Chromalox CAF-20215 Istruzioni per l'installazione e il funzionamento

(Supersedes PF423-1)

PF494-1

161-506173-001

and

Installation, Operation

MAINTENANCE

JULY, 2002

(Supersedes PF494)

CAF-20 Series Architectural Cabinet

Convection Heater

TABLE 1— Specifications

Model VoltsPhase WattsAmps BTUH Length Weight (Lbs.)

CAF-20215 208 1 1,500 7.2 5,118 24.3 32

CAF-20215 208 3 1,500 4.2 5,118 24.3 32

CAF-20215 240 1 1,500 6.3 5,118 24.3 32

CAF-20215 240 3 1,500 3.6 5,118 24.3 32

CAF-20215 277 1 1,500 5.4 5,118 24.3 32

CAF-20215 480 1 1,500 3.1 5,118 24.3 32

CAF-20215 480 3 1,500 1.8 5,118 24.3 32

CAF-20220 208 1 2,000 9.6 6,824 24.3 32

CAF-20220 208 3 2,000 5.6 6,824 24.3 32

CAF-20220 240 1 2,000 8.3 6,824 24.3 32

CAF-20220 240 3 2,000 4.8 6,824 24.3 32

CAF-20220 277 1 2,000 7.2 6,824 24.3 32

CAF-20220 480 1 2,000 4.2 6,824 24.3 32

CAF-20220 480 3 2,000 2.4 6,824 24.3 32

CAF-20330 208 1 3,000 14.4 10,236 36.3 43.5

CAF-20330 208 3 3,000 8.3 10,236 36.3 43.5

CAF-20330 240 1 3,000 12.5 10,236 36.3 43.5

CAF-20330 240 3 3,000 7.2 10,236 36.3 43.5

CAF-20330 277 1 3,000 10.8 10,236 36.3 43.5

CAF-20330 480 1 3,000 6.3 10,236 36.3 43.5

CAF-20330 480 3 3,000 3.6 10,236 36.3 43.5

CAF-20430 208 1 3,000 14.4 10,236 48.3 53

CAF-20430 208 3 3,000 8.3 10,236 48.3 53

CAF-20430 240 1 3,000 12.5 10,236 48.3 53

CAF-20430 240 3 3,000 7.2 10,236 48.3 53

CAF-20430 277 1 3,000 10.8 10,236 48.3 53

CAF-20430 480 1 3,000 6.3 10,236 48.3 53

CAF-20430 480 3 3,000 3.6 10,236 48.3 53

CAF-20440 208 1 4,000 19.2 13,648 48.3 53

CAF-20440 208 3 4,000 11.1 13,648 48.3 53

CAF-20440 240 1 4,000 16.7 13,648 48.3 53

CAF-20440 240 3 4,000 9.6 13,648 48.3 53

CAF-20440 277 1 4,000 14.4 13,648 48.3 53

CAF-20440 480 1 4,000 8.3 13,648 48.3 53

CAF-20440 480 3 4,000 4.8 13,648 48.3 53

CAF-20645 208 1 4,500 21.6 15,354 72.3 74

CAF-20645 208 3 4,500 12.5 15,354 72.3 74

CAF-20645 240 1 4,500 18.8 15,354 72.3 74

CAF-20645 240 3 4,500 10.8 15,354 72.3 74

CAF-20645 277 1 4,500 16.2 15,354 72.3 74

CAF-20645 480 1 4,500 9.4 15,354 72.3 74

CAF-20645 480 3 4,500 5.4 15,354 72.3 74

CAF-20550 208 1 5,000 24 17,060 60.3 63.5

CAF-20550 208 3 5,000 13.9 17,060 60.3 63.5

CAF-20550 240 1 5,000 20.8 17,060 60.3 63.5

CAF-20550 240 3 5,000 12 17,060 60.3 63.5

CAF-20550 277 1 5,000 18.1 17,060 60.3 63.5

CAF-20550 480 1 5,000 10.4 17,060 60.3 63.5

CAF-20550 480 3 5,000 6 17,060 60.3 63.5

CAF-20660 208 1 6,000 28.8 20,472 72.3 74

CAF-20660 208 3 6,000 16.7 20,472 72.3 74

CAF-20660 240 1 6,000 25 20,472 72.3 74

CAF-20660 240 3 6,000 14.5 20,472 72.3 74

CAF-20660 277 1 6,000 21.7 20,472 72.3 74

CAF-20660 480 1 6,000 12.5 20,472 72.3 74

CAF-20660 480 3 6,000 7.2 20,472 72.3 74

Length

1-1/2

2Back View

Bottom View

(Front Inlet Version Shown)

2-3/4

Terminal Box

5-3/4

Side View

(Less End Cap)

Figure 1

MODEL NUMBER DESCRIPTION

WARNING: Hazard of Electric Shock. Disconnect all

power before installing heater.

WARNING: Hazard of Electric Shock. Any installa-

tion involving electric heaters must be effectively

grounded in accordance with the National

Electrical Code to eliminate shock hazard.

WARNING: Hazard of Fire.

1. Do not install heaters against any highly com-

bustible surfaces such as low density cellulose

fibre.

2. Do not locate heater below electrical conve-

nience receptacles.

3. Do not store or use gasoline or flammable liq-

uids in the vicinity of the heaters.

WARNING: Hazard of Fire. Keep electrical cords,

drapes, rugs and other furnishings away from the

heater. The normal operating temperatures of cab-

inet convectors are relatively high. Proper opera-

tion requires free circulation of room air through

the heating element.

Installation Wall

1. Unpack the heater from the carton and remove the front panel.

Note: The front panel screws are recessed at the bottom of the

top front panel at each end of the heater. (Figure 2) Remove top

front panel by pulling down to disengage from top of heater. To

remove the bottom front panel, remove screws as shown in

Figure 3. Pull bottom front panel by pulling upward to disen-

gage from bottom of heater.

2. Remove the desired terminal box covers and wire supply

knockouts from the terminal box area.

3. Determine the correct mounting height, and scribe or snap a

level line on the wall to maintain each heater back plate in a

horizontal alignment, when mounting.

4. Mount the back plate to the wall using suitable fasteners (pro-

vided by customer) using the scribed line on the wall to keep

the heater level.

TIP: Should the wall surface be uneven, secure the heater back

panel to the high spots. This will avoid a distorted appearance.

5. Proceed to the wiring instructions.

Recessed Wall

Note: The use of a ALTB Trim kit is strongly recommended when

recessing the heater.

A recess opening dimension of 20-1/2” high and the length of the

heater is required to install this heater.

The heater may be recessed up to a depth of 5-5/8”.

INSTALLATION

Top Panel

Screws

CAF-20 2 20 2101A9

Code Control Options(Factory Installed)

A9 = Built-in DP tamperproof hydraulic thermostat 208 - 480V

A3 = Built-in 3P tamperproof hydraulic thermostat for 3P voltages 208 - 480V

A4 = Built-in 24V low voltage relay for 1P voltages 208 - 480V

A5 = Built-in 24V low voltage relay and transformer for 1P voltages 208 - 480V

A6 = Built-in 24V contactor for 3P voltages 208 - 480V

A7 = Built-in 24V contactor and transformer for 3P voltages 208 - 480V

Painted Anodized

68 = Almond 07 = Bronze

02 = White 10 = Clear

Code Voltage/Phase

21 = 208/1 23 = 208/3 31 = 240/1 41 = 277/1 73 = 480/3

Code Wattage(See Table)

Code Length

2 = 2 ft. 3 = 3 ft. 4 = 4 ft. 5 = 5 ft. 6 = 6 ft.

Type

Architectural Cabinet Convection Heater

TABLE 2

Bottom

Panel

Screws

Figure 2

Figure 3

1. Unpack the heater from the carton and remove the front panel.

Note: The front panel screws are recessed at the bottom of the

front panel at each end of the heater.

2. Remove the desired terminal box covers and wire supply

knockouts from the terminal box area.

3. Use trim frame as a template to drill holes into the top, bottom

and sides of the heater using a 1/8” diameter drill bit.

4. Secure the trim frame using the #8 screws provided with the

trim kit.

TIP: The bottom trim may be omitted if the heater is to be

installed at floor level.

5. Prepare the wall recess opening to accept the heater.

TIP: Leave approximately 1/2” clearance to insert the heater

cabinet.

6. Secure the back plate into the recess opening using suitable

fasteners (Provided by customer).

7. Proceed to the wiring instructions.

INSTALLATION (Recessed Wall)

WIRING

Note: All wiring should be done in accordance with local codes

and the National Electrical Code by a qualified person.

1. Run branch circuit wiring of proper voltage and wire size to the

location of the terminal box of the heater.

TIP: Supply wire entry is commonly made into one heater.

Through wiring (factory furnished) can be used for connection

to adjacent heaters.

Recommended minimum supply wire sizes are listed in the table

below:

2. Wire all heaters and controls in accordance with the appropri-

ate wiring diagram.

TIP: Sample wiring diagrams are provided on page 4.

3. Wrap the supply ground wire to the green painted ground

screw and tighten.

Note: When heaters are mounted end to end, remove the fin-

ishing end plate, install a chase nipple and locknut in the ter-

minal box to insure grounding continuity, and to protect the

wiring. (Figure 4)

Where heaters are spaced apart, remove the finishing plate and use

rigid conduit (provided by customer) for through wiring and

ground continuity. Do not exceed the allowable number of con-

ductors allowed by the National Electrical Code.

4. Do a final and complete check of all wiring then replace the

terminal box covers.

5. The front panel may now be installed.

WARNING: To prevent the risk of fire, do not oper-

ate the heater without the front cover in place.

Insert the top of the front panel into the top flange of the heater.

Push the bottom flange of the front panel into place and secure

with screws.

Maintenance

The CAF-20 series heaters contain no moving parts. Occasional

vacuum cleaning of the cabinet interior is the only maintenance

required.

WARNING: Before removing the front cover for

cleaning, make certain supply power is discon-

nected.

Maximum WattsPer Circuit Using 75°C. Wire

Rough In

Wire Size120V 208V 240V 277V 347V 480V 600V

14 1440 2496 2880 3324 4164 5760 7200

Copper 12 1920 3328 3840 4432 5552 7680 9600

Wire 10 2880 4992 5760 6648 8328 11520 14400

Terminal Box Volumes (Cubic Inches)

Heater StyleLeft HandBox Right HandBox

4” Wide 5” Wide

CAF-20 379.75 474.75

Chase Nipples

Installation Between

Heaters Butted Together

Ground Wire Running

Through Chase Nipple

Figure 4

Figure 5

2150 N. RULON WHITE BLVD., OGDEN, UT 84404

Phone: 1-800-368-2493 www.chromalox.com

WIRING DIAGRAMS

Element

Heater No Controls – 1-Ph Parallel

Return Wire

Unit

Control

Element

Heater No Controls – 3-Ph Delta

Unit

Control

Return Wires

Return Wire

Element

Heater 2 Pole Stat – 1-Ph Parallel

Unit

Control

Stat

Element

Return Wires

Unit

Control

Stat

Heater 3 Pole Stat – 3-Ph Parallel

L1 L2 L3

Element

Heater LYD Relay – 1-Ph Parallel

Return Wire

Unit

Control

L1 L2

Element

Return Wire

Unit

Control

Heater LVC Relay – 1-Ph Parallel

L2 L1

Element

Return Wires

Unit

Control

Heater 3 Pole Contactor – 3-Ph Delta

Contactor

24V

Element

Return Wires

Unit

Control

Contactor

Heater 3 Pole Contactor/TX – 3-Ph Delta T0

24V

Limited Warranty:

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

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

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