Follow on Google News News By Tag Industry News * Hvac * More Industries... News By Place Country(s) Industry News
Follow on Google News | Convert R-22 To R-421 No Equipment Change!In today’s society, things change at an alarming rate. Make sure your HVAC professional is up to date on the new technology. Your HVAC system is a big investment, If you allow under trained technicians to work on it, it could cost you a lot.
By: Allied Air Heating ans Cooling What you should hear from a qualified technician: · It starts by a full recovery of the R-22 that is in the system for disposal (30 to 60 min.) · Followed by a nitrogen charge and leak test (minimum 30 min.) · If leak is found, repair and repeat leak test · Flush the line- set and evaporator coil with nitrogen · Flush the same with RX11 line flush kit · Repeat nitrogen flush · Do the same for the condenser ( from low side to high side as not to lose the oil) · Replace or add the correct size liquid line filter/dryer · Charge with minimum 75psig maximum 125psig for leak test (30 min.) · If leak is found, repair and repeat leak test · 421 does requier a vacuum of 500 microns held for at least 5 minutes is mandatory · Charge with 421 using the equipment manufactures charge table · Add the prescribed charge for the length of line-set. · Start system and operate for 20 minutes · Calculate and check for the prescribed sub-cool and superheat readings · Adjust as necessary to achieve required levels End
Account Email Address Account Phone Number Disclaimer Report Abuse
|
|