PI-Series Features

Reliable, Efficient System Operation Provided by:

• Double-width, double-inlet, forward-curved Class I,
  AMCA rated centrifugal fan.

• System that does not contaminate heated air with
  combustion by-products.

• Operation of fan only in warm weather to enjoy
  free ventilation cooling.

• Full-floating, stainless steel primary heat exchanger.

• Multiple blowers on tubular steel blower shafts
  (On most models).

• Mounting and wiring of all necessary operating
  starters, relays, switches, safety controls and fuses.

• Variable pitch drive pulley (Up through 10 hp).

• ODP motors with adjustable motor mounts.

Long Lasting Construction Provided by:

• Rugged angle steel base frame on every unit section
  to withstand the rigors of shipping and handling.

• Fabricated sheet panels that virtually eliminate
  rattling or rumbling.

• Extra long life, self-aligning bearings sized for
  industrial duty.

• White painted finish.

• Double-wall heat exchanger module.

Ease of Maintenance Provided by:

• Modular designed sections.

• Convenient access to heat exchangers and blower
  module for field service.

• Optional service platforms on upright units.

PI-Series Benefits

• Discharge air free of combustion
  by-products.

• High efficiency due to three or four
  pass heat exchanger design.

• Longer part longevity: Motors, belts and
  bearings are placed out of the airstream.

• Rugged, heavy-duty construction: Unit cabinet
  is supported by welded steel frame. Casing is
  finish-coated to help protect against corrosion.

• Modular design allows for custom configurations
  to meet customers' needs.

• Evaporative and mechanical cooling packages available.