Daikin ERA250AMYFB handleiding
Handleiding
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16 Charging refrigerant
Installation and operation manual
31
ERA200~300AMYFB
Inverter outdoor unit for AHU option kit and air curtains
4P780153-1 – 2024.07
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) and the determined additional
refrigerant amount.
NOTICE
▪ Ensure that contamination of different refrigerants does
not occur when using charging equipment.
▪ Charging hoses or lines shall be as short as possible to
minimise the amount of refrigerant contained in them.
▪ Cylinders shall be kept in an appropriate position
according to the instructions.
▪ Ensure that the refrigerating system is earthed prior to
charging the system with refrigerant. See "17.4 To
connect the electrical wiring to the outdoor unit"[434].
▪ Label the system when charging is complete.
▪ Extreme care shall be taken not to overfill the
refrigerating system.
NOTICE
Prior to charging the system, it shall be pressure tested
with the appropriate purging gas. The system shall be leak
tested on completion of charging but prior to
commissioning. A follow up leak test shall be carried out
prior to leaving the site.
16.2 To determine the additional
refrigerant amount
WARNING
In case the system serves the lowest underground floor of
a building, there is an extra limit to the maximum allowable
total refrigerant amount. This maximum refrigerant amount
is determined based on the area of the smallest room on
the lowest underground floor.
See "13 Special requirements for R32 units" [4 17] to
determine the maximum allowable total refrigerant amount.
INFORMATION
For final charge adjustment in the test laboratory, please
contact your local dealer.
INFORMATION
Note down the amount of additional refrigerant that is
calculated here, for later use on the additional refrigerant
charge label. See "16.5 To fix the fluorinated greenhouse
gases label"[432].
NOTICE
The refrigerant charge of the system must be less than
79.8kg. For factory charge, refer to the unit name plate.
Formula:
R = [(X
1
× Ø12.7) × 0.10 + (X
2
× Ø9.5) × 0.053]
R Additional refrigerant to be charged [kg] (rounded off to
one decimal place)
X
1...2
Total length [m] of liquid piping size at Øa
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
Ø9.5mm 0.053 Ø10mm 0.058
Ø12.7mm 0.10 Ø12mm 0.088
16.3 To charge refrigerant
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. It
can be skipped, but charging will take longer then.
Pre-charging refrigerant
Pre-charging can be done without compressor operation, by
connecting the refrigerant bottle to the service port of the liquid stop
valve.
1 Connect as shown. Make sure that all outdoor unit stop valves,
as well as valve A are closed.
p
<
p
>
C
b c e
a
g
f
d
A B
R32
N
2
a Pressure reducing valve
b Nitrogen
c Weighing scales
d Refrigerant R32 tank (siphon system)
e Vacuum pump
f Liquid line stop valve
g Gas line stop valve
A Valve A
B Valve B
C Valve C
2 Open valves C and B.
3 Pre‑charge refrigerant until the determined additional refrigerant
amount is reached or pre‑charging is not possible anymore, and
then close valves C and B.
4 Do one of the following:
If Then
The determined additional
refrigerant amount is reached
Disconnect the manifold from
the liquid line.
You do not have to perform the
"Charging refrigerant (in
manual additional refrigerant
charge mode)" instructions.
Too much refrigerant is
charged
Recover refrigerant.
Disconnect the manifold from
the liquid line.
You do not have to perform the
"Charging refrigerant (in
manual additional refrigerant
charge mode)" instructions.
The determined additional
refrigerant amount is not
reached yet
Disconnect the manifold from
the liquid line.
Continue with the "Charging
refrigerant (in manual
additional refrigerant charge
mode)" instructions.
Bekijk gratis de handleiding van Daikin ERA250AMYFB, 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 | ERA250AMYFB |
| Categorie | Ventilator |
| Taal | Nederlands |
| Grootte | 8144 MB |
