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Nn order to prevent problems before they arise3 carefully read the installation manual provided together
with the equipment before installation5
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prepare work schedule
indoor unit installation
refrigerant piping installation
drain piping installation
duct work
insulation work
electric wiring work
outdoor unit foundation work
outdoor unit installation
refrigerant piping connection
leakage test
evacuation and drying
additional refrigerant charging
maintenance panel installation
trial running and adjustment
hand over
procedure
key points
list the installation work content
drafting of diagram
C control wiring system diagram
C refrigerant piping system diagram
C power wiring system diagram
sleeve installation
pay careful attention to the downward slope of the drain pipe
be sure to check the indoor model in order to avoid any
installation mistakes5 Nf the model has an installation pattern3
attach the pattern to the ceiling to mark the ceiling opening
position and to keep dust away5
make sure that the pipe system is dry3 clean and airtight5 [hen
brazing pipes3 blow out the system with nitrogen5
pipes should have downward slope of at least 868775
make sure that the pipe system is dry3 clean and airtight5 [hen
brazing pipes3 blow out the system with nitrogen5
be especially careful to close off all gaps where connections
are made to the indoor unit and at joints in the branching kit5
Io not forget the drain pipe5
use the 94core shielded wires for the control wires and use
individual power supply for the indoor and outdoor units5
set the switches correctly as indicated in the wiring diagram5
switch settings
make sure the unit is horizontal5
confirm that there should be enough service space and
adequate air flow around the outdoor5 Nndicate the unit model
clearly5
connect the pipes from the building to the outdoor3 and the
pipes between outdoors5
charge the system by nitrogen and keep for 9;hours3 the
system pressure should be ;7kf6cm
9
and without decrease5
Jvacuation the system through the checking joints on liquid
pipe stop valve and on the gas pipe stop valve with V;87F
specially vacuum pump5
record the additional amount added to the system5
confirm the maintenance panel in correct dimension and
position5 Peaving no gaps between the panel and the ceiling5
operate the indoor units one by one3 confirm the wires and the
pipes are correct5