FVXS Installation Manual

7 ■English
Indoor Unit Installation
2. Drilling a wall hole and installing wall embedded pipe
WARNING
For metal frame or metal board walls, be sure to use a wall embedded pipe and wall hole cover in the feed-through hole to
prevent possible heat, electric shock, or re.
• Be sure to caulk the gaps around the pipes with caulking material to prevent
condensation.
1) Drill a feed-through hole with a φ2-9/16 inch (65mm) diameter through the
wall at a downward angle toward the outside.
2) Insert a wall embedded pipe into the hole.
3) Insert a wall hole cover into wall pipe.
4) After completing refrigerant piping, wiring, and drain piping, caulk the pipe
hole gap with putty.
Inside
Outside
Caulking
(field supply)
Wall embedded
pipe
(field supply)
Wall hole cover
(field supply)
φ2-9/16”
(65mm)
3. Drain piping
• The drain pipe should be inclined downward so that water will ow smoothly
without any accumulation. (Should not be trap.)
No trap is permitted.
The drain pipe should
be inclined downward.
Do not put the end
of the hose in water.
• Use commercial rigid polyvinyl chloride pipe (general VP 20 pipe, outer diameter 1 inch (26mm), inner diameter 13/16
inch (20mm)) for the drain pipe.
• The drain hose (outer diameter φ11/16 inch (φ18mm) at connecting end, 8-11/16 inch (220mm) long) is supplied with the
indoor unit.
1) Perform drain piping work as outlined in the gure. (See Fig. 1)
• Insert the
C
drain hose into the socket of the drain pan. (See Fig. 2)
Fully insert the drain hose until it adheres to a seal of the socket.
2) Insulate the indoor drain pipe with 3/8 inch (10mm) or more of insulation material to prevent condensation.
3) Remove the air lters and pour some water into the drain pan to check the water ows smoothly.
1-15/16
(50) or more
8-11/16 (220)
5-7/8
(150)
3-15/16
(100)
3-15/16 (100)
Reducer
Vinyl chloride
drain pipe
(VP-30)
Vinyl chloride
drain pipe
(VP-20)
Drain hose
C
unit: inch (mm)
Insert drain hose
to this depth so
it won’t be pulled
out of drain pipe.
Drain
pan
Drain pan
Seal
Seal
Drain hose
C
Drain hose
C
Fig. 1 Fig. 2
CAUTION
Use polyvinyl chloride adhesive agent for gluing. Failure to do so may cause water leakage.
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