Chromalox CVEP-C User Manual

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).

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

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

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

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

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

7/8

3/4" Conduit Entrance

See Detail "A"

8-15/16

20-1/16

2-3/8

5-1/16

3-3/8

1" Conduit Entrance

8-7/8

See Detail "A"

20-1/16

8-15/16

Feet are Optional Primarily Used to Protect Thermowell During Shipping and Installation

3/4" Conduit Entrance

See Detai "A"

20-1/16

8-15/16

5-1/16

3-3/8

2-3/8

WIRING

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.)

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.

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