Install Manual

5.2 Air Filtering
To maintain good i ndoor air quality i n a tight building, the air distribution system should have a
high-efficiency air filter. To ensure proper unit operation, be sure to i nform the building owner of
the i mportance of proper maintenance and the maintenance schedule for checking/changing the
filter i nstalled. Most air filters require monthly attention.
5.3 Construction / Remodeling
The Geocool unit should NEVER be run during any kind of construction or remodeling that
would allow drywall, hard wood, or any kind of dust to be pulled i n the system. Even with extra
filtering dust particles can accumulate i n the duct system causing unwanted dust for years to
come. It can also cause air coil clogging, condensate drain clogging, blower dust accumulation
and many other problems to the system. Running the system during construction / remodeling
will VOID the system warranty
6.0 The Ground Loop System
6.1 Closed Loop Systems Plumbing
IMPORTANT! Do NOT use PVC or CPVC piping on any connections to your Geocool unit. The
only exception where PVC or CPVC piping may be used i s on the condensate l ines.
Closed l oop systems will require a minimum of 3 G.P.M. per ton i f the ground l oop i s designed
to maintain a l oop temperature above 32ºF and below 90ºF. If design temperatures are outside
of these temperatures more flow will be needed.
On residential units, a pump i s typically required for each unit. The l oop pump requirement will
depend upon the l oop design for a given application. The ground l oop piping system must
provide suitable access for purging the outside l oop and require i solation valves for purging the
inside plumbing i ncluding the unit. To properly purge a closed l oop system, a minimum velocity
of 2 feet per second i n every branch of the ground l oop must be achieved. The purge ports can
also be used for anti-freeze charging.
IMPORTANT NOTICE: UNITS THAT UTILIZE GROUND LOOPS MUST MAINTAIN A MINIMUM
OF 20% METHANOL OR 25% PROPYLENE GLYCOL AS AN ANTIFREEZE SOLUTION IN THE
UNIT AND GROUND LOOP AT ALL TIMES. FAILURE TO DO SO WILL FREEZE THE SYSTEM
AND CAUSE SEVERE DAMAGE TO THE UNIT. DAMAGE TO THE UNIT CAUSED BY THE
FAILURE TO MAINTAIN PROPER ANTIFREEZE LEVELS IS NOT COVERED UNDER THE
WARRANTY.
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