Daikin REMA5A7Y1B9 handleiding
Handleiding
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13 Special requirements for R32 units
Installation and operation manual
20
REMA5A7Y1B9+REYA8~20A7Y1B9
VRV 5 heat recovery
4P797563-1 – 2024.11
13.3.1 Overview: flowchart
Procedure to check required
countermeasure for indoor unit
Determine the smallest area out of:
- the room where an indoor unit is installed,
- each of the rooms served by a ducted indoor
unit installed in a different room
Determine total amount of
refrigerant in the system.
See Step
1 in above text
See Step
2 in above text
See Step
3 in
above text
See Step
3 in
above text
Determine required safety
measure based on ‘Lowest
underground floor’ of the graph
and table.
Determine required safety
measure based on ‘All other
floors’ of the graph and table.
A
min
[m²]
YESNO
Indoor unit installed/
conditioning on
lowest underground floor?
No safety measure
+ [BS unit (*1)]
No safety measure
+ [BS unit (*1)]
Natural ventilation
+ [BS unit (*2)]
NOT allowed
Total charge amount [kg]
Alarm +
Natural ventilation
+ [BS unit (*2)]
+
Alarm +
shut-off valve [BS unit]
+
Alarm +
shut-off valve [BS unit]
+
OR OR
*1 BS unit functions only as branch selector. *2 Use the rules for natural ventilation instead of shut-off
valve.
Note: The flowchart is an overview. Always refer to the full text mentioned in this manual for clear understanding and detailed explanation.
13.4 Safety measures
13.4.1 Shut-off valves
The system is standard equipped with shut-off valves in the BS unit.
The shut-off valves needs to be closed to reduce the amount of
refrigerant leakage in to the room where the indoor unit is installed.
For the settings related to the shut-off valves, refer to the installation
and operation manual delivered with the BS unit.
The maximum amount of charge limit and so the maximum capacity
class of indoor unit which is allowed to install in the room is
determined as below.
About the charge limit
The charge limit must be determined separately for each BS unit
branch pipe port.
This is possible because of the shut-off valves in the BS unit. The
maximum amount of refrigerant that can escape in case of a leak is
determined by the piping length and indoor heat exchanger size.
This is directly linked to the downstream indoor unit capacity of this
piping section.
In case a leak is detected in an indoor unit, the shut-off valves in the
BS unit of the respective port will close. The piping section with the
leak is now shut off from the rest of the system and the amount of
refrigerant that can leak is significantly reduced.
Note: When two branch pipe ports are combined in order to form a
single branch pipe port (e.g. FXMA200/250), they must be
considered as a single branch pipe port.
To determine the charge limit
Step1 – Determine the smallest area out of:
▪ Each of the rooms served by BS unit branch pipe port where an
indoor unit is installed
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Productinformatie
| Merk | Daikin |
| Model | REMA5A7Y1B9 |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 10896 MB |
