Ruffneck FX4 Series, Installation, Operation & Maintenance Instructions Manual

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SPECIFICATIONS FOR ALL 50 Hz MODEL
kW 2.5 3.7&4.2 6.3&7.5 8.4 12.5&12.6 14.9&16.7 20.9 22.4
Max. Altitude (ft.) 12,000 8,000 10,000 7,000 10,000 7,000 10,000 7,000
(m) 3,658 2,438 3,048 2,134 3,048 2,134 3,048 2,134
Air Flow @70°F
@21°C
(CFM) 400 700 1450 3000
(m3/hr.) 679 1189 2463 5096
Horizontal Air Throw (ft.) 13 25 35 60
(m) 4.0 7.6 10.7 18.2
Max. Mounting Height
(to underside)
(ft.) 7 10 10 20
(m) 2.1 3.0 3.0 6.1
Motor Power (HP) 1/2 1/2 1/2
(kW) 0.373 0.373 0.373
Fan Diameter (in.) 12 16 20
(mm) 305 406 508
Net Weight (lbs.) 131 153 192
(kg) 59.5 69.5 87.3
Shipping Weight (lbs.) 180 202 241
(kg) 81.8 91.8 109.5
Temperature Code Rating T3B 165°C (329°F) Class I & II
Enclosures NEMA Type 7 & 9. For dry, indoor use only. Do not immerse in water. Do not store or use in areas
exposed to rain or snow.
Motor Type Explosion-proof. Thermally protected Permanently lubricated ball bearings. 1425 RPM.
Fan Aluminum blade. Steel spider and hub with 5/8 in. (15.875 mm) bore.
Fan Guard Split design with close wire spacing. 1/4 in. (6.3 mm) dia. probe will not enter.
Mounting Holes Two 9/16 in. (14.3 mm) diameter holes at top of heater.
Heating Elements Three long-life, low watt-density, high grade metal-sheathed elements.
Temperature High-Limit Automatic reset type, snap-action bimetal, open on temperature rise. Rated 100,000 cycles at 10
amps, handles 0.130 amps.
Control Circuit 115 Volts, 0.130 amps, 15VA. (Grounded)
Optional Built-in Thermostat Explosion-proof. 2°C to 28°C (36°F to 82°F)
Control Transformer Multi-tap primary, 115 V secondary, 25 VA.
Contactor 40 or 75 amp. Rated for 500,000 mechanical operations. 120 Volts, 15VA coil (separately fuse-
protected).
Heat Transfer Fluid Long life formulated propylene glycol and water.
Cabinet Material 14 ga. (0.075 in.) (1.90 mm) steel. Epoxy coated with five-stage pretreatment, including iron
phosphate.
Core Steel with integral aluminum fins, vacuum charged and hermetically sealed.
Conduit Material Heavy walled, 0.1222 in. (3.1 mm) steel.
Overpressure Protection Preset 100 psig (690 kPa) seep pressure relief valve, aluminum body, no field servicable parts.
Operational Temperature Limitations -20°C to 40°C (-4°F to 104°F)
Storage Limitations -45°C to 80°C (-49°F to 176°F), short term to 120°C (248°F). Do not immerse in water. Do not store
or use areas exposed to rain or snow.