moondawn
03-04-2005, 10:42 PM
Hi There
new to this forum, very impressed with reading through posts, learnt things from reading.
wonderin if anyone can help
the other day went to a site where a hitachi ducting unit outdoor unit ras 6 was faulting on 02 fault. checked pressures on condensor suction was at 28-30 psi and head pressure at 90 psi. decided to decant system. decanted in total 9.3 kg of gas maxmum total charge for one of those systems should be no more than 7.8kg i think. system would not say more than 35 mtre run. put the pre charge in which is 6.1kg of r22 gas.commisioned system and ran with no faults. was told that sysytem should run at 50-55 psi and that head pressure about 200 psi. ran system and got pressures 32psi and 160 psi unit was cooling well.
one question: would systems pressures be runnin lower if indoor unit is undersized . i am thinkin sysytem has come overcharged as its maintained people have seen pressures very low
thanks in advance
new to this forum, very impressed with reading through posts, learnt things from reading.
wonderin if anyone can help
the other day went to a site where a hitachi ducting unit outdoor unit ras 6 was faulting on 02 fault. checked pressures on condensor suction was at 28-30 psi and head pressure at 90 psi. decided to decant system. decanted in total 9.3 kg of gas maxmum total charge for one of those systems should be no more than 7.8kg i think. system would not say more than 35 mtre run. put the pre charge in which is 6.1kg of r22 gas.commisioned system and ran with no faults. was told that sysytem should run at 50-55 psi and that head pressure about 200 psi. ran system and got pressures 32psi and 160 psi unit was cooling well.
one question: would systems pressures be runnin lower if indoor unit is undersized . i am thinkin sysytem has come overcharged as its maintained people have seen pressures very low
thanks in advance