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Installation
• Install the unit horizontally.
• The unit may be installed directly on a concrete verandah or a solid place if drainage is good.
• If the vibration may possibly be transmitted to the building, use a vibration-proof rubber (field supply).
1. Connections (connection port)
Install the indoor unit according to the table below, which shows the relationship between the class of indoor unit and the
corresponding port.
The total indoor unit class that can be connected to this unit:
How to Use Reducers
Use the reducers supplied with the unit as described below.
• Connecting a pipe of φ9.5 to a gas pipe connection port for φ12.7:
Precautions on Installation
• Check the strength and level of the installation ground so that the unit will not cause any operating vibration or noise after installed.
• In accordance with the foundation drawing in fix the unit securely by means of the foundation bolts. (Prepare 4 sets of M8 or M10
foundation bolts, nuts and washers each which are available on the market.)
• It is best to screw in the foundation bolts until their ends are 20mm from the foundation surface.
• When using the reducer packing shown above, be careful not to overtighten
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
φ12.7
49.5–60.3N·m
(505–615kg-
f·cm)
2AMXM40M*
2MXM40M*
2AMXM50M*
2MXM50M*
A
B
20 ,15, 25,35,42,50
20 ,15 , 25 , 35 , 42
20 , 25 , 35
20 ,
15 ,
15 , 25 , 35
2AMXM40M*
2MXM40M*
2AMXM50M*
2MXM50M*
: Use a reducer to connect pipes.
Refer to “How to Use Reducers” for information on reducer numbers and their shapes.
Port
Up to 6.0kW Up to 8.5kW
Heat pump type:
No.1
φ12.7→ φ9.5
No.2
φ12.7→ φ9.5
Gasket (1) Gasket (2)
No. 2
No. 1
Connection port of outdoor unit
Flare nut (for φ12.7)
Inter-unit piping
Be sure to attach the gasket.
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