Check Of Density Limit - Panasonic S-15MK2E5B Installation Instructions Manual

Check of Density Limit

Check the amount of refrigerant in the system and floor space of the room according to the
legislation on refrigerant drainage. If there is no applicable legislation, follow the standards
described below.
The refrigerant (R32), which is used in the air conditioner, is a flammable refrigerant. So the
requirements for the maximum refrigerant charge amount [m
determined according to installation space of the appliance.
Installation conditions
Procedure of preliminary calculation
1. Determine the room space in accordance with the requirements of installation.
2. Calculate the maximum refrigerant charge amount [m
When connecting the refrigerant tubes and installing the
indoor unit in each partitioned room, it is necessary to
calculate the allowable refrigerant charge amount in each
room.
For all indoor units shown in Fig. 1, calculate the
allowable refrigerant charge amount that can be used in
each room [m
IN_1
Calculate the maximum refrigerant charge for each indoor
unit from Fig. 2 by referring to the following items.
- Floor area of the room
- Indoor units type
- Capacity of indoor unit
- Installation height of Indoor Unit
- Use or nonuse of R32 refrigerant leakage detection sensor
No. of
Room No. indoor
units
Room_1 IN_1
Room_2 IN_2
Room_3 IN_3
--- ---
Room_m IN_n-1
Room_m IN_n
The minimum value of the allowable refrigerant charge amount in each room is the maximum
value of the maximum refrigerant charge amount [m
3. Calculate the maximum refrigerant charge amount [m
installation.
As a reference, refer to Installation Instructions of outdoor unit.
4. Determine from two values [m
] ≤ [m
[m ] : Can be installed.
c max
[m ] > [m ] : Return to Steps 1 to 3 and change the indoor unit type, capacity and pipe
c max
length.
, m ,---, m ].
IN_2 IN_n
Indoor units type
4-Way Cassette 60 × 60
Slim Low Static Ducted
4-Way Cassette
---
Wall-Mounted
4-Way Cassette
] in Step 2 and [m
max
max
Installation
Capacity
height of
of indoor
Indoor Unit:
unit
h (m)
inst
≥ 2.2
15 h
inst
56 h ≥ 2.2
inst
≥ 2.2
56 h
inst
--- ---
≥ 1.8
45 h
inst
≥ 2.2
140 h
inst
[m ] = Min (m
max
] that can be used in the system.
max
] by following details of piping
c
] in Step 3.
c
10
] used in the appliance are
max
].
IN_1
IN_2
Room_1 Room_2
R32 refrigerant Floor area
leakage detection of the
sensor room (m
Use 10
Nonuse 15
Use 20
--- ---
Nonuse 30
Use 30
, m , m
IN_1 IN_2 IN_3
IN_3 IN_n
IN_n-1
Room_3 Room_m
Fig. 1
Refrigerant charge
amount that can
be used for each
2
)
indoor unit (kg)
m
IN_1
m
IN_2
m
IN_3
---
m
IN_n-1
m
IN_n
, ---, m , m )
IN_n-1 IN_n