Installation Instruction; Indoor Floor Area Requirement - Panasonic WH-UD05JE5 Service Manual

12. Installation Instruction

12.1 Indoor Floor Area Requirement


If the total refrigerant charge in the system is <1.84 kg, no additional minimum floor area is required.

If the total refrigerant charge in the system is ≥1.84 kg, additional minimum floor area requirements is
complied as described below:
Symbol Description
m Total refrigerant charge in system
c
Maximum refrigerant charge allowed
m
max
m m - m
c max
excess
H Installation height
VA Minimum ventilation opening area
min
A) Determine Maximum refrigerant charge allowed, m
1. Calculate Installation Room Area, A
2. Based on Table I, select m
3. If m ≥ m , the unit can be installed in the installation room with the specified installation height (H=600mm)
max c
in Table I and without additional room area or any additional ventilation.
4. Else, proceed to B) and C).
B) Determine Total Floor Area of A
1. Calculate the B
2. Determine the A
3. The total floor area of both A
C) Determine Minimum Venting Opening Area, VA
1. From Table III, calculate m
2. Then determine VA
3. The unit can be installed at specific room only when the following conditions are fulfilled:

Two permanent openings, one at bottom, another at top, for ventilation purposes are made between
A and B
room

Bottom opening: - Must comply to the minimum area requirement of VA

Top opening:

The height of the openings must more than 20mm.

A direct ventilation opening to outside is NOT encouraged for ventilation opening (the user can block the
opening when it is cold).

The value of H is considered as 0.6m to comply to IEC 60335-2-40:2018 Clause GG2.
room
which corresponds to the calculated A
max
and B
room
area adjacent to the A
room
based on the Total Refrigerant Charge, m
min total
and B
room room
.
excess
corresponding to the calculated m
min
.
room
- Opening must be located 300mm from the floor.
- At least 50% of required opening area must be
200mm from the floor.
- The bottom of the opening shall not be higher
than the point of release when the unit is installed
and must be situated 100mm above the floor.
- Must be as close as possible to the floor and
lower than H.
- The total size of the Top opening must be more
than 50% of VA
- Opening must be located 1500mm above the
floor.
Unit
kg
Total refrigerant charge in system, m
kg
= Pre-charged refrigerant amount in unit (kg)
kg
+ Additional refrigerant amount after installation (kg)
m
cm 2
max
.
compliance to A
room min total
.
room
must exceed A
min total
for natural ventilation
min
for natural ventilation between A
excess
.
min
66
value.
room
from Table II.
c
.
.
min
Installation
Room
(A )
room
(kg)
c
and B .
room room
Adjacent
Room
(B )
room
>0.5 VA
min
>VA
min