franticvike
Member
Hi,
(Mods, if this should be in another sub forum please let me know)
I've been running a Navien 240S on demand water heater for about a year in my house. Apart from having to wait for the heat at the shower it worked great. I'm doing a reno though and have added a couple bathrooms, and with weak city water pressure (I have 3/4" from the city) I was looking for a way to keep decent pressure across multiple taps (I have a manifold controlling each floor of the house).
After some research and calling around I settled on the Grudfos Scala 2. I've got it installed now and pressure is excellent. However, the pump seems to have introduced a new problem whereby the water temperature now fluctuates quite significantly during a shower. (I should add that I have 20L - 12 gallon - how water buffer tanks for two of the floors in the house and the problem is only noticeable on the floor without a buffer tank)
Previously the hot water was dead consistent for as long as you'd like to run it. Now it goes up and down, like in a wave pattern, easily dropping 10C for 20 seconds or so before returning to set temperature.
I haven't found anything in the literature for either the pump or the water heater so now I'm casting about hoping someone will have some insight.
Many thanks!
(Mods, if this should be in another sub forum please let me know)
I've been running a Navien 240S on demand water heater for about a year in my house. Apart from having to wait for the heat at the shower it worked great. I'm doing a reno though and have added a couple bathrooms, and with weak city water pressure (I have 3/4" from the city) I was looking for a way to keep decent pressure across multiple taps (I have a manifold controlling each floor of the house).
After some research and calling around I settled on the Grudfos Scala 2. I've got it installed now and pressure is excellent. However, the pump seems to have introduced a new problem whereby the water temperature now fluctuates quite significantly during a shower. (I should add that I have 20L - 12 gallon - how water buffer tanks for two of the floors in the house and the problem is only noticeable on the floor without a buffer tank)
Previously the hot water was dead consistent for as long as you'd like to run it. Now it goes up and down, like in a wave pattern, easily dropping 10C for 20 seconds or so before returning to set temperature.
I haven't found anything in the literature for either the pump or the water heater so now I'm casting about hoping someone will have some insight.
Many thanks!