Evaporative Cooling - Greenheck IGX Installation, Operation And Maintenance Manual

Installation Instructions for:
Optional Evaporative Cooling Section
When mounting this section, it is important that it is level to ensure proper operation and water drainage.
Piping should be of adequate size to provide sufficient supply of water to meet the maximum demand of the
unit.
Field Installation
1. Evaporative cooling sections for housing 32 units ship
separately. After the base unit and the equipment support
rail is installed, the evaporative cooing section may be
installed. This section must be installed level for proper
operation.
A weather tight seal is required between the evaporative
cooling section and base unit. Apply a heavy bead of
caulk around the airstream opening to create weather
tight seal. Using a spreader bar and factory lifting lugs
(see Figure 11), lift and center the cooling section on the
equipment support. Make sure that the U-shaped flange
on the evaporative cooling section fits over the flange of
the base unit.
Use self tapping screws to fasten the cooling section to
the base unit along the top and down both sides (see
Figure 11). Fasten at the top through the flanges. Fasten
along the sides from inside the cooling section. Remove
cooling section access doors and evaporative media for
access to the side fastening points.
Start-Up Instructions:
Optional Evaporative Cooling
1. After the unit is set in place, run the overflow and
drain lines to the exterior fittings on the unit. The
supply line can be attached at the downstream
side of the evaporative section. A manual shut off
valve should be mounted in the supply line near
the unit for servicing purposes. The drain line
should have an air vent for clean out purposes.
Also, a trap should be installed in the drain line to
prevent sewer gas from being drawn into the unit
(see Figure 12).
2. The cooler will be prewired by the factory. Housing

Evaporative Cooling

Section
Shutoff Valve
Figure 11: Evaporative Installation
Supply
Overflow
Manual
Drain Line
size 32 units ship in separate sections and will
need to be field wired to the 2 x 4 handy box in the
cooling section. Wires should be run in a metal
conduit from terminals 1 and 10 to the junction
box.
3. Check to make sure that the pump filter is around
the pump inlet.
4. Turn the water on and allow the pan to fill up with
water. The float should be adjusted to provide 2
inches of water depth in the sump.
28 28
Line
Manual Shutoff
Valve
Trap
Figure 12: Evaporative Piping