User Manual

11
Nominal kW 2.5 3.7 & 4.6 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 @ 21°C (m
3
/hr.) 679 1189 2463 5096
@ 70°F (CFM) 400 700 1450 3000
Horizontal Air Throw (ft.) 13 25 35 60
(m) 4.0 7.6 10.7 18.2
Max. Mounting Height (ft.) 7 10 10 20
(to underside) (m) 2.1 3.0 3.0 6.1
Motor Power (HP) 1/2 1/2 1/2
(min) (kW) 0.373 0.373 0.373
Fan Diameter (in.) 12 16 20
(mm) 305 406 508
Net without (lbs.) 140 168 201
Weight DS5 (kg) 63.5 76.2 91.2
with (lbs.) 152 180 213
DS5 (kg) 78.9 91.6 96.6
Shipping without (lbs.) 194 218 252
Weight DS5 (kg) 88 98.9 114.3
with (lbs.) 206 230 264
DS5 (kg) 93.4 104.3 119.7
Hazardous Location Rating Class I, Groups C and D; Class II, Groups E, F and G;
Temperature Code T3B [165C (329F)]
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 TEFC Arctic Duty. Permanently lubricated ball
bearings.1425 RPM. Comes with mobil grease for low temperature operation.
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 Four 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
Primary automatic reset type, snap-action bimetal, open on temperature rise.
Temperature High-Limit Rated 100,000 cycles at 15 amp, handles 0.128 amps/Secondary automatic reset type,
snap-action bimetal, close on temperature rise. Rated 100,000 cycles at 15 amp, handles
0.128 amps
Breaker Switch Manual reset, thermal-magnetic trip unit. Provides short-circuit protection and thermal
protection.
Control Circuit 120 Volts, 0.128 amps, 15VA. (Grounded)
Optional Built-in Thermostat Explosion-proof.
2 ° C to 28 ° C (36° F to 82 ° F)
Optional Built-in Disconnect Switch DS5 for use only on heaters with total current not exceeding 48-Amps
Lockout handle accepts 1/4” diameter padlock shackle
Control Transformer Multi-tap primary, 120 V secondary, 50 VA
Contactor 75 amps. 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. Optional stainless steel
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) pressure relief valve, aluminum body, no field serviceable 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 expose to rain or snow.
SPECIFICATIONS FOR ALL 50 HZ MODEL