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Piping installation
Installer reference guide
79
ERGA04~08EAV3(A) + 08S18+9W
Daikin Altherma 3 R F
4P629093-1 – 2020.08
8.4.3 To check for leaks
NOTICE
Do NOT exceed the unit's maximum working pressure (see "PS High" on the unit
name plate).
NOTICE
ALWAYS use a recommended bubble test solution from your wholesaler.
NEVER use soap water:
▪
Soap water may cause cracking of components, such as flare nuts or stop valve
caps.
▪
Soap water may contain salt, which absorbs moisture that will freeze when the
piping gets cold.
▪
Soap water contains ammonia which may lead to corrosion of flared joints
(between the brass flare nut and the copper flare).
1
Charge the system with nitrogen gas up to a gauge pressure of at least
200 kPa (2 bar). It is recommended to pressurize to 3000 kPa (30 bar) in order
to detect small leaks.
2
Check for leaks by applying the bubble test solution to all connections.
3
Discharge all nitrogen gas.
8.4.4 To perform vacuum drying
Connect the vacuum pump and manifold as follows:
a
d
j
b
f
e
c
g h i
h
a
Pressure meter
b
Gauge manifold
c
Low pressure valve (Lo)
d
High-pressure valve (Hi)
e
Charging hoses
f
Vacuum pump
g
Service port
h
Valve lids
i
Gas stop valve
j
Liquid stop valve
1
Vacuum the system until the pressure on the manifold indicates −0.1 MPa
(−1 bar).
2
Leave as is for 4-5 minutes and check the pressure:
If the pressure…
Then…
Does not change
There is no moisture in the system.
This procedure is finished.
Increases
There is moisture in the system. Go
to the next step.
Содержание Altherma 3 R F EHVZ04S18E 6V Series
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