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12
How to use reducers
Use the reducers supplied with the unit as described below.
1) Connecting a pipe of Ø12.7 to a gas pipe connection port for Ø15.9:
2) Connecting a pipe of Ø9.5 to a gas pipe connection port for Ø15.9:
3) Connecting a pipe of Ø9.5 to a gas pipe connection port for Ø12.7:
• When using the reducer packing shown above, be careful not to
over-tighten the nut, or the smaller pipe may be damaged. (about 2/3
- 1 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 over-tightening the flare nut.
Flare nut tightening torque
Flare nut for Ø9.5
32.7–39.9N·m
(333–407kgf·cm)
Flare nut for Ø12.7
49.5–60.3N·m
(505–615kgf·cm)
Flare nut for Ø15.9
61.8–75.4N·m
(630–769kgf·cm)
No.1
Ø15.9
→ Ø12.7
No.2
Ø12.7
→ Ø9.5
No.3
Ø15.9
→ Ø12.7
No.4
Ø12.7
→ Ø9.5
No.5
Ø15.9
→ Ø9.5
No.6
Ø15.9
→ Ø9.5
Gasket (1)
Gasket (2)
Reduce and gasket
No. 1
No. 3
Flare nut (for Ø15.9)
Inter-unit piping
Connection port
of outdoor unit
Be sure to attach
the gasket.
No. 5
No. 6
Flare nut (for Ø9.5)
Be sure to attach
the gasket.
No. 4
No. 2
Flare nut (for Ø12.7)
Be sure to attach
the gasket.
3PEN417620-3N.book Page 12 Friday, June 21, 2019 9:50 AM