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INSTALLATION INSTRUCTIONS
3. Installation of Connection Kit (cont)
Install the mounting brackets on the lifting bolts according to the instruction of the Fig.2
Be sure to follow the stipulations on products locally purchased to use nuts (M8 or M10 of 3 pieces for 4 positions) and
washers (M8 with the outer diameter of 19/20~1-1/10in. and M10 with that of 1-3/20~1-1/3in. of 2 pieces for 4 positions)
on the upper and lower sides of the mounting brackets.
Note:
Be sure that the product is installed with the top surface (the oblique surface in the Fig.2) upward, or it will not work well
and increase the working noise.
Ceiling Mounted
Fig. 2
Washer
(purchased locally)
Mounting Bracket
Double Nuts
(purchased locally)
All-thread Bolt
(purchased locally)
4. Refrigerant pipe Installation
• Pipes between the outdoor unit and connection kit, selection of refrigerant branching suite, and the pipe between
refrigerant branching suites and the indoor units, please refer to the installation instructions or equipment design data
attached to the outdoor unit.
• Before Installation, make sure the type of the refrigerant to be used is R410A. (If a refrigerant other than this type is
used, it cannot run properly).
• Please provide thermal insulation at gas pipe, liquid pipe and the connections between these pipes. In the absence of
thermal insulation, liquid leakage and scalding may happen. Please provide thermal insulation material that can sustain
temperature over 248°F.
• Enhance the thermal insulation material based on the installation environment. The indicators are shown below.
– For RH75%–80% at 86°F: over 3/5in. thick.
– For over 80% at 86°F: over 4/5in. thick.
– If not reinforced, the thermal insulation material surface is prone to condensation. Please refer to the equipment design
data for further details.
• The outdoor unit is already filled with refrigerant.
• To connect the pipes to connection kit or remove them from connection kit, do use
both spanner and torque wrench, as shown in the Fig.1.
• Determine the tightening torque. (Excessive tightening may damage the nuts and
hence cause leakage).
• Check the connecting pipes for gas leakage and then fix the thermal insulation, as
shown in the in the Fig.2.
• Only use sealing washer to wrap the part jointing between the gas pipe and thermal
insulation.
• For pipe cutter and flare tool, please use R410A special tools.
Notes:
• Please do not let any type of gas other than the specified refrigerant go into the refrigeration system;
• In case of refrigerant leakage during operation, please replace the gas. (Fill the refrigerant at the outdoor unit)
14
Wall Mounted
Nut
(purchased locally)
Wall Anchor
(purchased locally)
Double Nuts
(purchased locally)
Washer
(purchased locally)
Connection Kit
Connection Kit
Paste the ether oil here
Torque spanner
Spanner
Pipe joint
Cone nut
Fig. 1
31-5000593 Rev. 0
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