Ruffneck FE2 Series, Developer'S Manual

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SPECIFICATIONS FOR ALL 60 HZ MODEL
2.5 3.7 6.3 8.4 12.5 14.9 20.9 22.4
Nominal kW to 3.0 to 5.0 to 7.5 to 10 to 13.9 to 20 to 21 to 23.1
Max. Altitude (m) 3,658 2,438 3,048 2,134 3,048 2,134 3,048 2,134
(ft.) 12,000 8,000 10,000 7,000 10,000 7,000 10,000 7,000
Air Flow @ 21°C (m3/hr) 850 1444 2973 6116
@ 70°F (CFM) 500 850 1750 3600
Horizontal Air Throw (m) 4.6 9.1 12.2 21.3
(ft) 15 30 40 70
Max. Mounting Height m) 2.1 3.0 3.0 6.1
(to underside) (ft) 7 10 10 20
Motor Power (hp) 1/4 1/2 1/2
(min) (kW) 0.373 0.373 0.373
Motor Speed (RPM) 1725 1725 1725
Fan Diameter (mm) 305 406 508
(in) 12 16 20
Net Weight (kg) 63.5 76 91
(lbs) 140 168 201
Shipping Weight (kg) 88 99 114
(lbs) 194 218 252
Temperature Code Rating T3 (200°C / 392°F)
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. 1725 RPM
Fan Aluminum blade. Steel spider and hub with 5/8 in. (15.875 mm) bore.
Fan Guard Split design with close wire spacing. 1/4in. (6.3 mm) dia. Probe will not enter.
Mounting Holes Four 5/8 in. (15.9 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, 15 VA. (Grounded)
Optional Built-in Thermostat Explosion-proof. 2ºC to 28ºC (36ºF to 82ºF)
Control Transformer Multi-tap primary, 115 V secondary, 50 VA.
Contactor 60 or 80 amp. Rated for 1,000,000 mechanical operations. 120 Volts, 15 VA coil
(separately fuse - protected).
Heat Transfer Fluid Long life formulated ethylene glycol and water
Cabinet Material 14 ga. (1.90 mm) (0.075in.) 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, 0.122 in. (3.1 mm) steel.
Overpressure Protection Preset 100 psig (690 kPa) seep pressure relief valve, aluminum body,
no field serviceable parts.
Operational Temperature Limitations -20ºC to 40ºC (-4ºF to 104ºF)
Storage Limitations -45ºC to 80ºC (-49ºF to 176ºF), short term to 120ºC (248ºF). Do not immerse in water.
Do not store or use in areas exposed to rain or snow.