20
Connection between Indoor and Outdoor Units
When it is needed to cut the Branching pipe, please cut from the middle of given connection pipe and
remove the burrs.
Cut from the middle
Fig. 16
CAUTION:
● Each pipe for VRF air conditioner system shall be attached with a label to identify the system to which the
pipe belongs, and thus avoid wrong connection.
● A straight pipe 280mm long at least shall be guaranteed on the inlet side of Branching pipe.
● Installation of protection layer on connection pipe
1. To avoid condensing or leakage, the gas pipe and liquid pipe must be wrapped with thermal insulation
materials and adhesive tapes for isolation from the air.
2. The connector between indoor unit and outdoor unit shall be wrapped with thermal insulation materials,
and shall have no clearance to the wall surface, as shown below.
Fig. 17
CAUTION: When the pipe is well protected, never bend the pipe to very small angle;
otherwise the pipe may be cracked or broken.
3. Wrap the pipe with tapes:
Use plastic tapes to bundle the pipes and cables together. To prevent the condensate water from
overflow out of the drainage pipe, the drainage pipe shall be separated from the connection pipe and
cables.
When wrapping the thermal insulation tape, each circle shall suppress half of the previous circle.
☆
The wrapped harness shall be fixed on the wall with pipe clamp.
CAUTION:
Never wrap the protective tape too tight, as this will reduce the effect of thermal insulation. Make sure
that the condensate drainage pipe has been separated.
After completing the protection work and wrapping the pipes, use the sealing materials to block the holes
in the wall.
●
Connection of indoor and outdoor communication wires
Open the electric box of indoor unit and outdoor unit, and insert the distribution wire (communication)
through cable-cross hole into the electric box. The indoor unit and outdoor unit must be connected
according to the circuit diagram attached on the machine (Refer to the electrical wiring of the indoor unit
and outdoor unit). For the power cable sizes, please select in reference to the power capacity and
installation environment of the machine. Check to ensure no error. After that, use the cable clamp to press
No clearance
Summary of Contents for GMV-Pds100W/Na-K
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