Search results

I am not heating engineer or a plumber but i do look into this forum often. May I suggest that if the pump is quite powerful and does suck a lot but the water in the F&E may not be enough and it empties fast enough. As the F&E tank may not filling that fast and air could be sucked in...

The main supply to the timer, valves, pump and boiler comes from the same source after the fused switch. Only supply for the timer is taken to the timer with a separate cable and to the terminal block serparately. The fused switch does switch off every thing if required.

I have now convert my open vent heating system to 2 x 2port (S-Plan) system and have also added the 22 mm vent pipe that loop back into the Expansion tank. The loop height is 450 mm above the level of the water in the tank. The vent pipe just end about 120 mm above the level as...

The present size of the radiator is about 450mm x 600 mm. I like to install a 450 mm x 1200 mm. my whole house has micro bore pipe based heating and my other rooms have 450 mm x 1200 mm radiators as well. The 8 mm pipe comes out of 22 mm feeder after the 2 port valve. Please advise.

I have to replace a radiator with a larger size. I have micro bore 8 mm pipes and want to connect to the radiator valves with internal reducer 15 mm to 8 mm. I have bought the kit which is 3 pieces. It seem ok where the 8 mm olive goes but the packet does not explain which side goes into...

This was a "Y-Plan" system before with the mid-position valve. I had a lot of problems and I converted to "S-Plan" about couple of years ago. Since then it has been performing very well. It is too late to contact the heating engineer now after 6 years. I have to think of cabling the...

At my home heating system, the pump signal is picked up from the same point as boiler. That means the pump is switched off at the same time the boiler is switched off. The boiler was installed by an heating engineer about 6 years ago. It is not connected to "over run signal from the...

Dave thanks for your helpful answer. It does enhance my knowledge and help me to decide what to do in my present project.

If I have 2 x 2 port valves, means one for heating and other for hot water, must I have a by pass valve? otherwise when both heating and hot water valves as shut, there will not be any path for the water to flow. This pumped water then should flow through the by pass valve that should be open...

As you mentioned thorn appolo 15/30si that reminds me the boiler that was replaced was indeed thorn appolo 15/30 si. This also vindicates the reason that there was no vent pipe. But as now I have got vaillant and the manual mention a vent pipe: Should I put one or leave it as it is? This...

I have an Automatic By Pass valve model SBV22 by SUNVIC. I am trying to find a simple way to calibrate setting so that it opens when two ports valves in s-plan systems are shut (no heating or hot water) and minimum flow when any of the heating or hot water is on. The method described is...

Yes this is an Ecomax Pro

The instruction manual says it is " Wall hung condensing boilers for traditional open vented systems" and it 18E or 28E VAILLANT

22 mm hot water pipe comes from the boiler and is teed up for the cold feed with 22mm pipe. The there is a Pump and it is further teed up with 15 mm for by-pass which it seems an isolator connected to Return. The hot water has mid-position valve. One side goes to immersion tank and this has...

22 mm hot water pipe comes from the boiler and is teed up for the cold feed with 22mm pipe. The there is a Pump and it is further teed up with 15 mm for by-pass which it seems an isolator connected to Return. The hot water has mid-position valve. One side goes to immersion tank and this has...

22 mm hot water pipe comes from the boiler and is teed up for the cold feed with 22mm pipe. The there is a Pump and it is further teed up with 15 mm for by-pass which it seems an isolator connected to Return. The hot water has mid-position valve. One side goes to immersion tank and this has...

I have Open vent central heating system with mid-position valve for heating and hot water. The cold feed comes from the expansion tank in a 22 mm pipe but there is no VENT pipe for any expansion of water. I wonder whether I do have to have this pipe? I asked the plumber who installed our...