![background image](http://html.mh-extra.com/html/daikin/4mwxm-a/4mwxm-a_installers-reference-manual_501129046.webp)
8
|
Charging refrigerant
Installer reference guide
46
4MWXM-A
R32 Split series
4P678385-1A – 2022.02
8.3 Precautions when charging refrigerant
INFORMATION
Also read the precautions and requirements in the following chapters:
▪
"2 General safety precautions"
▪
"7.1 Preparing refrigerant piping"
8.4 To determine the additional refrigerant amount
If the total liquid piping
length is…
Then…
≤30 m
Do NOT add additional refrigerant.
>30 m
R=(total length (m) of liquid piping–30 m)×0.020
R=Additional charge (kg) (rounded in units of 0.1 kg)
INFORMATION
Piping length is the one-way length of liquid piping.
▪
Maximum allowable refrigerant charge amount:
2.6 kg
8.5 To determine the complete recharge amount
INFORMATION
If a complete recharge is necessary, the total refrigerant charge is: the factory
refrigerant charge (see unit name plate) + the determined additional amount.
8.6 To charge additional refrigerant
WARNING
▪
Only use R32 as refrigerant. Other substances may cause explosions and
accidents.
▪
R32 contains fluorinated greenhouse gases. Its global warming potential (GWP)
value is 675. Do NOT vent these gases into the atmosphere.
▪
When charging refrigerant, ALWAYS use protective gloves and safety glasses.
NOTICE
To avoid compressor breakdown, do NOT charge more than the specified amount of
refrigerant.
Prerequisite:
Before charging refrigerant, make sure the refrigerant piping is
connected and checked (leak test and vacuum drying).
1
Connect the refrigerant cylinder to the service port.
2
Charge the additional refrigerant amount.
Summary of Contents for 4MWXM-A
Page 1: ...Installer reference guide R32 Split series 4MWXM52A2V1B ...
Page 32: ...6 Unit installation Installer reference guide 32 4MWXM A R32 Split series 4P678385 1A 2022 02 ...
Page 77: ......
Page 78: ......
Page 79: ......
Page 80: ...4P678385 1A 2022 02 Copyright 2021 Daikin Verantwortung für Energie und Umwelt ...