Greenheck Fan 470656 manual Start-Up Evaporative Cooling optional

Start-Up - Evaporative Cooling (optional)

Bleed-Off	Pump	Supply	Float	Threaded Float
Valve	Filter	Connection	Valve	Adjustment

1. Check the Installation

The media may have been removed during installation, so its orientation should be double checked. The media Entering Air should be installed

with the steeper flute angle sloping

down towards the entering air side.

45º

Leaving Air

15º

Overflow

Evaporative Cooler Set-Up

Verify that the stainless steel caps and distribution headers are in place. The headers should be located over the media towards the entering air side. The caps should be placed over the headers.

2. Check the Pump Filter

Check that the pump filter is around the pump inlet.

3. Fill the Sump and Adjust the Float

Turn on the water supply and allow the sump tank to fill. Adjust the float valve to shut-off the water supply when the sump is filled to within 1 in. of the bottom of the overflow.

4. Break-In the Media

Open the bleed-off valve completely and saturate the media with the blower(s) off for no less than 20 minutes.

Note

A jumper will need to be installed in the control center to power the evaporative pumps with the blower(s) off. Reference the unit’s ladder diagram to determine proper terminals.

5. Check the Flow Rate

The pumps should provide enough water to saturate the media in 45 to 60 seconds. Consult the factory, if adequate flow is not achieved.

6. Adjust the Water Bleed-Off Rate

The water bleed-off rate is dependent on the water’s mineral content. The bleed-off should be adjusted based on the media’s mineral deposits after two weeks of service.

7. Set the Optional Auto Drain and Fill

Set the auto drain, fill timer and temperature settings. Temperature is typically set to 45ºF / 7ºC

Timer settings are: t1: 1.0, 10min t2: 0.4, 60h

8. Put the Unit into Service

Remove the jumper, and energize the blower(s). Verify proper operation.

important

Check the media for minerals after two weeks of service and adjust the bleed-off rate accordingly.

®

Temperature

Setting

t2 settings

t1 settings

Evaporative Freeze	Evaporative
Protection	Timer

Model IG / IGX Make-Up Air 33