Greenheck IG / IGX (464104 IOM) (Pre-2009) - Manual (Page 25)

25
Installation - Evaporative Cooling Piping (Optional)
IMPORTANT!
The supply line should be of adequate size and pressure to resupply the amount of water lost due to
bleed-off and evaporation. The drain line should be the same size or larger than the supply line.
CAUTION!
All solenoids, valves and traps must be installed
below the roof to protect the water supply line
from freezing. If they cannot be installed below
the roof, an alternative method must be used to
protect the lines from freezing
IMPORTANT!
The supply solenoid (Valve A) is NOT the same as
the drain solenoids (Valve B and Valve C). Make
sure to use the proper solenoid for each
location. Check your local code requirements for
proper installation of this type of system.
Step 1 Install the Water Supply Line
Connect the water supply line to the float valve in the
unit. Install the
1 ⁄
2
inch normally closed solenoid (Valve
A) in the supply line as shown above. Install the 1 ⁄
4
inch normally open solenoid (Valve B) between the
supply line and the drain line as shown above.
Step 2 Install the Drain Line
Connect an unobstructed drain line to the sump drain.
Install the
3 ⁄
4
inch normally open solenoid (Valve C)
between the sump drain connection and the drain
line. A trap should be used to prevent sewer gas from
being drawn into the unit.
Evaporative Cooling with Auto Drain and Fill
Evaporative Cooling
Section
Supply Line
Sump Overflow
Sump Drain
Drain Line
Valve A
To Water Supply
Valve B
Valve C
6 in. min.
6 in. min.
Installation
NOTE!
The following instructions are provided for evaporative coolers with auto-drain and fill only. Additional
instructions are provided for evaporative coolers equipped with the Water Wizard or bleed-off.