7
■
English
How to Use Reducers
• Use the reducers supplied with the unit as described below.
(1) Connecting a pipe of
φ
1/2 inch (12.7mm) to a gas pipe connection port for
φ
5/8 inch (15.9mm) :
(2) Connecting a pipe of
φ
3/8 inch (9.5mm) to a gas pipe connection port for
φ
5/8 inch (15.9mm) :
(3) Connecting a pipe of
φ
3/8 inch (9.5mm) to a gas pipe connection port for
φ
1/2 inch (12.7mm) :
Gasket (1)
Gasket (2)
Reduce and gasket
No.1
φ
5/8”
φ
1/2”
No. 1
No. 3
Flare nut (for
φ
5/8 inch (15.9mm))
Inter-unit piping
Connection port of outdoor unit
Connection port of outdoor unit
Be sure to attach
the gasket.
No. 4
No. 2
Flare nut (for
φ
1/2 inch (12.7mm)
)
Be sure to attach the gasket.
No.2
φ
1/2”
φ
3/8”
No.3
φ
5/8”
φ
1/2”
No.4
φ
1/2”
φ
3/8”
No.5
φ
5/8”
φ
3/8”
No.6
φ
5/8”
φ
3/8”
Connection port of outdoor unit
No. 5
No. 6
Flare nut (for
φ
3/8 inch (9.5mm)
)
Be sure to attach the gasket.
•
When using the reducer packing shown above, be careful not to overtighten the nut, or the smaller pipe may become
damaged. (Apply about 2/3 to 3/3 the normal torque.)
• Apply a coat of refrigeration oil to the threaded connection port of the outdoor unit where the flare nut comes in.
• Use an appropriate wrench to avoid damaging the connection thread by overtightening the flare nut.
Piping size
Flare nut tightening torque
O.D.
φ
3/8 inch (9.5mm)
24-1/8 – 29-1/2ft • Ibf (32.7-39.9N • m)
O.D.
φ
1/2 inch (12.7mm)
36-1/2 – 44-1/2ft • lbf (49.5-60.3N • m)
O.D.
φ
5/8 inch (15.9mm)
45-5/8 – 55-5/8ft • lbf (61.8-75.4N • m)
01_EN_3P537039-1.indd 7
9/12/2018 7:37:43 PM