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Drainage Piping Work (Fig. 5-1) - Mitsubishi Electric Mr.Slim PKA-RP FAL Series Installatiehandleiding

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4. Installing the refrigerant piping
1
E
1110
B
25
B
Fig. 4-3
2
F
G
H
30
37
74
Fig. 4-4
3
J
M
Fig. 4-5
Gas pipe
Band (small) 4
Thermal insulating
material for liquid pipe
Thermal insulating
material for
refrigerant piping
Fig. 4-6

5. Drainage piping work (Fig. 5-1)

On-site drain pipe
Drain socket
Felt tape 5
Drain pipe
Fig. 5-1
6
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C
D
D
55
B
A
120
183
C
111
I
30
39
98
32
37
74
340
K
J
L
Liquid pipe
Band (large) 4
Insulation material 3
Band (small) 4
Tape
Liquid pipe
Unit's drain pipe
Apply PVC adhesive
Liquid pipe
Gas pipe
4.3. Positioning refrigerant and drain piping
1 Position of refrigerant and drain piping (Fig. 4-3)
2 Determine the position of the knockout holes on the unit body (Fig. 4-4)
• Make the knockout holes using a saw blade or an adequate knife.
Caution:
The side panel must be removed before drilling a knockout hole in it.
If a hole is made with the side panel in place, the refrigerant pipe within the unit
could be damaged.
3 L-shaped connection pipe (for gas piping) (Fig. 4-5)
A 107 mm (60,71), 102 mm (100)
H For lower-side piping
B Drain hose
I For right-side piping
C Liquid pipe
J L-shaped connection pipe (option)
D Gas pipe
K Unit side
E Drain hose in left-side piping
L On-site piping side
F Knockout holes on the unit body
M Piping
G For left-side piping
4.4. Refrigerant piping (Fig. 4-6)
1) Indoor unit
Caution:
Before connecting right, lower, left or left rear piping, connect the supplied L-
shaped connection pipe B to the on-site piping.
• Drain pipes should have an inclination of 1/100 or more.
• Use PVC pipe VP-20 (O.D. ø26 PVC TUBE) for drain piping.
• Drain pipes can be cut with a knife at the connection point according to the on-site
conditions.
• When connecting the VP-20, use adhesive to attach the supplied drain socket.
• To prevent dripping condensation, put felt tape 5 over the insulation materials on
the refrigerant and drain pipes within the unit as shown in the diagram.
Caution:
The drain pipe should be installed according to this Installation Manual to en-
sure correct drainage. Thermal insulation of the drain pipes is necessary to
prevent condensation. If the drain pipes are not properly installed and insu-
lated, condensation may drip on the ceiling, floor or other possessions.

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