what formulas are used to charge water source heat pump by pressures?
if metering devise is txv use subcooling if orfice use charging chart and superheat
why do you need to charge it. geo units come charged and all you do is hook up the water
you dont charge wshp's by pressures you weigh the charfe in!!!!!
try this link from a while back
[Edited by acddc on 04-10-2005 at 02:48 AM]
All my leon freaked out!
weight the charge and add a few extra ounces to compensate for the refrigerant trapped in your hoses, those units are very anal about their charge, every time you hook your gauges to one of them,fill you hoses with refrigerant before you do it.