Daikin RXTA30B2V1B, Service Manual

Page: 220 / 264

5 | Third party components
Service manual
220
RXTM-R+RXTP-R+ARXTP-R+RXTA-B+FTXTA30B2V1B(W)
(B)+35M5V1B
R32 Optimized Heating 4 Split
ESIE21-12A – 2022.02
▪ Pipe expansion / flare making:
- Remove any burrs on the cut surface using the correct tool such as reamer or
scraper (note that excessive deburring can thin the pipe walls and cause
cracking of the pipe).
- Make sure the flare has the correct size (use a flare gauge).
- Make sure no particles remain in the piping.
- Apply just a drop of refrigerant oil on the inner surface of the flare.
- Make sure the flare connection is tightened with the correct torque (torque
values refer to installation manual).
▪ Brazing:
- Use the correct brazing tool.
- Use a phosphor copper filler metal (silver composition of 0 to 2%). Do not use
flux material.
- Flush the piping before brazing with nitrogen to avoid oxidation of the inside of
the copper tubes (nitrogen purity ≥99.99%).
5.3 External factors
5.3.1 Checking procedures
To check the outdoor temperature
1 The temperature ranges for the different operation modes of the unit can be
found in the databook on Business Portal.
INFORMATION
If the outdoor temperature is outside the range of operation, the unit may NOT
operate or may NOT deliver the required capacity.
Is the outdoor temperature within the
operating range? Action
Yes Return to the troubleshooting of the
specific error and continue with the
next procedure.
No Wait for the outdoor temperature to
return within the operating range.
To check for objects that may block the airflow
1 Check for the presence of object(s) near the indoor unit that may block the
airflow. Remove the object(s) as needed.
Is the problem solved? Action
Yes No further actions required.
No Return to the troubleshooting of the
specific error and continue with the
next procedure.