How To Use Reducers - Daikin 2MXS18WMVJU9 Installation Manual

How to Use Reducers

• Use the reducers supplied with the unit as described below.
(1) Connecting a pipe of φ1/2 inch (12.7mm) to a gas pipe connection port for φ5/8 inch (15.9mm) :
(2) Connecting a pipe of φ3/8 inch (9.5mm) to a gas pipe connection port for φ1/2 inch (12.7mm) :
(3) Connecting a pipe of φ3/8 inch (9.5mm) to a gas pipe connection port for φ5/8 inch (15.9mm) :
• 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.
Flare nut tightening torque
φ3/8 inch (9.5mm)
φ1/2 inch (12.7mm)
φ5/8 inch (15.9mm)
7
No.1 No.2
φ5/8" φ1/2"
φ1/2" φ3/8"
Gasket (1)
No. 1
Be sure to attach
the gasket.
Connection port of outdoor unit
No. 2
Be sure to attach the gasket.
Connection port of outdoor unit
No. 6 No. 5
Be sure to attach the gasket.
Connection port of outdoor unit
24-1/8 – 29-1/2Ibf • ft (32.7-39.9N • m)
36-1/2 – 44-1/2Ibf • ft (49.5-60.3N • m)
45-5/8 – 55-5/8Ibf • ft (61.8-75.4N • m)
No.3 No.4
φ5/8" φ1/2"
φ1/2" φ3/8"
Gasket (2)
Inter-unit piping
No. 3
Flare nut (for φ5/8 inch (15.9mm))
Flare nut (for φ1/2 inch (12.7mm))
No. 4
Flare nut (for φ3/8 inch (9.5mm))
No.5 No.6
φ5/8" φ5/8"
φ3/8" φ3/8"
Reduce and gasket
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