SiBE12-908
Installation Manual
Installation / Operation Manual
68
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:
2MXU40G
∗
— Up to 6.0kW
2MXU50G
∗
— Up to 8.5kW
:Use a reducer to connect pipes.
Refer to “How to Use Reducers” for information on reducer numbers and their shapes.
How to Use Reducers
Use the reducers supplied with the unit as described below.
• Connecting a pipe of
φ
9.5 to a gas pipe connection port for
φ
12.7:
• 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
overtightening the flare nut.
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 four 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 length are 20mm from the foundation surface.
4
Port
2MXU40G
∗
2MXU50G
∗
A
25, 35
25, 35, 42
B
25, 35
25 , 35 , 42 , 50
No.1
φ
12.7
→φ
9.5
No.2
φ
12.7
→φ
9.5
Gasket (1)
Gasket (2)
Connection port of outdoor unit
No. 1
No. 2
Inter-unit piping
Flare nut (for
φ
12.7)
Be sure to attach the gasket.
20
Flare nut tightening torque
Flare nut for
φ
12.7
49.5–60.3N • m
(505–615kgf • cm)
