STANDARD CONSTRUCTION
IFG indirect fired gas make-up air units are available in three housing
sizes incorporating seven blower sizes (9” through 20” single
blower units and 10” twin blower units) with air flow capacities
from 800 to 15,000 CFM, heating capacities to 1,200,000 BTU input/960,000
BTU output, and total static pressures up to 4” W.G. The furnaces
used in the Model IFG are AGA & CGA certified and FM compliant.
These fans are offered in a choice of three housing and five curb/mounting
arrangements with two discharge orientations. Construction features
include:
- HOUSING:
- Heavy gauge weatherproof galvanized steel housing
- Downturn plenum
- 1” thick 3# density fiberglass insulation
- Large gasketed access panels with draw-tight tooled fasteners
- Heavy gauge base frame with lifting lugs
- Intake hood with bird screen
- V-bank filter rack
- 1” permanent filters
- BLOWER SECTION:
- Forward curved, double width, double inlet blowers
- Statically and dynamically balanced blower wheels
- Precision machined shafts and sealed ball bearings
- Adjustable motor mount and drives with belt selected for 165%
of motor horsepower
- ODP motor (three phase 1HP and larger are EPACT high efficiency
rated)
- Blower and motor mounted on vibration isolators
- FURNACE SECTION
- Gas controls with spark pilot
- High temperature limit switch
- 409 stainless steel heat exchanger
- Aluminized steel burners
- Natural gas
- Two stage discharge temperature control
Construction/submittal drawings and performance data are available in PDF format, with some drawings in standard (read only) and form (text boxes) format. You will need Acrobat Reader to view and print standard format or Adobe Acrobat to utilize text boxes. Acrobat Reader is available at no charge from the Adobe Website. You will be able to follow the links below to open and view. Use the back arrow to return to this page.
Available Submittal Drawings:
OPTIONS AND ACCESSORIES
- HOUSING
- Flat filter section in intake hood
- Delete intake hood
- Delete downturn plenum
- Foil faced insulation
- Double wall insulation
- Painted housing
- Stainless steel housing
- End discharge
- Top discharge
- Duct adaptor
- Four way discharge head
- Floor rubber in shear isolators
- Floor spring isolators
- Hanger spring isolators
- Dx cooling coil module
- Chilled water coil module
- Evaporative cooling module
- FILTER SECTION
- 2” permanent filters
- 1” disposable filters
- 2” disposable filters
- 1” 30% filters
- 2” 30% filters
- MOTORS
- TEFC
- Two speed, two winding
- Two speed, one winding (three phase)
- Premium efficiency (three phase)
- MOTORIZED DAMPER
- Low leakage opposed blade damper
- Two position spring return actuator
- Intake or discharge mounting
- End switch
- Return air damper with numerous actuator options
- CONTROLS
- Fan disconnect switch (non-fusible or fusible)
- Single point pre-wired motor control center with main fusible
disconnect, starter(s) and fused transformer (located within unit
or remotely)
- Exhaust fan starter
- Remote motor control cabinet
- Remote control panel
- Remote control panel with indicator lights
- Low temperature limit switch (freezestat)
- Mild weather thermostat (inlet air sensor)
- Clogged filter switch with indicator light
- Convenience outlet (service receptacle)
- Time delay relay
- Time clock (seven day)
- Smoke detector
- Variable air volume with frequency drive
- Maxitrol A200 DDC compatible control
- High/low gas pressure switch
- High gas pressure regulator
- Mechanical modulation discharge temperature control
- Electronic modulation discharge temperature control
- Room override thermostat (requires electronic modulation)
- COOLING
- Chilled water coil, ARI 400 tested, copper tubes with aluminum
fins
- Dx coil, ARI 400 tested, copper tubes with aluminum fins
- Evaporative cooling with microprocessor controls
- HEATING
- Propane in lieu of natural gas
- Power venting
- 312 S.S. heat exchanger in lieu of 409 S.S.
- 409 S.S. burners in lieu of aluminized steel
Contact the factory for any other options or accessories not listed.
PERFORMANCE DATA
Model IFG
TYPICAL SPECIFICATIONS
(LINK)
