ReplyNo idea why you have trouble.
Don't know what you mean not as accurate either.
Professional Member
How is it when i go on S.C. i allways have problems reading S.H. and Sub-cooling with a flowrator system , and its not as accurate a TXV.
Some one give some ideas about this , and how to go about it !
Matt 7:12 The Golden Rule
"Do for others what you would like them to do for you. This summary of all is taught in the law and the prophets.
God Speed, Jim. We'll miss you - 2-26-23
No idea why you have trouble.
Don't know what you mean not as accurate either.
No return.
You gottta re word that a little differently. It's not clear what you mean.
Professional Member
a TXV - use sc to maintain a collum of liquid at valve and constant evap sh, caps and flow devices - use sh which is dependant on condenser pressure for flow, greater cond pressure greater mass flow. Question a little unclear hope this helps
Professional Member
The temputures dont seem to be steady the , sub-cooling goes up with time and i got a 10 * swing up and down on S.H . Like an example like thisOriginally Posted by derbysr
How is it when i go on S.C. i allways have problems reading S.H. and Sub-cooling with a flowrator system , and its not as accurate a TXV.
Some one give some ideas about this , and how to go about it !
54* to 44* and then up she goes and then down to the same bottom line 44* .
Matt 7:12 The Golden Rule
"Do for others what you would like them to do for you. This summary of all is taught in the law and the prophets.
No return.
Is this a fixed metering device or TXV you're refering to?The temputures dont seem to be steady the , sub-cooling goes up with time and i got a 10 * swing up and down on S.H . Like an example like this
54* to 44* and then up she goes and then down to the same bottom line 44* .
God Speed, Jim. We'll miss you - 2-26-23
A fixed metering device system will sometimes hunt when its low on charge.
It also appears to hunt sometimes after the coil has been frozen. Due to oil having been washed out of the compressor, and now moving through the evap.
Have you applied for pro membership yet.
These are question that are more technical in nature then we should be going into in the open forums..
They may close or delete it soon.
No return.
??????????????????????????
God Speed, Jim. We'll miss you - 2-26-23
And your question is???????????????????????????????????????????????? ?????????????????????????????????????????????????? ??????????
Is this a technical question for the resi area, or one that should be in the pro area.
No return.
Not so sure hunting is a word that I would use in conjunction with a fixed bore metering device.
God Speed, Jim. We'll miss you - 2-26-23
Won't say its 100% correct terminology, but close enough for me.
I failed Terminology 101.
No return.
C'mon man! How's that being fair to the OP?
God Speed, Jim. We'll miss you - 2-26-23
Because that is what very well may be happening.
And I'm not allowed to explain it much better in this forum.
Professional Member
Fixed metering device / flowrater / "not an expansion Valve "
Since i brought this into a open Residential Forum , its need to be addresed in a more "techical view" .
Matt 7:12 The Golden Rule
"Do for others what you would like them to do for you. This summary of all is taught in the law and the prophets.
No return.
OK, when you clarify exactly what you want to know give somebady a shout
in the Pro Tech Forums.
Good luck.
Last edited by hvaclover; 06-26-2008 at 02:19 PM.
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