Daikin UATYA-BBAY1 Manual De Instalación, Uso Y Mantenimiento página 15

The unit is equipped with a refrigerant detection system that complies with Annex LL of the IEC 60335-2-40:2018,
which position has been checked according to test reported in Annex MM of IEC 60335-2-40:2018.
When the refrigerant detection system detects a leak, the following will be initiated by the unit:
• disable the compressor operation unless the compressors;
• Supply and return (if present) fan control will be set to to constant airflow logic with a fix airflow value. The fans
will operate continuously even if time tables are set. This in order to not let the airflow to go below "Q
below);
• Energize a dedicated relay in the electrical cabinet in order to fully open any external zoning dampers;
• Set the dampers (if installed on the appliance) in order to have a full intake of fresh air and a full expulsion of the
return air.
External zoning dampers, if present, must be connected to this relay in order to be open when a leak
is detected
Zoning dampers installed in rooms considered to determine the minimum room area must be
electrically powered at all times after installation, other than when servicing, to be effective for safety.
The refrigerant detection system and controls will maintain the above action until at least 5 min after the refrigerant
detection system has reset. Building fire and smoke systems may override this function.
If the leak detector detects a leak, the above operations will be initiated even if the unit is turned OFF
by button, by BMS or by digital input.
In addition to what above another dedicated relay is present in the unit electrical cabinet and
connected directly to the leak detector alarm. This relay can be used to monitor the leak detector
alarm even in case of a unit control board fault.
The minimum circulation airflow (Q
accordance with the following table:
For units without hot gas post heating coil
Unit
UATYA25 6,0
UATYA30
11,5
UATYA40
12,4
UATYA50
15,0
UATYA60 18,0
UATYA70 18,0
UATYA80 23,0
UATYA90 24,0
UATYA100 28,0
UATYA110 30,0
UATYA120 34,0
UATYA140 19,0
UATYA150 19,0
UATYA160 23,0
UATYA180
23,5
UATYA190
25,0
Whenever the flow, measured by the differantial air presssure tranducer, falls below the values
reported in the table above, the airflow alarm from differential pressure transducer will be displayed on
the unit control and the unit will be stopped.
The supply and return air shall be directly ducted to the conditioned space. Open areas such as false ceilings shall
not be used as a return air duct.
We reserve the right to make changes without any prior notice.
UATYA
4P645202-2
) circulated to the total conditioned space, expressed in m
min
m
c
[kg] m
- 1.173
- 2.248
- 2.423
- 2.932
- 3.518
- 3.518
- 4.495
- 4.691
- 5.472
- 5.863
- 6.645
19,0 3.713
19,0 3.713
23,0 4.495
23,5 4.593
25,0 4.886
For units with hot gas post heating coil
Q
min
/h
3
7,3
12,8
13,7
17,0
21,0
21,0
26,9
28,0
32,3
34,7
39,2
20,6
20,6
24,6
26,2
27,7
⁄h, must be in
3
m
c
[kg] m
- 1.427
- 2.502
- 2.680
- 3.326
- 4.095
- 4.095
- 5.255
- 5.479
- 6.315
- 6.783
- 7.661
20,6 4.026
20,6 4.026
24,6 4.808
26,2 5.121
27,7 5.414
Translation from original instructions
Packaged Rooftop
" (see
min
Q
min
/h
3
15