Chromalox CAF-20215 Instructions d'installation et d'utilisation
(Supersedes PF423-1)
PF494-1
AC
161-506173-001
4
and
Installation, Operation
MAINTENANCE
JULY, 2002
(Supersedes PF494)
CAF-20 Series Architectural Cabinet
Convection Heater
© 2010 Chromalox, Inc.
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
Terminal Box
20
1
1
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
L1
L2
L1
L2
Element
Heater No Controls – 3-Ph Delta
Unit
Control
L1
L2
L3
L2
L1
L3
Return Wires
Return Wire
Element
Heater 2 Pole Stat – 1-Ph Parallel
Unit
Control
Stat
L1
L2
L1
L2
Element
Return Wires
Unit
Control
Stat
Heater 3 Pole Stat – 3-Ph Parallel
L1
L2
L3
L1 L2 L3
Element
Heater LYD Relay – 1-Ph Parallel
Return Wire
Unit
Control
L1 L2
2
T2
T1
Element
Return Wire
Unit
Control
Heater LVC Relay – 1-Ph Parallel
L2 L1
T0
T1
2
Element
Return Wires
Unit
Control
Heater 3 Pole Contactor – 3-Ph Delta
Contactor
T0
T1
L1
L2
L3
24V
Element
Return Wires
Unit
Control
Contactor
Heater 3 Pole Contactor/TX – 3-Ph Delta T0
T1
L1
L2
L3
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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