Type UB-3502A, UB-4002A, UB-4502A, UB-5002A Forced-Air Heater Figure 1 Figure 2 (Wall Mounted) (Ceiling Mounted) Specifications – Table A Model Volts and Phase kW Horizontal Air Discharge Wt. (Lbs.) UB-3502A 240V, 550V, 575V, 600V (3o) 480V (1o or 3o) 35 54’ 210 UB-4002A 480V (1o or 3o) 550V, 575V, 600V (3o) 40 54’ 210 UB-4502A 480V (1o or 3o) 550V, 575V, 600V (3o) 45 54’ 210 UB-5002A 480V, 550V, 575V, 600V (3o) 50 54’ 210 IMPORTANT WARNING: Hazard of Electric Shock. Disconnect WARNING: Users

For these tures could cause a fire. applications see Bulletin PDS CXH-EP PF305. MAINTENANCE WARNING: Turn off all power to service heater. Do not 2. Following long periods of idleness, heater should be vacuattempt to service heater while unit is operating as umed before start-up, to remove accumulated combustible par- there is hazard of electric shock, injury from operat-ticles which otherwise may smoke or incinerate on initial heat ing fan, and burns from hot heating elements. up. 3. Periodical

. *Note: Fuse 3A 600V KTK-3 — 128-047763-007 (2) Fuse BLK Barrier — 129-048475-001 (1) Fuse Block — 129-048473-001 (2) RENEWAL PARTS IDENTIFICATION 9 RELAYS Model Volts Phase kW Motor Relay UB-1002E 208 1 10 120V 072-303180-008 UB-1002E 208 1 10 208V 072-303180-014 UB-1002E 208 3 10 120V 072-303180-007 UB-1002E 208 3 10 208V 072-303180-013 UB-1002E 240 1 10 120V 072-303180-008 UB-1002E 240 1 10 240V 072-303180-014 UB-1002E 240 3 10 120V 072-303180-007 UB-1002E 240 3 10 240V 072-303180-013 UB-100

*Wall and/or Ceiling Mounting Brackets are Height Above available as an accessory option — ContactFloor 12-1/4” 8” 6” your local sales representative. Specifications — Rubber Feet Provided for Wall Mount Model Only. 7/8” and 1-23/32” Dia. Holes in Rear 13-3/4” 17-1/8” 20-3/4” 11-3/4”9-5/16” Ceiling Line Wall Back Wall 6” Min. Spacing to Adjacent Wall3” 4-7/8” Min. 11-3/4” 17-11/16” 7’-0” Min. Height Above Floor Mounting Holes Center 10” 8” Figure 2 Mounting UB using Wall Mounting Brackets* Model

Failure to comply can result in explosion or fire. Hazardous area terminal enclosures are available, consult your local Chromalox representative for details. The NWHMTO series is a general-purpose oil circulation heater intended for use indoors. The 3 steel sheathed tubular elements are centered in a 2-1/2” diameter steel heating chamber and welded to a removable screw plug. The assembly is surrounded by 1-1/2” insulation and sheet metal jacket. Depending upon the specifications, the NWHMTO may

MODEL NUMBER DESCRIPTION TABLE 2 CAF-6 B 2 05 11 01 A1 or Refer to CCAS-8 Code Control Options (Factory Installed) Wiring Diagram 00 = No Optional Control A A1 = Built-in SP tamperproof thermostat 120 - 277V C A2 = Built-in DP tamperproof thermostat 120 - 277V E F1 = Built-in SP adjustable thermostat 120 - 277V C F2 = Built-in DP adjustable thermostat 120 - 277V E A4 = Built-in 24V low voltage relay 120 - 277V D A5 = Built-in 24V low voltage relay and transformer 120 - 277V F A8 = Built-in disco

1 & 2 Class II - Groups E, F & G T3B - 165.C (329.F) Table A – Specifications Model kW Voltage and Phase Horiz. Air Discharge (Ft.) BTUH CFM Wt. (Lbs.) Overall Dimensions (In.) 5/8” UNC Tapped Mounting Hole Locations A B C D E CXH-A-03 3 208/240V-1 or 3O 480/575V-3O 28 10,236 700 127 19-1/8 23-7/8 21 3-1/2 13-5/8 CXH-A-05 5 208/240V-1 or 3O 480/575V-3O 28 17,060 700 127 19-1/8 23-7/8 21 3-1/2 13-5/8 CXH-A-07 7.5 208/240V-1 or 3O 480/575V-3O 32 25,590 840 133 19-1/8 23-7/8 21 3-1/2 13-5/8 CXH-A-1

......................... Page ii Dimensions and Panel Cutout .................................................................................................... ........................ 1 Wiring ......................................................................................................................... .................................................. 2 Hardware Setup .................................................................................................................

† These models can be field changed from single phase to three phase or three phase to single phase. © 2010 Chromalox, Inc. IMPORTANT Failure to understand and follow these installation instructions and the “WARNING” notes therein may result in serious personal injury from electrical shock, or from the heater failing due to faulty installation. FIRE/EXPLOSION HAZARD. This heater is not intended for use in hazardous atmospheres where flammable vapors, gases, liquids or other combustible atmospher

DANGER: Hazard of Fire. 2. Do not operate heater in corrosive atmosphere conditions to A. Do not restrict air flow through heater by placing fabric or avoid destructive damage to heater. other obstructions in front of or behind the heater. Increased 3. Avoid operating heater in dusty environment which can foul discharge temperatures can discolor or ignite some heat heater fins to dissipate heat or impair motor ventilation leading sensitive combustible materials. to excessive operating temperatur