Centrifugal Upblast Exhaust Fans
CENTRIFUGAL UPBLAST DIRECT DRIVE EXHAUST FANS

MAIN TECHNICAL SPECIFICATION
- Mode: DU-HFA
- Air Volume: 2 – 24,500 cfm
- Maximum SP: 3.5″ wg. @ standard air density
FEATURES & BENEFITS
- Completely enclosed drive compartment protects motor from airborne contaminants
- Forced fresh air through the motor compartment cools motor and ensures long motor life
- Variable Speed Control on Single Phase Units Only. (VFDs required to adjust speed for 3 phase versions)
- Non-overloading backward inclined wheels, blades and inlets fabricated from aluminum
- Units up to 24″ nominal wheel can be wall mounted
- Quick release latches allow for easy access to motor compartment. (Size 12 & larger)
- Standard emergency disconnect switch (Size 12 & larger)
OPTIONS
- Gravity Damper. (UL705 Only)
- Motorized Damper. (UL705 Only)
- Wall Mount Sleeve.
- Roof Curb. (Vented and Non-Vented)
- Grease Collection Box. (Size 12 & larger)
- Bird Screen. (UL705 Only)
- Base Hinging Kit or Hinged Sub Base. (for NFPA96 compliance)
- Combination package that includes a supply fan mounted on the same roof curb.
Images
CENTRIFUGAL UPBLAST BELT DRIVE EXHAUST FANS

MAIN TECHNICAL SPECIFICATION
- Mode: NCA-FA
- Air Volume: 2 – 24,500 cfm
- Maximum SP: 3.5″ wg. @ standard air density
FEATURES & BENEFITS
- A wide variety of motors are available to meet specific application needs.
- Heavy duty construction, durable and weather resistant.
- Non-overloading backward inclined wheels, blades and inlets fabricated from aluminum.
- Wall mount applications, units up to 24″ nominal wheel can be wall mounted.
- Forced fresh air through the motor compartment cools motor and ensures long motor life.
- Quick release latches allow for easy access to motor compartment.
- Variable pitch motor pulley allows for field adjustment and system balancing.
- High efficiency combined with low tip speeds result in quiet operation.
- Standard emergency disconnect switch.
OPTIONS
- Gravity Damper. (UL 705 Only)
- Motorized Damper. (UL 705 Only)
- Wall Mount Sleeve.
- Roof Curb. (Vented & Non-Vented)
- Grease Collection Box.
- Bird Screen. (UL 705 Only)
- Base Hinging Kit or Hinged Sub Base. (for NFPA96 compliance)
- Extra Set of V-Belts
- Combination package that includes a supply fan mounted on the same roof curb.
Images