Secondary Terminals Electric Load Terminals Starter or Motor Terminals
Wire Color Coding BK Black BU Blue R Red W White Y Yellow Wire Color Coding BK Black BL Blue R Red W White Y Yellow X1,X2, etc. Transformer Secondary Terminals L1, L2, etc. Electric Load Terminals T1, T2, etc. Starter or Motor Terminals
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE Table 2.1 Unit Power Requirements (AMPS) - HER Models Power Supply 208/1 240/1 208/3 240/3 480/3
HER 50
HER 75
HER100
HER125
HER150
HER200
HER250
24.5 21.3 14.3 12.5 6.5
36.5 31.7 21.3 18.5 9.5
49.4 42.9 29.0 25.3 13.3
36.0 31.4 16.3
42.9 37.4 19.3
56.8 49.4 25.3
70.7 61.4 31.4
Table 2.2 Unit Power Requirements (AMPS) - VE & PTE Models Power Supply 208/1 240/1 208/3 240/3 480/3
VE 50 21.4 14.5 12.7 6.7
VE 75 31.9 21.4 18.6 9.7
VE 100
VE 150
VE 200
VE 250
42.3 28.3 24.6 12.7
42.5 37.0 19.0
49.0 25.0
31.0
Table 2.3 Power Code Selection 208V/1φ Power Code
11
Power Supply (Volts/Phase) 240/V1φ 208V/3φ 240V/3φ 12
31
32
480V/3φ 33
Table 2.4 Electric Unit Heater Page Location Index Model No. HER 50 HER 75 HER100 HER125 HER150 HER200 HER250 VE 50 VE 75 VE 100 VE 150 VE 200 VE 250 VE 300 VE 400 VE 500 PTE300 PTE400 PTE500
2
11 3 3 4 -
12 3 3 4 9 9 9 -
Power Code 31 5 5 5 5 6 7 7 10 10 10 13 -
32 5 5 5 5 5 7 7 10 10 10 13 13 -
33 8 8 8 8 8 8 8 11 11 11 14 14 14 12 12 12 12 12 12
VE/PTE 300 1-stage 2-stage 19.5 37.6
VE/PTE 400 1-stage 2-stage 25.5 49.6
VE/PTE 500 1-stage 2-stage 31.5 61.5
5H70253A1 HEATING
ELEMENTS
* FUSED DISCONNECT SWITCH
POWER TERMINAL BLOCK
208V OR 240V/60Hz/1 POWER SUPPLY
CONTACTOR
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
GROUND LUG
COIL
LIMIT CONTROL
FAN MOTOR
*
LINE VOLT THERM USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
CONTROL TERMINAL BLOCK
ELECTRIC UNIT HEATER WIRING DIAGRAMS
CONTACTOR
COIL
FAN MOTOR
HEATING ELEMENTS
LIMIT CONTROL
THERM
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
208V OR 240V/60 Hz/1 Ø POWER SUPPLY
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
208V or 240V, single-phase power supply, 5kw, 7.5kw Horizontal Models
3
5H70253A2 REV F
4 CONTACTOR
208V or 240V, single-phase power supply, 10kw Horizontal Model
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
GROUND LUG
COIL
LIMIT CONTROL
ELEMENTS
HEATING
* FUSED DISCONNECT SWITCH
POWER TERMINAL BLOCK
208V OR 240V/60Hz/1 Ø POWER SUPPLY
FUSE BLOCK
FAN MOTOR
*
LINE VOLT THERM
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
CONTROL TERMINAL BLOCK
ELECTRIC UNIT HEATER WIRING DIAGRAMS
THERM
CONTACTOR
COIL
FAN MOTOR
HEATING ELEMENTS
LIMIT CONTROL
FUSE
FUSE
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
208V OR 240V/60 Hz/1 Ø POWER SUPPLY
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
5H70253A4 REV E FAN MOTOR
HEATING ELEMENTS
* FUSED DISCONNECT SWITCH
POWER TERMINAL BLOCK
208V OR 240V/60Hz/3 Ø POWER SUPPLY
CONTACTOR
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
GROUND LUG
COIL
LIMIT CONTROL
LINE VOLT THERM
*
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
CONTROL TERMINAL BLOCK
ELECTRIC UNIT HEATER WIRING DIAGRAMS
LIMIT CONTROL
THERM
1 15kw on 240V/3 Ø only
HEATING ELEMENTS
CONTACTOR
COIL
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
FAN MOTOR
POWER SUPPLY
208V OR 240V/60Hz/3 Ø
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
208V or 240V, three-phase power supply, 5kw, 7.5kw, 10kw, 12.5kw, 15kw Horizontal Models
5
5H70253A5
6
208V, three-phase power supply, 15kw Horizontal Model 208V/60Hz/3 Ø POWER SUPPLY
FAN MOTOR
HEATING ELEMENTS
* FUSED DISCONNECT SWITCH
POWER TERMINAL BLOCK
CONTACTOR
FUSE BLOCK
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
GROUND LUG
COIL
LIMIT CONTROL
LINE VOLT THERM
*
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
CONTROL TERMINAL BLOCK
ELECTRIC UNIT HEATER WIRING DIAGRAMS
THERM
LIMIT CONTROL
FUSE
COIL
FUSE
HEATING ELEMENTS
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
CONTACTOR
FAN MOTOR
208V/60Hz/3 Ø POWER SUPPLY
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
5H70253A6 ELEMENTS
HEATING
ELEMENTS
HEATING
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
GROUND LUG
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
208V OR 240V/60Hz/3 Ø POWER SUPPLY
FUSED DISCONNECT SWITCH
*
POWER TERMINAL BLOCK
NO.1 FUSE BLOCK
LIMIT CONTROL
NO.2 FUSE BLOCK
FAN MOTOR
LINE VOLT THERM
*
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
CONTROL TERMINAL BLOCK
NO.1 CONTACTOR
COIL
COIL
NO.2 CONTACTOR
ELECTRIC UNIT HEATER WIRING DIAGRAMS
FUSE
FUSE
CONTACTOR
FUSE
CONTACTOR
HEATING ELEMENTS
COIL
FUSE
FUSE
FUSE
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
LIMIT CONTROL
FAN MOTOR
HEATING ELEMENTS
COIL
THERM
POWER SUPPLY
208V OR 240V/60Hz/3 Ø
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
208V or 240V, three-phase power supply, 20kw, 25kw Horizontal Models
7
5H70253A7
8
480V or 600V, three-phase power supply, 5kw thru 25kw Horizontal Models
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
GROUND LUG
COIL
LIMIT CONTROL
POWER SUPPLY
480V/60Hz/3 Ø
POWER TERMINAL BLOCK
CONTACTOR
FUSE BLOCK
* FUSED DISCONNECT SWITCH
HEATING ELEMENTS
FAN MOTOR
LINE VOLT THERM
*
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
CONTROL TERMINAL BLOCK
240V X4 X2 X3 X1
TRANSFORMER
480V
H1 H3 H2 H4
ELECTRIC UNIT HEATER WIRING DIAGRAMS
THERM
FUSE
240V
480V
COIL
LIMIT CONTROL
FAN MOTOR
FUSE
FUSED DISCONNECT SWITCH (BY OTHERS)
HEATING ELEMENTS
CONTACTOR
480V/60Hz/3 Ø POWER SUPPLY
GROUND LUG
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
5H70253A8
*
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
SIDE TERMINAL BOX
LIMIT CONTROL
HEATING ELEMENTS
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS
LINE VOLT THERM
CONTACTOR
GROUND LUG
COIL
POWER TERMINAL BLOCK
FUSED DISCONNECT SWITCH 240V/60Hz/1Ø POWER SUPPLY
POWER JUNCTION BOX
CONTROL TERMINAL BLOCK
*
ELECTRIC UNIT HEATER WIRING DIAGRAMS
FAN MOTOR
CONTACTOR
COIL LIMIT CONTROL
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
FAN MOTOR
HEATING ELEMENTS
THERM
240V/60Hz/1 Ø POWER SUPPLY
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
240V, single-phase power supply, 5kw, 7.5kw, 10kw Vertical Models
9
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
5H70253A9
10
*
208V or 240V, three-phase power supply, 5kw, 7.5kw, 10kw Vertical Models
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
SIDE TERMINAL BOX
LIMIT CONTROL
HEATING ELEMENTS
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS
LINE VOLT THERM
COIL
POWER JUNCTION BOX
CONTACTOR
GROUND LUG
CONTROL TERMINAL BLOCK
*
POWER TERMINAL BLOCK
FUSED DISCONNECT SWITCH 208V or 240V/60Hz/3 Ø POWER SUPPLY
ELECTRIC UNIT HEATER WIRING DIAGRAMS
FAN MOTOR
THERM
LIMIT CONTROL
HEATING ELEMENTS
CONTACTOR
COIL
FAN MOTOR
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
208V OR 240V/60Hz/3 Ø POWER SUPPLY
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
5H70253A10
*
COIL
POWER JUNCTION BOX
CONTACTOR
GROUND LUG
CONTROL TERMINAL BLOCK
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
SIDE TERMINAL BOX
LIMIT CONTROL
HEATING ELEMENTS
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS
LINE VOLT THERM
POWER TERMINAL BLOCK
FAN MOTOR
H3
H2
H4
BLUE
X4
X3
X1
TRANSFORMER JUNCTION BOX
FUSE BLOCK
RED
X2
480V TRANSFORMER 240V
H1
FUSED DISCONNECT SWITCH 480V/60Hz/3 Ø POWER SUPPLY SHOWN
*
ELECTRIC UNIT HEATER WIRING DIAGRAMS
THERM
FUSE
FUSE
LIMIT CONTROL
FAN MOTOR
HEATING ELEMENTS
CONTACTOR
COIL
240V
480V
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
480V/60Hz/3 Ø POWER SUPPLY SHOWN
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
480V or 600V, three-phase power supply, 5kw, 7.5kw, 10kw Vertical Models
11
12
5H70253A11 REV H
LIMIT CONTROL
AUX. SWITCH
COIL
COIL
CONTROL TERMINAL BLOCK
WARNING ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
SIDE TERMINAL BOX
HEATING ELEMENTS
* LINE VOLT 2-STAGE THERM
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
C
CONTACTOR #2
FUSE BLOCK #2
CONTACTOR #1
FUSE BLOCK #1
POWER TERMINAL BLOCK
POWER JUNCTION BOX
H L
GROUND LUG
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS
FAN MOTOR
X4
X3
X1
TRANSFORMER JUNCTION BOX
FUSE BLOCK
X2
H3 H2 H4 480V TRANSFORMER 240V
H1
L1
L2
L3
*230V/60Hz/3Ø POWER SHOWN 3Ø CIRCUIT BREAKER
ELECTRIC UNIT HEATER WIRING DIAGRAM
t°
t°
FUSE
AUX. SWITCH
FUSE
HI
2-STAGE THERM
LO
FUSE
FAN MOTOR
FUSE
STAGE #2 HEATING ELEMENTS
CONTACTOR #2
COIL
STAGE #1 HEATING ELEMENTS
FUSE
FUSE
FUSE
FUSE
LIMIT CONTROL
GROUND LUG
3Ø CIRCUIT BREAKER (BY OTHERS)
CONTACTOR #1
COIL
240V
480V
L1 L2 L3
480V/60Hz/3Ø POWER SUPPLY SHOWN
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
480V or 600V, three-phase power supply, 30kw, 40kw, and 50kw Vertical and Power Throw Models
5H70253A12
*
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
SIDE TERMINAL BOX
LIMIT CONTROL
HEATING ELEMENTS
TIME DELAY RELAY
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS
LINE VOLT THERM
CONTROL TERMINAL BLOCK
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
CONTACTOR
COIL
POWER JUNCTION BOX
GROUND LUG
POWER TERMINAL BLOCK
FAN MOTOR
FUSED DISCONNECT SWITCH 208V or 240V/60Hz/3 Ø POWER SUPPLY
*
ELECTRIC UNIT HEATER WIRING DIAGRAMS
THERM
HEATING ELEMENTS
LIMIT CONTROL
FAN MOTOR
CONTACTOR
COIL
TIME DELAY RELAY GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
208V or 240V/60Hz/3 Ø POWER SUPPLY SHOWN
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
208V or 240-volt, three-phase power supply, 15kw, 20kw Vertical Models
13
5H70253A13
14
*
480V or 600-volt, three-phase power supply, 15kw, 20kw, 25kw Vertical Models
ALL UNITS MUST BE WIRED AS SHOWN IN THIS WIRING DIAGRAM. INCORRECT WIRING MAY BE HAZARDOUS TO PERSON AND PROPERTY. DAMAGE TO OR FAILURE OF UNITS CAUSED BY INCORRECT WIRING IS NOT COVERED BY STANDARD WARRANTY.
WARNING
ALL WIRING MUST COMPLY WITH NATIONAL ELECTRIC CODE AND ALL LOCAL CODES. ALL COMPONENTS MUST AGREE WITH THEIR RESPECTIVE POWER SOURCE.
SIDE TERMINAL BOX
LIMIT CONTROL
HEATING ELEMENTS
TIME DELAY RELAY
WIRING LEGEND FIELD WIRING FACTORY WIRING WIRE NUT * SUPPLIED BY OTHERS
LINE VOLT THERM
CONTROL TERMINAL BLOCK
USE LISTED THERMOSTAT HAVING A RATING OF 1/4 HP 240V OR GREATER
COIL
FAN MOTOR
POWER JUNCTION BOX
CONTACTOR
GROUND LUG
POWER TERMINAL BLOCK H3
H2
H4
BLUE TRANSFORMER JUNCTION BOX
FUSE BLOCK
RED
480V TRANSFORMER 240V X4 X2 X3 X1
H1
FUSED DISCONNECT SWITCH 480V/60Hz/3 Ø POWER SUPPLY SHOWN
*
ELECTRIC UNIT HEATER WIRING DIAGRAMS
TIME DELAY RELAY COIL
240V
480V
LIMIT CONTROL
FAN MOTOR
FUSE
HEATING ELEMENTS
CONTACTOR
THERM
FUSE
GROUND LUG
FUSED DISCONNECT SWITCH (BY OTHERS)
480V/60Hz/3 Ø POWER SUPPLY SHOWN
2-424.4 — WIRING DIAGRAMS MODELS HER, VE, PTE
(THIS PAGE HAS BEEN INTENTIONALLY LEFT BLANK)
15
For SERVICE contact your local qualified installation and service contractor or appropriate utility company. As Modine Manufacturing Company has a continuous product improvement program, it reserves the right to change design and specifications without notice. Commercial HVAC&R Division • Modine Manufacturing Company • 1500 DeKoven Avenue • Racine, Wisconsin 53403-2552 Tel: 1.800.828.4328 (HEAT) • www.modine.com © Modine Manufacturing Company 2005
5/05 - Litho in USA
