Table of Contents
Advertisement
Floor Ceiling Air-Conditioning Unit
4.5.2 Additional Charge
Refrigerant suitable for a piping length of 5m is charged in the outdoor unit at the factory.
When the piping is longer than 7 m, additional charging is necessary.
For the additional amount, see Table 9.
Model
31VA024C24
31VA036C24
31VA048C24
31VA060C24
4.6 Installation of the Drain Pipe
4.6.1 Precautions When Doing the Piping Work
(1) Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so
that air may not remain trapped inside the pipe.
(2) Keep pipe size equal to or greater than that of the connecting pipe.
(3) Install the drain piping as shown and take measures against condensation. Improperly
rigged piping could lead to leaks and eventually wet furniture and belongings.
Extension drain piping
(commercially available)
(4) Connect the drain hose.(Fig.20)
Table 9
Item
Additional Refrigerant Amount for Extra Pipe Length
Insulating tube
(commercially
available)
54 g/m
54 g/m
54 g/m
110 g/m
Insulating tape
(accessory)
Fig.19
Drain hose must
slope downward.
Allow no trap to
form in the piping
Do not allow end
of hose to touch
water
Fig.20
16
Indoor unit
drain hose
Advertisement
Table of Contents
