17
|
Piping installation
Installer and user reference guide
100
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546228-1C – 2021.11
17.4.4 To charge refrigerant: Flow chart
For more information, see
"17.4.5 To charge refrigerant"
102].
Pre-charging refrigerant
Step 1
Calculate additional refrigerant charge amount: R (kg)
Refrigerant overcharge happened, recover
refrigerant to reach R=Q
Step 2+3
• Open valves C, D and B to the liquid and equalising line
• Charge the equalising line to maximally 0.05 MPa, then close valve C and
disconnect its connection to the manifold. Continue pre-charging through
the liquid line only
• Execute pre-charging amount: Q (kg)
Step 4a
• Close valves D and B
• Charging is finished
• Fill in the amount on the additional
refrigerant charge label
• Input the additional refrigerant amount via
setting [2-14]
• Go to test run
Step 4b
Close valves D and B
R=Q
R>Q
R<Q
Continued on next page >>
p< p>
R410A
N2
C
D
A
B
Summary of Contents for RYYQ8U7Y1B
Page 174: ......
Page 175: ......
Page 176: ...4P546228 1C 2021 11 Copyright 2018 Daikin Verantwortung f r Energie und Umwelt...
