To Recover Refrigerant - Daikin RDXYQ5T8V1B Installer And User Manual

21.4.2 To recover refrigerant

RKXYQ5T8+8T7Y1B + RDXYQ5T8+8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12
Model
8 HP
2 Evacuate the system with a vacuum pump.
3 Press BS1 (in case of 5 HP) or BS3 (in case of 8 HP) to stop vacuuming mode.
This should be done with a refrigerant recovery unit. Follow the same procedure as
for vacuuming method.
DANGER: RISK OF EXPLOSION
Pump down – Refrigerant leakage. If you want to pump down the system, and there
is a leak in the refrigerant circuit:
▪
Do NOT use the unit's automatic pump down function, with which you can collect
all refrigerant from the system into the outdoor unit. Possible consequence: Self-
combustion and explosion of the compressor because of air going into the
operating compressor.
▪
Use a separate recovery system so that the unit's compressor does NOT have to
operate.
NOTICE
Make sure to NOT recover any oil while recovering refrigerant. Example: By using an
oil separator.
21
When confirmed, the expansion valves (in the indoor
unit, compressor unit and heat exchanger unit) will fully
open. At that moment the 7‑segment display indication=
and the user interface of all indoor units indicate
TEST (test operation) and
operation will be prohibited.
Maintenance and service
|
Result
(external control) and the
Installer and user reference guide
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