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CFA Series
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Direct-Fired Gas Vertical Heaters
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- internal tubular frame
- double wall doors
- rear doors on CFA22 & larger
- G-90 galvanized steel
- weatherproof construction
- hinged service doors with flush-mount latches
- six discharge options
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- FC-DWDI centrifugal blower assembly
- v-belt drive
- 100,000 hour greasable bearings (CFA 18-236)
- permanent lubricated bearings (CFA 10-15)
- solid steel shaft
- split shafts with couplings on twin units
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- wide-range, high capacity line burner
- up to 30:1 turndown ratio
- electric-pilot spark ignition
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- weatherproof enclosure
- easy-access to manifold and controls
- manifold built to required codes
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- weatherproof enclosure
- easy-access to manifold and controls
- exhaust-interlock terminals
- terminal strip for quick service check
- burner and blower service switches
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- standard, high E, open-drip proof with
adjustable motor mount
- v-belt drive
- adjustable drive up to and including 25 HP
- starter with burner interlock
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- standard heavy-duty lifting lugs
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- electronic flame safety controls
- ignition transformer
- airflow proving control
- high-temperature safety controls
- burner and blower service switches
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- Summer-Off-Winter switch
- "Blower on" light
- "Burner on" light
- Other lights available
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Factory assembled, wired, and flame tested
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- Casing
- Blower
- Burner
- Flame Observation Port
- Burner Profile
- Manifold Controls Vestibule
- Electrical Controls Vestibule
- Gas Connection
- Main Fused Disconnect
- Motor
- Lifting Eyes
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- motor-operated parallel blade damper that prevents warm air from escaping
the building through the unit. The motor-damper end switch energizes the
starter circuit when the damper is in the full-open position, and returns
to a closed position during shutdown.
- discharges air in four directions with vertical and horizontal blades,
and is field-installed. The blades can be manually adjusted to set direction
of airflow.
- removable, hinged access door, with a 2-inch washable,
aluminum-mesh filter, or a 2-inch pleated filter. Also available with 1-inch,
1.5 lb density insulation.
- prevents material from entering unit. A 1-inch mesh screen fastens to unit's
fresh-air intake.
- motor-operated parallel blade damper that prevents outside air from entering
the building through the unit. The motor damper end switch energizes the starter
circuit when the damper is in the full-open position, and returns to a closed
position during shutdown.
- 1-inch or 2-inch deep, aluminum mesh, or 2-inch deep, 30% efficient, pleated type;
v-bank, filter section shipped loose for field mounting to the return-air connection.
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- fixed-pitched sheaves are standard on motors 30hp and larger. An
adjustable-pitch motor sheave is provided in lieu of the standard fixed-pitch
sheave.
- adds 1", 1.5 lb density insulation, that is glued and pinned to inner
surface of unit's walls and ceiling, casing liners are standard with this option.
- prevents insulation fibers from being drawn into air stream and discharged
into conditioned space, and prevents physical abuse and moisture damage to insulation.
Made of galvanized steel.
- lubrication lines from blower bearings to a common point on the unit's
exterior. Units with permanently lubricated bearings to be changed to pillow
block-type.
- one coat of beige air-dried enamel over a vinyl wash primer.
- standard on all units ordered with an industrial blower, and
are rated at 100,000 to 200,000 hours; available on smaller units with
standard, permanently lubricated ball bearings.
- mounted on a 1" deflection spring isolated base. A flexible duct
connects the fan outlet to the unit's casing.
- provides burner-profile dampers that automatically maintain the
correct burner velocity. Also dual airflow switches and rate-limiting
control are included to prevent over-firing on low speed.
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