Daikin RZASG71M2V1B, Installation Manual

4 Installation

Installation manual

11

RZASG71~Y1
Sky Air Advance-series
4P485928-1 – 2017.04

Charging additional refrigerant

Before  charging  additional  refrigerant,  make  sure  the  outdoor  unit's

external

 refrigerant piping is checked (leak test, vacuum drying).

INFORMATION

Depending on the units and/or the installation conditions, it
might be necessary to connect electrical wiring before you
can charge refrigerant.

Typical  workflow  –  Charging  additional  refrigerant  typically  consists
of the following stages:

1 Determining if and how much you have to charge additionally.

2 If necessary, charging additional refrigerant.

3 Filling in the fluorinated greenhouse gases label, and fixing it to

the inside of the outdoor unit.

Completely recharging refrigerant

Before completely recharging refrigerant, make sure the following is
done:

1 All refrigerant is recovered from the system.

2 The outdoor unit's 

external

 refrigerant piping is checked (leak

test, vacuum drying).

3 Vacuum drying on the outdoor unit's 

internal

 refrigerant piping is

performed.

NOTICE

Before  completely  recharging,  perform  vacuum  drying  on
the outdoor unit's 

internal

 refrigerant piping as well.

NOTICE

To  perform  vacuum  drying  or  a  complete  recharge  of  the
outdoor  unit’s  internal  refrigerant  piping  it  is  necessary  to
activate  the  vacuum  mode  (see 

"4.4.7  To  activate/

deactivate  the  vacuum  mode  field  setting"  on  page  12

)

which will open required valves in the refrigerant circuit so
the  vacuuming  process  or  recharge  of  refrigerant  can  be
done properly.

▪ Before  vacuum  drying  or  recharging,  activate  field

setting "vacuum mode".

▪ After finishing vacuum drying or recharging, deactivate

field setting "vacuum mode".

WARNING

Some  sections  of  the  refrigerant  circuit  may  be  isolated
from  other  sections  caused  by  components  with  specific
functions  (e.g.  valves).  The  refrigerant  circuit  therefore
features  additional  service  ports  for  vacuuming,  pressure
relief or pressurizing the circuit.

In case it is required to perform 

brazing

 on the unit, ensure

that there is no pressure remaining inside the unit. Internal
pressures  need  to  be  released  with  ALL  the  service  ports
indicated  on  the  figures  below  opened.  The  location  is
depending on model type.

Location of service ports:

a

b

c

a

Internal service port

b

Stop valve with service port (liquid)

c

Stop valve with service port (gas)

Typical  workflow  –  Completely  recharging  refrigerant  typically
consists of the following stages:

1 Determining how much refrigerant to charge.

2 Charging refrigerant.

3 Filling in the fluorinated greenhouse gases label, and fixing it to

the inside of the outdoor unit.

4.4.2

About the refrigerant

This  product  contains  fluorinated  greenhouse  gases.  Do  NOT  vent
gases into the atmosphere.

Refrigerant type: R32

Global warming potential (GWP) value: 675

WARNING: FLAMMABLE MATERIAL

The refrigerant inside this unit is mildly flammable.

WARNING

The  appliance  shall  be  stored  in  a  room  without
continuously  operating  ignition  sources  (example:  open
flames, an operating gas appliance or an operating electric
heater).

WARNING

▪ Do NOT pierce or burn refrigerant cycle parts.

▪ Do NOT use cleaning materials or means to accelerate

the  defrosting  process  other  than  those  recommended
by the manufacturer.

▪ Be  aware  that  the  refrigerant  inside  the  system  is

odourless.