Mitsubishi Electric PUHY-RP-Y(S)JM-B, Data Book

Page: 238 / 293

235
4. Outdoor Installation
SYSTEM DESIGN
4-3-6. Twinning on the outdoor unit side
Reducer
±
15
°
The tilt angle of the reducer should be
within
±
15
°
with the horizontal plane.
Note: See the following drawing for the fitting
position of the twinning pipe.
The tilt angle of the twinning pipe
The tilt angle of the twinning pipe must be within ±15° with the horizontal plane.
Tilting the twinning pipe more than specified will cause damage to the unit.
The length of the straight part of the pipe before the branching
For the twinning kit, always use the accessory piping parts.
The length of the straight part of pipe connected in front of the
twinning pipe must be 500 mm [19 in.] or longer.
(Connect the field piping so that the length of the straight part
of pipe connected in front of the twinning pipe can be 500 mm
[19 in.] or longer.)
If the length is less than 500 mm [19 in.], it will cause damage
to the unit.
To Indoor unit
Less than 2 m [6 ft.]
To Indoor unit
2m
To Indoor unit
200 mm [7 in.]
or over
Trap
(gas pipe only)
The piping connection
When connecting the twinning kit to the outdoor unit, note the following:
If the length of piping from the twinning kit to the outdoor unit is more than 2 m [6 ft.],
install a trap within 2 m [6 ft.] from the outdoor unit. The height of the trap must be 200
mm [7 in.] or higher.
When installing the twinning kit in a higher position than the outdoor unit base, make
sure that the twinning kit is installed in a position lower than 200 mm [7 in.] from the
outdoor unit base.
<2 m [6 ft.] or less>
<PUHY-RP500YSJM-B>
<PUHY-RP900YSJM-B>
<More than 2 m [6 ft.]>
Outdoor unit 1 Outdoor unit 2
200 mm [7 in.]
or less
Twinning pipe1
To Indoor unit
200 mm [7 in.]
or less
Twinning pipe 1 Twinning pipe 2
To Indoor unit
Outdoor unit 1 Outdoor unit 2 Outdoor unit 3