Chromalox PF479-6 User Manual

Electrical Data (60 Hz) Dimensions (In.) Standard

Model Contactor

Volts Watts Phase Amps BTU Height Width Depth Rating (Qty.)

LUH-D-02-81 208 2,667 1 12.8 30A (1) LUH-D-02-21 208/240 2,000/2,667 1 11.1 * 8,850 16 13-1/8 8-7/8 30A (1) LUH-D-02-71 277 2,667 1 9.6 30A (1) LUH-D-04-81 † 1 19.2 30A (1) LUH-D-04-83 †

208 4,000

3 11.2 30A (1) LUH-D-04-21 † 1 16.7 * 30A (1) LUH-D-04-23 †

208/240 3,000/4,000

3 9.6*

13,661 16 13-1/8 8-7/8

30A (1) LUH-D-04-71 277 4,000 1 14.5 30A (1) LUH-D-04-43 480 4,000 3 4.8 30A (1) LUH-D-05-81 † 1 24.0 30A (1) LUH-D-05-83 †

208 5,000

3 13.8 30A (1) LUH-D-05-21 † 1 20.8 * 30A (1) LUH-D-05-23 †

208/240 3,750/5,000

3 12.1 *

17,076 16 13-1/8 8-7/8

30A (1) LUH-D-05-71 277 5,000 1 18.2 30A (1) LUH-D-05-43 480 5,000 3 6.0 30A (1) LUH-D-07-81 † 1 36.1 50A (1) LUH-D-07-83

208 7,500

3 20.9 30A (1) LUH-D-07-21 † 1 31.1 * 30A (1) LUH-D-07-23

208/240 5,625/7,500

3 18.1 *

25,598 20-1/2 17-1/4 11-1/2

30A (1) LUH-D-07-71 277 7,500 1 27.2 30A (1) LUH-D-07-43 480 7,500 3 9.0 30A (1) LUH-D-10-81 † 1 48.0 50A (1) LUH-D-10-83

208 10,000

3 27.8 30A (1) LUH-D-10-21 † 1 41.7 * 30A (1) LUH-D-10-23

208/240 7,500/10,000

3 24.0 *

34,130 20-1/2 17-1/4 11-1/2

30A (1) LUH-D-10-43 480 10,000 3 12.0 30A (1) LUH-D-12-83 208 12,500 3 34.8 50A (1) LUH-D-12-23 208/240 9,375/12,500 3 30.1* 42,663 20-1/2 17-1/4 11-1/2 50A (1) LUH-D-12-43 480 12,500 3 15.1 30A (1) LUH-D-15-83 208 15,000 3 41.8 50A (1) LUH-D-15-23 208/240 11,250/15,000 3 36.2 * 51,195 20-1/2 17-1/4 11-1/2 50A (1) LUH-D-15-43 480 15,000 3 18.1 30A (1) LUH-D-20-23 208/240 15,000/20,000 3 48.0 * 50A (1) LUH-D-20-43 480 20,000 3 24.0

68,460 24 20-1/8 11-1/2

30A (1) LUH-D-25-43 480 25,000 3 30.0 85,525 24 20-1/8 11-1/2 50A (1) LUH-D-30-83 208 30,000 3 83.4 50A (2) LUH-D-30-23 208/240 22,500/30,000 3 72.2 * 102,390 24 20-1/8 17-1/4 50A (2) LUH-D-30-43 480 30,000 3 36.1 30A (2) LUH-D-35-23 208/240 26,250/35,000 3 84.3 * 50A (2) LUH-D-35-43 480 35,000 3 42.1

119,455 24 20-1/8 17-1/4

30A (2) LUH-D-40-23 208/240 30,000/40,000 3 96.0 * 50A (2) LUH-D-40-43 480 40,000 3 48.0

136,520 24 20-1/8 17-1/4

30A (2) LUH-D-45-43 480 45,000 3 54.1 153,585 24 20-1/.8 17-1/4 30A (2)

Chromalox

DIVISION 4 SECTION

LUH

SALES

REFERENCE

DATE

SERVICE REFERENCE

Installation

and

RENEWAL PARTS IDENTIFICATION

PF479-6

JANUARY, 2003

(Supersedes PF479-5)

161-303474-001

Type LUH

Horizontal Unit Heater

*Note: 208V amperage is 86% of 240V value.

Specifications — Table 1

† These models can be field changed from single phase to three phase or three phase to single phase.

Please read all of the following instructions: Failure to observe these precautions could result in personal injury or equipment damage.

1. The heater must be mounted at least 7’ above the floor to pre-

vent accidental contact with the heating elements or fan blade which could cause injury.

2. Keep at least 5’ clearance in front of heater. Refer to Table 2 for

side, top and back clearance requirements.

Clearance Requirements — Table 2

3. The ceiling mounting structure and the anchoring provisions

must be sufficient to support the combined weight of the heater and mounting bracket. (Refer to Table 3 for weights of heater and bracket.)

4. The wall or mounting surface and the anchoring provisions

must be capable of supporting the combined weight of the heater and mounting brackets cantilevered from the mounting surface. (Refer to Table 3 for weights of heater and brackets and for cantilevered force expressed in foot-pounds.)

The heater may be mounted either on the ceiling or on the wall

as follows:

A. CEILING. The ceiling mounting bracket is fastened to the top

of the heater using the four bolts supplied with the mounting bracket. The bracket is then mounted to the ceiling using a 5/8” bolt (supplied by others).

CEILING (Alternate)

1. The heater can be rod mounted to the ceiling by installing

four threaded mounting rods in the threaded holes located on the top of the heater as shown in Figure 2. (Refer to Table 4 for mounting rod thread size.)

2. Securely attach the four mounting rods to the ceiling. (Refer

to Table 2 for wall and ceiling clearances, and Figure 3 for mounting spacing specifications).

B. WALL. Wall mounting kits include both a ceiling mounting

bracket and a wall mounting bracket. First, attach the ceiling mounting bracket to the heater as described in step 4A. Then attach the wall mounting bracket to the wall using four 3/8” bolts (supplied by others). Attach the ceiling mounting bracket on the heater to the wall mounting bracket using the 5/8” bolt provided.

The heater may be rotated to discharge in the desired direction. Open and adjust louvers to desired position. See Figure 4 and 5 for additional mounting details.

Heater & Bracket Weights Combined — Table 3

Mounting Limitations (In.)

Back Side Top to

Basic Model to Wall to Wall Ceiling

LUH-02 through LUH-05 6 6 4 LUH-07 through LUH-15 6 6 6 LUH-20 and LUH-25 6 6 6 LUH-30 through LUH-45 6 6 6

Heater Location Instructions:

Arrange units so their discharge air streams: A. are subjected to a minimum of interference from columns,

machinery and partitions.

B. wipe exposed walls without blowing directly at them. C. are directed away from room occupants in comfort heating. D. are directed along the windward side when installed in a build-

ing exposed to a prevailing wind.

Locate thermostat on interior partition walls or posts away from cold drafts, internal heat sources and away from heater discharge air streams.

Small rooms can be heated by one unit heater. Where two walls are exposed, the heater should be mounted as shown in Figure 1.

Large rooms require multi-unit installation. Number and capacity of units will be determined by volume of building and square feet of floor area to be heated. Arrange units to provide perimeter air circulation where each unit supports the air stream from another.

IMPORTANT

Failure to understand and follow these installation instructions and the “WARNING” notes therein may result in serious personal injury from electrical shock, or from the heater failing due to faulty installation.

FIRE/EXPLOSION HAZARD. This heater is not intended for use in hazardous atmospheres where flammable vapors, gases, liquids or other combustible atmospheres are present as defined in the National Electrical Code. Failure to comply can result in personal injury, explosion or fire. For these applications see PDS CXHA-EP (PF490).

Users should install adequate back-up controls and safety devices with their electric heating equipment. Where the consequenses of failure may be severe, back-up controls are essential.

Do not mount mercury type thermostat directly on unit.

Vibration could cause heater to malfunction.

The heater must be mounted at least 7' above the floor to prevent accidental contact with the heating elements or fan blade which could cause injury.

Keep at least 5' clearance in front of the heater. Refer to Table 2 for side, top and back clearance requirements.

The ceiling mounting structure and the anchoring provisions must be of sufficient strength to support the combined weight of the heater and mounting bracket. (Refer to Table 3 for weights of heater and bracket.)

The wall or mounting surface, and the anchoring provisions must be capable of supporting the combined weight of the heater and mounting brackets cantilevered from the mounting surface. (Refer to Table 3 for weights of heater and brackets and for cantilevered force expressed in foot-pounds.)

Fan blade rotation must be checked. If airflow is not moving out through the louvers, interchange any two of the three customer power leads on three-phase units only.

GENERAL

INSTALLATION

Figure 1

Weight (Lbs.) Heater and Brackets Heater Ceiling Wall Model Weight Weight Ft./Lbs.

LUH-02 through LUH-05 33-3/4 38-1/4 48 LUH-07 through LUH-15 55 67-1/4 112 LUH-20 through LUH-25 78 90-1/4 150 LUH-30 through LUH-45 117 141-1/4 400

Exposed

Wall

One 11/16" mounting hole for swivel mounting for ceiling

W = Minimum Distance to Wall for Full 180˚ Swivel

Dimensions (In.)

Bracket

Model Wt. Use

No. A B C M N U V W (Lbs.) With

WUH-04A 16 13-1/8 8-7/8 6 4-7/16 4 4-1/2 10-1/2 3

LUH-02

04, 05

WUH-05 20-1/2 17-1/4 11-1/2 8 6-1/4 6 7-1/4 16 5-1/2

LUH-07

10, 12, 15

WUH-05 24 20-1/8 11-1/2 8 6-1/4 6 7-1/4 16 5-1/2 LUH-20, 25

WUH-06 24 20-1/8 17 13-3/4 10 6 7-1/4 21 11

LUH-30

35, 40, 45

S I D E

W A L L

BACK WALL

Threaded Mounting Holes

Figure 3 Wall and Ceiling Clearance (Table 2)

INSTALLATION

Figure 4

Optional Ceiling Swivel Mounting Bracket

Chromalox

Note:

Dimensions - (In.)

Bracket Bracket

Model Weight Use

Number P Q R S T (Lbs.) With

WUH-01A 1-3/4 21-1/2 6-3/4 5-1/2 14-15/16 4-1/2

LUH-02

04, 05

WUH-02 2 28-7/16 9-1/2 8-3/8 22-1/4 12-1/4

LUH-07

10, 12, 15

WUH-02 2 28-7/16 9-1/2 8-3/8 22-1/4 12-1/4 LUH-20, 25

WUH-03 5-1/2 28-11/16 5 3-1/2 33-1/4 24-1/4

LUH-30,

35, 40, 45

Figure 5

Optional Wall Swivel Mounting Bracket

Figure 6

Heater Back View

1/2"

Knockouts

Knockout Sizes

LUH-02 - LUH-05 3/4” (1) LUH-07 - LUH-15 1” (1) LUH-20 - LUH-25 3/4”, 1”, 1-1/4”(1) LUH-30 - LUH-45 3/4”, 1”, 1-1/4”(1)

Figure 2 Rod Spacing

Rod

Dimensions (In.)

Unit Thread

IG L X

Type

2 - 5kW 5/16 - 18 4-1/2 5-1/2 2-3/4 2-1/4 7-1/2 - 15kW 3/8 - 16 6-1/4 8-1/4 4-1/8 3-1/8 20 - 25kW 3/8 - 16 6-1/4 8-1/4 4-1/8 3-1/8 30 - 45kW 3/8 - 16 11-3/4 8-1/4 4-1/8 5-7/8

Table 4 — Rod Thread Type and Spacing Dimensions (In.) for

Horizontal Discharge

WIRING

ELECTRIC SHOCK HAZARD. Disconnect all power before installing or servicing heater. Failure to do so could result in personal injury or property damage. Heater must be installed by a qualified person in accordance with the National Electrical Code, NFPA 70.

ELECTRIC SHOCK HAZARD. Any installation involving electric heaters must be performed by a qualified person and must be effectively grounded in accordance with the National Electrical Code to eliminate shock hazard.

1. Use heater only on the voltage and frequency specified on the

nameplate.

2. All wiring should be done in accordance with local codes and

the National Electrical Code by a qualified person as defined in the NEC.

3. Two knockouts are provided on the back of the heater for wire

entry. See Figure 6 for location of knockouts.

4. Branch circuit wire for connection to heater must be at least

60°C wire.

5. The bottom access door is hinged. There is one screw that must

be loosened to gain access (Figure 3). This screw is the captive type; do not try to remove it.

6. A ground terminal is provided near the power terminal board.

The ground wire should be connected before other connections are made.

7. Stripped wire leads are supplied to be connected to accept the

correct size power supply wire. Copper wire rated at 600V and 60°C is satisfactory for the heater branch circuit.

8. Electrical accessories, either kits or factory-installed options, are

shown connected by a dash line on the heater wiring diagram.

9. Wiring connections are to be made on designated wire leads as

shown in the wiring diagrams located inside the access door.

POWER DISCONNECT SWITCH (Available as a kit or factory installed option.) This switch (Figure 7) disconnects the power to the power leads when the handle is placed in its off position.

1. Use copper conductor supply wire only when connecting to

the power line.

2. Connection to the switch pigtails should be made with com-

pression connectors and the joint should be then well insulated.

3. Consult the local wiring code in your area.

SUMMER FAN SWITCH (MOUNTED ON FRONT OF

HEATER). When the switch handle is pointing toward the “SUMMER” position, the fan will run continuously. When the switch handle is pointing toward the “WINTER” position, the fan will run only when the heating elements are hot. REMOTE FAN SWITCH (MANUAL SWITCH-LINE VOLTAGE). 480V requires an additional relay. The wall switch is packed in the wiring compartment.

The remote fan switch is mounted external and remote from the LUH unit heater. The voltage of the remote fan switch is the same as the supply voltage to the LUH heater.

1. Use 14 gauge copper, NEC Class 1, 600V rated insulated wire.

Wiring must meet all Local and NEC requirements for 480V service.

2. Install the remote fan switch in standard wall box in any con-

venient location that is protected from traffic or other accidental damage.

3. Connect the 14 gauge copper field wire to the switch lead

wires with suitable connectors.

REMOTE FAN SWITCH (USED WITH 24 or 120-VOLT RELAY) (Available as a kit or factory installed option). The wall switch is packed in the wiring compartment.

1. Use 18 gauge (min.) NEC Class 1, 600V wiring that meets all

Local and NEC requirements.

2. Install the wall switch in a standard wall box in any convenient

location that is protected from traffic or other accidental damage.

3. Connect the field wire to the switch lead wires with suitable

connectors.

OPTIONAL THERMOSTAT (LUH-TK)

Heaters can be equipped with an optional thermostat of the Bulb and Capillary type for automatic temperature control (Figure

8). The thermostat controls the heating elements and fan simultaneously to achieve set temperature.

The “Lo” setting of the thermostat is approximately 40°F, and the “Hi” setting is approximately 90°F.

CONTROL VOLTAGE WIRING - EXTERNAL REMOTE THERMOSTATS AND FAN SWITCHES

ELECTRIC SHOCK HAZARD. Line voltage is present on some of the terminals. Always disconnect the power from the heater before making any connections.

1. Use 600V, NEC Class 1 insulated wiring with a minimum

gauge of 18 for thermostats and a minimum gauge of 14 for line voltage motor switch (remote fan switch without relay).

2. The thermostat should be located in the area to be heated on

an inside wall. The thermostat should not be exposed to drafts, sunlight, radiation from hot objects, or in a direct line with the discharge from the unit heater.

3. Install the thermostat approximately 5 feet above the floor

line.

4. Install the remote fan switch in any convenient location that is

protected from traffic or likely accidental damage.

5. Internal optional controls are shown on the unit heater wiring

diagrams by a dash line.

Use wiring diagrams as listed for model number on (A through X), pages 5, 6 and 9.

For installation and optional control kits, refer to instruction sheets listed on page 8.

Chromalox

Figure 8 — Thermostat Location, Front View

Power Disconnect Switch

See Notes

Contactor

To Power Supply

See Note 2

Notes:

1. This illustration shows wiring hook up for three phase service. Remove lead wires marked L2 and S2 when using single phase power service.

2. For units without contactors, disconnect switch is to be wired to lead wires on heater power.

3. Use copper supply wire only with this switch.

Figure 7

Power Disconnect Switch Wiring Diagram

15/16”

WIRING DIAGRAMS

T1 T2 T3

L1 L 2 L 3

3 Phase Delta

L1 L3

1 Phase 2 Or 3 Elem

MOTOR

1O OR 3O

T2 T3

Power 60 HZ

To Element Wiring

3O Wiring Only

Cutout

XFMR

Optional Thermostat Built-in Or Field Installed

Optional Disconnect Switch

Built-in Or Field Installed

Transformer Color Code Index

PRI. VOLT.

PRI. XFMR

LEAD CLRS.

120V SEC.

LEAD CLRS.

24V SEC.

LEAD CLRS.

208

240

277

480

BLK

RED

ORG

BRN

BLK/RED

BLK

WHT

YEL

BLU

30-00,32-00 30-40,32-40

Field Wiring Built-in Or Field Installed Factory Wiring

Figure A

L1 L 3

1 Phase 2 Or 3 Elem

T1 T2 T3

Motor

1Ø Or 3Ø

Standard Motor Connection

Motor

1Ø Or 3Ø

T2 T3

Power 60 HZ

To Element Wiring

Optional Summer Fan Switch Built-in Or Field Installed

3Ø Wiring Only

Cutout

XFMR

Optional Thermostat

Built-in Or Field Installed

3Ø Wiring Only

Optional Disconnect Switch

Built-in Or Field Installed

Transformer Color Code Index

PRI. VOLT.

PRI. XFMR

LEAD CLRS.

120V SEC.

LEAD CLRS.

24V SEC.

LEAD CLRS.

208

240

277

BLK

RED

ORG

BRN

BLK

WHT

YEL

BLU

30-41,32-41 30-42,32-42 30-44,32-44

T1 T2 T3

L1 L 2 L 3

3 Phase Delta

Field Wiring Built-in Or Field Installed Factory Wiring

Figure B

L1 L 3

1 Phase 2 Or 3 Elem

Transformer Color Code Index

30-45, 32-45 30-43, 32-43

Motor

1O Or 3O

T2 T3

L1 L2

Power 60 HZ

To Element

Wiring

3O Wiring Only

Cutout

Optional

Thermostat

Built-in Or Field Installed

Optional Disconnect Switch Built-in Or Field Installed

T1 T2 T3

Motor

1O Or 3O

Standard Motor Connection

Optional Summer

Fan Switch

Built-in Or

Field Installed

Optional Fan Relay Built-in Or Field Installed

PRI. VOLT.

PRI. XFMR

LEAD CLRS.

120V SEC.

LEAD CLRS.

24V SEC.

LEAD CLRS.

208

240

277

480

BLK

RED

ORG

BRN

BLK/RED

BLK

WHT

YEL

BLU

T1 T2 T3

3 Phase Delta

Field Wiring Built-in Or Field Installed Factory Wiring

L1 L 2 L 3

Figure C

L1 L 3

1 Phase 2 Or 3 Elem

T1 T2 T3

Motor

1Ø Or 3Ø

Standard Motor Connection

Motor

1Ø Or 3Ø

T2 T3

Power 60 HZ

To Element Wiring

Optional Summer Fan Switch Built-in Or Field Installed

3Ø Wiring Only

Optional Disconnect Switch

Built-in Or Field Installed

Cutout

Field Installed Built-in Or Field Installed Factory Wiring

Optional

Thermostat

Built-in Or Field Installed

31-41,33-41 31-42,33-42 31-44,33-44

Control

Power

By Others

Note: 480V Heaters Require Fan Relay For 480V Motor (See Fig. F)

T1 T2 T3

3 Phase Delta

L1 L 2 L 3

Figure E

L1 L 3

1 Phase 2 Or 3 Elem

Motor

1Ø

T2 T3

Power 60 HZ

To Element Wiring

3Ø Wiring Only

Cutout

Optional

Thermostat

Built-in Or

Field Installed

Optional Disconnect Switch

Built-in Or Field Installed

34-00,35-00 34-40,35-40

Field Installed Built-in Or Field Installed Factory Wiring

T1 T2 T3

3 Phase Delta

L1 L 2 L 3

Figure G

L1 L 3

1 Phase 2 Or 3 Elem

Motor

T2 T3

Power 60 HZ

To Element Wiring

3Ø Wiring Only

Cutout

Field Installed Built-in Or Field Installed Factory Wiring

Optional

Thermostat

Built-in Or

Field Installed

Optional Disconnect Switch

Built-in Or Field Installed

31-00,33-00 31-40,33-40

Control

Power

By Others

T1 T2 T3

3 Phase Delta

L1 L 2 L 3

Figure D

L1 L 3

1 Phase 2 Or 3 Elem

Motor

1O Or 3O

T2 T3

L1 L2

Power 60 HZ

To Element Wiring

3O Wiring Only

Cutout

Optional

Thermostat

Built-in Or

Field Installed

Optional Disconnect Switch

Built-in Or Field Installed

T1 T2 T3

Motor

1O Or 3O

Standard Motor Connection

Optional

Summer

Fan Switch

Built-in Or

Field Installed

Optional

Fan Relay

Built-in Or

Field

Installed

Control Power

(By Others)

31-43,33-43 31-45,33-45

T2 T3

T1 T2 T3

3 Phase Delta

L1 L 2 L 3

Field Installed Built-in Or Field Installed Factory Wiring

Figure F

L1 L 3

1 Phase 2 Or 3 Elem

T1 T2 T3

Motor

1Ø Or 3Ø

Standard Motor Connection

Motor

1Ø Or 3Ø

T2 T3

Power 60 HZ

To Element Wiring

Optional Summer Fan Switch Built-in Or Field Installed

3Ø Wiring Only

Optional Disconnect Switch Built-in Or Field Installed

Cutout

Optional Thermostat

Built-in Or Field Installed

34-41,35-41 34-42,35-42 34-44,35-44

Field Installed Built-in Or Field Installed Factory Wiring

T1 T2 T3

3 Phase Delta

L1 L 2 L 3

Figure H

WIRING DIAGRAMS

L1 L 3

1 Phase 2 Or 3 Elem

Optional

Thermostat

Built-in Or

Field Installed

Optional Disconnect Switch Built-in Or Field Installed

T1 T2 T3

Motor

1Ø Or 3Ø

Standard Motor Connection

Optional Summer Fan Switch Built-in Or Field Installed

Motor

1Ø Or 3Ø

T2 T3

L1 L2

Power 60 HZ

To Element Wiring

3Ø Wiring Only

Cutout

Optional

Fan Relay

Built-in Or

Field

Installed

34-43,35-43 34-45,35-45

T2 T3

Field Installed Built-in Or Field Installed Factory Wiring

T1 T2 T3

3 Phase Delta

L1 L 2 L 3

Figure I

L2 L1

Contactor (Typ.)

Fuses

(When Req'd)

T1 T2 T3

AL3

AL2

AL1

BL1

BL2

BL3

3 Phase,

60 HZ Power

T3T2T1

Stage 2

Elements

Fuses

KTK-3

Motor

Stage 1

Elements

Cutouts

XFMR

X1 X2

Optional Disconnect

Switch Built-in Or

Field Installed

Optional

Thermostat

Built-in Or Field Installed

Built-in Or Field Installed Factory Wiring

Transformer Color Code Index

30-00, 32-00 30-40, 32-40

PRI. VOLT.

PRI. XFMR

LEAD CLRS.

120V SEC.

LEAD CLRS.

24V SEC.

LEAD CLRS.

208

240

480

BLK

RED

ORG

BLK/RED

BLK

WHT

YEL

BLU

Field Installed

Figure J

Contactor

(Typ.)

Fuses

(When Req'd)

AL3

AL2

AL1

BL1

BL2

BL3

Optional Summer Fan Switch Built-in Or Field Installed

Stage 2

Elements

Motor

3Ø

Cutouts

XFMR

Optional Disconnect Switch Built-in Or Field Installed

PRI.

VOLT

PRI.

LEAD

XFMR

CLRS

120V

LEAD

SEC.

CLRS.

24V

LEAD

SEC.

CLRS.

BLK

208

240

Transformer Color Code Index

30-41, 30-42, 30-44 32-41, 30-42, 32-44

RED

ORG

BLK

WHT

YEL

BLU

T3T2T1

T3T2

L2 L3

Stage 1

Elements

Motor

3Ø

3 Phase,

60 HZ Power

Optional Thermostat Built-in Or Field Installed

T1T2

To Elements

Stage 1

To Elements

Stage 2

Standard Motor Connection

Built-in Or Field Installed Factory Wiring

Fuses KTK-3

Note: Heater requires Fan Relay for 480V Motors. (See Figure L)

Figure K

L2 L1

Contactor (Typ.)

Fuses

(When Req'd)

T1 T2 T3

AL3

AL2

AL1

BL1

BL2

BL3

3 Phase,

60 HZ Power

T3T2T1

Stage 2

Elements

Fuses

KTK-3

Motor

3Ø

Stage 1

Elements

Cutouts

Optional Disconnect

Switch Built-in Or

Field Installed

31-00, 33-00 31-40, 33-40

C3 C2

Control Power

(By Others)

Optional Thermostat Built-in Or Field Installed

Field Installed Built-in Or Field Installed Factory Wiring

Figure M

Field Installed Built-in Or Field Installed Factory Wiring

Stage 2

Elements

Motor

3Ø

Stage 1

Elements

Contactor

T1T2T3

Fuses KTK-3

Fuses

(When Req'd)

BL1

BL2

BL3

L2L1 L3

3 Phase

60 HZ Power

AL1

AL2

AL3

31-43,33-43 31-45,33-45

Fan Relay

Optional Disconnect

Switch Built-in Or

Field Installed

For Use With 480V

Cutouts

Control Power

(By Others)

Optional Thermostat Built-in Or Field Installed (Single Stage)

Contactor

Summer Fan Switch

Motor

3Ø

T1T2T3

Contactor

Standard Motor Connection

Figure O

Field Wiring Built-in Or Field Installed Factory Wiring

Stage 2

Elements

Motor

3Ø

Stage 1

Elements

Contactor

T1T2T3

Fuses KTK-3

Fuses

(When Req'd)

BL1

BL2

BL3

L2L1 L3

3 Phase

60 HZ Power

AL1

AL2

AL3

30-43,32-43 30-45,32-45

Fan Relay

Optional Disconnect Switch Built-in Or Field Installed

For Use With 480V

Cutouts

Optional Thermostat Built-in Or Field Installed

Contactor

Summer Fan Switch

Motor

3Ø

T1T2T3

Contactor

Standard Motor Connection

Transformer Color Code Index

XFMR

PRI. VOLT.

PRI. XFMR

LEAD CLRS.

120V SEC.

LEAD CLRS.

24V SEC.

LEAD CLRS.

208

240

480

BLK

RED

ORG

BLK/RED

BLK

WHT

YEL

BLU

Figure L

Contactor

(Typ.)

Fuses

(When Req'd)

AL3

AL2

AL1

BL1

BL2

BL3

Optional Summer Fan Switch Built-in Or Field Installed

Stage 2

Elements

Cutouts

Optional Disconnect Switch Built-in Or Field Installed

31-41, 33-41 31-44, 33-44

T3T2T1

L2 L3

Stage 1

Elements

Motor

3Ø

3 Phase,

60 HZ Power

Motor

3Ø

To Elements

Stage 1

To Elements

Stage 2

Standard Motor

Connection

Optional Thermostat Built-in Or Field Installed

Note: Heater Requires Fan Relay For 480V Motors (See Fig. O)

Fuses KTK-3

Field Wiring Built-in Or Field Installed Factory Wiring

Control Power

(By Others)

Figure N

C2C1

Contactor (Typ.)

Fuses

(When Req'd)

Fused Switch

(By Others)

AL3

AL2

AL1

3 Phase,

60 HZ Power

Stage 2

Elements

Fuses KTK-3

Motor

3Ø

Stage 1

Elements

Cutouts

2 Stage Thermostat

(By Others)

34-00, 35-00, 34-40, 35-40

Customer Wiring

Factory Wiring

Stage 1

Stage 2

BL3

BL2

BL1

3 Phase,

60 HZ Power

Warning - First Stage Of Thermostat Must Be Connected To Terminals C1 & C2 To Insure That Motor Will Be Energized With First Stage Heat Operation

Alternate

1 Stage Thermostat (by Others)

Figure P

L U H D

7 8

MANUFACTURER PART NUMBER BREAKDOWN

FOR MADE TO ORDER UNITS

(LOCATED ON UNIT NAMEPLATE)

RENEWAL PARTS IDENTIFICATION

Element Motor Fan

Code kW Volts Phase Part No. Part No. Part No.

02-81 2.67 208 1 118-303160-001 (2) 193-302912-001 112-302997-001 02-21 2.67 208/240 1 118-303160-002 (2) 193-302912-001 112-302997-001 02-71 2.67 277 1 118-303160-003 (2) 193-302120-001 112-130367-001 04-81 4 208 1 118-303160-001 (3) 193-302912-001 112-302997-001 04-83 4 208 3 118-303160-001 (3) 193-302912-001 112-302997-001 04-21 3/4 208/240 1 118-303160-002 (3) 193-302912-001 112-302997-001 04-23 3/4 208/240 3 118-303160-002 (3) 193-302912-001 112-302997-001 04-71 4 277 1 118-303160-003 (3) 193-302120-001 112-130367-001 04-43 4 480 3 118-303160-004 (3) 193-302912-003 112-302997-001 05-81 5 208 1 118-303160-005 (3) 193-302912-001 112-302997-001 05-83 5 208 3 118-303160-005 (3) 193-302912-001 112-302997-001 05-21 3.75/5 208/240 1 118-303160-006 (3) 193-302912-001 112-302997-001 05-23 3.75/5 208/240 3 118-303160-006 (3) 193-302912-001 112-302997-001 05-71 5 277 1 118-303160-007 (3) 193-302120-001 112-130367-001 05-43 5 480 3 118-303160-008 (3) 193-302912-003 112-302997-001 07-81 7.5 208 1 118-303170-005 (3) 193-302912-004 112-130367-007 07-83 7.5 208 3 118-303170-005 (3) 193-302912-004 112-130367-007 07-21 5.6/7.5 208/240 1 118-303170-001 (3) 193-302912-004 112-130367-007 07-23 5.6/7.5 208/240 3 118-303170-001 (3) 193-302912-004 112-130367-007 07-71 7.5 277 1 118-303170-006 (3) 193-302120-004 112-130367-007 07-43 7.5 480 3 118-303170-004 (3) 193-302912-005 112-130367-007 10-81 10 208 1 118-303169-001 (3) 193-302912-004 112-130367-002 10-83 10 208 3 118-303169-001 (3) 193-302912-004 112-130367-002 10-21 7.5/10 208/240 1 118-303169-002 (3) 193-302912-004 112-130367-002 10-23 7.5/10 208/240 3 118-303169-002 (3) 193-302912-004 112-130367-002 10-43 10 480 3 118-303169-003 (3) 193-302912-005 112-130367-002 12-83 12.5 208 3 118-303169-004 (3) 193-302912-004 112-130367-002 12-23 9.4/12.5 208/240 3 118-303169-005 (3) 193-302912-004 112-130367-002 12-43 12.5 480 3 118-303169-006 (3) 193-302912-005 112-130367-002 15-83 15 208 3 118-303169-007 (3) 193-302912-004 112-130367-002 15-23 11.2/15 208/240 3 118-303169-008 (3) 193-302912-004 112-130367-002 15-43 15 480 3 118-303169-009 (3) 193-302912-005 112-130367-002 20-23 15/20 208/240 3 118-130419-010 (3) 193-302120-005 112-130367-003 20-43 20 480 3 118-130419-011 (3) 193-302120-005 112-130367-003 25-43 25 480 3 118-130419-012 (3) 193-302120-005 112-130367-003 30-83 30 208 3 118-130384-013 (6) 193-302120-005 112-130367-004 30-23 22.5/30 208/240 3 118-130384-014 (6) 193-302120-005 112-130367-004 30-43 30 480 3 118-130384-015 (6) 193-302120-005 112-130367-004 35-23 26.2/35 208/240 3 118-130384-021 (6) 193-302120-005 112-130367-004 35-43 35 480 3 118-130384-016 (6) 193-302120-005 112-130367-004 40-23 30/40 208/240 3 118-130384-022 (6) 193-302120-005 112-130367-004 40-43 40 480 3 118-130384-017 (6) 193-302120-005 112-130367-004 45-43 45 480 3 118-130384-018 (6) 193-302120-005 112-130367-004

Note: Number in parentheses () in the Part Number Column indicates

the quantity of that part required.

Heater Wiring

Code Description Line Volts Part No. Figure

00-40 Thermostat DP All 300-049197-004 30-00 Contactor ( 24 V) 30A All 072-303180-001

Contactor ( 24 V) 50A All 072-303180-002 A, J, S Transformer All 315-304252-002

30-40 Contactor ( 24 V) 30A All 072-303180-001

Contactor ( 24 V) 50A All 072-303180-002 A, J Transformer All 315-304252-002 Thermostat SP All 300-049197-003

30-41 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 Transformer All 315-304252-002 B, K Thermostat SP All 300-049197-003 Fan Switch 3PDT All 292-057673-001

30-42 Contactor (24V) 30A All 072-303180-001

Contactor(24V) 50A All 072-303180-002 B, K Transformer All 315-304252-002 Remote Fan Switch 3PDT All 292-057673-001

30-43 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 Transformer All 315-304252-002 C, L, T Fan Relay 2.6-5kW 072-303180-011 Fan Relay 7.5-45kW 072-303180-001 Remote Fan Switch 3PDT All 292-057673-001

30-44 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 Transformer All 315-304252-002 B, K Remote Fan Switch 3PDT All 292-057673-001 Thermostat SP All 300-049197-003

30-45 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 Transformer All 315-304252-002 C, L Remote Fan Switch 3PDT All 292-057673-001 Fan Relay 2.6-5kW 072-303180-011 Fan Relay 7.5-45kW 072-303180-001 Thermostat SP All 300-049197-003

31-00 Contactor (24V) 30A All 072-303180-001 D, M, U

Contactor (24V) 50A All 072-303180-002

31-40 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 D, M Thermostat SP All 300-049197-003

31-41 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 E, N Thermostat SP All 300-049197-003 Fan Switch 3PDT All 292-057673-001

31-42 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 E, N, V Remote Fan Switch 3PDT All 292-057673-001

31-43 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 F, O, R Fan Relay 2.6-5kW 072-303180-011 Fan Relay 7.5-45kW 072-303180-001 Remote Fan Switch 3PDT All 292-057673-001

31-44 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 E, N Remote Fan Switch 3PDT All 292-057673-001 Thermostat SP All 300-049197-003

31-45 Contactor (24V) 30A All 072-303180-001

Contactor (24V) 50A All 072-303180-002 Fan Relay All 072-303180-001 F, O Fan Relay 7.5-45kW 072-303180-011 Remote Fan Switch 3PDT All 292-057673-001 Thermostat SP All 300-049197-003

32-00 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 A, J, S Transformer All 315-304252-001

32-40 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 A, J Transformer All 315-304252-001 Thermostat SP All 300-049197-003

32-41 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 Transformer All 315-304252-001 B, K Thermostat SP All 300-049197-003 Fan Switch 3PDT All 292-057673-001

32-42 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 B, K Transformer All 315-304252-001 Remote Fan Switch 3PDT All 292-057673-001

32-43 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 Transformer All 315-304252-001 C, L, T Fan Relay 2.6-5kW 072-303180-011 Fan Relay 7.5-45kW 072-303180-001 Remote Fan Switch 3PDT All 292-057673-001

32-44 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 Transformer All 315-304252-001 B, K Remote Fan Switch All 292-057673-001 Thermostat SP All 300-049197-003

Heater Wiring

Code Description Line Volts Part No. Figure

32-45 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 Transformer All 315-304252-001 C, L Fan Relay 2.6-5kW 072-303180-011 Fan Relay 7.5-45kW 072-303180-007 Remote Fan Switch 3PDT All 292-057673-001 Thermostat SP All 300-049197-003

33-00 Contactor (120) 30A All 072-303180-007 D, M, U

Contactor (120) 50A All 072-303180-008

33-40 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 D, M Thermostat SP All 300-049197-003

33-41 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 E, N Fan Switch 3PDT All 292-057673-001 Thermostat SP All 300-049197-003

33-42 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-007 E, N, V Remote Fan Switch 3PDT All 292-057673-001

33-43 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 F, O, R Fan Relay 2.6-5kW 072-303180-011 Fan Relay (120V) 7.5-45kW 072-303180-007 Remote Fan Switch 3PDT All 292-057673-001

33-44 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-007 E, N Remote Fan Switch 3PDT All 292-057673-001 Thermostat SP All 300-049197-003

33-45 Contactor (120) 30A All 072-303180-007

Contactor (120) 50A All 072-303180-008 Fan Relay 2.6-5kW 072-303180-011 Fan Relay 7.5-45kW 072-303180-007 F, O Remote Fan Switch 3PDT All 292-057673-001 Thermostat SP All 300-049197-003

34-00 Contactor (208/240) 30A 208/240 072-303180-013 G, P

Contactor (208/240) 50A 208/240 072-303180-014

34-40 Contactor (208/240) 30A 208/240 072-303180-013

Contactor (208/240) 50A 208/240 072-303180-014 G, P Thermostat SP 208/240 300-049197-003

34-41 Contactor (208/240) 30A 208/240 072-303180-013

Contactor (208/240) 50A 208/240 072-303180-014 H, Q Fan Switch 3PDT 208/240 292-057673-001 Thermostat SP 208/240 300-049197-003

34-42 Contactor (208/240) 30A 208/240 072-303180-013

Contactor (208/240) 50A 208/240 072-303180-014 H, Q Remote Fan Switch 3PDT 208/240 292-057673-001

34-43 Contactor (208/240) 30A 208/240 072-303180-013

Contactor (208/240) 50A 208/240 072-303180-014 I, R, V Fan Relay 208/240 072-303180-013 Remote Fan Switch 3PDT 208/240 292-057673-001

34-44 Contactor (208/240) 30A 208/240 072-303180-013

Contactor (208/240) 50A 208/240 072-303180-014 H, Q Remote Fan Switch 3PDT 208/240 292-057673-001 Thermostat SP 208/240 300-049197-003

34-45 Contactor (208/240) 30A 208/240 072-303180-013

Contactor (208/240) 50A 208/240 072-303180-014 Fan Relay 208/240 072-303180-013 I, R, V Remote Fan Switch 3PDT 208/240 292-057673-001 Thermostat SP 208/240 300-049197-003

35-00 Contactor (277) 30A 277 072-303180-019 G

Contactor (277) 50A 277 072-303180-020

35-40 Contactor (277) 30A 277 072-303180-019

Contactor (277) 50A 277 072-303180-020 G Thermostat SP 277 300-049197-003

35-41 Contactor (277) 30A 277 072-303180-019

Contactor (277) 50A 277 072-303180-020 H Fan Switch 3PDT 277 292-057673-001 Thermostat SP 277 300-049197-003

35-42 Contactor (277) 30A 277 072-303180-019

Contactor (277) 50A 277 072-303180-020 H Remote Fan Switch 3PDT 277 292-057673-001

35-43 Contactor (277) 30A 277 072-303180-019

Contactor (277) 50A 277 072-303180-020 I Fan Relay 277 072-303180-019 Remote Fan Switch 3PDT 277 292-057673-001

35-44 Contactor (277) 30A 277 072-303180-019

Contactor (277) 50A 277 072-303180-020 H Remote Fan Switch 3PDT 277 292-057673-001 Thermostat SP 277 300-049197-003

35-45 Contactor (277) 30A 277 072-303180-019

Contactor (277) 50A 277 072-303180-020 Fan Relay 277 072-303180-019 I Remote Fan Switch 3PDT 277 292-057673-001 Thermostat SP 277 300-049197-003

Code Disconnect Disconnect

Rating Part No.

1 40A 292-303472-001 2 80A 292-303472-002 3 100A 292-303472-003

Miscellaneous Parts

Thermostat Knob 169-049278-001 Mod. Decal Card 170-303678-001

Code Description Part No.

45-53 Fuse Block 600V 129-025643-001 (2)

“30-83, 30-23, 35-23, 40-23” Fuse Block 250V 129-048473-001

“30-83, 35-23, 40-23” Fuse 60 Amp 128-026510-007 (6)

30-23 Fuse 50 Amp 128-026510-006 (6) 45-43 Fuse 35 Amp 128-026510-001 (6)

Power Fuses (Used when heater exceeds 48 Amps)

For Contactor Rating, refer to Specification Table shown on Page 1.

Instruction Sheets

1. Internal Thermostat PF-448

2. Internal/External Summer Fan Switch PF-480

3. Internal/External Summer Fan Switch with Relay PF-481

4. Disconnect Switch PF-482

Part Number

Description 2-5kW 7.5-15kW 20-25kW 30-45kW

Louver 182-130329-001 (4) 182-130329-002 (5) 182-130329-003 (6) 182-130329-003 (6) Louver spring 276-130368-001 (4) 276-130368-001 (5) 276-130368-001 (6) 276-130368-001 (6) Cut-Out 300-049200-001 300-049200-001 300-049200-001 300-049200-001 Case Front 043-130336-014 043-130335-011 043-130334-008 043-130334-008 Case Back 043-130379-028 043-130379-031 043-130379-033 043-130379-033 Case Wrapper

043-130314-005 043-130315-004 043-130316-004 043-130317-004

W/O Fuse Door Case Wrapper

043-130317-005

With Fuse Door

WIRING DIAGRAMS

Field Installed Built-in Or Field Installed Factory Wiring

Stage 2

Elements

Motor

3Ø

Stage 1

Elements

Contactor

T1T2T3

Fuses KTK-3

Fuses

(When Req'd)

BL1

BL2

BL3

L2L1 L3

3 Phase

60 HZ Power

AL1

AL2

AL3

34-43, 35-43 34-45, 35-45

Fan Relay

Optional Disconnect Switch Built-in Or Field Installed

Not For Use With 480V

Cutouts

Optional Thermostat Built-in Or Field Installed

Contactor

Summer Fan Switch

Motor

3Ø

T1T2T3

Contactor

Standard Motor Connection

Figure R

Contactor

(Typ.)

Fuses

(When Req'd)

AL3

AL2

AL1

BL1

BL2

BL3

Optional Summer Fan Switch Built-in Or Field Installed

Stage 2

Elements

Motor

3Ø

Cutouts

Note: Heater Requires Fan Relay For 480V Motors (See Fig. R)

Optional Disconnect Switch Built-in Or Field Installed

34-41 34-42 34-44

T3T2

L2 L3

Stage 1

Elements

Motor

3Ø

3 Phase,

60 HZ Power

Optional Thermostat Built-in Or Field Installed

T1T2

To Elements

Stage 1

To Elements

Stage 2

Standard Motor Connection

Fuses

KTK-3

T3T2

Field Wiring

Built-in Or Field Installed

Factory Wiring

Figure Q

Field Installed Built-in Or Field Installed Factory Wiring

Transformer

Color Code Index

Stage 2

Elements

MOTOR

3Ø

Stage 1

Elements

Contactors

T1T2T3

C3 C2

Contactor

Cutouts

XFMR

Fan

Stage 1

Stage 2

2 Stage Thermostat (By Others)

Fuses KTK-3

Fuses

(When Req'd)

BL1

BL2

BL3

L2L1 L3

3 Phase

60 Hz Power

AL1

AL2

AL3

Disconnect Switch Built-in Or Field Installed

32-00 30-00

PRI. VOLT.

PRI. XFMR

LEAD CLRS.

120V SEC.

LEAD CLRS.

24V SEC.

LEAD CLRS.

208

240

480

BLK

RED

ORG

BLK/RED

BLK

WHT

YEL

BLU

Warning - First Stage Of Thermostat Must Be Connected To Terminals C1 & C2 To Insure That Motor Will Be Energized With First Stage Heat Operation

Note: For Single Stage Thermostat, See Fig. J

Figure S

Field Installed Built-in Or Field Installed Factory Wiring

Transformer

Color Code Index

Stage 2

Elements

Motor

3Ø

Stage 1

Elements

T1T2T3

Contactor

(Typ.)

XFMR

Stage 1

Fuses

(When Req'd)

BL1

BL2

BL3

3 Phase

60 HZ Power

AL1

AL2

AL3

Disconnect Switch Built-in Or Field Installed

30-43 32-43

Heat

Fan

Stage 2

L1 L2

Fuses KTK-3

2 PDT Switch

(By Others)

2 Stage Thermostat

(By Others)

Cutouts

C1 C4 C2 C3

Jumper

Fan

Heat

Thermostat

Jumpers

Thermostat W/sub-base (By Others)

Alternate Customer Hook Up (1 Stage)

PRI. VOLT.

PRI. XFMR

LEAD CLRS.

120V SEC.

LEAD CLRS.

24V SEC.

LEAD CLRS.

208

240

480

BLK

RED

ORG

BLK/RED

BLK

WHT

YEL

BLU

Warning - First Stage Of Thermostat Must Be Connected To Terminals C1 & C2 To Insure That Motor Will Be Energized With First Stage Heat Operation

Figure T

Contactors

AL3

AL2

AL1

BL1

BL2

BL3

Stage 2

Elements

T3T2T1

Stage 1

Elements

Stage 1

Stage 2

Fan

2 Stage Thermostat (By Others)

Cutouts

Optional Disconnect Switch Built-in Or Field Installed

Fuses

(When Req'd)

Fuses

KTK-3

L2 L3

3 Phase,

60 HZ Power

Field Installed Built-in Or Field Installed Factory Wiring

31-00 33-00

T3T2T1

Warning - First Stage Of Thermostat Must Be Connected To Terminals C1 & C2 To Insure That Motor Will Be Energized With First Stage Heat Operation

Motor

3Ø

Control Power

(By Others)

Note: For Single Stage Thermostat, See Fig. M

Figure U

Field Installed Built-in Or

Field Installed Factory Wiring

Stage 2

Elements

Motor

3Ø

Stage 1

Elements

T1T2 T3

Contactor

(Typ.)

Stage 1

Fuses

(When Req'd)

BL1

BL2

BL3

3 Phase

60 HZ Power

AL1

AL2

AL3

Optional Disconnect Switch Built-in Or Field Installed

34-43 35-43

Heat Fan

Stage 2

L1 L2

Fuses KTK-3

2 PDT Switch

(By Others)

2 Stage Thermostat (By Others)

Cutouts

C1 C4 C2 C3

Jumper

Fan

Heat

Thermostat

Jumpers

Thermostat W/sub-base (By Others)

Alternate Customer Hook Up (1 Stage)

Warning - First Stage Of Thermostat Must Be Connected To Terminals C1 & C2 To Insure That Motor Will Be Energized With First Stage Heat Operation

Fan

Relay

Figure V

Field Installed Built-in Or

Field Installed Factory Wiring

Stage 2

Elements

Motor

3Ø

Stage 1

Elements

T1T2 T3

Contactor

(Typ.)

Stage 1

Fuses

(When Req'd)

BL1

BL2

BL3

3 Phase

60 HZ Power

AL1

AL2

AL3

Optional Disconnect Switch Built-in Or Field Installed

31-45 33-45

Heat

Fan

Stage 2

L1 L2

Fuses KTK-3

2 PDT Switch

(By Others)

2 Stage Thermostat (By Others)

Cutouts

C1 C4 C2 C3

Jumper

Fan

Heat

Thermostat

Jumpers

Thermostat W/sub-base (By Others)

Alternate Customer Hook Up (1 Stage)

Warning - First Stage Of Thermostat Must Be Connected To Terminals C1 & C2 To Insure That Motor Will Be Energized With First Stage Heat Operation

Fan Relay

Control Power

(By Others)

Figure W

Field Installed Built-in Or Field Installed Factory Wiring

Transformer Color Code Index

Stage 2

Elements

Motor

3Ø

Stage 1

Elements

T1T2T3

Contactor

(Typ.)

XFMR

Stage 1

Fuses

(When Req'd)

BL1

BL2

BL3

3 Phase

60 HZ Power

AL1

AL2

AL3

Disconnect Switch Built-in Or Field Installed

30-45 32-45

Heat

Fan

Stage 2

L1 L2

Fuses KTK-3

2 PDT Switch

(By Others)

2 Stage Thermostat (By Others)

Cutouts

C1 C4 C2 C3

Jumper

Fan

Heat

Thermostat

Jumpers

Thermostat

W/sub-base

(By Others)

Alternate Customer Hook Up (1 Stage)

Warning - First Stage Of Thermostat Must Be Connected To Terminals C1 & C2 To Insure That Motor Will Be Energized With First Stage Heat Operation

PRI. VOLT.

PRI. XFMR

LEAD CLRS.

120V SEC.

LEAD CLRS.

24V SEC.

LEAD CLRS.

208

240

480

BLK

RED

ORG

BLK/RED

BLK

WHT

YEL

BLU

Figure X

2150 N. RULON WHITE BLVD., OGDEN, UT 84404 Phone: 1-800-368-2493 www.chromalox.com

Limited Warranty:

Please refer to the Chromalox limited warranty applicable to this product at

http://www.chromalox.com/customer-service/policies/termsofsale.aspx.

Chromalox PF479-6 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual