Handleiding
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6 Installation
Installer and user reference guide
23
RXYTQ8~16T7YF
VRV IV system air conditioner
4P388989-1A – 2015.07
b
a
a Insulation material
b Caulking etc.
6.7 Charging refrigerant
6.7.1 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 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
Be sure to 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 units are turned on, the compressor will not
operate before the communication is established in a
correct way between outdoor unit(s) and indoor units.
NOTICE
Before starting charging procedures, check if the
7‑segment display indication of the outdoor unit A1P PCB
is as normal (see "7.2.4 To access mode 1 or 2" on
page 31). If a malfunction code is present, see
"10.2 Solving problems based on error codes" on
page40.
NOTICE
Make sure all connected indoor units are recognised (see
[1‑10] in "7.2.7Mode 1: Monitoring settings"on page32).
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.
6.7.2 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 "6.7.5 To charge
refrigerant" on page 25). 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 "6.7.4 To charge refrigerant: Flow
chart"on page24).
6.7.3 To determine the additional refrigerant
amount
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.
Additional refrigerant to be charged=R (kg). R should be rounded off
in units of 0.1 kg.
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
X
1...6
=Total length (m) of liquid piping size at Øa
Piping length Total indoor unit
capacity CR
(a)
A parameter (kg)
8HP 10+12HP 14+16HP
≤30m 50%≤CR≤105% 0 1
105%<CR≤130% 0.5 1.5
>30m 50%≤CR≤70% 0 1
70%<CR≤85% 0.3 0.5 1.5
85%<CR≤105% 0.7 1 2
105%<CR≤130% 1.2 1.5
(a) CR=Connection ratio.
INFORMATION
▪ When using multi combinations, add the sum of
individual HP modules.
▪ Piping length is considered the distance from the
outdoor unit to the farthest indoor unit.
When using metric piping, please take into account following table
concerning the weight factor to be allocated. It should be substituted
in the formula for R.
Inch piping Metric piping
Size (Ø) (mm) Weight factor Size (Ø) (mm) Weight factor
6.4 0.022 6 0.018
9.5 0.059 10 0.065
12.7 0.12 12 0.097
15.9 0.18 15 0.16
Bekijk gratis de handleiding van Daikin RXYTQ28TYF, 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 | RXYTQ28TYF |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 11898 MB |
