Chromalox UB-2502A user manual

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4 UB

(Supersedes PF423-3) PF423-4
161-027048-001
JULY, 2002
Type UB-2502A and UB-3002A
Forced-Air Heater
Figure 1 Figure 2
(Wall Mounted) (Ceiling Mounted)
Specifications – Table A
Horizontal
Wt.
Air
Model Volts and Phase kW
(Lbs.)
Discharge
240V, 550V, 575V, 600V (3ø)
UB-2502A 25 48’ 185
480V (1ø or 3ø)
240V, 550V, 575V, 600V (3ø)
UB-3002A 30 48’ 185
480V (1ø or 3ø)
IMPORTANT
WARNING: Hazard of Electric Shock. Disconnect Do not mount

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MOUNTING offered with these heaters. Minimum spacing to ceiling is WARNING: Hazard of Electric Shock. Disconnect all 14-1/4”. power before installing heater. C. In either case, the minimum mounting height is 7 feet from WARNING: These heaters are designed for wall or floor to bottom of heater. (See Figures 1 and 2.) ceiling mounting only. Other modes of mounting 2. Spacing to adjacent walls voids factory warranty. A. Rear of case to back wall 11” minimum. B. Side of case to side wall 12” minimu

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WIRING DIAGRAMS Figure 4 Figure 5 3

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WIRING DIAGRAMS Figure 6 Figure 7 4

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WIRING DIAGRAMS Figure 8 Figure 9 5

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WIRING DIAGRAMS Figure 10 Figure 11 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 3. Avoid operating heater in dusty environment which can foul other obstructions in front of or behind the heater. heater fins to dissipate heat or impair motor ventilation leading Increased discharge temperatures can discolor or ignite to excessive operating temp

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MAINTENANCE WARNING: Turn off all power to service heater. Do 2. Vacuum heater before activating heater for next heating season not attempt to service heater while unit is operat- to remove accumulated dust or lint which otherwise may ing as there is hazard of electric shock, injury from smoke or incinerate on initial heat up. operating fan, and burns from hot heating ele- 3. Periodically inspect all electrical connections and terminals to ments. avoid electrical wiring difficulties. Inspect all

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RENEWAL PARTS IDENTIFICATION 2 3 MOTORS AND CAPACITORS 2 3 Motors Capacitors Specifications Specifications Manufacturer’s Manufacturer’s Part No. Part No. Cat. No. Cat. No. Volts Amps Phase Cycles RPM HP 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 — — — — — TRANSFORMERS 4 5 Voltages Size Part Number V.A. Rating Primar