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RAM Series
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Direct-Fired Gas Horizontal Heaters
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- G-90 galvanized steel
- interlocked wall seam and roof panels
- weatherproof construction
- standing roof seams (RAM 18 and larger)
- single casing construction (RAM 9-230)
- hinged service doors with flush-mount latches
- six discharge options
- double wall doors
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- adjustable profile plates
- optional 80/20 arrangement
- optional two-speed arrangement
- optional VFD arrangement
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- wide-range, high capacity line burner
- up to 30:1 turndown ratio
- electric-pilot spark ignition
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- FC-DWDI centrifugal blower assembly
- v-belt drive
- 100,000 hour greasable bearings (RAM 18-236)
- permanent lubricated bearings (RAM 9-15)
- solid steel shaft
- split shafts with couplings on twin units
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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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- formed G-90 galvanized-steel base
- direct floor or curb mount
- standard heavy-duty lifting lugs
- optional hanging-mount lifting lugs (RAM
9-230)
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- standard, high E, open-drip proof with adjustable motor mount
- v-belt drive
- starter with burner interlock
- adjustable drive up to and including 25 HP
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- weatherproof enclosure
- easy access to manifold and controls
- manifold built to required codes (FM/IRI/FIA)
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- weatherproof enclosure
- easy access to manifold and controls
- exhaust-interlock terminals
- terminal strip for quick service check
- Blower & burner 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
- Burner Profile
- Burner
- Blower
- Burner Observation Port
- Base and Lifting Lugs
- Motor
- Gas Connection
- Main Fused Disconnect
- Manifold Control Vestibule
- Electrical Controls Vestibule
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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. Down discharge arrangement units
available with RAMS exclusive "Hassle Free Damper" internally mounted in unit.
- 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 rain or snow from entering the unit with a 1-inch mesh
screen on hood face; sized to fit unit's fresh-air intake. Shipped
loose to be field installed.
- prevents rain and snow from entering the unit by bringing air into
the bottom of the hood with a 1-inch wire-mesh screen, and is field
installed. Large hoods are shipped separately, and must be field
assembled.
- a separate section with high efficiency filters mounted on the
unit's inlet side. Available with 65%, 85%, or 95% cartridge filters
and inlet-air hood.
- cleanable, aluminum-mesh filters mounted on the inlet-hood face
in lieu of a separate filter section. Not available on RAM-M 227 and
larger models.
- 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.
- 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.
- passes return air across the burner, with outside and return-air mixing
dampers for RAM models only, not available on RAM-M 80/20 System models.
Available with insulated casings, manual potentiometer static pressure
and two-position control, 2-inch cleanable filters, and 2-inch pleated
filters.
- allows access to unit, and is mounted on the unit's control side.
Supplied with guard rails, safety chain and is the same length as the basic
unit.
- same as service platform with longer supports on which to rest the unit
and platform.
- 24-inch roof curb formed of 12-gauge steel; 14-inch curb is also available.
Shipped separately, and must be field assembled. Insulation, cant, and wood nailer
by others
- same as standard curb, with additional length to accommodate a unit
with a mixing section.
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- fixed-pitched sheaves are standard on motors 30 HP and larger. An
adjustable-pitch motor sheave is provided in lieu of the standard fixed-pitch
sheave.
- adds 1", 1.5 lb density insulation 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.
- box-type lifting points replace standard lifting eyes; 1-inch
deflection spring mounts shipped loose for field installation.
- shipped loose for field installation.
- 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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