volmaakt

It was more the threaded bit going directly into the stove I was wondering about.

Ta. Is that a fancy (better?) version of Boss White?

Hello. Any recommendations for what to use for sealing the fittings (compression) going into the back of my boiler stove? PTFE? Stove silicone? Thanks

Thank you for all your help.

Thanks. I have a lid for the tank. Would the point on the right of the picture serve for this even if it is a couple of inches off the bottom of the tank assuming the water level would be kept above this? Should I just leave the other pipe in the tank be?

Yes, hadn’t quite thought that one though properly, thank you. So if I used the two existing points would I run the right hand side of the picture point down into the return to the stove and have the other pipe as a vent from the highest point of the feed? A concern is that this pipe is only 10mm, is this enough to vent if I ran 15 or 22 up to it This is a gravity system and just radiators.

I was planning on one circuit to go fore, top tapping for feed and bottom tapping for return and the same to go aft. There are four tappings at the back of the stove. The fore run is to have the header tank and the aft run to have a pipe venting outside, this will be off the feed and will vent higher than the header tank. I have tried to add a picture of the inside of my proposed header tank. If I have then the rest of my message may make sense if not then never mind. At the top left of the picture is an overflow pipe which I was planning on running into the return run back to the stove, bottom right of the picture is where I am planning to feed into the tank from the highest point of my feed from the stove, this is two inches from the bottom of the tank. I wanted to use these points because they are existing, welded fittings from my tanks previous life as a urn. I figured this was preferable to blanking them off and then having to cut new holes into the tank. Does this look feasible?

As soon as it is built I will post a picture. Looks great in my head though...

I am going to be having a split system. Planning on 28mm copper feed in both directions with 22mm returns in hep. 15mm up to header tank? I “found” a ”discarded” rectangular stainless steel urn at work which I have cut to size around which I am going to build a u shaped towel storage unit and it will have a nice heated stainless steel mirror in the middle. TD, you did suggest to get inventive.

Thanks. That is why I liked the look of them

It is for an open vented solid fuel system on my boat. I think most of my system will be in copper but some may be hep, are they compatible?

Hello. Has anyone used or heard of tectite push fit copper fittings being used for a central heating system? They have an upper limit of 114 degrees and the man on the phone said they were suitable for solid fuel systems. Thanks.

It is built into the stove. I suppose I had better get a move on with the radiators etc. then, starting to get a tad chilly up here in Scotland

I’ve got an old Demi-john, could add coloured water and watch it swirl while on the loo... Thanks for your help, I’m sure I will have more questions when I start. Oh, one more, might be stupid. Can you use a back boiler stove as just a stove before connecting all the pipe work etc.?

Just running radiators off the stove. Have an instant gas heater for water. My plan is for the expansion tank to be at the front end of the boat (bathroom). I had planned it to be after the two radiators on the fore run and fed into the return. This is the highest point on both the fore and aft run. Can the tank be in a room or should it be behind/under something? Was planning on using 28mm copper for the first 150 cm and then dropping down to 22mm hep.

Oh don’t I know it. But I have just been explaining to my 10 year old why we need an expansion tank including TD’s explanation of a steam flash explosion and he really wants me to buy something “proper” not make it myself... no faith at all. Does the tank need a feed down into the return or just from the feed? Any recommendations for radiators?

Thank you for your reply. What would be the best way to vent the other run, would it need another header tank? Most of the diagrams I have seen for open vented systems seem to show ,basically, a pipe hanging over an open bucket. Is there a proper component for this or is it something people fashion?

Hello. I have been reading through as many of the posts regarding back boiler heating systems as I can before I set up my system. I have a barge and my stove is In the centre. I need to run radiators fore and aft. I think I have managed to figure how to get this gravity fed but I have a few of questions. Is there a minimum height for the header tank above the rest of the system? Can an in-line pump be used to get the system circulating quicker and then switched off without impeding the system? Would the system work going in two directions from the back boiler? Is there any leeway on one of the returns travelling slightly uphill for the last couple of meters (I thought with the water circulating it might pull the colder water into the boiler)? This is a solid fuel system and only radiators. Thank you.

Have had one for a couple of years now. Only problem is they can get bunged up with tar and not turn with the wind and due to the design they funnel wind really effectively right down the chimney...

Thanks. Temperature is fine during the summer when we occasionally get one...

Hello. Just spent an hour trying to find an answer to my problem in the forums, no luck. Boat is in Scotland, during the winter when I manage to get my water tank filled the water is so cold my gas water heater cannot heat it much above luke warm. Is there a type of 12v heater which can be placed in my water tank to take the worst of the cold off before the water gets to the heater. Turns out pouring hot water from the kettle around the kids on bath night is frowned upon... Thanks.

Hello. Wondering if anyone can help. I am trying to find a system for using the canal water for my on the boat water; pump, filter ect. I will have a reverse osmosis system under my sink for drinking water but am looking for something to draw and filter the water from the canal for my general water (the water up here in the Scotish canals is really clean so I don't need a purification system). Don't know where to start looking, some sort of sand filter maybe? Thanks for any advice.