![Midea MVUR252B-VA3 Скачать руководство пользователя страница 121](http://html1.mh-extra.com/html/midea/mvur252b-va3/mvur252b-va3_service-manual_1791261121.webp)
MIV V5 Heat Recovery DC Inverter R410A
DM14-01.01.18en
119
Installation
Procedure
9. Gas tightness test
Charge 40kgf/cm
2
nitrogen gas from the high-pressure gas valve from the meter connector. Pressure inside
should be maintained no less than 24 hrs.
Note:
Pressurized nitrogen (3.9MPa; 40kgf/cm
2
) is used for airtightness test.
It is not allowed to use oxygen, combustible gas or toxic gas to conduct the airtightness test.
When welding, please use wet cloth insulating the low pressure valve for protection.
To avoid the equipment be damaged, the pressure maintained time should not last too long.
Indoor unit
MS
Nitrogen
Nitrogen
Nitrogen
Liquid pipe
Low-pressure gas pipe
High-pressure gas pipe