2
Safety
CAUTION
R-410A specied tools Remarks
1 Gauge manifold Range:HP > 4.5MPa, LP > 2MPa
2 Charge hose Pressure:HP:5.3MPa,LP:3.5MPa
3 Electronic weight for charging R410A No other means permitted
4 Torque wrench
5 Flare tool
6 Copper pipe gauge for adjusting projecting margin
7 Vacuum pump tting
Vacuum pump must be equipped with
check valve
8 Leakage detector Only Helium detector permitted
•
G
rounding wire should be connected with the grounding bar. The grounding wire can not
be connected to the gas pipe, water pipe, lightening rod or the telephone grounding wire.
Improper grounding may cause electric shock.
•
U
nits installed on roof should have appropriate access and handrail.
•
U
se the wrench to fasten the nut and are at proper torque. Excessive torque may cause
ared section to broke leading to refrigerant leakage.
•
A
fter refrigerant pipe installation, please take nitrogen leakage test to avoid refrigerant
leakage.
•
R
-410A is the only permitted refrigerant.
•
T
o avoid mischarging wrong refrigerant, the check valve diameter is changed for R-410A. To
strengthen the pipe, the ared pipe dimension is also changed. Please use R-410A specied
tools as shown below.
•
W
hen charging refrigerant, the refrigerant must be in liquid state from the tank.
•
T
o prevent EMC interference on other appliances, please keep indoor unit, outdoor unit,
power cable and connecting wire at least 1m away from those appliances .
•
F
luorescent lamp (reverse phase or rapid start type) may interfere the remote controller's
signal. Please install indoor unit away from uorescent lamp. The farther the better.
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