English
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Condensation may form on the product during COOL
(3)
operation. Be sure to provide (fi eld supplied) and
install a second drain pan.
If installed vertically
If installed horizontally
Second drain pan
Second drain pan
Drain piping
Drain piping
Check if the unit is horizontally level.
(4)
CAUTION
Make sure the unit is installed level using a level: four sides.
•
(One thing to watch out for in particular is if the unit is in-
stalled so that the slope is not in the direction of the drain
piping, this might cause leaking.)
Level
If installed vertically
Level
If installed horizontally
Secure the unit fi rmly to prevent it from falling.
(5)
REFRIGERANT PIPING WORK
5.
〈
Observe the requirements listed below for refrigerant
piping sizes.
〉
Liquid
Gas
3/8 in.
5/8 in.
〈
Execute heat insulation work completely on both sides of
the gas piping and the liquid piping or else a water leak-
age might result.
Failing to insulate the pipes may cause leaking or burns.
And be sure to use the insulation which can withstand
such temperatures of 248°F or more for the gas piping.
Reinforce the insulation on the refrigerant piping accord-
ing to the installation environment. If the temperature or
humidity in the product installation location might reach
86°F or 80%, respectively. Condensation may form on the
surface of the insulation.
〉
CAUTION
Follow the points at below.
Use a tube cutter and fl are suitable for the type of refriger-
•
ant.
To prevent dust, moisture or other foreign matter from infi l-
•
trating the piping, either pinch the end or cover it with tape.
Do not allow anything other than the designated refrigerant
•
to get mixed into the refrigerant circuit, such as air. If any
refrigerant gas leaks while working on the unit, immediately
ventilate the room.
Connect the piping.
(1)
The outdoor unit is fi lled with refrigerant.
•
When connecting or disconnecting piping to or from the
•
unit,
be sure to use two spanners and two torque
wrenches. (Refer to Fig. 3)
Torque wrench
Spanner
Piping union
Flare nut
Fig. 3
01_EN_3P250363-4C.indd 6
01_EN_3P250363-4C.indd 6
12/28/2011 11:51:48 AM
12/28/2011 11:51:48 AM
