Hot answers tagged hvac
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This is an acceptable solution for multi-tenant buildings where the exhaust fans from multiple units vent in to a common duct. The booster fan in the floor vent makes sure that the air pressure in the room being vented is higher than the common duct. The booster fan can pull air through the central AC/hear air handler even if it's not running. This lightens ...
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It sounds like you still have some rewiring left to do, the fan shouldn't stop while the compressor is on. If the fan isn't on, your air conditioner won't be able to dissipate all of the heat that is generated by the compressor, making the compressor less effective ( or not at all effective ).
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I would strongly encourage you to replace this unit (the Siemens component, not the entire AC) and replace the ends to those electrical wires. Simply put if the rust situation is that terrible I wouldn't be at all surprised if the integrity of the unit is already compromised, i.e. ready to fail you at any time. Your yellow wire is almost certainly why it's ...
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I don't have HVAC experience but here's a few ideas you could investigate
Repair
For the wires, it might be best to cut off the corroded connectors strip a short part of insulation and crimp on new connectors.
For the spade terminals on the various devices you could use a wire brush to remove as much corrosion as possible.
Prevention
To prevent future ...
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IMO that amount of rust is not normal. I live in Texas and it gets really humid sometimes. I've repaired both my last unit that was 8+ years old and my new unit that is 4+ years old and neither had any rust whatsoever inside the enclosure. Just ants and spiders for me.
I'd imagine that your relay is having trouble closing. After turning off the power you ...
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Almost certainly you should shut off the upstairs AC completely. Ideally you would also seal off the second floor as much as by shutting a door at the top or bottom of the stairs (or installing a curtain across it or something).
The only reasons I can think of to leave it on would be:
If you have any valuable artwork or antique / fragile wood furniture ...
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The multi-stage burners are much quieter at low burn, as are multi speed/variable speed blower motors. These features are available for most 90% and higher furnaces.
A nice co-generation water heater (hot water for heat and a super storage unit for potable hot water) would be very quiet, but conversions costs to add radiators would not likely fly.
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Outdoor rated cat5/6 has temperature ranges from -5 to -15 F to 160-170 F. I know that I have seen cable ran through commercial ducts. Do I know if it passed local inspection? No.
That being said a home duct would come no where close to 150 degrees F - not talking about duct work from ovens. I guess you would worry about the casing becoming soft and ...
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I don't know about closing off the second floor. Depending on your climate it could possibly get to over 100 degrees if it is totally closed off - and possibly well above that. It could also get really humid.
And I doubt you have insulation between the two floors. So not only with the temperature changes are you rolling the dice with drywall cracking, ...
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