Correction Factors; Height Correctiion Factors - Friedrich FPHFR9A3A Service & Parts Manual

Piping length correction factor

Height Correctiion Factors

Indoor unit
Height difference H
Th e correction facto r is base d on the equi valent piping length in feet (EL ) and the height
between outdoor and indoor units in feet (H).
IMPORTANT: Height correction factor is used BEFORE length correction factor.
Height between indoor unit and outdoor unit (ft).
P osition of outdoor unit is higher than position of indoor unit (ft).
Position of outdoor unit is lower than pos ition of indoor unit (ft).
L:
Large pipe,
one way
EL :
Equivalent one -way piping length between indoor unit and outdoor unit (ft).
Gas Diameter
(mm/inch)
90 Elb ow
Cooling
25ft(7.5m )
1
Heating
25ft(7.5m )
1
49

CORRECTION FACTORS

Pipe length L
Outdoor unit
length between indoor unit and outdoor unit (ft).
90 Degree Bend Additional Feet Chart
0.15
32.8ft( 10m ) 49ft(15m )
0.9 5 0.9 0
32.8ft( 10m ) 49ft(15m )
0.9 5 0.9 0
0.2 0.25
66ft(20m )
0. 85
66ft(20m )
0. 85
0.35