Greenheck Fan Modular Make-Up Air Unit DGX - Manual (Page 6)

6
ACCESSORIES
Special Coatings
Greenheck’s Permatector™ coating is available for a
durable, long lasting finish. Decorative paints are also
available in a variety of colors to match existing
building fixtures. Consult your Greenheck
representative for paint selections.
Roof Curbs
Factory provided roof curbs are available to ensure
compatibility between the make-up air unit and roof
curb. Standard construction is G90 galvanized steel.
Duct Adapter
Duct adapter is available with factory supplied roof
curbs. The duct adapter allows for easy alignment of
the supply duct connection.
V-Bank Filter Section
V-bank filter sections are available with 2-inch
washable aluminum mesh or 2-inch 30% efficient
disposable filters.
Weatherhood
Three weatherhoods are available: standard
weatherhood includes birdscreen, filtered
weatherhood includes aluminum mesh filters, and
louvered intake hood includes a drainable blade
louver at intake with 2-inch aluminum mesh filters.
Motorized Dampers
Intake or discharge dampers are available to prevent
backdrafts when the supply fan is not in operation.
Intake dampers are factory mounted and wired.
Discharge dampers ship loose for field mounting in the
supply air duct.
Fiberglass Insulation
One inch fiberglass insulation is available to line the
housing to prevent the formation of condensation and
to form an acoustical barrier.
Double Wall Construction
An interior metal liner is available to isolate the 1-inch
fiberglass insulation from the airstream.
Spring Vibration Isolation
Spring blower vibration isolators are available in lieu of
neoprene isolators.
Exhaust Fan Starter(s)
Exhaust fan starters are available factory mounted and
wired. Exhaust fan starters allow for an electrical
interlock between the supply and exhaust fan(s).
Dirty Filter Switch
A dirty filter switch is available to monitor the pressure
drop across the filter section. If the pressure drop
across the filters is higher than the field adjustable
setting, the dirty filter switch trips indicating the need
to clean or replace the filters.
Freeze Protection
Electronic freeze protection is available to
automatically shut down the supply fan when the
discharge temperature is below the adjustable set
point for an extended amount of time. This prevents
the unit from discharging non-tempered air into the
building and freezing pipes and other temperature
sensitive items.
Inlet Air Sensor – Heat
The heating inlet air sensor will automatically turn the
heat on and off based on the outdoor air temperature.
Discharge Diffuser
Discharge diffusers are available as either 3-way for
horizontal discharge or 4-way for downblast discharge.
Service Receptacle
A 115 volt GFCI outlet is mounted externally in a NEMA
3R box for the convenience of service personnel. A
separate 115 volt power source is required.
Auxiliary Contacts
Normally open and normally closed contacts are
available for supply fan status and supply fan
interlocks.
A wide variety of remote control panels are available. Specify the desired combination of switches, thermostats,
temperature selectors and indicator lights. A terminal strip at the unit control center and remote panel simplify
field control wiring.
Basic remote control panel with
thermostat for room temperature
control option.
Remote Control Panels Remote Control Panels
Accessories Accessories
Kitchen style remote panels
feature toggle switches and a
stainless steel face plate for
flush mounting to a wall. The
junction box is also included.