4
UB
(Supersedes PF424-3)
PF424-4
161-027049-001
JULY, 2002
Type UB-3502A, UB-4002A, UB-4502A, UB-5002A
Forced-Air Heater
Figure 1
Figure 2
(Wall Mounted)
(Ceiling Mounted)
Specifications – Table A
Model
Horizontal
Wt.
(Lbs.)
Volts and Phase
kW
Air
Discharge
240V, 550V, 575V, 600V (3ø)
480V (1ø or 3ø)
UB-3502A
UB-4002A
UB-4502A
UB-5002A
35
40
45
50
54’
54’
54’
54’
210
210
210
210
480V (1ø or 3ø)
550V, 575V, 600V (3ø)
480V (1ø or 3ø)
550V, 575V, 600V (3ø)
480V, 550V, 575V, 600V (3ø)
IMPORTANT
WARNING: Hazard of Electric Shock. Disconnect
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.
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).
© 2010 Chromalox, Inc.
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WIRING DIAGRAMS
Figure 3
Figure 4
3
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WIRING DIAGRAMS
Figure 5
Figure 6
4
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WIRING DIAGRAMS
Figure 7
Figure 8
5
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WIRING DIAGRAMS
Figure 9
Figure 10
6
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WIRING DIAGRAMS
Figure 11
Figure 12
7
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WIRING DIAGRAMS
Figure 13
Figure 14
8
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OPERATION
2. Do not operate heater in corrosive atmosphere conditions to
1. DANGER: Hazard of Fire.
avoid destructive damage to heater.
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.
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.
B. Do not operate heater in areas where combustible lint, dust
or flammable vapors, gases or liquids are present.
MAINTENANCE
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.
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.
3. Periodically inspect all electrical connections and terminals to
avoid electrical wiring difficulties. Inspect all wiring for frayed
or worn insulation.
1. Fan motors in these heaters are provided with sealed ball bear-
ings, factory lubricated, requiring no further lubrication under
normal service conditions.
9
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RENEWAL PARTS IDENTIFICATION
1
HEATING ELEMENTS
1
1
Model
Voltage Phase
Heating Element
Model
Voltage Phase
Heating Element
240
480
550
575
600
480
550
575
600
3
118-117481-001 (6)
118-117481-002 (6)
118-117481-003 (6)
118-117481-004 (6)
118-117481-005 (6)
118-117481-006 (6)
118-117481-007 (6)
118-117481-008 (6)
118-117481-009 (6)
480
550
575
600
480
550
575
600
1 or 3
118-117481-010 (6)
118-117481-011 (6)
118-117481-012 (6)
118-117481-013 (6)
118-117481-014 (6)
118-117481-015 (6)
118-117481-016 (6)
118-117481-017(6)
1 or 3
3
3
3
3
3
3
3
UB-4502A
UB-3502A
3
3
3
1 or 3
UB-5002A
3
3
3
UB-4002A
10
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RENEWAL PARTS IDENTIFICATION
2
3
MOTORS AND CAPACITORS
3
2
Motors
Capacitors
Specifications
Specifications
Type Vac Cap.
Oil 370 5 MFD
Oil 370 6 MFD
Manufacturer’s
Cat. No.
Manufacturer’s
Cat. No.
Part No.
Part No.
Volts Amps Phase Cycles RPM HP
193-025776-001 HF2K007N
193-025776-002 HF2K006N
115 5.4
1
1
3
60 1625 1/3 040-025779-001
60 1625 1/3 040-025779-002
1270
1271
—
230 2.54
193-302120-011 P55YYBYV-887 460 0.9
60 1725 1/3
—
—
—
—
TRANSFORMERS
4
5
Voltages
Size
Part Number
V.A. Rating
Primary
Secondary
110, 115, 120
110, 115, 120
120
315-052169-011
315-052169-012
315-304252-001
315-304252-003
220, 230, 240, 440, 460, 480
550, 575, 600
240 & 480
4
5
Large
970
Small
40
575
120
FUSES
6
Fuses — 600 Volt
Fuseholders
Manufacturer’s
Cat. No.
Part Number
Amps
Use
Part Number
Description
128-026510-003
128-026510-001
128-026510-004
128-026510-006
128-026510-007
128-027590-001
128-027590-008
128-027590-010
30
35
40
50
60
1
JKS 30
JKS 35
JKS 40
JKS 50
JKS 60
KTK-R-1
KTK-R-8
KTK-R-15
Power
129-025643-002
600 Volt, 30 Amp, 3 Pole
Power
129-025643-001
600 Volt, 60 Amp, 3 Pole
129-048473-001
129-048475-001
2, 3, 4, 5 poles contact section
Control/
Motor
8
End barrier section for use
with 129-048473-001
15
PARTS COMMON TO ALL HEATERS
7
8
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
9
10
11
12
13
Mounting Bracket - (Right Hand) . . . . . . . . 027-025836-001
(Left Hand) . . . . . . . . . 027-025836-002
14
15
16
Thermostat (Optional) . . . . . . . . . . . . . . . . 300-026604-001
Contactor . . . . . . . . . . . . . . . . . . . . . . . . . . 072-304551-008
Auxiliary Contact . . . . . . . . . . . . . . . . . . . . 072-304551-101
11
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Limited Warranty:
Please refer to the Chromalox limited warranty applicable to this product at
2150 N. RULON WHITE BLVD., OGDEN, UT 84404
Phone: 1-800-368-2493
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