Drainage Piping Work - Mitsubishi Electric PLA-A BA6 Série Mode D'emploi

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4. Installing the refrigerant piping
,
Fig. 4-3

5. Drainage piping work

Max. 65 ft
5 to 7 ft
Fig. 5-1
7/16
1
1
1
Fig. 5-2
6
4.3. Indoor unit (Fig. 4-3)
Heat insulation for refrigerant pipes:
1 Wrap the enclosed large-sized pipe cover around the gas pipe, making sure that
Refrigerant pipe and
insulating material
2 Wrap the enclosed small-sized pipe cover around the liquid pipe, making sure
Pipe cover (large)
Pipe cover (small)
3 Secure both ends of each pipe cover with the enclosed bands. (Attach the
Refrigerant pipe (gas)
Refrigerant pipe (liquid)
• After connecting the refrigerant piping to the indoor unit, be sure to test the pipe
Band
connections for gas leakage with nitrogen gas. (Check that there is no refrigerant
Cross-sectional view of connection
leakage from the refrigerant piping to the indoor unit.)
Pipe
Insulating material
4.4. For twin/triple combination
Squeeze
Refer to the outdoor unit installation manual.
5.1. Drainage piping work (Fig. 5-1)
• Use VP25 (O.D. ø32 mm, 1-1/4 inch PVC TUBE) for drain piping and provide
1/100 or more downward slope.
• Be sure to connect the piping joints using a polyvinyl type adhesive.
• Observe the fi gure for piping work.
• Use the included drain hose to change the extraction direction.
Max. 6 inch
Grouped piping
(inch)
1. Connect the drain socket (supplied with the unit) to the drain port. (Fig. 5-2)
(Fix the tube using PVC adhesive then secure it with a band.)
2. Install a locally purchased drain pipe (PVC pipe, O.D. ø32mm, 1-1/4 inch).
(Fix the pipe using PVC adhesive then secure it with a band.)
3. Insulate the tube and pipe. (PVC pipe, O.D. ø32mm, 1-1/4 inch and socket)
4. Check that drain fl ows smoothly.
5. Insulate the drain port with insulating material, then secure the material with a
band. (Both insulating material and band are supplied with the unit.)
the end of the pipe cover touches the side of the unit.
that the end of the pipe cover touches the side of the unit.
bands 20 mm, 25/32 inch from the ends of the pipe cover.)
1
Correct piping
2
Wrong piping
A
Insulation (9 mm, 23/64 inch or more)
B
Downward slope (1/100 or more)
D
O.D. ø32 mm, 1-1/4 inch PVC TUBE
E
Make it as large as possible
F
Indoor unit
G
Make the piping size large for grouped
piping.
A
Unit
B
Insulating material
C
Band
D
Drain port (transparent)
E
Insertion margin
F
Matching
C
Support metal
K
Air bleeder
L
Raised
M
Odor trap
H
Downward slope (1/100 or more)
I
O.D. ø38 mm, 1-1/2 inch PVC TUBE for
grouped piping. (9 mm, 23/64 inch or more
insulation)
J
Up to 850 mm, 33-7/16 inch
G
Drain pipe (O.D. ø32mm, 1-1/4inch PVC
TUBE)
H
Insulating material (purchased locally)
I
Transparent PVC pipe
J
O.D. ø32 mm, 1-1/4 inch PVC TUBE
(Slope 1/100 or more)
K
Drain socket

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