Chromalox
®
DIVISION 4 SECTION
CVEP
SALES
REFERENCE
DATE
SERVICE REFERENCE
Installation, Operation
and
RENEWAL PARTS IDENTIFICATION
PF457-8
JUNE, 2010
(Supersedes PF457-7)
161-302639-001
GENERAL
INSTALLATION
NOTICE: Carefully remove heater from carton and check for
shipping damage. Any damage claims should be entered
immediately with the carrier.
Type CVEP Convection Heaters are designed for use in Class
I, Div I hazardous environments. Units without control options
are suitable for areas classified as Groups B, C & D. Units with
built-in controls can be supplied for groups C and D or B, C and
D. Refer to classification stamped on heater nameplate.
FIRE/EXPLOSION HAZARD.
To prevent ignition of hazardous atmospheres, this heater should not be installed in
areas where vapors or gases having an ignition temperature less than 280˚C (536˚F)(T2A) at 1.8kW, 3.6kW, 4.5kW,
7.6kW, 9.0kW or 180˚C (356˚F)(T3A) at 1.6kW, 3.2kW,
4.0kW are present.
These heaters must not be operated in ambient temperatures exceeding 40˚C (104˚F).
1.
Connect air heaters to the same line voltage as on heater nameplate.
2. Heaters can be mounted individually end to end.
3. Heaters can be mounted directly on any type of surface masonry,
concrete, block, plastered walls, metal framework, etc.-using
appropriate hardware.
4. All controls such as thermostat and contactor, when required must
have the same explosion-proof rating as heater.
5. Do not install one unit above the other.
6. Units are mounted a minimum of 8” above the floor.
7. Heaters are mounted on wall in a horizontal position with termi-
nal end at right. Never recess heater into wall.
8. NOTE: Article 500 of the National Electric Code (NEC) out-
lines requirements for installation of electrical equipment in hazardous (Classified) locations.
9. All unit electrical installation fittings, conduit, wiring and seals
must meet NEC and local codes for hazardous locations. External
line fusing or circuit breaker protection is required.
10. Failure to understand and follow these installation instructions
and the “WARNING” notes contained therein may result in
severe personal injury, death or substantial property damage.
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.
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.
1. Remove front panel by removing screws.
2. Locate desired heater position on wall.
3. Locate mounting holes for rear panel. Rear panel must be a mini-
mum of 8” from the floor.
4. Refer to Figure 1A, 1B or 1C for mounting hole layout for each
cabinet size.
5. Drill a pilot hole in wall mounting surface at each mounting hole
location. Use a convenient small size drill.
6. Drill the mounting holes in accordance with size in Table 1. Insert
anchors where applicable.
7. Fasten rear panel to wall with screws noted in Table 1.
8. Replace front panel and screws.
FIRE HAZARD. Never operate heater with front panel
off. Adequate air flow across heating elements
requires the front panel to be in place. The heating
elements could overheat causing equipment damage
or personal injury.
Type CVEP-C
Convection Air Heater for Hazardous Locations
© 2010 Chromalox, Inc.
kW A B C D
1.6
1.8 34 20 7
3.6
3.2
58 32 16 13
7.6
4.0
4.5 70 48 24 11
9.0
10
INSTALLATION
Dimensions (In.)
CVEP MODELS WITHOUT CONTROLS — GROUPS B, C AND D
Dimensions (In.)
CVEP MODELS WITH BUILT-IN CONTROLS — GROUPS B, C AND D
Dimensions (In.)
CVEP MODELS WITH THERMOSTAT ONLY — GROUPS C AND D
2
Type of Mounting ** Accessory Screw Size to Fit
Surface Hardware Screw Type Drill Size and Type Mtg Hole Size
Concrete Block
Ackerman Rd. Hd. Mach. Steel 1/2” Masonry † 1/4” x 20 x.............lg
Masonry
Lead Anchor
Rd. Hd. Mach Steel or Pan Hd.
5/16” Masonry † # 1/4” x .................lg
Metal (Self Tapping)
Wood Studs — — Wood or Metal (Self Tapping) — — † # 1/4” x .................lg
Plaster wall Hollow or
— — Toggle Bolt #7 Twist † # 1/4” x .................lg
Similar Type
* Metal Beam, Nuts
Rd. Hd. Mach. Steel #7 Twist † 1/4” x 20 x.............lg
Channel, etc. Washers
Table 1 — Suggested Heater Mounting Screws — Types and Sizes
*If clearance permits use washer, lockwasher and nut; otherwise drill and tap to these lengths add thickness of beam, washers, nut, etc.
**If mounting structure permits. Except plastered hollow walls explosive type anchors can be used. Suggested size noted in Table and/or
sketches be used to determine size of anchors.
†Select overall length of screw to provide a minimum penetration of 1 inch into base wall material.
1/2
7/8
5/16
Mounting Hole
Detail “A”
Figure 1A
Figure 1B
Figure 1C
kW A B C D
1.6
1.8 34 20 7
3.6
3.2
58 32 16 13
7.6
4.0
4.5 70 48 24 11
9.0
10
kW A B C D
1.6
1.8 34 20 7
3.6
3.2
58 32 16 13
7.6
4.0
4.5 70 48 24 11
9.0
10
7/8
3/4" Conduit Entrance
7
D
See Detail "A"
8-15/16
D
C
C
B
19
20-1/16
A
2-3/8
5-1/16
3-3/8
1" Conduit Entrance
8-7/8
D
See Detail "A"
C
C
D
19
20-1/16
8-15/16
A
B
Feet are Optional
Primarily Used to Protect
Thermowell During Shipping
and Installation
3/4" Conduit Entrance
7
D
See Detai "A"
C
C
D
19
20-1/16
8-15/16
5-1/16
3-3/8
A
2-3/8
WIRING
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. All wiring should be done in accordance with local codes and
the National Electrical Code by a qualified person as defined in
the NEC.
CAUTION: Use copper conductors only.
2. Rough-in-line-wiring to unit in manner approved for hazardous
locations. (See warning below.)
3.
Wire per diagrams 1 through 6 based on the rating and control
options listed in table 2. Refer to table 3 for amperage specifications.
4. Remove cover of conduit box for connections. Use either opening
and plug the other with the plug provided.
5. In single phase units the heaters must be wired in parallel, com-
bining L1 to L1, L2 to L2 and for 3 phase unit, L3 to L3.
6. Re-assemble cover with a minimum of 7 turns.
FIRE/EXPLOSION HAZARD.
(Group B atmospheres)
To prevent ignition of Group B atmospheres, conduit
runs must not exceed 3/4” in size and all conduit
runs 1/2” size and larger must have a sealing fitting
connected within 2”, 6” or 18” of the terminal enclosure depending on the exact model. For correct
placement, refer to data located on the enclosure
label.
OPERATION
The system designer is responsible for the safety
of this equipment and should install adequate
back-up controls and safety devices with their
electric heating equipment. Where the consequences of failure could result in personal injury or
property damage, back-up controls are essential.
1. Do not operate heater at voltages in excess of that stamped on
the heater since excess voltage will shorten heater life and
cause high element temperatures which may exceed allowable
temperatures of operation in a hazardous atmosphere.
3
Elements
Optional Thermostat
Built-In or Ext. Supplied
Single Phase — No Controls, 120-277V
& Heater Amps < 22A
Diagram 1
Diagram 3
Diagram 5
Diagram 2
Diagram 4
Diagram 6
Elements
Optional Thermostat
Built-In or Ext. Supplied
Single Phase — No Controls, Volts > 277V
& 120–277V When Heater Amps > 22A
External
Contactor
Control
Voltage
Elements
Optional Thermostat
Built-In or Ext. Supplied
External
Contactor
Control
Voltage
Three Phase – No Controls
Optional Thermostat
Built-In or Ext. Supplied
Contactor
Transformer
Element Wiring
1 PH or 3 PH
Single or Double
Element
Single or Three Phase
With Controls — Contactor & Transformer
Optional Thermostat
Built-In or Ext. Supplied
Contactor
Line
Voltage
Control
Voltage
Element Wiring
1 PH or 3 PH
Single or Double
Element
Single or Three Phase
With Controls — Contactor & Line Voltage Control
Optional Thermostat
Built-In or Ext. Supplied
Contactor
Element Wiring
1 PH or 3 PH
Single or Double
Element
Single or Three Phase With Controls —
Contactor & External Supplied Control Voltage
Terminal
Block
External
Supplied
Control
Voltage
MAINTENANCE
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.
1. Before activating for next heating season, vacuum or use com-
pressed air to remove accumulated dust or lint, which otherwise
may restrict proper air flow.
2. Periodically check all electrical connections and retighten to avoid
electrical wiring difficulties.
3. Check to ensure terminal cover is tightly closed, before energiz-
ing.
4
Sealed, Heavy duty Finned
Element assembly.
Explosion Proof
Junction Box
for Field wiring
Mounting Holes
ELEMENT REPLACEMENT
ELECTRIC SHOCK HAZARD. Disconnect all power
before installing or servicing heater. Failure to do
so could result in personal injury or property damage.
1. Disconnect power from circuit.
2. Remove cover from junction box and disconnect element wiring.
3. Remove front panel by removing screws.
4. Loosen aluminum coupling connecting element to junction box.
5. Remove screws and bracket holding element end opposite junc-
tion box.
6. Disconnect aluminum coupling connection element to junction
box.
7. Remove element from cabinet.
8. Install element in reverse sequence.
RENEWAL PARTS IDENTIFICATION
MANUFACTURER MODEL NUMBER BREAKDOWN
(located on unit nameplate)
CVEP-C 36 2 1 30 42
5
Model
CVEP Explosion Proof Convection Heater
Temperature Rating
CVEP-C Code kW ID Number ˚F ˚C (BTU)
16 1.6 T3A 356 180 5,500
18 1.8 T2A 536 280 6,150
32 3.2 T3A 356 180 11,000
36 3.6 T2A 536 280 12,300
40 4.0 T3A 356 180 13,600
45 4.5 T2A 536 280 15,350
76 7.6 T2A 536 280 25,930
90 9.0 T2A 536 280 30,700
Code Voltage Maximum kW Allowable
1 120 1.8
2 240 9.0
3 380 9.0
4 480 9.0
5 415 9.0
6 575 9.0
7 277 9.0
8 208 9.0
9 600 9.0
Code Phase
11Ø
3 3Ø (Not available in 120, 277V)
Control Combination
Code Contactor Transformer
Coil Secondary
00 None None
30 24 Volt 24 Volt
31 24 Volt None
32 120 Volt 120 Volt
33 120 Volt None
34 208/240 Volt None
35 277 Volt None
Code Temperature Control
00 None
40 Thermostat 40 - 90˚F
Group B, C & D
42 Thermostat Group C & D
50 - 90˚F
TABLE 2 — TEMPERATURE SPECIFICATIONS
DIMENSIONS REPLACEMENTS ELEMENTS REQUIREMENTS
Temperature Rating T3A 356˚F (180˚C) Common To Units W & W/O Suffix B
kW BTU Volts Phase Amps Model Width A Height B Depth C Wt. (Lbs.) Element P/N Qty.
1.6 5,500 208 1 7.7 CVEP-C-16-81 34” 20-1/16” 8-15/16” 58 003-304650-002 2
1.6 5,500 208 3 4.4 CVEP-C-16-83 34” 20-1/16” 8-15/16” 58 003-304650-005 2
1.6 5,500 240 1 6.7 CVEP-C-16-21 34” 20-1/16” 8-15/16” 58 003-304650-096 2
1.6 5,500 240 3 3.8 CVEP-C-16-23 34” 20-1/16” 8-15/16” 58 003-304650-006 2
1.6 5,500 277 1 5.8 CVEP-C-16-71 34” 20-1/16” 8-15/16” 58 003-304650-004 2
1.6 5,500 480 1 3.3 CVEP-C-16-41 34” 20-1/16” 8-15/16” 58 003-304650-091 2
1.6 5,500 480 3 1.9 CVEP-C-16-43 34” 20-1/16” 8-15/16” 58 003-304650-009 2
1.6 5,500 575 3 1.6 CVEP-C-16-63 34” 20-1/16” 8-15/16” 58 003-304650-010 2
3.2 11,000 208 1 15.4 CVEP-C-32-81 58” 20-1/16” 8-15/16” 94 003-304650-023 2
3.2 11,000 208 3 8.9 CVEP-C-32-83 58” 20-1/16” 8-15/16” 94 003-304650-026 2
3.2 11,000 240 1 13.3 CVEP-C-32-21 58” 20-1/16” 8-15/16” 94 003-304650-097 2
3.2 11,000 240 3 7.7 CVEP-C-32-23 58” 20-1/16” 8-15/16” 94 003-304650-027 2
3.2 11,000 277 1 11.6 CVEP-C-32-71 58” 20-1/16” 8-15/16” 94 003-304650-025 2
3.2 11,000 480 1 6.7 CVEP-C-32-41 58” 20-1/16” 8-15/16” 94 003-304650-093 2
3.2 11,000 480 3 3.8 CVEP-C-32-43 58” 20-1/16” 8-15/16” 94 003-304650-030 2
3.2 11,000 575 3 3.2 CVEP-C-32-63 58” 20-1/16” 8-15/16” 94 003-304650-031 2
4.0 13,600 208 1 19.2 CVEP-C-40-81 70” 20-1/16” 8-15/16” 112 003-304650-045 2
4.0 13,600 208 3 11.1 CVEP-C-40-83 70” 20-1/16” 8-15/16” 112 003-304650-048 2
4.0 13,600 240 1 16.7 CVEP-C-40-21 70” 20-1/16” 8-15/16” 112 003-304650-046 2
4.0 13,600 240 3 9.6 CVEP-C-40-23 70” 20-1/16” 8-15/16” 112 003-304650-049 2
4.0 13,600 277 1 14.4 CVEP-C-40-71 70” 20-1/16” 8-15/16” 112 003-304650-047 2
4.0 13,600 480 1 8.3 CVEP-C-40-41 70” 20-1/16” 8-15/16” 112 003-304650-094 2
4.0 13,600 480 3 4.8 CVEP-C-40-43 70” 20-1/16” 8-15/16” 112 003-304650-052 2
4.0 13,600 575 3 7.0 CVEP-C-40-63 70” 20-1/16” 8-15/16” 112 003-304650-053 2
Temperature Rating T2A 536˚F (280˚C)
kW BTU Volts Phase Amps Model Width A Height B Depth C Wt. (Lbs.) Element P/N Qty.
1.8/3.6 6,150/12,300 208 1 8.7/17.3 CVEP-C-18/36-81 34” 20-1/16” 8-15/16” 46/58 003-304650-034
1 or 2
1.8/3.6 6,150/12,300 208 3 5.0/10.0 CVEP-C-18/36-83 34” 20-1/16” 8-15/16” 46/58 003-304650-038
1 or 2
1.8/3.6 6,150/12,300 240 1 7.5/15.0 CVEP-C-18/36-21 34” 20-1/16” 8-15/16” 46/58 003-304650-098
1 or 2
1.8/3.6 6,150/12,300 240 3 4.3/8.7 CVEP-C-18/36-23 34” 20-1/16” 8-15/16” 46/58 003-304650-039
1 or 2
1.8/3.6 6,150/12,300 277 1 6.5/13.0 CVEP-C-18/36-71 34” 20-1/16” 8-15/16” 46/58 003-304650-036
1 or 2
1.8/3.6 6,150/12,300 480 1 3.8/7.5 CVEP-C-18/36-41 34” 20-1/16” 8-15/16” 46/58 003-304650-037
1 or 2
1.8/3.6 6,150/12,300 480 3 2.2/4.3 CVEP-C-18/36-43 34” 20-1/16” 8-15/16” 46/58 003-304650-042
1 or 2
1.8/3.6 6,150/12,300 575 3 1.8/3.6 CVEP-C-18/36-63 34” 20-1/16” 8-15/16 46/58 003-304650-043
1 or 2
7.6 25,930 208 1 36.5 CVEP-C-76-81 58” 20-1/16” 8-15/16” 94 003-304650-055 2
7.6 25,930 208 3 21.1 CVEP-C-76-83 58” 20-1/16” 8-15/16” 94 003-304650-058 2
7.6 25,930 240 1 31.7 CVEP-C-76-21 58” 20-1/16” 8-15/16” 94 003-304650-099 2
7.6 25,930 240 3 18.3 CVEP-C-76-23 58” 20-1/16” 8-15/16” 94 003-304650-059 2
7.6 25,930 277 1 27.4 CVEP-C-76-71 58” 20-1/16” 8-15/16” 94 003-304650-057 2
7.6 25,930 480 1 15.8 CVEP-C-76-41 58” 20-1/16” 8-15/16” 94 003-304650-095 2
7.6 25,930 480 3 9.1 CVEP-C-76-43 58” 20-1/16” 8-15/16” 94 003-304650-062 2
7.6 25,930 575 3 7.6 CVEP-C-76-63 58” 20-1/16” 8-15/16” 94 003-304650-063 2
4.5/9.0 15,350/30,700 208 1 21.6/43.3 CVEP-C-45/90-81 70” 20-1/16” 8-15/16” 87/112 003-304650-065
1 or 2
4.5/9.0 15,350/30,700 208 3 12.5/25.0 CVEP-C-45/90-83 70” 20-1/16” 8-15/16” 87/112 003-304650-069
1 or 2
4.5/9.0 15,350/30,700 240 1 18.8/37.5 CVEP-C-45/90-21 70” 20-1/16” 8-15/16” 87/112 003-304650-100
1 or 2
4.5/9.0 15,350/30,700 240 3 10.8/21.7 CVEP-C-45/90-23 70” 20-1/16” 8-15/16” 87/112 003-304650-070
1 or 2
4.5/9.0 15,350/30,700 277 1 16.2/32.5 CVEP-C-45/90-71 70” 20-1/16” 8-15/16” 87/112 003-304650-067
1 or 2
4.5/9.0 15,350/30,700 480 1 9.4/18.8 CVEP-C-45/90-41 70” 20-1/16” 8-15/16” 87/112 003-304650-068
1 or 2
4.5/9.0 15,350/30,700 480 3 5.4/10.8 CVEP-C-45/90-43 70” 20-1/16” 8-15/16” 87/112 003-304650-073
1 or 2
4.5/9.0 15,350/30,700 575 3 4.5/9.0 CVEP-C-45/90-63 70” 20-1/16” 8-15/16” 87/112 003-304650-074
1 or 2
6
Model Front Rear Right Left Element
Any Voltage Cover Assembly Cover Assembly Side Panel Side Panel Support Bracket
CVEP-C-16/18/36 207-304644-101 207-304644-001 207-304644-201 304-304644-301 027-304646-001
CVEP-C-32/76 207-304644-102 207-304644-002 207-304644-201 304-304644-301 027-304646-001
CVEP-C-40/45/90 207-304644-103 207-304644-003 207-304644-201 304-304644-301 027-304646-001
Control Combination
Code Contactor Transformer
Coil Secondary
00 None None
30 24 Volt 24 Volt
31 24 Volt None
32 120 Volt 120 Volt
33 120 Volt None
34 208/240 Volt None
35 277 Volt None
Primary Secondary
Transformer
Voltage Voltage
208/240/480 24 315-304252-002
208/240/480 120 315-304252-001
277 24 315-304252-004
575 24 315-304252-005
277/575 120 315-304252-003
Code Thermostat
00 None
40 300-049197-003
42 300-113075-003
Contactor
Coil Voltage 30 Amp 50 Amp
24V 072-304551-001 072-304551-002
120V 072-304551-007 072-304551-008
208/240V 072-304551-013 072-304551-014
277V 072-304551-019 072-304551-020
7
REPLACEMENT PARTS
C V E P C kW Volts Phase Control Stat
* Included when unit is equipped with control(s).
2150 N. RULON WHITE BLVD., OGDEN, UT 84404
Phone: 1-800-368-2493 www.chromalox.com
02 - 074
TA - Q4 - EF
Litho in U.S.A.
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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