Example As 28 Kw - York R-410A Technical & Service Manual

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4.2.5 Example as 28 kW

(1). Selection the refrigerant pipe
Type of pipe
Main pipe
Branch pipe
(2). Selection the dimension of main pipe
Indoor units
No.
below main pipe
(1) main pipe
(2) main pipe
(3) main pipe
(3) Selection the dimensions of branch pipe
Branch pipe
(4) Selection connection method
Outdoor unit
Indoor unit
Branch part( a—c )
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Total kW of indoor units
below main pipe
1#—4# 4x7.1 = 28.4 kW
2#—4# 3x7.1 = 21.3 kW
3#—4# 2x7.1 = 14.2 kW
4-7
Gas side
Welding
Flaring nut
Welding
No.
(1) or (2) or (3)
4—7
A (kW)
22.4≤A<33.0
16.8≤A<22.4
A<16.8
Pipe dimension (Gas/Liquid)
According to 4.2.4
- 251 -
Installation
Pipe dimension
(Gas/Liquid)
Φ22.2 / Φ9.5
Φ19.1 / Φ9.5
Φ15.9 / Φ9.5
Liquid side
Welding
Flaring nut
Welding
Branch joint
YDSA/FQ02
YDSA/FQ01