Mitsubishi Electric PFD-P250 Installation Manual page 12

- Mixing of a different refrigerant, air, etc. may cause the refrigerant cycle to mal-
function and result in severe damage.
- The large amount of chlorine in conventional refrigerant and refrigerator oil
in the existing piping will cause the new refrigerant to deteriorate.
- If dust, dirt, or water gets into the refrigerant cycle, the oil will deteriorate
and the compressor may fail.
A Piping on site
B Piping on site
A Pipe cover
C
<Preparation of the pipes in a 2-refrigerant-circuit>
outside the unit.
ing may be bitten by mouses. Use as many metal pipes as possible to insert
the cables into them for protection.
7. Be sure to connect control cables to the indoor unit, remote controller, and
the outdoor unit.
8. Put the unit to the ground on the outdoor unit side.
12
B Pipe mounting plate
D
A Drain pan
C As seen from front of unit
E Emergency drain piping on site
G
vent it from waving. Never provide any air vent pipe. Otherwise drain may be
3. Do not provide any odor trap at the drain discharge port.
generated.
drains properly.
8. Provide a drain trap to the drain piping installed on site.
* The loop on the drain hose provided with the unit does not function as a
trap; it is only used to drain water to the main drain pan at the bottom of
the product.
CVVS, CPEVS or MVVS <max length: 200 m>.
2
Types of cables
-
Cable diameter
Length Less than 200 m
-
Model
-
Power supply
Power supply wiring cross-section
Earth wiring cross-section
Type <capacity>
Rated sensitivity
B Drain hose
D Main drain piping on site
F
MA remote controller
2
2 2
2 2
20 A 30 A
30 mA less than 0.1 s
20 A 30 A
-
-