(Supersedes PF424-3)
PF424-4
UB
161-027049-001
JULY, 2002
4
and
Installation, Operation
RENEWAL PARTS IDENTIFICATION
Type UB-3502A, UB-4002A, UB-4502A, UB-5002A
Forced-Air Heater
© 2010 Chromalox, Inc.
Horizontal
Air
Wt.
Model Volts and Phase kW
Discharge
(Lbs.)
UB-3502A
240V, 550V, 575V, 600V (3ø)
35 54’ 210
480V (1ø or 3ø)
UB-4002A
480V (1ø or 3ø)
40 54’ 210
550V, 575V, 600V (3ø)
UB-4502A
480V (1ø or 3ø)
45 54’ 210
550V, 575V, 600V (3ø)
UB-5002A 480V, 550V, 575V, 600V (3ø) 50 54’ 210
Specifications – Table A
IMPORTANT
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 essential. Although the safety of installation is the
responsibility of the user, Chromalox will be glad to
make equipment recommendations.
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 installation 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 14).
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
7 thru 14).
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 recommended in appropriate wiring diagrams (Figures 3 thru 14).
Key to proper wiring diagram is the part number (P/N) of internal 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 normal 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 underside 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 mounted at shoulder height on inside walls or columns.
IMPORTANT
WIRING
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.
2
WIRING DIAGRAMS
Figure 4
Figure 3
3
4
WIRING DIAGRAMS
Figure 6
Figure 5
5
WIRING DIAGRAMS
Figure 8
Figure 7
6
WIRING DIAGRAMS
Figure 10
Figure 9
7
WIRING DIAGRAMS
Figure 12
Figure 11
8
WIRING DIAGRAMS
Figure 14
Figure 13
9
OPERATION
MAINTENANCE
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 90
O
F.
WARNING: Turn off all power to service heater. Do
not attempt to service heater while unit is operating as there is hazard of electric shock, injury from
operating fan, and burns from hot heating elements.
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.
10
RENEWAL PARTS IDENTIFICATION
Model Voltage Phase Heating Element Model Voltage Phase Heating Element
240 3 118-117481-001 (6) 480 1 or 3 118-117481-010 (6)
480 1 or 3 118-117481-002 (6)
UB-4502A
550 3 118-117481-011 (6)
UB-3502A 550 3 118-117481-003 (6) 575 3 118-117481-012 (6)
575 3 118-117481-004 (6) 600 3 118-117481-013 (6)
600 3 118-117481-005 (6) 480 3 118-117481-014 (6)
480 1 or 3 118-117481-006 (6)
UB-5002A
550 3 118-117481-015 (6)
UB-4002A
550 3 118-117481-007 (6) 575 3 118-117481-016 (6)
575 3 118-117481-008 (6) 600 3 118-117481-017(6)
600 3 118-117481-009 (6)
1
1
HEATING ELEMENTS
1
11
RENEWAL PARTS IDENTIFICATION
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 — — — — —
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
Fuses — 600 Volt Fuseholders
Manufacturer’s
Part Number Amps
Cat. No.
Use Part Number Description
128-026510-003 30 JKS 30 Power 129-025643-002 600 Volt, 30 Amp, 3 Pole
128-026510-001 35 JKS 35
128-026510-004 40 JKS 40
Power 129-025643-001 600 Volt, 60 Amp, 3 Pole
128-026510-006 50 JKS 50
128-026510-007 60 JKS 60
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
PARTS COMMON TO ALL HEATERS
Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112-027568-001
Fan Delay . . . . . . . . . . . . . . . . . . . . . . . . . . 300-048038-001
Cutout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 300-049602-008
Manual Reset Cutout (Optional) . . . . . . . . . 300-117647-006
Grille . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134-119147-004
Louver Assembly . . . . . . . . . . . . . . . . . . . . 182-047073-009
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
16
11
12
13
10
14
15
9
8
7
3
MOTORS AND CAPACITORS
TRANSFORMERS
6
FUSES
2
5
4
3
2
5
4
2150 N. RULON WHITE BLVD., OGDEN, UT 84404
Phone: 1-800-368-2493 www.chromalox.com
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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