Chromalox PF490 5 User Manual

Chromalox

SERVICE REFERENCE

Installation Instructions

DIVISION

SALES

SECTION CXH-A

and

^REFERENCE(Supersedes PF490-4)

PF490-5

RENEWAL PARTS IDENTIFICATION

161-302421-004

DATE

JULY, 2004

2”

Forced Air Heater

for Hazardous Locations

CXH-A-03 EP to CXH-A-35 EP

Class I - Groups C & D, Div. 1 & 2

Class II - Groups E, F & G

T3B - 165˚C (329˚F)

11-1/16”

Table A – Specifications

5/8” UNC Tapped

Mounting Hole

Locations

Overall Dimensions

(In.)

Horiz. Air

Discharge

(Ft.)

Wt.

Model

Voltage and Phase

BTUH

CFM

700

840

1450

(Lbs.)

127

133

138

150

208/240V-1 or 3Ø

480/575V-3Ø

208/240V-1 or 3Ø

480/575V-3Ø

208/240V-1 or 3Ø

480/575V-3Ø

240V-1 or 3Ø

208/480/575V-3Ø

208/240/480V

575V-3Ø

CXH-A-03

CXH-A-05

CXH-A-07

CXH-A-10

CXH-A-15

10,236

17,060

25,590

34,120

51,180

19-1/8

23-7/8

27-7/8

3-1/2

4-13/32

13-5/8

17-5/8

7.5

CXH-A-18

CXH-A-20

CXH-A-25

CXH-A-30

CXH-A-35

240V-3Ø

61,420

68,240

85,300

102,360

119,420

1400

2330

165

200

32-1/8

27-7/8

31-7/8

21-3/4

4-13/32

5-1/2

17-5/8

21-5/8

480/575V-3Ø

INSTALLATION

the use of a mounting kit (ceiling, wall or pole) available from

Chromalox. (Figures 5, 6 and 7)

FIRE/EXPLOSION HAZARD. Mount only in upright

position and observe nameplate mounting clear-

ances.

The ceiling or wall mounting surface and the anchoring pro-

vision must be sufficient to support the combined weights of the

unit and mounting hardware.

If using mounting hardware or a supporting structure not

supplied by Chromalox, the unit should be suspended from the

supporting structure thru the two mounting points on top of the

unit with 5/8 NC bolts and lockwashers. If single point mounting

is desired, order the correct size Chromalox adapter bracket (P/N

027-302361-001 for 12” fan units, P/N 027-302361-002 for 16”

fan units) and P/N 027-302361-003 for 20” fan units. This bracket

is designed to hold the unit over its center of gravity with a 1 dia.

bolt. The maximum tilt angles as shown in Figure 3 must not be

exceeded in either direction during operation and installation.

Failure to comply will cause high limit shut down.

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

building exposed to a prevailing wind.

Locate thermostat on interior partition walls or posts away

from cold drafts, internal heat sources and away from heater dis-

charge 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 2. Large rooms require multi-unit installations. Number

and capacity of units will be determined by volume of building

and square feet of floor area to be heated. Arrange units to pro-

vide perimeter air circulation where each unit supports the air

stream from another.

The CXH-A hazardous location heaters are designed for use

only in a permanently mounted upright position. We recommend

Figure 2

Maximum Out of Plane Allowance

1/2" Max

13mm

1/2" Max

13mm

Figure 3

The heaters may be mounted at any convenient height above

floor. The minimum spacings shown in Figure 4 should be main-

tained to adjacent walls and ceiling. If floor heat is desired, do not

mount higher than 8 to 10 feet above floor.

Controlling thermostats to individual heaters should be

mounted at shoulder height on inside walls or columns and clear

of the discharge air stream of the unit. Allow at least 4 in front of

heater for air stream to discharge freely.

Heater may be mounted on a shelf or stand from the bottom.

Be sure that mounting clearances are maintained and that bottom

of unit has at least 1 clearance underneath it. This is necessary for

good air circulation and servicing of heat exchanger. All mount-

ing methods must allow for removal of front cover.

The mounting and anchoring provisions must take into

account the unit vibration and cantilevered loading when wall or

pole mounted. One of the Chromalox mounting kits shown in

Figures 5, 6 and 7 must be used whenever possible.

Do not mount mercury type thermostat directly on unit,

vibration could cause malfunction.

Installation Clearances

102mm

Min.

(4")

5/8 NC (2)

Thds. For

Mounting

102mm Min. (4")

204mm

Min.

(8")

Figure 4

MOUNTING KITS

Wall Mount Kit

Pole or Wall Mount Kit

Model # WMB-12 12” Fan (3-10 kW)

Model # WMB-16 16” Fan (15-20 kW)

Model # WMB-20 20” Fan (25-35 kW)

Model # PMB-12 12” Fan (3-10 kW)

Model # PMB-16 16” Fan (15-20 kW)

Model # PMB-20 20” Fan (25-35 kW)

12” Fan - 16-3/4”

Heater Mounting

16” Fan - 18-1/2”

20” Fan - 22”

Wall

Bracket

1”ø Hardware % Bolt

Single Point

Swivel Mount

Supplied

Pole Support

Bracket

Bracket Arm &

Hardware

1/2 ø Hardware

Not Supplied

Single Point

Swivel 4”ø

Supplied

Adapter Bracket

Supplied

with 5/8 Bolts

Adapter Bracket

& 5/8 NC Hardware

Supplied

ø 3/8 Hardware

Cust. Supplied

5-1/2” - 12” Fan

5-1/8” - 16” Fan

6-3/8” - 20” Fan

ø 1/2 x 4” U-Bolts

& Hardware

Cust. Supplied

CXH-03EP through CXH-10

CXH-10EP through CXH-20

CXH-25EP through CXH-35

P=10”

P=11-1/2”

P=14-1/2”

Figure 5

Ceiling Mount Kit

Model # HMK-00

6” Ref.

3-1/2” SCH. 40 Pipe

or 4” O.D. X .25 Wall

Tube Cust. Supplied

Length to Suit

Cust. Supplied ø 1/2 Mounting

Hardware. Bracket Spacing

suitable for use with 4” U-Bolts

4-9/16

Swivel Ceiling

Hanger S/A &

Hardware

Pole Base

4-7/8

3/8” ø Hardware

Required for

Mounting -

5/8” ø Hex Nuts &

Washers

ø 5/8 Rods Length to suit

1” Min. Threaded Ends

Customer Supplied

Supplied for

Installation

Cust. Supplied

Top & Bottom

CXH-03 through CXH-10

CXH-10 through CXH-20

CXH-25 through CXH-35

P=10”

P=11-1/2”

P=14-1/2”

Figure 7

Figure 6

Electrical

Components

Unit Top View

Transformer

1” NPT

Jumper Wire

1” NPT

Top Line Supply

Entry

Pilot Lamp

(Opt.)

Contactor

1/2” NPT

Thermostat Entry

Heat

Exchanger

Wiring

5/8-11 Threaded

Mounting Holes (2)

Compartment

Figure 9

Figure 10

WIRING AND WIRING DIAGRAMS

4. The fan motor is factory wired at the same voltage, and phase as

the heating elements. All motors are thermally protected and con-

nected to the main supply contactor. On three phase units, it is

necessary to verify that the fan rotation is correct. Air stream

discharge must be out front of unit. After connecting unit to line

and closing all covers tightly, energize unit momentarily. If air

does not exit front louvers, reverse any two supply leads at the

box lugs on the contactor or at the supply disconnect.

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 accor-

dance with the National Electrical Code, NFPA 70.

5. Either of two 1 NPT rigid conduit openings with integral stops

may be used for connection to supply line. (See Figure 9 and 10

for locations) Use only NEC approval hazardous locations means

of wiring such as mineral insulated cable and fittings or rigid con-

duit and seal fittings located as required by installation codes.

ELECTRIC SHOCK HAZARD. Any installation involving

electric heaters must be performed by a qualified

person and must be effectively grounded in accor-

dance with the National Electrical Code to eliminate

shock hazard.

1. Loosen and remove bolts securing the main terminal enclosure

cover on side of unit. Connect heater to line supply wires at the

box lugs located on the contactor according the voltage and fre-

quency specified on the nameplate (see Figure 9). Refer to the

appropriate wiring diagram which also appears on the inside

cover of this enclosure (see Table B and diagrams on page 6).

EXPLOSION HAZARD. All unused conduit openings

must be fitted with plugs that are U.L. recognized for

use in hazardous locations.

6. Heaters may be provided with a built-in control switch and/or

thermostat. If not, they should be controlled by an externally

mounted disconnect switch and/or separately mounted thermostat

as shown in the appropriate wiring diagram on page 6. In case of

malfunction, the personnel in the area should be aware of location

of heater disconnect.

7. Installation must include appropriate over current protection

devices (fusing or circuit breakers) as required by the National

Electric Code in the supply line to the unit. Refer to nameplate for

proper current ratings.

8. To operate heaters from an externally mounted hazardous location

thermostat, a terminal block is provided for connection (Figures 9

and 10). Remove the factory installed jumper across T2 and T3 on

the terminal strip. Wire the thermostat contact leads to these ter-

minals. The built in control transformer supplies the unit with

either 24V or 120V for internal unit operation. This voltage will

appear across the thermostat contacts when they are open. The

minimum thermostat contact rating should be 1 amp @ 120 VAC.

Refer to nameplate for control voltage of unit. The 1/2 NPT con-

duit wiring entry on top of the terminal enclosure should be used

to wire the thermostat to the heater (Figure 10).

9. Protection against overheating is provided by a manual reset limit

control located within the heat exchanger wiring compartment.

(Figure 9) Activation of the control will open the control circuit

and energize the pilot lamp (if supplied). If normal airflow is

restricted, or stopped, the unit will be cycled off by the manual

reset cutout. The manual reset limit control is also designed to

shut down the unit completely if the fluid level is low or other

heater malfunction occurs.

EXPLOSION HAZARD. Cover joints must be clean

before replacing cover. Do not use any gasket materi-

al on joint surfaces.

2. Use copper conductors only for supply wires. Refer to name-

plate and Table B for size and rating required.

3. Connect supply line ground conductor to the box lug provided

on the base plate below contactor input lugs.

Table B – Supply Wiring Requirements

Supply Wire

90˚C Size

(ga)

Max Fuse

Amps

Wiring

Diagram #

Model

Phase

Volts

CXH-A-03

208

240

480

575

CXH-A-05

208

240

480

575

CXH-A-07

7.5

208

240

480

575

CXH-A-10

208

240

480

575

Manual reset limit control must never be bypassed in

the control circuit. If the limit actuates, shut down

unit and investigate cause of abnormal operation. Do

not reenergize until the problem has been corrected.

CXH-A-15

208

240

480

575

CXH-A-18

240

Users should install adequate back-up controls and

safety devices with their electric heating equipment.

If the back-up controls are to be located in the haz-

ardous area, they must be approved for use in the

class of location. Where the consequences of failure

may be severe, back-up controls are essential.

CXH-A-20

480

575

CXH-A-25

480

575

CXH-A-30

480

575

CXH-A-35

480

575

WIRING DIAGRAMS

DIAGRAM I

Refer to Name Plate for Input Voltage

1PH

L1 L2

Optional

Disconnect

Transformer Color Code Tabulation

Switch

PRI

PRI. XFMR

120V SEC

24V SEC

GND

VOLT.

LEAD CLRS.

Elements

BLK

YEL

BLU

208

240

380

415

BLK

RED

ORG

VIO

YEL

BRN

WHT

YEL

BLU

480

575/600

BLK BLK/RED BLK

BLK GRY BLK

WHT

1 PH

Motor

Optional

Refer to Nameplate

for Transformer

Voltage

Auxiliary

Contactor

Factory Wiring

Optional or Customer Wiring

Alarm

Contactor Coil

Manual Reset

High Limit

Remove this wire

when using a

thermostat

Built in or

External

Thermostat

DIAGRAM II

Refer to Name Plate for Input Voltage

3PH

L1 L2

Transformer Color Code Tabulation

Optional

Disconnect

Switch

PRI

PRI. XFMR

120V SEC

24V SEC

VOLT.

LEAD CLRS.

GND

BLK

YEL

BLU

Elements

208

240

380

415

BLK

RED

ORG

VIO

YEL

BRN

WHT

YEL

BLU

480

575/600

BLK BLK/RED BLK

BLK GRY BLK

WHT

3 PH

Motor

Optional

Refer to Nameplate

for Transformer

Voltage

Factory Wiring

Optional or Customer Wirin

Auxiliary

Alarm

Contactor

Contactor Coil

Manual Reset

High Limit Control

Remove this wire

when using a

thermostat

Built in or

External

Thermostat

MODEL NUMBER DESCRIPTION

CXH-A

Explosion Proof

Heater Voltage

30 = 24V Controls

32 = 120V Controls

1 = Ethylene Group C & D, E, F, G T3B

2 = Propylene Group C & D, E, F, G T3B

3 = Ethylene Group C, D, F, G T3B

4 = Propylene Group C, D, F, G T3B

2 = 240V 6 = 575V

3 = 380V 8 = 208V

4 = 480V 9 = 600V

5 = 415V

0 = No Options

1 = 15 or 30 Amp Disconn. Switch

2 = 60 Amp Disconn. Switch

3 = Pilot Light

4 = Pilot Light and 30 Amp

Disconn. Switch

5 = Pilot Light and 60 Amp

Disconn. Switch

6 = Summer Fan Switch

7 = Summer Fan Switch, Pilot Light

8 = Disconn. Switch with Summer

Fan Switch

9 = Disconn. Switch, Pilot Light

with Summer Fan Switch

Heating Element Rating

Phase

1 = 1 Phase

3 = 3 Phase

00 = No Thermostat

40 = Thermostat

03 = 3.0 kW 18 = 18.0 kW

05 = 5.0 kW 20 = 20.0 kW

07 = 7.5 kW 25 = 25.0 kW

10 = 10.0 kW 30 = 30.0 kW

15 = 15.0 kW 35 = 35.0 kW

Electric Blower Unit Heater for Hazardous Locations

OPERATION

2. The finned structure of the heat exchanger must be kept clean and

free of accumulated dust and dirt. The cabinet front panel is easily

removed providing access to the heater core for periodic cleaning.

3. Unit should not be operated with louvers fully closed. Mechanical

stops are incorporated into the design of the cabinet to limit the

degree of closure. Do not force the louvers beyond these stops.

4. If specified, units are supplied with a built in alarm pilot lamp

which will energize if the manual reset control has a been activat-

ed. During unit startup, the lamp will flash on momentarily to ver-

ify its operation.

EXPLOSION HAZARD. Heater should not be operated

in ambient temperature higher than 40˚C (104˚F) or in

atmospheres corrosive to the heater itself.

1. The CXH-A unit heaters use a sealed water-glycol filled heat

exchanger. The electric immersion elements transfer heat energy

directly to the fluid generating a fluid/vapor mixture which releas-

es its heat energy to the finned radiator as it rises and recondenses

back to the bottom reservoir to be reheated. This cycle will con-

tinue as long as fan forced air is available on the finned structure

to remove the heat to the airstream.

MAINTENANCE AND REPAIR

Maintenance and repair must be performed by qualified personnel only.

I. REPLACING THE HEAT EXCHANGER

EXPLOSION/ELECTRIC SHOCK HAZARD. Disconnect

all power before opening enclosure covers or servic-

ing heater. Failure to comply could result in personal

injury or property damage.

BURN HAZARD. Be sure heat exchanger and fluid has

been allowed to cool to 110˚F before proceeding.

1. Periodically inspect all electrical connections and terminals to

avoid electrical wiring difficulties. Inspect all wiring for frayed or

worn insulation.

2. Periodically and before each heating season, clean the finned heat

exchanger and fan inlet with compresses air, vacuum, or water jet.

Be sure all electrical covers are tightly closed.

3. If heat output seems to be low, check amperage draw on each ele-

ment. Compare measured values to the correct currents as listed

on the unit nameplate.

4. The thermally protected fan motor is permanently lubricated and

sealed. No field servicing is required or should be attempted.

Replace only with a factory supplied identical motor. Failure to

do so will void the factory warranty and may expose the user to

risk of ignition of hazardous atmospheres.

1. Detach the cabinet front by removing screws from all sides of unit

and pulling cover forward off cabinet shell. Detach bottom panel by

removing two screws on each side and two screws in the rear.

Remove the electrical control enclosure lid. Disconnect the heater

and high limit wires from the electrical control enclosure. Loosen

electrical conduit union located between the heater housing and the

electrical control enclosure. Support the lower end of the heat

exchanger and loosen the three hex head bolts which hold it to the

sheet metal. Lower the heat exchanger away from the sheet metal.

Reverse the above procedure when installing a new heat exchanger.

II. RESETTING MANUAL RESET LIMIT CONTROL

5. Check fan blade to be sure that set screws are tight and there are

no cracks or looseness in the blades. Use factory supplied replace-

ment blade only.

EXPLOSION HAZARD. Be sure that all enclosure cov-

ers are replaced and tightly closed before re-energiz-

ing unit after servicing electrical components.

6. Check for any sign of leaking from the heat exchanger. Too little

fluid will cause the manual high limit to trip.

High limit controls must never be bypassed in control

circuit.

7. The sealed heat exchanger contains a glycol/water solution of

propylene glycol. Ethylene glycol is supplied for arctic duty con-

ditions only. Avoid contact with skin and eyes. If ingestion should

occur, seek medical attention immediately. In case of eyes or skin

contact, wash affected areas with large amounts of water. The

MSDS (Material Safety Data Sheet) for these materials is

available upon request.

The factory must perform the replacement of the

immersion heater or overtemperature cutout. The

heat exchanger seal must not be broken. Consult fac-

tory for service.

MAINTENANCE AND REPAIR

The occurrence of the manual reset limit control to trip is an

E. Remove 4 bolts in motor base holding it to rear cabinet shelf.

abnormal condition. Care should be taken to determine the exact

reason that the high limit control tripped. Possible problem areas

could be dirty heat exchanger, blocked air inlet or outlet,

fan/motor malfunction, too high operating ambient, incorrect

operating voltage, or leaking heat exchanger. In the event that the

heat exchanger is defective, it must be replaced.

See Figure 13.

F. Remove 4 screws holding fan guard to cabinet.

1. The manual reset limit control is located in the heating element

hazardous location enclosure on the heat exchanger which is

covered by the sheet metal housing attached to the side of the

unit. To gain access, remove the four sheet metal screws holding

the sheet metal cover in place and unthread the cast aluminum

enclosure lid. (See Figure 11.) The manual reset limit control

device has a small reset button protruding from the center of its

back housing. Depress this button in to reset the control.

Replace the aluminum enclosure lid and sheet metal cover.

Figure 13

G. Unthread union at motor wiring outlet nipple connection.

Carefully lift the motor, fan blade, and guard off of the cabi-

net.

H. Note position of fan blade on motor shaft. Loosen the two set

screws to remove the fan blade and key from shaft motor.

I. Place guard and fan blade on replacement motor shaft in same

locations as original motor. Align key ways in hub and shaft.

Insert key flush with fan hub and tighten the two hub set

screws.

5-3/4"

J. Feed motor wires back into conduit and reposition motor back

on unit. Center fan blade in opening and rotate to be sure that

it clears housing and guard.

K. Thread motor nipple connection into conduit union and tight-

en (5 threads minimum). Replace bolts in motor base and reat-

tach fan guard to back of housing in four places. Recheck

blade rotation and tighten all hardware.

L. Trim all motor leads extending out of the conduit to 6 lengths.

Strip off 3/8 of insulation at cut ends. Using the motor name-

plate, previous notes, and marked wires, reconnect the motor

for the unit voltage rating as indicated on the heater name-

plate. Re-attach the ground wire to the connection inside the

enclosure. Replace cover and tighten securely.

M. Check fan rotation by momentarily energizing the unit. Air

must exit at cabinet front. Reverse any 2 leads at contactor or

line supply disconnect to reverse rotation of three phase

motor.

5-3/4"

Figure 11

III. FAN MOTOR AND BLADE

1. The motor is a sealed unit that requires no lubrication. If the

motor is defective, it must be replaced with an original factory

supplied motor. (See renewal parts section.)

2. To replace the motor, proceed as follows:

A. Disconnect the unit from power supply.

B. (Units with motor splice box) Remove 4 bolts and cover of

motor splice box (See Figure 12).

C. (Units without motor splice box) Remove 16 bolts and cover

of main control enclosure.

D. Note wire connections for future reference and disconnect all

wires leading to the motor. All motor wires are permanently

marked according to the nameplate on the motor.

3. Removal of fan blade does not require that the motor wiring be

disturbed. To clean, service or change the fan blade proceed as

follows:

A. Remove the four carriage bolts holding the motor base in

place on the cabinet platform. Mark the platform to reposition

at same location.

B. Loosen the four screws on the cabinet back holding the fan

guard in place.

C. Pull the motor to the rear extending the conduit connection at

the electrical enclosure. Fan blade and hub set screws can now

be accessed by tilting the guard rearward at top or bottom

back over the motor shell.

IV. ELECTRICAL COMPONENT SERVICING

EXPLOSION/ELECTRIC SHOCK HAZARD. Disconnect

all power before opening enclosure covers or servic-

ing heater. Failure to comply could result in personal

injury or property damage.

When provided, the following components are located in the cast

aluminum hazardous location enclosure. Remove cover and

retaining bolts to gain access the following items (See Figure 16):

Figure 12

MAINTENANCE AND REPAIR

which is held tight to the enclosure with a locking nut on the

1. CONTROL TRANSFORMER

inside of the enclosure. It must be re-tightened if loosened before

reuse. Replace the lamp with a 656 type bulb at the correct control

voltage for the unit (120V or 24). Secure the lens cap (5 threads

minimum) against the locking ring and tighten securely before re-

energizing unit. Lamp should flash on momentarily when unit is

energized. See renewal parts section for part number of replace-

ment bulbs.

This item is located in the electrical enclosure. It may be replaced

while in the enclosure. To service or replace remove the quick

connect wires and mark their locations. Remove two screws

which hold the transformer in place. Note transformer orientation

and voltage labels on top. Replace transformer in the same orien-

tation and connect wires. Replace the cast aluminum cover and

bolt down.

2. CONTACTOR

This component can be removed from the base plate while in the

enclosure. Follow the same steps as indicated for the transformer

replacement.

3. ALARM PILOT LAMP (OPTIONAL)

To replace the bulb, unscrew the red lens bezel while holding the

lock ring until disengaged. Avoid turning the entire assembly

Figure 14

Figure 15

CXH-A with Built in Disconnect Switch

(Must use HMK-00 Ceiling Mounting Kit)

CXH-A with Built in Thermostat

RENEWAL PARTS IDENTIFICATION

Publication Number

Title

PF458

PF461

PF462

Mounting Kits for Model CXH-EP

Material Safety Data Sheet Chromakool EG

Material Safety Data Sheet Chromakool PG

RENEWAL PARTS IDENTIFICATION

Electrical Control Voltage

24V

120V

Contactor

072-304551-002

315-304252-002

315-304252-005

072-304551-102

315-304252-006

—

072-304551-008

315-304252-001

315-304252-003

072-304551-102

315-304252-007

315-304252-008

Transformer 208/240/480 PRI

Transformer 575 PRI

Aux. Contactor

Transformer 380/415 PRI

Transformer CXH-B

Transformer

Contactor

Figure 16

Figure 17

MANUFACTURER PART NUMBER BREAKDOWN

(LOCATED ON UNIT NAMEPLATE)

CXH-A-I I - I I - I I - EP

Motor, Element and Heat Exchanger Parts

Common Parts

Item#

Shown in Figure 17

1/4 HP

Motor

Code CXH-A-03

05, 07&10

Part No.

CXH-A-15,

18 & 20

CXH-A-25,

Heat Exchanger*

Item 49

30 & 35

Part No.

Description

Model

Item 19

Part No.

CXH-A-03-81

CXH-A-03-83

CXH-A-03-21

CXH-A-03-23

CXH-A-03-43

CXH-A-03-63

CXH-A-05-81

CXH-A-05-83

CXH-A-05-21

CXH-A-05-23

CXH-A-05-43

CXH-A-05-63

CXH-A-07-81

CXH-A-07-83

CXH-A-07-21

CXH-A-07-23

CXH-A-07-43

CXH-A-07-63

CXH-A-10-83

CXH-A-10-21

CXH-A-10-23

CXH-A-10-43

CXH-A-10-63

CXH-A-15-83

CXH-A-15-23

CXH-A-15-43

CXH-A-15-63

CXH-A-18-23

CXH-A-20-43

CXH-A-20-63

193-302087-006

193-302087-007

193-302087-006

193-302087-007

193-302087-008

193-302087-006

193-302087-007

193-302087-006

193-302087-007

193-302087-008

193-302087-006

193-302087-007

193-302087-006

193-302087-007

193-302087-008

193-302087-007

193-302087-006

193-302087-007

193-302087-008

193-302087-007

193-302087-008

193-302087-007

193-302087-008

1/2 HP Motors

353-304167-001

353-304167-002

353-304167-005

353-304167-006

353-304167-008

353-304167-009

353-304167-012

353-304167-013

353-304168-001

353-304168-002

353-304168-005

353-304168-006

353-304168-008

353-304168-009

353-304168-012

353-304168-013

353-304169-001

353-304169-002

353-304169-005

353-304169-006

353-304169-008

353-304169-012

353-304169-013

Panel wrapper

Panel Bottom

Panel Front

Louver

Washer Shoulder

Spring

Terminal Box Cover

Screw 10-32

Fan Blade

Fan Guard

Enclosure

207-303891-001

207-303881-001

207-303883-001

182-303884-001

328-302074-002

276-130368-001

080-302079-001

248-073662-002

Consult Factory

134-302063-004

347-304561-001

345-075603-263

328-075528-085

328-075571-011

200-075473-044

221-302180-001

221-302180-003

354-302165-001

354-302243-001

Consult factory

207-303891-002

207-303881-002

207-303883-002

182-303884-002

328-302074-002

276-130368-001

080-302079-001

248-073662-002

Consult Factory

134-302063-005

347-304561-001

345-075603-263

328-075528-085

328-075571-011

200-075473-044

221-302180-001

221-302180-003

354-302165-001

354-302243-001

069-304115-002

Consult factory

207-303891-003

207-303881-003

207-303883-003

182-303884-003

328-302074-002

276-130368-001

080-302079-001

248-073662-002

Consult Factory

134-302063-006

347-304561-001

345-075603-263

328-075528-085

328-075571-011

200-075473-044

221-302180-001

221-302180-003

354-302165-001

354-302243-001

069-304115-002

Consult factory

Bolt 3/8-16, 1.5 lg

Washer flat

Washer lock

Hex Nut 3/8-16

Plug conduit 1/2"

Plug conduit 1"

Union conduit 3/4"

Conduit Box

Conduit 3/4"

Plug conduit 3/4"

Bolt 5/16-18

Washer

Consult factory

221-302180-002

345-075603-218

328-075571-010

200-075473-039

080-042350-007

069-115087-049

221-302180-002

345-075603-218

328-075571-010

200-075473-039

080-042350-007

069-115087-079

221-302180-002

345-075603-218

328-075571-010

200-075473-039

080-042350-007

069-115087-093

Nut 5/16-18

Cover Exp. Proof

Conduit 3/4

Optional Equipment Parts

Description Part Number

CXH-A-25-43

CXH-A-25-63

CXH-A-30-43

CXH-A-30-63

CXH-A-35-43

CXH-A-35-63

193-302087-009

193-302087-010

193-302087-009

193-302087-010

193-302087-009

193-302087-010

353-304170-003

353-304170-004

353-304170-008

353-304170-009

353-304170-012

353-304170-013

Thermostat

300-113075-003

104-304328-001

104-304328-002

213-121103-017

213-121103-018

172-052561-004

172-052561-003

30 Amp Disconnect

60 Amp Disconnect

Pilot Light Ass’y 24V

Pilot Light Ass’y 120V

Pilot Lamp 24V

* For arctic duty conditions, heat exchanger with ethylene

glycol are required. Consult factory.

Pilot Lamp 120V

Mounting Kit Adapter

The factory must perform the replace-

ment of the immersion heater or

overtemperature cutout. The heat

exchanger seal must not be broken.

Consult factory for service.

CXH-A-03 through 10

CXH-A-15 through 20

CXH-A-25 through 35

027-302361-001

027-302361-002

027-302361-003

Limited Warranty:

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

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

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

Phone: 1-800-368-2493

www.chromalox.com

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