Mitsubishi Electric CITY MULTI PEFY-WL06NMAU-A Manual De Instalación página 12

6. Connecting drain pipes
6.1. Drain pipe specifications
Drain pipe
6.2. Drain pipe
[Fig. 6.2.1] (P.4)
A Drain pipe (O.D. ø32 mm [1-1/4 in])
B Drain pipe (O.D. ø32 mm [1-1/4 in], spontaneous draining)
6.3. Drain piping work
• Ensure that the drain piping is downward (pitch of more than 1/100) to the
outdoor (discharge) side. Do not provide any trap or irregularity on the way.
• Ensure that any cross-wise drain piping is less than 20 m [65 ft] (excluding
the difference of elevation). If the drain piping is long, provide metal braces to
prevent it from waving. Never provide any air vent pipe. Otherwise drain may be
ejected.
• Use a hard vinyl chloride pipe O.D. ø32 mm [1-1/4 in] for drain piping.
• Ensure that collected pipes are 10 cm [3-15/16 in] lower than the unit body's
drain port.
• Do not provide any odor trap at the drain discharge port.
• Put the end of the drain piping in a position where no odor is generated.
• Do not put the end of the drain piping in any drain where ionic gases are
generated.
[Fig. 6.3.1] (P.5)
○ Correct piping
× Wrong piping
A Insulation (9 mm [3/8 in] or more)
B Downward slope (1/100 or more)
C Support metal
K Air bleeder
L Raised
M Odor trap
Grouped piping
D O.D. ø32 mm [1-1/4 in] PVC TUBE
E Make it as large as possible. About 10 cm [3-15/16 in].
F Indoor unit
G Make the piping size large for grouped piping.
H Downward slope (1/100 or more)
I O. D. ø38 mm [1-1/2 in] PVC TUBE for grouped piping. (9 mm [3/8 in] or more
insulation)
J Up to 700 mm [27-9/16 in]
N Drain hose (accessory)
O Horizontal or slightly upgradient
1. Insert the drain hose (accessory) into the drain port (insertion margin: 32 mm
[1-1/4 in]).
(The drain hose must not be bent more than 45° to prevent the hose from
breaking or clogging.)
(Attach the hose with glue, and fix it with the band (accessory).)
2. Attach the drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE PV-25, field supply).
(Attach the pipe with glue, and fix it with the band (accessory).)
3. Perform insulation work on the drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE
PV-25) and on the socket (including elbow).
4. Check the drainage. (Refer to [Fig. 6.4.1])
5. Attach the insulating material, and fix it with the band (accessory) to insulate the
drain port.
[Fig. 6.3.2] (P.5)
A Indoor unit
B Tie band (accessory)
C Visible part
D Insertion margin
E Drain hose (accessory)
F Drain pipe (O.D. ø32 mm [1-1/4 in] PVC TUBE, field supply)
G Insulating material (field supply)
H Tie band (accessory)
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6.4. Confirming drain discharge
► Make sure that the drain-up mechanism operates normally for discharge
O.D. ø32 mm [1-1/4 in]
•
1. Remove the water supply port cover on the same side as the indoor unit piping.
2. Fill water into the feed water pump using a feed water tank. In filling, be sure to
3. Perform the test run in cooling mode, or connect the connector to the ON side of
4. After confirmation, cancel the test run mode, and turn off the main power. If the
and that there is no water leakage from the connections.
Be sure to confirm the above before ceiling work is done in the case of a new
construction.
put the end of the pump or tank in a drain pan. (If the insertion is incomplete,
water may flow over the machine.)
SWE on the Indoor controller board. (The drain pump and the fan are forced to
operate without any remote controller operation.) Make sure using a transparent
hose that drain is discharged.
SWE SWE
OFF ON OFF ON
< OFF > < ON >
connector is connected to the ON side of SWE, disconnect it and connect it to
the OFF side, and attach the water supply port cover into its original position.
SWE SWE
OFF ON OFF ON
< ON > < OFF >
[Fig. 6.4.1] (P.5)
A Insert pump's end 2 to 4 cm [13/16 to 1-5/8 in].
B Remove the water supply port.
C About 2500 cc
D Water
E Filling port
F Screw
[Fig. 6.4.2] (P.5)
<Indoor controller board>