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Special requirements for R32 units
Installer and user reference guide
71
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
Procedure to check if
smallest area of lowest
underground floor meets the
requirements
Start installation
Derive maximum system charge.
See step 3 in above text.
Determine smallest room area
of the lowest underground floor.
Change installation for this port:
1. Increase area of smallest underground
room.
OR
2. Decrease piping length by changing layout
OR
3. Add additional countermeasures
as described in applicable legislation.
Total charge amount
<
Total charge limit?
A
min
[m²]
Total charge limit
[kg]
Derive total charge amount.
See step 4 in above text.
Total charge amount
[kg]
YES
NO
Continued from previous column/page
