Chromalox UB-2502A Bedienungsanleitung

(Supersedes PF423-3)

PF423-4

161-027048-001

JULY, 2002

and

Installation, Operation

RENEWAL PARTS IDENTIFICATION

Type UB-2502A and UB-3002A

Forced-Air Heater

IMPORTANT

Specifications – Table A

Horizontal

Air Wt.

Model Volts and Phase kW

Discharge (Lbs.)

UB-2502A 240V, 550V, 575V, 600V (3ø) 25 48’ 185

480V (1ø or 3ø)

UB-3002A 240V, 550V, 575V, 600V (3ø) 30 48’ 185

480V (1ø or 3ø)

WARNING: Hazard of Electric Shock. Disconnect

all power before installing heater.

WARNING: This heater is not intended for use in

hazardous atmospheres where flammable vapors,

gases, liquids or other combustible atmospheres

are present as defined in the National Electrical

Code. Failure to comply can result in explosion or

fire. For these applications see PDS CXH-EP

(PF305).

WARNING: Users should install adequate back-up

controls and safety devices with their electric

heating equipment. Where the consequences of

failure may be severe, back-up controls are essen-

tial. Although the safety of installation is the

responsibility of the user, Chromalox will be glad to

make equipment recommendations.

Do not mount mercury type thermostat directly on unit. Vibration

could cause heater to malfunction.

The heater must be mounted at least 7’ above the floor to prevent

accidental contact with the heating elements or fan blade which

could cause injury.

Keep at least 5’ clearance in front of the heater. Refer to Figures 1

and 2 for side, top and back clearance requirements.

The wall or ceiling mounting structure and the anchoring provision

must be of sufficient strength to support the combined weight of

the heater and mounting bracket. (Refer to Table A for weights of

heater and bracket).

Fan blade rotation must be checked. If airflow is not moving out

through the louvers, interchange any two of the three customer

power leads on three-phase units only.

Figure 1

(Wall Mounted)

Figure 2

(Ceiling Mounted)

MOUNTING

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

and the National Electrical Code by a qualified person.

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.

1. Connect heater according to the voltage and frequency speci-

fied on the nameplate and using the appropriate wiring diagram

(Figures 3 thru 11).

Note: Be sure to check the voltage rating of the fan motor since

it is not necessarily the same as the heater circuit.

2. If an external transformer is used to step down the voltage for

operating the fan motor, use appropriate wiring diagram (Figures

8 thru 11).

3. Heaters are not provided with a control switch and should be

controlled by externally mounted disconnect switches and/or

separately mounted thermostat and control switch as recom-

mended in appropriate wiring diagrams (Figures 3 thru 11).

Key to proper wiring diagram is the part number (P/N) of inter-

nal wiring diagram located on inside of the hinged cover of the

terminal box.

4. Protection against overheating is provided by an internal auto-

matic thermal cutout which opens the electric circuit if the nor-

mal air-flow is restricted or stopped. Cutout automatically

energizes heater on removal of the obstruction.

WARNING: Hazard of Electric Shock. Disconnect all

power before installing heater.

WARNING: These heaters are designed for wall or

ceiling mounting only. Other modes of mounting

voids factory warranty.

1. Height above floor

A. In areas where ceiling height is more than 12 feet, recom-

mended mounting height is approximately 10 feet to under-

side of heater.

B. For ceiling heights of 12 feet or less, maximum mounting

height is determined by use of ceiling mounting brackets

offered with these heaters. Minimum spacing to ceiling is

14-1/4”.

C. In either case, the minimum mounting height is 7 feet from

floor to bottom of heater. (See Figures 1 and 2.)

2. Spacing to adjacent walls

A. Rear of case to back wall 11” minimum.

B. Side of case to side wall 12” minimum.

3. If two or more units are operated in the same enclosed space,

their discharges should be directed to aid in development of

mass air movement for uniform heat dispersal.

4. Controlling thermostats to individual heaters should be mount-

ed at shoulder height on inside walls or columns.

WIRING

Figure 3

WIRING DIAGRAMS

Figure 4

Figure 5

WIRING DIAGRAMS

Figure 6

Figure 7

WIRING DIAGRAMS

Figure 8

Figure 9

WIRING DIAGRAMS

Figure 10

Figure 11

OPERATION

1. DANGER: Hazard of Fire.

A. Do not restrict air flow through heater by placing fabric or

other obstructions in front of or behind the heater.

Increased discharge temperatures can discolor or ignite

some heat sensitive combustible materials.

B. Do not operate heater in areas where combustible lint, dust

or flammable vapors, gases or liquids are present.

2. Do not operate heater in corrosive atmosphere conditions to

avoid destructive damage to heater.

3. Avoid operating heater in dusty environment which can foul

heater fins to dissipate heat or impair motor ventilation leading

to excessive operating temperatures.

4. Do not operate heater in ambient temperatures exceeding 90OF.

MAINTENANCE

WARNING: Turn off all power to service heater. Do

not attempt to service heater while unit is operat-

ing as there is hazard of electric shock, injury from

operating fan, and burns from hot heating ele-

ments.

1. Fan motors in these heaters are provided with sealed ball bear-

ings, factory lubricated, requiring no further lubrication under

normal service conditions.

2. Vacuum heater before activating heater for next heating season

to remove accumulated dust or lint which otherwise may

smoke or incinerate on initial heat up.

3. Periodically inspect all electrical connections and terminals to

avoid electrical wiring difficulties. Inspect all wiring for frayed

or worn insulation.

RENEWAL PARTS IDENTIFICATION

Model Voltage Phase Heating Element

240 3 118-045307-011 (6)

480 1 or 3 118-045307-012 (6)

UB-2502A 550 3 118-045307-013 (6)

575 3 118-045307-014 (6)

600 3 118-045307-015 (6)

240 3 118-045307-002 (6)

480 1 or 3 118-045307-003 (6)

UB-3002A 550 3 118-045307-007 (6)

575 3 118-045307-016 (6)

600 3 118-045307-017 (6)

1HEATING ELEMENTS

Note: Number in parentheses ( ) indicates the quantity of that part required.

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

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

RENEWAL PARTS IDENTIFICATION

Fuses — 600 Volt Fuseholders

Manufacturer’s

Part Number Amps Cat. No. Use Part Number Description

128-026510-001 35 JKS 35

128-026510-004 40 JKS 40 Power 129-025643-001 600 Volt, 60 Amp, 3 Pole

128-026510-005 45 JKS 45

128-026510-006 50 JKS 50

128-027590-001 1 KTK-R-1 Control/ 129-048473-001 2, 3, 4, 5 poles contact section

128-027590-008 8 KTK-R-8 Motor 129-048475-001 End barrier section for use

128-027590-010 15 KTK-R-15 with 129-048473-001

Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112-027567-001

Fan Delay . . . . . . . . . . . . . . . . . . . . . . . . . . 300-048038-001

Cutout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300-049602-008

Manual Reset Cutout (Optional) . . . . . . . . . 300-117647-006

Grille . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134-119147-003

Louver Assembly . . . . . . . . . . . . . . . . . . . . 182-047073-003

Mounting Bracket - (Right Hand) . . . . . . . . 027-025836-001

(Left Hand) . . . . . . . . . 027-025836-002

Thermostat (Optional) . . . . . . . . . . . . . . . . 300-026604-001

Contactor . . . . . . . . . . . . . . . . . . . . . . . . . . 072-304551-008

Auxiliary Contact . . . . . . . . . . . . . . . . . . . . 072-304551-101

3MOTORS AND CAPACITORS

6FUSES

Voltages

Size Part Number V.A. Rating Primary Secondary

Large 315-052169-011 970 220, 230, 240, 440, 460, 480 110, 115, 120

315-052169-012 550, 575, 600 110, 115, 120

Small 315-304252-001 40 240 & 480 120

315-304252-003 575 120

TRANSFORMERS

PARTS COMMON TO ALL HEATERS

Motors Capacitors

Manufacturer’s Specifications Manufacturer’s Specifications

Part No. Cat. No. Volts Amps Phase Cycles RPM HP Part No. Cat. No. Type Vac Cap.

193-025776-001 HF2K007N 115 5.4 1 60 1625 1/3 040-025779-001 1270 Oil 370 5 MFD

193-025776-002 HF2K006N 230 2.54 1 60 1625 1/3 040-025779-002 1271 Oil 370 6 MFD

193-302120-011 P55YYBYV-887 460 0.9 3 60 1725 1/3 — — — — —

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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