How To Use Reducers - Daikin 4MXS68F2V1B Installation Manual

How to Use Reducers

No.1 No.2
φ15.9 φ12.7
→ φ12.7 → φ9.5
Gasket (1)
Use the reducers supplied with the unit as described below.
1) Connecting a pipe of φ12.7 to a gas pipe connection port for φ15.9:
2) Connecting a pipe of φ9.5 to a gas pipe connection port for φ15.9:
3) Connecting a pipe of φ9.5 to a gas pipe connection port for φ12.7:
• 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 overtightening the flare nut.
■English
No.3 No.4
φ15.9 φ12.7
→ φ12.7 → φ9.5
Gasket (2)
No. 1
Be sure to attach
the gasket.
Connection port
of outdoor unit
No. 6 No. 5
Be sure to attach
the gasket.
No. 2
Be sure to attach
the gasket.
No.5 No.6
φ15.9 φ15.9
→ φ9.5 → φ9.5
Reduce and gasket
Inter-unit piping
No. 3 Flare nut (for φ15.9)
Flare nut (for φ9.5)
Flare nut (for φ12.7)
No. 4
Flare nut tightening torque
Flare nut for φ9.5
Flare nut for φ12.7
Flare nut for φ15.9
32.7–39.9N·m
(333–407kgf·cm)
49.5–60.3N·m
(505–615kgf·cm)
61.8–75.4N·m
(630–769kgf·cm)
10