View Full Version : High and low pressure cut off

07-02-2006, 10:05 PM
In R410a system, what is considered to be a good cut in and cut off for the high and the low pressure switch?

08-02-2006, 01:05 AM
what type system,air-cooled or water cooled,heat pump operation? the low and high pressure should consider the compressor permitted work range and system performance requierment. would u pls give some background?


08-02-2006, 03:35 PM
It is an air-cooled condenser for a commercial split system. I just need the normal range to start. Thanks for the help.

Mushtaq Kumbay
08-02-2006, 03:54 PM
check the condensing temperature on your 410a gauges and set it at about 20c degrees above the condensing temp

08-02-2006, 06:27 PM
Hp is related to the max allowable pressure of our compressor
If temperature can rise to 32 ambient with a DT of 14 K, then 28 bar and 9 bar DP.
LP 7 bar cut in and 2.5 DP if it only needs to cool in summer.