Mitsubishi Electric PFAV-P250VM-E Data Book page 66

f ) Twinning on the outdoor unit side
• The tilt angle of the twinning pipe
The tilt angle of the twinning pipe must be within ±15 ° with the ground.
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 inch)
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 inch) or longer.)
If the length is less than 500 mm (19 inch), it will
cause damage to the unit.
• 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 inch) or higher.
<2 m (6 ft) or less>
To Indoor unit
2m
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 inch) from the outdoor unit base.
<PUHY-P500YSHM-A>
<More than 2 m (6 ft)>
200 mm (7 inch)
or over
Less than 2 m (6 ft)
Outdoor unit 1
200 mm (7 inch)
or less
64
Note: See the following drawing for the fitting
position of the twinning pipe.
The tilt angle of the reducer should be
±
within
Trap
(gas pipe only)
To Indoor unit
Outdoor unit 2
Twinning pipe1
To Indoor unit
Reducer
°
15 with the ground.