Daikin RXYLQ24T7Y1B handleiding
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14 Piping installation
Installation and operation manual
22
RXMLQ8 + RXYLQ10~14T7Y1B*
VRV IV system air conditioner
4P543426-1C – 2025.01
14.4 Charging refrigerant
14.4.1 Precautions when charging refrigerant
WARNING
▪ ONLY use R410A as refrigerant. Other substances
may cause explosions and accidents.
▪ R410A contains fluorinated greenhouse gases. Its
global warming potential (GWP) value is 2087.5. Do
NOT vent these gases into the atmosphere.
▪ When charging refrigerant, ALWAYS use protective
gloves and safety glasses.
NOTICE
If the power of some units is turned off, the charging
procedure cannot be finished properly.
NOTICE
In case of a multiple outdoor system, turn on the power of
all outdoor units.
NOTICE
Turn ON the power 6 hours before operation in order to
have power running to the crankcase heater and to protect
the compressor.
NOTICE
If operation is performed within 12 minutes after the indoor
and outdoor unit(s) are powered on, the compressor will
not operate before the communication is established in a
correct way between outdoor unit(s) and indoor unit(s).
NOTICE
Before starting charging procedures, check if the
7‑segment display indication of the outdoor unit A1P PCB
is as normal (see "16.1.4 To access mode 1 or 2"[429]).
If a malfunction code is present, see "19.1 Solving
problems based on error codes"[433].
NOTICE
Close the front panel before any refrigerant charge
operation is executed. Without the front panel attached the
unit cannot judge correctly whether it is operating properly
or not.
NOTICE
In case of maintenance and the system (outdoor unit+field
piping+indoor units) does not contain any refrigerant any
more (e.g., after refrigerant reclaim operation), the unit has
to be charged with its original amount of refrigerant (refer
to the nameplate on the unit) by pre-charging before the
automatic charging function can be started.
14.4.2 About charging refrigerant
Once vacuum drying is finished, additional refrigerant charging can
start.
To speed up the refrigerant charging process, it is in case of larger
systems recommended to first pre-charge a portion of refrigerant
through the liquid line before proceeding with the manual charging.
This step is included in below procedure (see "14.4.5 To charge
refrigerant" [4 24]). It can be skipped, but charging will take longer
then.
A flow chart is available which gives an overview of the possibilities
and actions to be taken (see "14.4.4 To charge refrigerant: Flow
chart"[422]).
14.4.3 To determine the additional refrigerant
amount
INFORMATION
For final charge adjustment in the test laboratory, please
contact your local dealer.
NOTICE
The refrigerant charge of the system must be less than
100 kg. This means that in case the calculated total
refrigerant charge is equal to or more than 95kg you must
divide your multiple outdoor system into smaller
independent systems, each containing less than 95 kg
refrigerant charge. For factory charge, refer to the unit
name plate.
Formula:
R=[(X
1
×Ø22.2)×0.37+(X
2
×Ø19.1)×0.26+(X
3
×Ø15.9)×0.18+
(X
4
×Ø12.7)×0.12+(X
5
×Ø9.5)×0.059+(X
6
×Ø6.4)×0.022]+A+B
R Additional refrigerant to be charged [in kg and rounded
off to 1 decimal place]
X
1...6
Total length [m] of liquid piping size at Øa
A, B Parameters A and B (see tables below)
▪ Parameter A:
Piping length
(a)
CR
(b)
A
(c)
8 HP 10~14 HP
≤30m 105%<CR≤130% 0.5kg
>30m 105%<CR≤130% 1.2kg 1.5kg
(a)
Piping length is considered the distance from the outdoor unit to
the farthest indoor unit.
(b)
Total CR = Total indoor unit capacity connection ratio
(c)
In case of a multi-outdoor-unit system, add the sum of the
individual outdoor unit charge factors.
▪ Parameter B:
Parameter B
(a)
8 HP, 10 HP, 12 HP 14 HP
2.0kg 3.8kg
(a)
In case of a multi-outdoor-unit system, add the sum of the
individual outdoor unit charge factors.
Metric piping. When using metric piping, replace the weight factors
in the formula by the ones from the following table:
Inch piping Metric piping
Piping Weight factor Piping Weight factor
Ø6.4mm 0.022 Ø6mm 0.018
Ø9.5mm 0.059 Ø10mm 0.065
Ø12.7mm 0.12 Ø12mm 0.097
Ø15.9mm 0.18 Ø15mm 0.16
Ø16mm 0.18
Ø19.1mm 0.26 Ø18mm 0.24
Ø22.2mm 0.37 Ø22mm 0.35
14.4.4 To charge refrigerant: Flow chart
For more information, see "14.4.5To charge refrigerant"[424].
Bekijk gratis de handleiding van Daikin RXYLQ24T7Y1B, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Daikin |
| Model | RXYLQ24T7Y1B |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 6679 MB |
