First - an apology for monopolising the forum with all my plumbing questions! I'm hoping this will be my last and I'll move onto something else (like choosing a woodburner, which is the next thing on the to do list)...
My situation... We've having a bathroom refit and will have a new bath with shower mixer tap. We've got an oil boiler and vented system. We're eco minded and are happy with a very weak shower. In fact, that's our preference. So we don't want to install a pump, shower power, new unvented cylinder, etc. etc. There will be another shower in the house too. The cold is currently mains.
I've narrowed it down to two options:
1. Put a pressure equalising valve under the bath so the hot and cold have matched pressure.
2. Run a cold feed from the tank in the loft, so both hot and cold are gravity fed. (The tank is 40 Gallon actual / 60 Gallon nominal).
Some relevant points for both 1 and 2:
- Is a 40/60 gallon tank large enough to run the cold and hot from?
- The tank isn't far away from the bathroom ceiling, so wouldn't need a long run of pipe to get to he shower mixer tap
- The pipe from the loft would be coming down the tap end wall of the bath, so would need to be chased in / tiled over. However, the mains cold goes up to the loft on the wall too, so there's already a pipe being chased in there...
- The mains cold comes up from the room below where the bath will be (tap end)
- The bath panel will be removable, so accessing the PEV wouldn't be an issue
- Future proofing... Hopefully the boiler has years left in it, but if/when it goes we don't know what we'll go for next. Are PEVs useful in unvented and/or combi boiler set ups (when used with bath shower mixer taps)? I've read very opposing answers to that question!
- I presume performance will be similar in both set ups, so if there's likely to be a big price difference between the two then that might help decide.
I'll add a poll for the sake of it.
A vote, or a thought on any of the above, would be most welcomed.
Many thanks and have a great weekend everyone.
My situation... We've having a bathroom refit and will have a new bath with shower mixer tap. We've got an oil boiler and vented system. We're eco minded and are happy with a very weak shower. In fact, that's our preference. So we don't want to install a pump, shower power, new unvented cylinder, etc. etc. There will be another shower in the house too. The cold is currently mains.
I've narrowed it down to two options:
1. Put a pressure equalising valve under the bath so the hot and cold have matched pressure.
2. Run a cold feed from the tank in the loft, so both hot and cold are gravity fed. (The tank is 40 Gallon actual / 60 Gallon nominal).
Some relevant points for both 1 and 2:
- Is a 40/60 gallon tank large enough to run the cold and hot from?
- The tank isn't far away from the bathroom ceiling, so wouldn't need a long run of pipe to get to he shower mixer tap
- The pipe from the loft would be coming down the tap end wall of the bath, so would need to be chased in / tiled over. However, the mains cold goes up to the loft on the wall too, so there's already a pipe being chased in there...
- The mains cold comes up from the room below where the bath will be (tap end)
- The bath panel will be removable, so accessing the PEV wouldn't be an issue
- Future proofing... Hopefully the boiler has years left in it, but if/when it goes we don't know what we'll go for next. Are PEVs useful in unvented and/or combi boiler set ups (when used with bath shower mixer taps)? I've read very opposing answers to that question!
- I presume performance will be similar in both set ups, so if there's likely to be a big price difference between the two then that might help decide.
I'll add a poll for the sake of it.
A vote, or a thought on any of the above, would be most welcomed.
Many thanks and have a great weekend everyone.
