Filter
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Air Filter Gauge
Indicates when filters become
dirty. An indicator light may be
wall/beam mounted or provided
with a remote control panel.
Motorized Dampers
Discharge dampers are available
to prevent backdrafts when
the fan is not in operation.
Mixing box dampers are factory
mounted and wired.
Fan Spring Vibration Isolation
Spring vibration isolators are available in lieu of
neoprene isolators for housing sizes H22 and H32
(fan sizes 112 and larger).
115 Volt Service Receptacle
A 115 volt GFCI outlet is mounted externally in a NEMA
3R box for the convenience of field service personnel. A
separate 115 volt power source is required.
Roof Curbs
Factory provided roof
curbs are available to
ensure compatibility
between make-up air
unit and roof curb.
Standard construction is
G90
galvanized steel.
Special Coatings
Greenheck’s Permatector powder paint is available if a
painted look is desired and recommended for outdoor
installations near salt water shorelines. Decorative
baked enamel paints are also available in a variety of
colors to match existing building fixtures. Consult your
Greenheck representative for paint selections.
Weatherhood
A galvanized steel mist eliminating intake hood
is standard on outdoor IGX-HV models. The mist
eliminating intake hood provides a double layer of
protection against moisture entering the mixing box
section.
Propane Gas Conversion Kit
Greenheck’s indirect gas furnaces are ETL listed for
both Natural Gas or LP.
Duct Adapter
Duct adapters are optional with factory supplied curbs
and provide an easy method for attaching ductwork to
the curb.
Double Wall Construction
An interior metal liner is available to isolate insulation
from the airstream. One-inch thick insulation is included
with this option.
Gas Pressure Regulator
Required if building gas line pressure
exceeds IGX-HV maximum inlet gas
pressure of 14 in. wg.
Smoke Detector
A 12/24 VDC Photoelectric smoke detector is available
for duct mounting. Typical operating temperature range
is 32°F to 131°F (0°C to 55°C).
Discharge Diffuser
Available as either 3-way
diffuser for horizontal
discharge or 4-way
diffuser for downblast
discharge.
Airstream Override
This option prevents the discharge air temperature
from dropping below 55°F after the call for heating has
ended.
Warm-Up Control
Available with the TC5
thermostat. The thermostat
may be programmed to
provide a warm-up cycle prior
to the occupied start time. This
ensures immediate comfort
and proper air quality as people enter the occupied
areas.
ACCESSORIES
3-Way Diffuser