Ouellet OHX - Manual (Page 3)

3
OHX Specifications By Model Size
OHX General Specifications
Approvals
Certification CSA
C/US
- 235730 - Certified to Canadian and U.S. standards
North American
Hazardous Location
Classifications
Class I, Divisions 1 & 2, Groups C & D
Class II, Divisions 1 & 2, Groups F & G
Temperature Code T3B (35 kW = T3A)
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Class I, Zones 1 & 2, Groups IIA & IIB, T3
Temperature Code
Division System - T3B 165°C (329°F); [35 kW = T3A 180°C (356°F)]
Zone System - T3 200°C (392°F)
Cabinet
Cabinet Material
14-gauge (0.075 in.) (1.9 mm) steel. Red epoxy/polyester powder coated
with five-stage pretreatment, including iron phosphate.
Fan Guard
Split design with close wire spacing. A 3/8 in. (9.5 mm)
diameter probe will not enter. Black polyester powder coated.
Louver Blades Anodized extruded aluminum.
Conduit Materials & Fittings Plated steel and aluminum alloy for corrosion resistance.
Fasteners Zinc plated steel for corrosion resistance.
Enclosures Cast aluminum (non-copper alloy) NEMA Type 7 & 9 with O-ring.
Mounting Holes 9/16 in. diameter holes – Four located on the top face of heater.
Motor/Fan
Motor Type
Explosion-proof, thermally protected, 1725 RPM permanently lubricated ball
bearing type with 56 frame and “easy-off” fan blade replacement feature.
Fan Three-blade aluminum, steel spider and hub with 5/8 in. bore
Heat
Exchanger
Heating Elements Long-life, low watt-density, high grade metal-sheathed elements.
Heat Transfer Fluid Ethylene glycol and water including corrosion inhibitors.
Header Material Carbon steel.
ExCaliber TM Core
Carbon steel shells and carbon steel tubes with copper-free,
roll-formed aluminum fins @ 10 fins per in. Evacuated and sealed. Sprayed
with black, high heat enamel paint.
Protection
Temperature High Limits
One automatic reset rated for 100,000 cycles, and one manual reset. Both
are snap-action bimetal type, open on temperature rise.
Pressure Relief High-quality preset 100 psig (689 kPa) stainless steel pressure relief device.
Controls
Control Circuit Built in 120 V control. Optional 24V control (recommended) is available.
Control Contactor
40 FLA (50 A resistive per pole) Definite Purpose.
Rated for 500,000 mechanical operations.
Control Transformer Multitap primary, 120V or 24V secondary.
Fuse Protection Thermal delay fuse with spare, 1/4 in. x 1 1/4 in., 120V = 1/4 A, 24V = 1 A.
Room Thermostat (optional) Built in, OHX-T explosion-proof thermostat, 40°F to 80°F (5°C to 27°C)
Load
Isolation
Disconnect Switch (optional)
Built-in, OHX-DIS explosion-proof disconnect switch, 600V, 50A max with
lock-out feature. Also available in a wall mount version.
Ambient Temperature -40°F to 104°F (-40°C to 40°C). Storage: -40°F to 140°F (-40°C to 60°C)
Maximum Altitude 10,000 ft (3048 m) above sea level.
Operating
Limits
Model 5 to 10 kW 15 to 20 kW 25 to 35 kW
Fan Diameter in. (mm) 12 (304.8) 16 (406.4) 20 (508.0)
Nominal kW 5 7.5 10 15 20 25 30
Air Delivery CFM 400 600 800 1200 1700 2100 3000
m 3 /hr 680 1019 1359 2039 2888 3568 5097
Approx. Air Velocity FPM 47 718 958 808 1145 916 1309
m/s 2.4 3.6 4.9 4.1 5.8 4.6 6.6
Approx. Horizontal Air Throw ft. 15 22 30 33 46 41 61
m 4.6 6.7 9.1 10.1 14.0 12.5 18.6
Motor Power HP (Watts) ¼ (186) ¼ (186) ½ (373)
Maximum Mounting Height ft. 7 7.5 9.5 10 11 12 15
(to underside of heater) m 2.1 2.3 2.9 3.0 3.4 3.6 4.6
Approx. Net Weight (without disconnect)
Lbs (kg) (with disconnect)
129 (58.5) 133 (60.3) 161 (73.0) 192 (87.1)
142 (64.4) 146 (66.2) 174 (78.9) 205 (92.9)
188 (85.3) 192 (87.1) 224 (101.6) 261 (118.4)
201 (91.2) 205 (93.0) 237 (107.5) 274 (124.3)
Approx. Shipping Weight (without disconnect)
Lbs (kg) (with disconnect)
35