Daikin VRV 5 RXYA8A7Y1B Installer And User Manual page 79

RYMA5+RXYA8~20A7Y1B
VRV 5 heat pump
4P749918-1 – 2023.12
Example
VRV system serving three rooms via one SV unit. Room 1 (20 m²) is served by one
indoor unit (32 class) connected to port A. Room 2 (42 m²) is served by two indoor
units (2×50 class) connected to port B (no extension and liquid pipe size up has
been done). Room 3 (150 m²) is served by one indoor unit (200 class) connected to
ports C and D.
Port A is connected to an indoor unit installed in room 1a, that is serving a different
room (room 1b) than where it is installed. The smallest room size needs to be
considered: 20 m². Use the table under Step 2 to find the maximum capacity class
limit of the indoor unit: 140. The selected indoor unit is 32 → OK.
Port B only serves room 2: use the table under Step 2 to find the maximum
capacity class limit of the sum of the indoor units. 42 m² is rounded down to 40 m²:
200. The sum of both indoor units is exactly 100 → OK.
Ports C and D are combined and must be considered as one branch pipe. They only
serve room 3: Use the table under Step 2 to find the maximum capacity class limit
of the indoor unit: 250. The selected indoor unit is 200 → OK.
a
D
200
Room 3
150 m²
A~D Branch pipe port A~D
a Outdoor unit
b SV unit
c Indoor branch kit (refnet)
Room Room
32/50/200 Indoor unit capacity
16 Special requirements for R32 units
|
b
C B
c
c
50 50 32
Room 2 Room 1a
42 m² 20 m²
A
Room 1b
40 m²
Installer and user reference guide
79