General

• Fabricated with a rigid galvanized steel casing.
• The DIDW centrifugal fans have balanced, galvanized steel, and forward curved blades.
• Single skin galvanized steel casing with 5mm thickness, 27 kg/m3 high-density non-flammable PE insulation.
• An optional return air plenum is available.

Fan Motor Assembly

• Standard galvanized steel fan wheel with optional aluminum fan wheel for low noise application.
• The motor comes with hermetic aluminum alloy casing and permanently lubricated ball bearing.
• The motor has grade B class insulation, with built-in thermal cutout.
• The motor lead-out wires are enclosed by flexible metal conduit, providing protection against damage.
• Low fan speed, provides low noise level during operation.

Coil

• The coil can have 3 or 4 rows, with copper tubes mechanically bonded into corrugated aluminum fin collars.
• Coil pressure test up to 31.6kg/cm2 (450 psig).
• Recommended Max working pressure 18 kg cm2 (250 psig).
• Optional Copper fin or hydrophilic blue fin is available.
• Water inlet / outlet connections are 3/4-inch female pipe thread (BT).
• Header assembly is a one-piece casting, which enables the steel pipe directly.
• A manual air vent is fitted with a drain line to the drain pan to avoid any water drips when venting.

Drain Pan

• The drain pan is 25mm depth with 0.8mm thickness galvanized steel c/w internal epoxy polyester resin coating.
• The drain pan is sloped towards the drainpipe with a 2 deg. gradient.
• The drain pan has one 1/2-inch male pipe thread (BT) connection.
• The standard insulation material is 5mm thickness, 27kg/m3 density PE foam.