| AFX SERIES AEROFLO HEATER Standard Equipment
CABINET
Indoor floor-mounted model.
Reinforced steel surfaces cleaned and painted with heat and
corrosion resistant industrial enamel. Unit includes four side return air screens and
integral tubular steel structural members for maximum cabinet rigidity.
Low velocity discharge plenum with three sides screened and
deflector.
FAN ASSEMBLY
Fans - Heavy-duty, 10 gauge,
turbine-bladed propeller fans tested in accordance with AMCA standards. Two fans per unit
(AFX-240 through AFX-284), three fans per unit (AFX-360).
Shaft - Cold-rolled steel, machined
journals with first critical speed limited to at least 25% above maximum operating speed.
Bearings - Self-aligning, pre lubricated
pillow block, thrust bearings, extended grease lines.
MOTORS
Three phase, open drip proof type on adjustable mount. Two
motors per unit (AFX-248 through AFX-284), three motors per unit (AFX-360).
DRIVES
Variable pitch sheaves with V-belts safely enclosed within
the air intake section.
HEAT EXCHANGER
Primary exchanger, all-welded 14 gauge #430 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, three phase motor. V-belt, or direct drive and heat slinger or direct drive (60A
chamber).
CONTROLS
Safety Control - Electronic sequencing
burner safety relay with main and pilot flame sensing. Flame rod on gas; photo cell on
oil.
Prepurge Timer - Provides four full
internal air changes prior to ignition.
Fan / Limit Switch - 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. Optional with light oil.
Burner Switch - Manually de-energizes
burner circuit.
Blower Starter - Magnetic, three-phase,
across-the-line.
NEMA 1 Control Box - with dead front
disconnect which manually de-energizes blowers and control circuit.
Thermostat - Maintains desired space
temperature utilizing two stage return air thermostat.
BURNER
Standard burner is Hi/Lo/Off.
Gas (G) - Power type, with 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.
Intake/Discharge Screens - Flattened and
expanded metal screens.
FACTORY TESTED
Factory piped, wired and flame tested.
Options and Accessories
Discharge Plenum Extension - For
installations where additional height is needed to avoid obstructions, or for tall
buildings to insure proper air circulation.
Fresh Air Intake - Motorized damper
mounted in fan-section for minimum outside air.
Stainless Steel Secondary Tubes -
Recommended for units when air temperature rise on low fire is below 20 degrees F.
FM or IRI Controls - Adds controls for
these approvals.
High Gas Pressure Regulator - For inlet
pressures from 1 to 75 PSIG.
Low Gas Pressure Controls - Reduces inlet
gas pressure requirement by 3 inches w.c.
TEFC Motors - Fan, exhauster and burner
motors.
Motor Capacitor - Reduces current draw for
energy conservation.
Energy Efficient Motors - Three phase T
frame motors reduce power demand with subsequent reduced electric rates.
Modulating Burner - 2:1 full modulating
burners are available. Circuit Breaker - in lieu of fused disconnect switch.
NEMA 12 Control Box.
Summer-Winter Switch.
Remote Station - with operating switch and
indicating lights.
Day-Night Operation.
Alarm Light or Audible Alarm.
Lockable Thermostat Access Door.
Flatbank Filters - Throwaways, cleanable
or extended surface (both sides and rear of unit).
Coils - Chilled water or direct expansion
available on most sizes.
U.L. Labeled Control Panels. |
