Hello,
my parents-in-law, my wife, and I are undertaking a major project to divide a terraced house into two units: one for the seniors in the basement and one for the younger generation, expecting a child, on the raised ground floor and attic. The conservatory, guest toilet, laundry room, workshop, heating system (located in the basement, top right), and sauna will be shared areas.
The attic has a floor area of 74 sqm (795 sq ft) with a base height of 1.02 m (3 ft 4 in) and a roof pitch of 23°, so there is not much space with a height over 1.8 m (6 ft). Access is from the conservatory via an open staircase.
So far, only the supply and waste pipes as well as the heating pipes run through the area where I have marked the toilet. Except for the chimney, the room is completely open.
We plan to install our bathroom where the pipes come up from the basement (our bed will be placed in the bottom right corner, and a workspace will be created on the left). Below the roof window, there will be a bathtub (my wife takes a bath every other day), and a double sink will be installed on the right side on the recessed wall.
Now, the focus is on the hot water supply.
The simplest solution would be to connect the bathtub and sink to the hot water from the basement. However, since there is no circulation pipe installed, it would probably take a very long time to get hot water at the sink, as the pipe would be about 20 m (66 ft) long.
Therefore, we are considering installing an electric point-of-use water heater directly behind the sink (theoretically, a small instant water heater would be sufficient) but still using the hot water from the basement for the bathtub.
What do you think? Which type of hot water supply would be the most practical for our needs?
Best regards from
Babenhausen
my parents-in-law, my wife, and I are undertaking a major project to divide a terraced house into two units: one for the seniors in the basement and one for the younger generation, expecting a child, on the raised ground floor and attic. The conservatory, guest toilet, laundry room, workshop, heating system (located in the basement, top right), and sauna will be shared areas.
The attic has a floor area of 74 sqm (795 sq ft) with a base height of 1.02 m (3 ft 4 in) and a roof pitch of 23°, so there is not much space with a height over 1.8 m (6 ft). Access is from the conservatory via an open staircase.
So far, only the supply and waste pipes as well as the heating pipes run through the area where I have marked the toilet. Except for the chimney, the room is completely open.
We plan to install our bathroom where the pipes come up from the basement (our bed will be placed in the bottom right corner, and a workspace will be created on the left). Below the roof window, there will be a bathtub (my wife takes a bath every other day), and a double sink will be installed on the right side on the recessed wall.
Now, the focus is on the hot water supply.
The simplest solution would be to connect the bathtub and sink to the hot water from the basement. However, since there is no circulation pipe installed, it would probably take a very long time to get hot water at the sink, as the pipe would be about 20 m (66 ft) long.
Therefore, we are considering installing an electric point-of-use water heater directly behind the sink (theoretically, a small instant water heater would be sufficient) but still using the hot water from the basement for the bathtub.
What do you think? Which type of hot water supply would be the most practical for our needs?
Best regards from
Babenhausen
B
Babenhausen2 Mar 2020 09:27Hello,
thanks for the responses.
As I mentioned, we would only use the instantaneous water heater for the two washbasins, so a small unit with 5.7 kW should be sufficient. As far as I know, you don’t need to notify the utility provider for that. It should therefore be a device costing up to around 200€. We only need one unit; any slightly warmed water is more comfortable than cold water. So this would not be suitable for the bathtub.
The idea of a pump that can be connected to the bathroom light switch, for example, isn’t a bad one at all.
A plumber is coming again tomorrow. Let’s see what he thinks about the matter.
Best regards from
Babenhausen
thanks for the responses.
As I mentioned, we would only use the instantaneous water heater for the two washbasins, so a small unit with 5.7 kW should be sufficient. As far as I know, you don’t need to notify the utility provider for that. It should therefore be a device costing up to around 200€. We only need one unit; any slightly warmed water is more comfortable than cold water. So this would not be suitable for the bathtub.
The idea of a pump that can be connected to the bathroom light switch, for example, isn’t a bad one at all.
A plumber is coming again tomorrow. Let’s see what he thinks about the matter.
Best regards from
Babenhausen
Vicky Pedia2 Mar 2020 21:09Write and let us know how it continues!
B
Babenhausen3 Mar 2020 12:01The plumber (who also carries out regular heating maintenance) spent almost 90 minutes here this morning but arrived at 7:45 AM instead of 7:30 AM. The discussion also involved the type of heating for this room (underfloor heating like on the ground floor or radiators like in the basement).
There is already a circulation pipe with a pump installed in the house, but it had been switched off the whole time. It has now been set to run for 3 minutes with 7 minutes of downtime.
Currently, only a 50mm (2 inch) pipe from the attic leads to the sewer, but since we need a larger pipe for the toilet and actually also for the bathtub (over 3m (10 feet) in length), he recommends completely renewing the approximately 20-year-old pipes coming from the basement and connecting them to the existing circulation system.
Over the weekend, I’m supposed to check whether the wastewater pipe runs straight down into the main sewer line or if it takes a detour through the suspended ceiling and the built-out wall of the guest toilet.
I’m getting to know my parents-in-law’s house better all the time.
There is already a circulation pipe with a pump installed in the house, but it had been switched off the whole time. It has now been set to run for 3 minutes with 7 minutes of downtime.
Currently, only a 50mm (2 inch) pipe from the attic leads to the sewer, but since we need a larger pipe for the toilet and actually also for the bathtub (over 3m (10 feet) in length), he recommends completely renewing the approximately 20-year-old pipes coming from the basement and connecting them to the existing circulation system.
Over the weekend, I’m supposed to check whether the wastewater pipe runs straight down into the main sewer line or if it takes a detour through the suspended ceiling and the built-out wall of the guest toilet.
I’m getting to know my parents-in-law’s house better all the time.
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