Panasonic WH-SDC0305J3E5 Installationshandbuch Seite 3

PRECAUTION FOR USING R32 REFRIGERANT
•
The basic installation work procedures are the same as conventional refrigerant (R410A, R22) models.
However, pay careful attention to the following points:
When connecting fl are at indoor side, make sure that the fl are connection is used only once, if torqued up and released, the fl are must be remade. Once
the fl are connection was torqued up correctly and leak test was made, thoroughly clean and dry the surface to remove oil, dirt and grease by following
instructions of silicone sealant. Apply neutral cure (Alkoxy type) & ammonia-free silicone sealant that is non-corrosive to copper & brass to the external of the
fl ared connection to prevent the ingress of moisture on both the gas & liquid sides. (Moisture may cause freezing and premature failure of the connection)
The appliance shall be stored, installed and operated in a well ventilated room with comply to Indoor Floor Area Requirement and without any
continuously operating ignition source. Keep away from open fl ames, any operating gas appliances or any operating electric heater. Else, it may explode
and cause injury or death.
Refer to "PRECAUTION FOR USING R32 REFRIGERANT" in outdoor unit installation manual for other precautions that need to pay attention to.
INDOOR FLOOR AREA REQUIREMENT
If the total refrigerant charge in the system is <1.84 kg, no additional minimum fl oor area is required.
•
• If the total refrigerant charge in the system is ≥1.84 kg, additional minimum fl oor area requirements is complied as described below:
Symbol Description
m
Total refrigerant charge in system
c
m Maximum refrigerant charge allowed
max
m
m - m
excess c max
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
max
3. If m > m , the unit can be installed in the installation room with
max c
the specifi ed installation height 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 area adjacent to the A
room
2. Determine the A based on the Total Refrigerant Charge, m
min total
3. The total fl oor area of both A
room
C) Determine Minimum Venting Opening Area, VA
1. From Table III, calculate m
2. Then determine VA corresponding to the calculated m
min
for natural ventilation between A
3. The unit can be installed at specifi c room only when the following conditions are fulfi lled:
•
Two permanent openings, one at bottom, another at top, for ventilation purposes are made between
A and B .
room room
• Bottom opening: - Must comply to the minimum area requirement of VA
- Opening must be located 300mm from the fl oor.
- At least 50% of required opening area must be
200mm from the fl oor.
- 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 fl oor.
- Must be as close as possible to the fl oor and lower
than H .
• Top opening:
- The total size of the Top opening must be more
than 50% of VA
- Opening must be located 1500mm above the fl oor.
•
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).
Unit
kg
kg
kg
m
cm
max
.
room
which corresponds to the calculated A
and B compliance to A
room room
.
room
and B must exceed A .
room min total
for natural ventilation
min
.
excess
excess
and B .
room room
.
min
Total refrigerant charge in system, m
= Pre-charged refrigerant amount in unit (kg)
+ Additional refrigerant amount after installation (kg)
2
value.
room
min total
from Table II.
c
.
min
Installation
Room
( A )
room
(kg)
c
Adjacent
Room
( B )
room
>0.5 VA
> VA
min
min
3