Piping Length Factor Chart - Friedrich FPHMR18A3A Service Manual

Piping Length Factor Chart

The correction factor of height between each indoor unit and outdoor unit
16ft(5m) 32.8ft( 10m) 49ft(15m) 66ft(20m ) 82ft(25m ) 98ft(30m )
1.0 0.95
To ensure correc t unit selec tion, co nsider the farthest indoo r unit.
NOT E :
1. The above data re ects that the minimum height requirements have been meet or exceeded
during the installation. The
at 0ft/0m. Using reference chart above to calculate proper unit capacity.
2. Be sure to minimize length of connection pipes to optimiz e performance. If the outdoor unit is
installed higher or lower than the indoor unit, it is necessary to apply height correction factor
additionally to length correction factor to calculat e cooling/heating.
If outdoor unit is higher, correction shoul d be applie d to cooli ng capacity, if outdoor unit is lower,
correction should be applied to heatin g capacity.
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CORRECTION FACTORS
0.88 0.8
height di erence between the indoor and outdoor unit is based
0.75 0.7