Engineering Manual

A-126
7
CORRECTION FACTORS
Refrigerant piping length (one way: ft.)
25 (std.) 40 65 100
MU-A09WA
MU-A12WA
1.0 0.988 0.967 -
7-1.2 Max. refrigerant piping length & max. Height difference
Model
Refrigerant piping: ft Piping size: in.
Additional piping
Max. length
A
Additional piping
Max. length
B
Gas Liquid
Outside
diameter
Minimum
Wall thickness
Outside
diameter
Minimum
Wall thickness
MU-A09WA
65 35
3/8
0.0315
1/4 0.0315
MU-A12WA
1/2
7-1.3 Additional refrigerant charge (R410A: oz.)
Model
Outdoor unit
precharged
Refrigerant piping length (one way)
25ft 30ft 35ft 40ft 45ft 50ft 55ft 60ft 65ft
MU-A09WA 2lb. 5oz.
0 1.08 2.16 3.24 4.32 5.40 6.48 7.56 8.64
MU-A12WA 3lb. 1oz.
NOTE: Calculation: X oz. = 1.08/5 oz./ft
(Refrigerant piping length (ft) - 25)
7-1. NON INVERTER TYPE
7-1.1 Cooling capacity corrections
Max. Height
difference
B
Additional Piping
Max. length
A
Indoor
unit
Outdoor unit
Refrigerant piping length (one way: ft.)
25 (std.) 40 65 100
MUZ-GL09/12/15NA
MUZ-GL09/12/15NAH
MUY-GL09/12/15NA
1.0 0.988 0.967 -
MUZ-HM09/12/15NA2
SUZ-KA09/12/15NA
MUZ-GL18NA
MUZ-GL18NAH
MUY-GL18NA
1.0 0.985 0.963 0.933
MUZ-HM18NA2
SUZ-KA18NA
MUZ-GL24NA
MUZ-GL24NAH
MUY-GL24NA
1.0 0.983 0.956 0.921
MUZ-HM24NA2
MUZ-D30NA
MUY-D30NA
1.0 0.976 0.937 0.887
MUZ-D36NA
MUY-D36NA
1.0 0.974 0.932 0.878
7-2. INVERTER TYPE
7-2.1 Cooling capacity corrections