1600 CFM to 1800.
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1600 CFM to 1800.
Like I said the top of the squirrel cage housing might be restricting the outlet of the coil.
The fact that the coil door is 3 inches away from a wall is the kind of stuff that drives a technician crazy. A little instant karma for the installer who had to change the txv though!
So for all we know the system could have non-condensibles in the system. Did the HVAC company recover all the charge and re evacuate the system or have they simply been adding and subtracting charge?Quote:
Originally Posted by THPRE
Was this equipment bought from online dealer and then installed by friend contractor?
The equiptment was purchased by my contractor [friend] from a local refergeration supply house. One of the two biggest in this area. He has since gone back to a different manufacturer and does not have these troubles any more. Yes he has removed the entire refergerant load more than once and has done a lengthy evacuation every time he emptied the system.
So a factory charge level will result in a high head pressure?Quote:
Originally Posted by THPRE
A 90% of normal charge should result in lower head pressures and plenty of charge to cool properly. If not then there is a fundamental refrigeration issue.
Whenever your guy gets the cooling working properly, how much charge is in the system at that point? And what's the nameplate charge amount in comparison?
You may have an air flow and charge level issue and both are contributing to the high head.
Your mechanical room is at least 25" deep and likely deeper than that. The air handler should have been offset to the rear of your mechanical room so there is room for the txv. If your guy won't go to that extent then he can relocate the txv to the interior of the coil cabinet. This will allow him to mount the coil properly. This will eliminate the possible air flow restriction and not drive the next technician friggin nuts when he sees that coil access.
Seriously, it'd be nice to head that issue off now. I've been doing this awhile and my patience for that sort of thing (installing without regard for access ect.) has completely vanished.
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There's not enough supply plenum to get an average temperature rise from heating elements that are downstream of the fan IMHO. Been there done that. The wet bulb/dry bulb test could be used in a few months though. Actually roseburg is expecting temps in the mid 60s around February fourth. It could be worth a shot then.Quote:
Originally Posted by MrDodge
The cabinet is 24 1/2 deep and 27 wide and 115in tall. Once the thing works I will make a permanent door for the front of the cabinet. For now there is a piece of sheetrock that fits the opening and seals it off. Top of the coil cabinet is 65 inches above the floor. So plenum area above the coil is 24 1/2 x 27 and 40in. tall.
The air handler is 24 3/4 deep and 21 1/2 wide. Unit is within 1/2 in of rear of cabinet. I think this means that the coil cabinet and the blower cabinet are properly oriented respective to each other. And afterall if you open the door the tx valve is certainly accessable - just close to one wall. I think he did the best he could without building a new cabinet which would take up some of the watersoftner space.
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The way that the coil sits on top of the blower is fine. Both door panels are in line.
Overcharged, probably airflow issue to begin with.
Probably had to jack in refrigerant to keep it from freezing.
You need a real professional, not someone stumbling through this.
Him changing the indoor TXV to help with a heating issue forces me to say this.
I'd assume this "check me" test is flawed, and not use its results. Mostly because it's government related.