Flare Work - McQuay 5WSS Serie Manual De Instrucciones

• Use either a flare tool specially for R410A or a conventional type. Head project dimension may differ according to type of
flare tool.
• Flare end diameter is also different for R410A. Flare section should be uniform or even. Crack on the flare section or burr
on the flare edge is not acceptable. Make new flare tubing again to prevent potential gas leak.
COPPER TUBE
• Connection service port at the gas valve is 1/2" UNF-20. It is different from the conventional R22 or R407C connec-
tion. This is to prevent wrong refrigerant charging into the system.
• Beware that R410A standard operating pressure is about 1.6 times higher than R22.
Refrigerant Piping Length, Elevation And Bends
• When piping length becomes too long, both the capacity and compressor reliability drop.
• As the number of bends increases, system-piping resistance to the refrigerant flow increase thus lowering the capacity of the
unit and as a result the compressor may become defective.
• Always choose the shortest path and follow the recommendation as tabulated below.
Max. Length, L
Max. Elevation, H
Max. No. of bends
Liquid Valve Size 6.35 mm (1/4")
Gas Valve Size 9.52 mm (3/8")
Max. Length, L
Max. Elevation, H
Max. No. of bends
Liquid Valve Size 6.35 mm (1/4")
Gas Valve Size 15.88 mm (5/8")
Additional Charge
• The pre-charged of R410 in the Water Source Heat Pump unit is suitable for standard pipe of length up:-
a) 2 meter for 5WSS07/10/15/16/20/25/30/40/50AR
b) 5 meter for 5WSS60AR
When the piping is more than the above stated standard pipe length, kindly add additional charge referring to the table below.
HEAD PROJECTION DIMENSION
FLARE DIE
B
COPPER TUBE
D
FLARE NUT
! ! ! ! ! CAUTION
5WSS07AR 5WSS10AR
12 m 12 m
5 m 5 m
10 10
6.35 mm (1/4")
9.52 mm (3/8")
5WSS25AR 5WSS30AR
12 m 12 m
5 m 5 m
10 10
9.52 mm (3/8")
15.88 mm (5/8")
Models
5WSS07AR
5WSS10AR
5WSS15AR
5WSS16AR
5WSS20AR
5WSS25AR
5WSS30AR
5WSS40AR
5WSS50AR
5WSS60AR

FLARE WORK

Diameter
in
1/4
3/8
1/2
5/8
3/4
Diameter, D
in
1/4
3/8
1/2
5/8
3/4
5WSS15AR
12 m
5 m
10
6.35 mm (1/4")
12.7 mm (1/2")
5WSS40AR
35 m
10 m
10
9.52 mm (3/8")
15.88 mm (5/8")
gram/meter
18.5
18.5
18.5
18.5
18.5
18.5
18.5
47.5
47.5
47.5
1-3
A(mm)
Clutch Type
mm
For R410A
6.35 0 – 0.5
9.52 0 – 0.5
12.7 0 – 0.5
15.88 0 – 0.5
19.05 0 – 0.5
Flare End Diameter, B
mm
6.35 9.1
9.52 13.2
12.7 16.6
15.88 19.7
19.05 24.0
5WSS16AR 5WSS20AR
12 m
5 m
10
6.35 mm (1/4") 6.35 mm (1/4")
12.7 mm (1/2") 12.7 mm (1/2")
5WSS50AR 5WSS60AR
35 m
10 m
10
9.52 mm (3/8") 9.52 mm (3/8")
15.88 mm (5/8") 19.05 mm (3/4")
Conventional
Clutch type
0.7 – 1.3
0.7 – 1.3
0.7 – 1.3
0.7 – 1.3
0.7 – 1.3
12 m
5 m
10
35 m
10 m
10