I know these are simple controlers, but I can't for the life of me get it to switch on the central heating without switching on the hot water . How do I run the heating only? Feel free to make me look foolish! Many thanks in advance.
siemens RWB2E controler
- Thread starter howardik
- Start date
- Joined
- 19 Jul 2007
- Messages
- 5,950
- Reaction score
- 1,144
- Country
If you have a gravity H/W circuit ,Then you can't.
There is a selector on the reverse of the programmer if you have fully pumped system.
There is a selector on the reverse of the programmer if you have fully pumped system.
what type of system do you have ?
it maybe a gravity hw pumped heating system.
it maybe a gravity hw pumped heating system.
This presuposes I have some technical knowledge about heating systems. not so, I have no idea about gravity or fully pumped. sorry, but thanks for trying.
Then we will tell you and show you how you can find out.
Gravity circulation relies on the fact that hot water is lighter than cold water. So the hot water will naturally rise up the pipe from the boiler to the Hot water cylinder. It travels through a coil in the cylinder and heats up the water in the cylinder. As a result the water in the coil cools down and consequently drops down the return pipe back to the boiler.
Pumped circulation is as the name suggests.
Have a look around your boiler and hot water cylinder and see if you have something like any of these. If you do you have fully pumped system
View media item 5946 View media item 11762 View media item 10596
Another way of checking is to count the number of water pipes connected to the boiler. A pumped system will have two; a gravity will have three or four.
Thankyou, I will have a looksee!
OK
P.S. You should have pressed the Post Reply button (below the bottom post on each page). Only use the Quote button if you need to quote from a post.
If you quote too much, the Mods will tell you off.
Hello! could you help me out please? I have all of the pictures on my boiler and I have exact same dial as described in the original post but the heating won't start. The problem that it doesn't start on its own and it won't start with the hot water. It's freezing, can someone help? Is there anything I can do? Many thanks.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
Similar threads
