34
Installation and Maintenance
Service Manual
Min.allowable length
●
The suggested shortest pipe length is 2.5m,in order to avoid noise from the outdoor unit and vibration. (Mechanical noise and
vibration may occur depending on how the unit is installed and the environment in which it is used.)
●
See the installation manual for the outdoor unit for the maximum pipe length.
●
For multi-connections ,see the installation manual for the multi-outdoor unit.
Unit: mm
4. Boring a Wall Hole and Installing Wall Embedded Pipe
●
For walls containing metal frame or metal board ,be sure to use a wall embedded
pipe and wall cover in the feed-through hole to
●
Be sure to caulk the gaps around the pipes with caulking material to prevent
water leakage.
(1) Bore a feed-through hole of 55mm in the wall so it has a down slope toward the
outside.
(2) Insert a wall pipe into the hole.
(3) Insert a wall cover into wall pipe .
(4) After completing refrigerant piping, wiring, and drain piping, caulk pipe hole gap with
putty.
5. Drain Piping
(1) Use commercial regid polyvinyl chloride pipe general VP 20 pipe, outer diameter 26mm, inner diameter 20mm for the drain pipe.
(2)The drain hose (outer diameter 18mm at connecting end, 220mm long)is supplied with the indoor unit. Prepare the drain pipe picture below
position.
(3) The drain pipe should be inclined downward so that water will flow smoothly without any accumulation.(Should not be trap.)
(4) Insert the drain hose to this depth so it wont be pulled out of the drain pipe.
(5) Insulate the indoor drain pipe with 10mm or more of insulation material to prevent condensation.
(6) Remove the air filters and pour some water into the drain pan to check the water flows smoothly.
Inside
Outside
Caulking
Wall embedded pipe
(field supply)
Wall hole cover
(field supply)
Wall embedded pipe
(field supply)
Φ55 mm
100
Drain hose
10
0
150
Vinyl chloride
drain pipe
50 or more
Reducer
Must be no trap
Do not touch water
350
wall
Refrigerant pipe
45
75
Floor
Unit: mm
CAUTION
