Securing Installation And Service Space; Combining Indoor Units With Outdoor Units; Fixing Hanging Bolts; Installing The Unit - Mitsubishi Electric PEFY-WP15 VMS1-E Installation Manual

3.2. Securing installation and service space

• Select the optimum direction of supply airflow according to the configuration
of the room and the installation position.
• As the piping and wiring are connected at the bottom and side surfaces, and
the maintenance is made at the same surfaces, allow a proper space prop-
erly. For the efficient suspension work and safety, provide a space as much
as possible.

4. Fixing hanging bolts

4.1. Fixing hanging bolts
[Fig. 4.1.1] (P.2)
A Center of gravity
(Give site of suspension strong structure.)
Center of gravity and Product Weight
Model name
PEFY-WP15VMS1-E
PEFY-WP20VMS1-E
PEFY-WP25VMS1-E
PEFY-WP32VMS1-E
PEFY-WP40VMS1-E
PEFY-WP50VMS1-E

5. Installing the unit

5.1. Hanging the unit body

u Bring the indoor unit to an installation site as it is packed.
u To hang the indoor unit, use a lifting machine to lift and pass through
the hanging bolts.
[Fig. 5.1.1] (P.3)
A Unit body
B Lifting machine
[Fig. 5.1.2] (P.3)
C Nuts (field supply)
D Washers (accessory)
E M10 hanging bolt (field supply)

6. Connecting drain pipe

To avoid dew drops, provide sufficient antisweating and insulating work to the
drain pipes.

6.1. Drain pipe specifications

Item

Drain pipe

6.2. Drain pipe
[Fig. 6.2.1] (P.3)
A Drain pipe (O.D. ø32)

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 (excluding the dif-
ference of elevation). If the drain piping is long, provide metal braces to pre-
vent it from waving. Never provide any air vent pipe. Otherwise drain may be
ejected.
• Use a hard vinyl chloride pipe VP-25 (with an external diameter of 32 mm) for
drain piping.
• Ensure that collected pipes are 10 cm 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.
8
W L
625 752
625 752
625 752
625 952
625 952
625 1152
PFFY-WP·VMS1-E
Model
15 · 20 · 25 · 32 · 40 · 50
O. D. ø 20
3.3. Combining indoor units with outdoor
units
For combining indoor units with outdoor units, refer to the outdoor unit installa-
tion manual.
Hanging structure
• Ceiling: The ceiling structure varies from building to one another. For detailed
information, consult your construction company.
• If necessary, reinforce the hanging bolts with anti-quake supporting members
as countermeasures against earthquakes.
* Use M10 for hanging bolts and anti-quake supporting members (field sup-
ply).
X Y
263 338
263 338
263 338
280 422
280 422
285 511
5.2. Confirming the unit's position and fix-
ing hanging bolts
u Use the gage supplied with the panel to confirm that the unit body
and hanging bolts are positioned in place. If they are not positioned in
place, it may result in dew drops due to wind leak. Be sure to check the
positional relationship.
u Use a level to check that the surface indicated by A is at level. Ensure
that the hanging bolt nuts are tightened to fix the hanging bolts.
u To ensure that drain is discharged, be sure to hang the unit at level us-
ing a level.
[Fig. 5.2.1] (P.3)
A Indoor unit's bottom surface
Caution:
Install the unit in horizontal position. If the side with drain port is installed
higher, water leakage may be caused.
[Fig. 6.3.1] (P.3)
Correct piping
Wrong piping
A Insulation (9 mm 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 PVC TUBE
E Make it as large as possible. About 10 cm.
F Indoor unit
G Make the piping size large for grouped piping.
H Downward slope (1/100 or more)
I O. D. ø38 PVC TUBE for grouped piping. (9 mm or more insulation)
J Up to 550 mm
N Drain hose (accessory)
O Horizontal or slightly upgradient
1. Insert the drain hose (accessory) into the drain port (insertion margin:
25 mm).
(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 (small, accessory).)
2. Attach the drain pipe (O.D. ø32 PVC TUBE, field supply).
(Attach the pipe with glue for the hard vinyl chloride pipe, and fix it with the
band (small, accessory).)
Z Product Weight (kg)
105 19
105 20
105 20
104 25
104 25
104 27