Service manual

Installation
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4.2.5 Example as 28 kW
(1). Selection the refrigerant pipe
Type of pipe No.
Main pipe (1) or (2) or (3)
Branch pipe 4—7
(2). Selection the dimension of main pipe
No.
Indoor units
below main pipe
Total kW of indoor units
below main pipe
A (kW)
Pipe dimension
(Gas/Liquid)
Branch joint
(1) main pipe 1#—4# 4x7.1 = 28.4 kW 22.4≤A<33.0 Φ22.2 / Φ9.5
(2) main pipe 2#—4# 3x7.1 = 21.3 kW 16.8≤A<22.4 Φ19.1 / Φ9.5
YDSA/FQ02
(3) main pipe 3#—4# 2x7.1 = 14.2 kW A<16.8 Φ15.9 / Φ9.5 YDSA/FQ01
(3) Selection the dimensions of branch pipe
Branch pipe Pipe dimension (Gas/Liquid)
4-7 According to 4.2.4
(4) Selection connection method
Gas side Liquid side
Outdoor unit Welding Welding
Indoor unit Flaring nut Flaring nut
Branch part( a—c ) Welding Welding