I have a couple of queries, regarding my current setup and a couple of changes I would like/need to make, on which I'd like some advice please .
I have a Vokera Mynute 14e gas boiler for hw & ch. The boiler flow goes to the cylinder and has two ch zones (upstairs & downstairs) branching off it in the form of t-joint, each with a Myson motorised valve (each controlled by a dedicated room thermostat), feeding into a manifold and on to the radiators. The return from the cylinder similarly has two t-joints which connect to the return manifolds from the radiators.
Currently the filler loop for the heating is taken from the pipe coming from the attic tank to the cylinder (incorporating a control valve operated by a screwdriver and a non-return valve).
This has caused problems for me as yesterday the system stopped working due to low pressure. I checked and figured out the pressure vessel also needed recharging so I drained off some water, leaving the system open and sorted out the pressure vessel. Afterwards I set about refilling the system and struggled to get the pressure high enough.
1. Should the filler loop be a mains feed rather than coming off the cylinder fill pipe from the attic tank? I suspect so as there doesn't seem to be enough pressure with the current setup to properly pressurise the heating. I temporarily disconnected the feed to the tank in the attic and connected this to the filler loop in order to get the system pressurised for now but I am thinking of taking a branch off the tank feed down into the hotpress to facilitate future heating system top ups. Is this a good idea?
2. The Vokera's pressure relief valve has the standard preformed pipe section on it and nothing else. I need to run this through the wall to outside in case of any problems as otherwise the place will just flood! Can I join directly onto the standard pipe or should I look at replacing the lot from the valve out?
3. The time clock on the Vokera is the standard 24hr type and I'm looking to change this for something that will allow 5+2 or 7 day operation. Is it easy to bypass the Vokera timer and use an external one?
4. I also need to change the thermostats controlling my ch zone valves as recently they've started acting up - one needs to be all the way up to switch the valve on and the other doesn't switch off once the temperature reaches the correct level and has to be manually switched off. Seeing as I'm looking at changing the system timer and thermostats should I consider a different way of managing the heating system? Is there a better way?
I know there's a lot there but I hope some users will be willing to help me out with some bits.
I have a Vokera Mynute 14e gas boiler for hw & ch. The boiler flow goes to the cylinder and has two ch zones (upstairs & downstairs) branching off it in the form of t-joint, each with a Myson motorised valve (each controlled by a dedicated room thermostat), feeding into a manifold and on to the radiators. The return from the cylinder similarly has two t-joints which connect to the return manifolds from the radiators.
Currently the filler loop for the heating is taken from the pipe coming from the attic tank to the cylinder (incorporating a control valve operated by a screwdriver and a non-return valve).
This has caused problems for me as yesterday the system stopped working due to low pressure. I checked and figured out the pressure vessel also needed recharging so I drained off some water, leaving the system open and sorted out the pressure vessel. Afterwards I set about refilling the system and struggled to get the pressure high enough.
1. Should the filler loop be a mains feed rather than coming off the cylinder fill pipe from the attic tank? I suspect so as there doesn't seem to be enough pressure with the current setup to properly pressurise the heating. I temporarily disconnected the feed to the tank in the attic and connected this to the filler loop in order to get the system pressurised for now but I am thinking of taking a branch off the tank feed down into the hotpress to facilitate future heating system top ups. Is this a good idea?
2. The Vokera's pressure relief valve has the standard preformed pipe section on it and nothing else. I need to run this through the wall to outside in case of any problems as otherwise the place will just flood! Can I join directly onto the standard pipe or should I look at replacing the lot from the valve out?
3. The time clock on the Vokera is the standard 24hr type and I'm looking to change this for something that will allow 5+2 or 7 day operation. Is it easy to bypass the Vokera timer and use an external one?
4. I also need to change the thermostats controlling my ch zone valves as recently they've started acting up - one needs to be all the way up to switch the valve on and the other doesn't switch off once the temperature reaches the correct level and has to be manually switched off. Seeing as I'm looking at changing the system timer and thermostats should I consider a different way of managing the heating system? Is there a better way?
I know there's a lot there but I hope some users will be willing to help me out with some bits.