Precautions For Installation Work - Panasonic 2WAY-Multi U-10MES2E8 Bedienungsanleitung

Always check the gas
WARNING density limit for the
room in which the
unit is installed.
(7) Check of Limit Density
When installing an air conditioner in a room, it is
necessary to ensure that even if the refrigerant
gas accidentally leaks out, its density does not
exceed the limit level for that room.
If the density could exceed the limit level, it
is necessary to provide an opening between
the unit and the adjacent room, or to install
mechanical ventilation which is interlocked with
a leak detector.
(Total refrigerant charged amount: kg)
(Min. indoor volume where the indoor unit is
installed: m³)
≤ Limit density 0.44 (kg/m³)
The limit density of refrigerant R410A which is
used in this unit is 0.44 kg/m³ (ISO 5149).
The shipped outdoor unit comes charged with
the amount of refrigerant fixed for each type,
so add it to the amount that is charged in the field.
(For the refrigerant charge amount at shipment,
refer to the unit's nameplate.)
Minimum indoor volume & floor area as against
the amount of refrigerant is roughly as given in the
following table.
Pay special attention to any location, such as a basement, etc., where leaking
CAUTION
refrigerant can accumulate, since refrigerant gas is heavier than air.

2. PRECAUTIONS FOR INSTALLATION WORK

(1) Foundation construction of the GHP outdoor unit
WARNING
• The foundation for the outdoor unit must be made of concrete or similar material, and must be
sturdy and level, with good drainage.
Imperfections may cause the outdoor unit to turn over, resulting in gas leakage and/or injury.
• Use a level to make sure the foundation is level.
If level is not maintained, it may result in a breakdown.
• When installing the outdoor unit, be sure to use the specified size of anchor bolts (shown in Fig. 7)
and anchor the unit security. Failure to do so may result in the outdoor unit tipping over, causing
gas leakage and personal injury.
 Spread a vibration-resistant mat over the surface where the bottom of the outdoor unit contacts the
ground, so that the load is applied evenly. Use rubber bushings and anchors in such a way does not
diminish the vibration-resistant effects.
2 3
m m
85 229.5
80 216.0
75 202.5
70 189.0
Range below the
65 175.5
density limit of
60 162.0
0.44 kg/m³
(Countermeasures
55 148.5
not needed)
50 135.0
45 121.5
40 108.0
35 94.5
30 81.0
25 67.5
20 54.0
15 40.5
10 27.0
5 13.5
0 0.0
0 10 20 30
Total amount of refrigerant
EN - 10
Range above the
density limit of
0.44 kg/m³
(Countermeasures
needed)
40 50 60 70 80 90 100
Fig. 6
kg