| Counterflo INDIRECT-FIRED
INDUSTRIAL HEATERS Standard
Equipment
CABINET
Base heater is indoor upright model, fabricated of 16 gauge
Aluminized and/or CRS, heavily reinforced to assure rigidity, and backed by an
internal radiation shield. Cooling air, traveling up both sides of the radiation
shield, keeps the cabinet surface cool. Air inlets are screened. A pressure relief door
and an observation port are provided on the end of the casing where the burner is mounted.
The casing is primed and finished with a coat of enamel.
FAN ASSEMBLY
Fans- Forward curved, DWDI centrifugal fans tested in
accordance with AMCA standards.
Shaft- Cold-rolled steel machined journals with first
critical speed limited to at least 25% above maximum operating speed.
Bearings - 200, 000 Hour Self-aligning, pillow block,
ball/needle bearings.
ENERGY EFFICIENT MOTORS
Three phase, open dripproof type on adjustable mount.
DRIVES
Fixed sheaves with V-belts safely enclosed within the air
intake section.
HEAT EXCHANGER
Primary exchanger, all-welded 14 gauge 400 series stainless
steel, designed for two passes and transfer of 75% of total heat release. Two staggered
sections of black carbon secondary tubes insure maximum combustion efficiency.
FLUE GAS EXHAUSTER
Combustion gas exhaust system includes a heavy-duty exhaust
fan, motor, adjustable V-belt drive and heat slinger.
ELECTRICAL
230/60/3 line current; 115/60/1 control current with
transformer furnished for all voltages.
CONTROLS
Safety Control - Electronic sequencing
burner safety relay with main and pilot flame sensing. Flame rod on gas; photo cell on
oil.
MAIN BLOWER
Air Flow Switch - Prevents burner
operation in the absence of air flow.
Prepurge Timer - Provides for continuous
fan operation and for burner shutdown.
Draft Switch - Insures operation of
exhauster prior to ignition and burner shutdown on loss of draft.
Combustion Air Switch - Prevents burner
operation in the absence of proper combustion air flow. (Not included with all oil
burners.)
Burner Switch - Manually de-energizes
burner circuit.
Blower Starter - Magnetic, three-phase,
across the line.
NEMA 1 Master Control Panel.
Thermostat - Maintains desired space
temperature utilizing On-Off space thermostat (for field mounting and wiring.)
BURNER
Standard burner is On-Off.
Gas (G) - Power type, pilot spark
ignition and main burner pilot ignition for use with natural, manufactured, mixed
liquefied petroleum gas or liquefied gas/air mixture. Included in the manifold
are main gas electric shut off valve with linkage to combustion air damper, main and
pilot gas pressure regulators for maximum inlet pressure of 1 PSI, pilot gas-air
mixer and pilot solenoid valve. Minimum standard entering pressure is 4
ozs.
Light Oil (LO) - High pressure oil
atomizing type with mechanically forced draft suitable for burning fuels
through #2 grade to a maximum of 40 S.S.U. at 100 degrees F. The unit
incorporates an oil pump, combustion air fan and drive, combustion air damper
operator, oil solenoid valve, oil filter and pressure gauge. An oil pressure
regulator is supplied with a pressure system.
Gas/Light Oil (GLO) - Combination
fuel, power burner equipped with components as included with gas burner and light oil
burner described above. Automatic fuel changeover accomplished by means of an
electric toggle switch in the burner control cabinet.
FACTORY TESTED
Factory piped, wired and flame tested. |
