Daikin ATXC50B/ARXC50B 104365 - Инструкция по эксплуатации - Страница 23

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English

SPECIAL PRECAUTIONS WHEN DEALING WITH R32 UNIT

Model

R32 charge, kg

for 7.5m piping

Minimum 

fl

oor area,

Xm

2

 (based on 7.5m

piping)

R32 charge, kg for 

max allowable 

pipe length*

Minimum 

fl

oor area, Xm

2

(based on max allowable

pipe length*)

ATXC20B - ARXC20B

0.55

0.29

0.76

0.55

ATXC25B - ARXC25B

0.55

0.29

0.76

0.55

ATXC35B - ARXC35B

0.75

0.54

0.96

0.88

ATXC50B - ARXC50B

1.00

0.95

1.38

1.82

ATXC60B - ARXC60B

1.10

1.15

1.48

2.10

ATXC71B - ARXC71B

1.15

1.26

1.53

2.24

* Calculation based on Installation Height of 1.8m
*  Max. Allowable Length (L),m for:-

ATXC20/25/35B-ARXC20/25/35B:20
ATXC50/60/71B-ARXC50/60/71B:30

•  Installation of pipe work shall be kept to a minimum and pipe work shall be protected from physical damage and shall 

not be installed in an unventilated space.

•  Reusable mechanical connectors and 

fl

are joints shall be accessible for maintenance purposes.

WARNING

Prior to installation, ensure risk of ignition is minimised and avoid working in con

fi

ned space. 

Ensure adequate ventilation is available by opening windows or doors.

●

When 

fl

ared joints are reused indoors, the 

fl

are part shall be re-fabricated.

●

A void installation of the air conditioner in a place where there is danger of exposure to continuously 
operating open 

fl

ames (for example an operating electric heaters).

●

Any person who is involved with working on or breaking into a refrigerant circuit should hold a current 
valid certi

fi

cate from an industry-accredited assessment authority, which authorises their competence to 

handle refrigerants safely in accordance with an industry recognised assessment speci

fi

cation.

●

Checking for presence of refrigerant

The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure 
the technician is aware of potentially 

fl

ammable atmospheres. Ensure that the leak detection equipment 

being used is suitable for use with 

fl

ammable refrigerants, i.e. nonsparking, adequately sealed or 

intrinsically safe.

●

Presence of 

fi

re extinguisher

If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate 

fi

re 

extinguishing equipment shall be available to hand. Have a dry powder or CO

2

fi

re extinguisher adjacent 

to the charging area.

●

No ignition sources

All possible ignition sources, including cigarette smoking, should be kept suf

fi

ciently far away from the 

site of installation, repairing, removing and disposal, during which 

fl

ammable refrigerant can possibly be 

released to the surrounding space. “No Smoking” signs shall be displayed.

●

The following checks shall be applied to installations:

– marking to the equipment continues to be visible and legible. Markings and signs that are illegible 

shall be corrected;

– refrigeration pipe or components are installed in a position where they are unlikely to be exposed to 

any substance which may corrode refrigerant containing components, unless the components are 
constructed of materials which are inherently resistant to being corroded or are suitably protected 
against being so corroded.

●

Initial safety checks shall include:

– that capacitors are discharged, this shall be done in a safe manner to avoid possibility of sparking

– there shall be no live electrical components and wiring are exposed while charging, recovering or 

purging the system;