Chigo CS-25V3A-MA114A, Service Manual

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12
Installation Requirements for Multiple Units
1. To install multiple units on the same wall or on the same direction of a
building, all the machines on one floor should be installed on the same level
(based on the level of machine leg), and the transverse spacing shall be kept at
least 60cm or more, as long as the machine performance will not be affected.
2. If there are multiple units on different floors on the same wall or the same
direction of the building, they should be preferably installed on the same
vertical line (based on the left side of the body streamline). To avoid air return
or mutual interference at the outlet, the longitudinal spacing shall be kept at
least 65cm or more.
Requirements for outdoor guardrail (optional): If the user is to install guardrail
for the outdoor unit, the spacing to the machine body must be kept 0.5m or
more.
Insert through
Pipe
Bundle the connection wire to the connection pipe and drainage pipe. (The
connection wire may also be inserted through PVC pipe)
To insert through the pipe, protective measures should be taken to prevent the
expanded bell mouth from damage and prevent the sand from entering the
connection pipe.
Connect to
Machine
Take a connection pipe with expanded mouth, coat frozen oil evenly onto the
connector of the 2-way / 3-way valve and the expanded mouth .
Put the expanded mouth and connector on the same straight line and rotate the
nut to its end with hands, and tighten it with spanner.
Remove the end cover and clip of outdoor connection wire. Then, connect the
wire to position according to color or mark indicated in the wiring diagram.
When the exposed section is fully inserted, use the screw to press it tightly. Do
not cut the round connector at the connection wire end into Y-shape. Fix the
wire with clamp and then fix the end cover of the wire.
Vacuumming
After connecting the pipe between indoor and outdoor unit, it should be
vacuumed with vacuum pump. Operate as follows:
Loosen the nut on low-pressure valve element and filling portal, connect the
vacuum pump to the filling portal by hose with pin, and then start the vacuum
pump. When the indicator gauge points to 15Pa, stop vacuumming and hold
for approx. 30s. Pay attention to the vacuum level. If decreased, be sure to
eliminate the leakage. Repeat the above procedures. When the vacuumming
process is completed, close the vacuum valve and open the high-pressure
valve element for 1/4 turn to fill the refrigerant to the low-pressure section.
Remove the connection hose. Fully open the high-pressure and low-pressure
valves . Tighten the nuts on the valves.