Model IG / IGX Make-Up Air10
®
6 in. min.
6 in. min.
Drain
Trap
1. Install the Water Supply Line
Supply line opening requirements vary by unit size
and arrangement and are field-supplied. Connect the
water supply line to the float valve through the supply
line opening in the evaporative cooling unit. Install the
1/2inch normally closed solenoid (Valve A) in the supply
line. Install the 1/4 inch normally open solenoid (Valve B)
between the supply line and the drain line as shown.
2. Install the Drain Line
Connect an unobstructed drain line to the sump drain
overflow connection. Install the 3/4 in. normally open
solenoid (Valve C) between the sump drain connection
and the drain line. A
trap must be used to
overcome the internal
negative pressure in the
unit and allow the water
to drain while the unit is
operating.
3. Check/Adjust Water Level
Check the water level in the sump tank. The water
level should be above the pump intake and below the
overflow. Adjust the float as needed to achieve the
proper water level.
Installation - Direct Expansion (DX)
Coil Piping (optional)
1. Locate the Distributor(s) by Removing
the Distributor Access Panel
Distributor Access Panel
IMPORTANT
Guidelines for the installation of direct expansion
cooling coils have been provided to ensure proper
performance and longevity of the coils. These are
general guidelines that may have to be tailored
to meet the specific requirements of any one job.
As always, a qualified party or individual should
perform the installation and maintenance of any coil.
Protective equipment such as safety glasses, steel
toe boots and gloves are recommended during the
installation and maintenance of the coil.
IMPORTANT
All field-brazing and welding should be performed
using high quality materials and an inert gas purge
(such as nitrogen) to reduce oxidation of the internal
surface of the coil.
IMPORTANT
All field-piping must be self-supporting and flexible
enough to allow for the thermal expansion and
contraction of the coil.
2. Verify Nozzle Placement
Inspect the refrigerant
distributor and verify
that the nozzle is in
place. The nozzle is
generally held in place
by a retaining ring or is
an integral part of
the distributor itself.
Retainer
Ring
Nozzle Distributor
Nozzle Placement
To Next Page
Loading...
Need help?
General