New Bosch heat pump tumble dryer
Discussion
Guys, just started to use a new Bosch heat pump tumble dryer plumbed in to drain via a hose, I assumed no water would collect in the condensation container but it does, I'm told it's normal. Can someone from the Pistonheads collective confirm and give a brief explanation?................Thanks
I have a similar issue, though the tumble dryer is a Samsung. There is a lot less water in the collection vessel than I had when it was not plumbed into the drain previously. I imagined there would be no water collected, all would drain away, but not so.
It will be interesting to hear why this is.
It will be interesting to hear why this is.
I have one (bosch (self cleaning condenser) air pump) and what it does is this: (I know because I stripped it and replaced the sump(condensation) pump so tested it and watched how it works)
It fills the top removable water tank until i reaches a certain level. Once at that level, it overflows into the tank at the bottom of the machine through a specific drain hole.
Once the bottom tank hits a certain level and triggers a sensor (two wires, basically). It now knows the top tank is full, as is the bottom.
It uses this info to
a) pump out the bottom tank
b) dump the top tank through the condensor to clean it. It does this by opening a large hole in the top tank(cassette) base.
c) pump out the remaining bottom tank.
This is the entire reason it keeps the top tank full for some time. For cleaning the condensor (of fluff etc).
Confused the hell out of me as I was pondering what the large "dump hole" was for in the top tank/cassette, so I filled it manually to check the condesnor pump was working, and watch the whole process.
Just make sure you pipe arrangement is correct on the back of the machine.
It fills the top removable water tank until i reaches a certain level. Once at that level, it overflows into the tank at the bottom of the machine through a specific drain hole.
Once the bottom tank hits a certain level and triggers a sensor (two wires, basically). It now knows the top tank is full, as is the bottom.
It uses this info to
a) pump out the bottom tank
b) dump the top tank through the condensor to clean it. It does this by opening a large hole in the top tank(cassette) base.
c) pump out the remaining bottom tank.
This is the entire reason it keeps the top tank full for some time. For cleaning the condensor (of fluff etc).
Confused the hell out of me as I was pondering what the large "dump hole" was for in the top tank/cassette, so I filled it manually to check the condesnor pump was working, and watch the whole process.
Just make sure you pipe arrangement is correct on the back of the machine.
Edited by Griffith4ever on Monday 20th June 20:34
Griffith4ever said:
I have one (bosch (self cleaning condenser) air pump) and what it does is this: (I know because I stripped it and replaced the sump(condensation) pump so tested it and watched how it works)
It fills the top removable water tank until i reaches a certain level. Once at that level, it overflows into the tank at the bottom of the machine through a specific drain hole.
Once the bottom tank hits a certain level and triggers a sensor (two wires, basically). It now knows the top tank is full, as is the bottom.
It uses this info to
a) pump out the bottom tank
b) dump the top tank through the condensor to clean it. It does this by opening a large hole in the top tank(cassette) base.
c) pump out the remaining bottom tank.
This is the entire reason it keeps the top tank full for some time. For cleaning the condensor (of fluff etc).
Confused the hell out of me as I was pondering what the large "dump hole" was for in the top tank/cassette, so I filled it manually to check the condesnor pump was working, and watch the whole process.
Just make sure you pipe arrangement is correct on the back of the machine.
Thanks Griffith, nice explanation. I'll investigate, including the drain hose arrangement.It fills the top removable water tank until i reaches a certain level. Once at that level, it overflows into the tank at the bottom of the machine through a specific drain hole.
Once the bottom tank hits a certain level and triggers a sensor (two wires, basically). It now knows the top tank is full, as is the bottom.
It uses this info to
a) pump out the bottom tank
b) dump the top tank through the condensor to clean it. It does this by opening a large hole in the top tank(cassette) base.
c) pump out the remaining bottom tank.
This is the entire reason it keeps the top tank full for some time. For cleaning the condensor (of fluff etc).
Confused the hell out of me as I was pondering what the large "dump hole" was for in the top tank/cassette, so I filled it manually to check the condesnor pump was working, and watch the whole process.
Just make sure you pipe arrangement is correct on the back of the machine.
Edited by Griffith4ever on Monday 20th June 20:34
gra001 said:
Guys, just started to use a new Bosch heat pump tumble dryer plumbed in to drain via a hose, I assumed no water would collect in the condensation container but it does, I'm told it's normal. Can someone from the Pistonheads collective confirm and give a brief explanation?................Thanks
Have you made the adjustments in the condensation container? You need to turn the insert upside down and remove the plug or something like that. If this doesn't ring a bell, check the instructions. My plumber didn't and I wondered why it wasn't draining, until I read them!
number2 said:
Have you made the adjustments in the condensation container? You need to turn the insert upside down and remove the plug or something like that.
If this doesn't ring a bell, check the instructions. My plumber didn't and I wondered why it wasn't draining, until I read them!
Small rubber bung in the base of the cassette- to allow it to drain down to the bottom tank,If this doesn't ring a bell, check the instructions. My plumber didn't and I wondered why it wasn't draining, until I read them!
Griffith, you mentioned a switch triggers when the bottom AND top tanks are full so the dumping process can work. If the rubber bung in the cassette small drain hole is not removed (as mine wasn't) then draining to the bottom would not take place and the top tank would overflow?......mine certainly looked as if it was about to?
If no drain hose is fitted and the rubber bung remains (no draining to bottom tank) how does the cleaning process take place? I assume in this instance there is a system to stop the cycle so the condensation container can be emptied manually and prevent overflowing?
If no drain hose is fitted and the rubber bung remains (no draining to bottom tank) how does the cleaning process take place? I assume in this instance there is a system to stop the cycle so the condensation container can be emptied manually and prevent overflowing?
The top tank has two holes. The small one with the bung at the rear left (on mine), and a much bigger hole with a mechanically operated flap. The flap is operated by a motorised lever. The exact layout I'd have to check as this is from memory.
When it's cleaning time the flap is opened and the water rushes down a large internal tube to the condenser matrix at the bottom and then back into the main lower tank.
There is a pump in the bottom tank with an electric diverter. When it pumps it either pumps out to waste (with the external pipe you fit), or , back up to the top tank ready for a cleaning "flush" / or cassette removal if you don't have it plumbed in.
I assumed there would be a water sensor up top but from memory, there is only one in the bottom internal tank (part of the pump assembly). The top tank has a built in overflow "dam" that allows water to return to the bottom when full and this is how the system knows the top is full, regardless of if you have to remove it, or, it's time for the system to flush or drain if you have it plumbed in.
The top tank can overflow even with the bung in (over the top square hole at the back), and there is a hole below it (in the actual housing for the cassette) to catch that water and fill the bottom tank, regardless. The bung is just so we can carry the cassette without it leaking everywhere . Removing it simply means the cassette doesn't have to completely fill before the bottoms tank starts to fill.
If you don't remove it AND don't plumb in the waste, the top will get full, then the bottom will get full, then the bottom sensor will see this and try to pump the water out, but it will get pumped back up instead, and the system will then tell you to empty the cassette.
If you plump it in but leave the bung in I assume it should work as intended but the cassette will just be constantly full.
Note: what confused me at first was assuming the condensation was something that happened up top, like a kettle boiling. It's not, it all gets collected at the base in the bottom tank, and is then pumped up, or out.
When it's cleaning time the flap is opened and the water rushes down a large internal tube to the condenser matrix at the bottom and then back into the main lower tank.
There is a pump in the bottom tank with an electric diverter. When it pumps it either pumps out to waste (with the external pipe you fit), or , back up to the top tank ready for a cleaning "flush" / or cassette removal if you don't have it plumbed in.
I assumed there would be a water sensor up top but from memory, there is only one in the bottom internal tank (part of the pump assembly). The top tank has a built in overflow "dam" that allows water to return to the bottom when full and this is how the system knows the top is full, regardless of if you have to remove it, or, it's time for the system to flush or drain if you have it plumbed in.
The top tank can overflow even with the bung in (over the top square hole at the back), and there is a hole below it (in the actual housing for the cassette) to catch that water and fill the bottom tank, regardless. The bung is just so we can carry the cassette without it leaking everywhere . Removing it simply means the cassette doesn't have to completely fill before the bottoms tank starts to fill.
If you don't remove it AND don't plumb in the waste, the top will get full, then the bottom will get full, then the bottom sensor will see this and try to pump the water out, but it will get pumped back up instead, and the system will then tell you to empty the cassette.
If you plump it in but leave the bung in I assume it should work as intended but the cassette will just be constantly full.
Note: what confused me at first was assuming the condensation was something that happened up top, like a kettle boiling. It's not, it all gets collected at the base in the bottom tank, and is then pumped up, or out.
Edited by Griffith4ever on Tuesday 21st June 09:04
Edited by Griffith4ever on Tuesday 21st June 09:07
gra001 said:
Yes guys, after reading the installation instructions about ten times I spotted the small rubber bung issue, it hadn't been swapped out by the builders.......incompetence! I've done that now, your clarification gives me hope that it'll be sorted. Thanks, a big help.
If in doubt it will normally be human interaction gone wrong, good that’s its been sorted!
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