Sunlight Supply Samsung Programmable Thermostat for Split Systems - Manual (Page 9)

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(continued...) BASIC INSTALLATION TIPS
The gauge connection on the Samsung units is a 5/16” male, so an adapter is
required to connect a standard North American set of R410A gauges to the
Samsung unit.
R410A REFRIGERANT (continued...)
UNIT LOCATION
High Wall units should be located a minimum of 4ft from the ground. Also, some
of the indoor unit clearances listed in the specific unit installation manuals can
be decreased to a minimum clearance of 2 inches from the ceiling to the top
of the unit, while still maintaining unit performance and efficiency levels.
Indoor Unit:
Ensure that no obstacles are directly in front of the unit for a minimum distance
of
10-12ft on the MAX and Vivace 12,000 BTU units, 20-25ft on the MAX and
Vivace 24,000 BTU units and 25-30ft on the MAX 36,000 BTU unit. This will prevent
bounce back of the conditioned air and will ensure adequate airflow is
maintained, keeping the indoor coil warm and allowing the system to run to
full capacity when necessary.
If any system is prevented from running at full capacity regularly, whether it
is from impeded airflow or over sizing, it will have an adverse affect on the
system’s ability to properly return oil to the compressor. Over time this will cause
inconsistent performance, error codes, and premature failure of components.
Ceiling Cassette units must have a Minimum Distance of 5ft from the louver
opening to any wall or other obstacle for the same reasons as listed above.
Ensure line set runs are adhered to, it is required that a minimum line set length
of 10 ft. be maintained. Exceeding the published maximum line set length is
not permitted, under any circumstance.
Outdoor Unit:
Since these units are heat pumps, you should raise the outdoor unit 4-6” from
the pad/ground to help drain the unit after a defrost cycle. Also, ensure the
unit is capable of operating in desired ambient temperatures. As previously
stated, if the outdoor coil temperature is allowed to drop below 10ºF, the
system will lock out, not restarting until that temperature rises above 14ºF.
Minimum clearances of 6” behind and 24” in front of the outdoor unit must
also be maintained. Enough clearance must be maintained from the sides to
accommodate service of the unit.
Also, keep in mind that since the expansion valve is located in the outdoor
unit, the line set is merely an extension of the indoor coil and, although
insulated, the longer the line set run is, the more likely there will noticeable loss
of capacity.