EcoRenovator - View Single Post - Water-to-water heat pump rebuild?

Mikesolar · 01-05-13, 08:01 PM

I think your comp is slightly smaller than the original one so you will need turn down the TXV somewhat but not much because you only need a 2-3deg increase in superheat (which the comp will like). Ideally you will want to get some more subcooling out of the condenser and to do that you may want to increase the liquid flow rate through the condenser a bit. Are there any balancing valves on it?

You may want to try doing that before changing the TXV but you may need to do both.

01-05-13, 08:01 PM	#6
Mikesolar Master EcoRenovator Join Date: Aug 2012 Location: Toronto Posts: 958 Thanks: 40 Thanked 158 Times in 150 Posts	I think your comp is slightly smaller than the original one so you will need turn down the TXV somewhat but not much because you only need a 2-3deg increase in superheat (which the comp will like). Ideally you will want to get some more subcooling out of the condenser and to do that you may want to increase the liquid flow rate through the condenser a bit. Are there any balancing valves on it? You may want to try doing that before changing the TXV but you may need to do both.