Senville Aura: Difference between revisions
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**Manufacturers state it is ok. Installers say 'install it properly by cutting to size'. Who do you trust? [https://hvac-talk.com/vbb/threads/1620681-Mini-Split-line-set-looped] | **Manufacturers state it is ok. Installers say 'install it properly by cutting to size'. Who do you trust? [https://hvac-talk.com/vbb/threads/1620681-Mini-Split-line-set-looped] | ||
**5-10' coiled - works 3 years running [https://www.garagejournal.com/forum/threads/can-you-coil-line-sets.400977/]. Other guys in same thread say that coiling will fail after some time. If coiled, lay them out horizontally. | **5-10' coiled - works 3 years running [https://www.garagejournal.com/forum/threads/can-you-coil-line-sets.400977/]. Other guys in same thread say that coiling will fail after some time. If coiled, lay them out horizontally. | ||
**Inspectors say any oil trap is not good. If coil, do so horizontally - [https://forum.nachi.org/t/refrigerant-line-coil/75700/18] | |||
**Summary - shorten line set and adjust charge. Coiling may work according to manufacturer. Interpretation - if manufacturers say it's ok, it should be ok because if they misled the public, they would go out of business. Assuming manufacturers have integrity, we are ok. [https://www.garagejournal.com/forum/threads/can-you-coil-line-sets.400977/] | **Summary - shorten line set and adjust charge. Coiling may work according to manufacturer. Interpretation - if manufacturers say it's ok, it should be ok because if they misled the public, they would go out of business. Assuming manufacturers have integrity, we are ok. [https://www.garagejournal.com/forum/threads/can-you-coil-line-sets.400977/] | ||
*First principle calculations say - Say there is 8 feet of coil left. | *First principle calculations say - Say there is 8 feet of coil left. | ||
Revision as of 19:41, 25 January 2022
Installation
Notes
- It is not clear whether tubing can be left coiled - [1]. Install manuals say so - one of the diy systems with precharged line sets there instructions specifically state to coil the excess at the system. - but author speculates that since lubricating oil is also carried with refrigerant, there could be an issue.
- This link says coiling is ok (see comments) [2]
- Manufacturers state it is ok. Installers say 'install it properly by cutting to size'. Who do you trust? [3]
- 5-10' coiled - works 3 years running [4]. Other guys in same thread say that coiling will fail after some time. If coiled, lay them out horizontally.
- Inspectors say any oil trap is not good. If coil, do so horizontally - [5]
- Summary - shorten line set and adjust charge. Coiling may work according to manufacturer. Interpretation - if manufacturers say it's ok, it should be ok because if they misled the public, they would go out of business. Assuming manufacturers have integrity, we are ok. [6]
- First principle calculations say - Say there is 8 feet of coil left.
Key Videos
- Point - disconnect vacuum After filling up low pressure side with 1 PSI of refrigerant- [7]
- 1 lb? Not 1 atm? Under 1 lb, 14 psi of atmosphere would mean that air actaully leaks into the tubing.
- Note that instructions say to 'let in refrigerant for 5 seconds with quarter turn of valve' - steps 9-10 on page 30 of manual [8]. This is not correct - we should look at the actual valve, no? Video says 1 lb - also not correct. The right way should be to look at the valve, not by time - but by when valve reads a little above atmospheric pressure of 14 psi.
Manual
R-410A - Refrigerant
- https://www.rses.org/assets/r410a/R-410A.PDF
- Pressure-Temperature chart is shown at end of PDF above
Build Pictures
Specs
Heat pump for heating and cooling that works down to -20F. 7kW of heat.
Mounting Bracket
- $70 - [10]
Troubleshooting
- Vacuum doesn't draw down - [11]