Hi there,
First time home owner, and realized the previous owner installed an awesome condensing furnace which was a nice surprise.
Over the winter, after a big snow storm in Boston, now I'm starting to hear furnace gargling sound when it starts up. Everything still works and the furnace fires up fine. I'd like to ask you guys if this is something I should be concerned with.
I did have the HVAC company that installed my system coming in for a quick look - they extended the drain vent tube to suppress the noise, and told me the issue is due to slightly insufficient gravity. My HVAC technician told me the alternative solution is to install a condensate pump but honestly that's more things to fail down the road.
unfortunately, I can't post a picture as I'm a new member - but here it is--ibb.co/FmDwFjR
I can see when the gargling happens, it's 'pull' water from the coil condensate trap, so I think there's some negative pressure going on.
I also looked through Trane's manual for S9V2 (not VS but very close), it does say a trap is not needed on page 62 and just a open vented drain is required.
I'm wondering in my case where gravity force is a bit 'weak', if a running trap or a P-trap should be installed instead. Any expertise opinion will be really appreciated here. Thanks a lot and really appreciate all your insight.
First time home owner, and realized the previous owner installed an awesome condensing furnace which was a nice surprise.
Over the winter, after a big snow storm in Boston, now I'm starting to hear furnace gargling sound when it starts up. Everything still works and the furnace fires up fine. I'd like to ask you guys if this is something I should be concerned with.
I did have the HVAC company that installed my system coming in for a quick look - they extended the drain vent tube to suppress the noise, and told me the issue is due to slightly insufficient gravity. My HVAC technician told me the alternative solution is to install a condensate pump but honestly that's more things to fail down the road.
unfortunately, I can't post a picture as I'm a new member - but here it is--ibb.co/FmDwFjR
I can see when the gargling happens, it's 'pull' water from the coil condensate trap, so I think there's some negative pressure going on.
I also looked through Trane's manual for S9V2 (not VS but very close), it does say a trap is not needed on page 62 and just a open vented drain is required.
I'm wondering in my case where gravity force is a bit 'weak', if a running trap or a P-trap should be installed instead. Any expertise opinion will be really appreciated here. Thanks a lot and really appreciate all your insight.
source https://hvac-talk.com/vbb/showthread.php?2226372-horizontal-S9V2-VS-do-I-need-a-condensate-drain-trap&goto=newpost
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