Instructions / Assembly

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Step 6: Check Line Set Connections &
Valves for Leaks
1. After connecting the line set and opening the
condenser refrigerant valves, you will now need
to check all of the piping connections & valves
for leaks. You can do this by using leak detection
spray, or applying a soapy water solution (liquid
detergent/water mixture) to the connection via a
spray bottle or brush. If any bubbles begin to
form, that indicates there is a leak, and the
connection needs to be re-tightened. Tighten
the connection and recheck it for leaks. Refer to
Electrical and Gas Leaks Checks section of
this manual for more detailed information.
IMPORTANT:
You will be asked to check for leaks at the
piping connections multiple times
throughout the following steps of the
installation, because the pressures within
the lines will change once the unit is turned
on and this could reveal leaks not present
during the initial check. These are
imperative to make sure your connections
are not allowing refrigerant to escape the
system. When checking for leaks, if any
bubbles form, it indicates the system has a
leak and the screw connector needs to be
retightened. For more information about
checking for leaks, please refer to the
Electrical and Gas Leak Checks section of
the manual.
Outdoor Unit Installation
IMPORTANT!
Once the entire installation has been
completed and the system has been
fully tested, the area above and
around the cassette should be
re-insulated. This will help to guard
against the condensation/sweating of
the unit that can occur due to the
differences in the room temperature
the cassette provides air to and the
environment it is installed in
(example: attic). If the area is not
re-insulated it could cause property
damage and the system to
malfunction!