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Installation of Evaporative Cooling
Module (optional)
NOTE
Small evaporative coolers ship attached to the base
unit and require no additional mounting.
1. Locate Equipment Support(s)
Position equipment support(s)
on the roof; reference the
CAPS submittal for placement
of equipment support(s) in
relation to the unit. Verify that
all unit supports are level; shim
if necessary. Attach equipment
support to the roof, remove metal cover,
flash to wooden nailer, and reinstall cover.
2. Apply Sealant
Apply an appropriate sealant around the
airstream opening to create an air tight seal.
3. Set Evaporative Cooling Module
Use a crane and a set of spreader bars hooked
to the factory lifting
lugs to lift and center
the module on the
equipment support(s).
The flange on the
evaporative cooler
should overlap the
flange on the unit.
NOTE
The use of all lifting lugs and a set of spreader bars is
mandatory when lifting the evaporative cooling module.
4. Secure Cooling Module to Unit
Use self-tapping screws to
fasten the cooling module
to the base unit along the
top and down both sides.
Fasten at the top through
the flanges. To fasten the
sides, the media must be
removed. To remove the
media, first remove the access panel on the evaporative
module and disconnect the evaporative pump(s). The
media will now slide out. With the media removed, you can
access the side fastening points inside the evaporative
module. With all the screws in place, reinstall the media,
reconnect the pumps, and reinstall the access panel.
NOTE
When mounting the evaporative cooler, it is important
that the evaporative cooler is level to ensure proper
operation and water drainage.
®
Metal Cover
Equipment
Support
Equipment Support
Sealant
Placing Evaporative Module
Securing Evaporative Module
Installation of Furnace Connections
Refer to separate furnace Installation, Operation and
Maintenance Manual for detailed information about
installation of furnace venting and gas piping.
Installation - Electrical Wiring
Before connecting power to the unit, read and
understand the following instructions and wiring
diagrams. Complete wiring diagrams are attached on
the inside of the control center door(s).
All wiring should be done in accordance with the latest
Sealant
edition of the National Electrical Code ANSI/NFPA 70
and any local codes that may apply. In Canada, wiring
should be done in accordance with the Canadian
Electrical Code.
If replacement wire is required, it must have a
temperature rating of at least 105ºC, except for energy
cut-off or sensor lead wire which must be rated to
150ºC.
The equipment must be properly grounded. Any
wiring running through the unit in the airstream must
be protected by metal conduit, metal clad cable, or
raceways.
High voltage electrical input is needed for this
equipment. This work should be performed by a
qualified electrician.
Any wiring deviations may result in personal injury or
property damage. Manufacturer is not responsible
for any damage to, or failure of, the unit caused by
incorrect final wiring.
Manufacturer's standard control voltage is 24 VAC.
Control wire resistance should not exceed 0.75 ohms
(approximately 285 feet total length for 14 gauge
wire; 455 feet total length for 12 gauge wire). If the
resistance exceeds 0.75 ohms, an industrial-style,
plug-in relay should be wired in place of the remote
switch. The relay must be rated for at least 5 amps
and have a 24 VAC coil. Failure to comply with these
guidelines may cause motor starters to chatter or not
pull in, resulting in contactor failures and/or motor
failures.
IMPORTANT
IMPORTANT
CAUTION
IMPORTANT
DANGER
CAUTION
IMPORTANT
Model IG / IGX Make-Up Air
7
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