- Joined
- 7 Sep 2015
- Messages
- 2
- Reaction score
- 0
- Country
New installation issues - no CH cut off when room stat satisfied and separate issue of sound of sloshing.
Hi all
I'm having two separate issues with an installation of a new Worcester boiler. I am in contact with the installer but I am being given the run around.
I have two issues:
1. When the CH is set to on on the programmer and the room thermostat is satisfied the CH continues to run. The only way to stop it is to switch both the CH and HW off at the programmer. The single three way valve is operating correctly up to this point (in that on HW only the HW position is set, when there is both demand for HW and CH is set to middle and when the tank stat is satisfied the valve goes to the CH position).
The installer spent ages trying to work out what was wrong and for now I have been left with a system that doesn't work fully and his only answer is to retiring my whole system. The system that was in place before was old but compliant and follows the principles of a 'Y plan' conventional system. The old appollo boiler was basic in its controller but had three functions - OFF, HW only and HW and CH. the components are:
The new Worcester RI boiler
A room thermostat (which is acting as a switch)
A water tank thermostat (which is acting as a switch but with three wires to it (common, demand and satisfied)
A three way (Honeywell type) valve
A water pump
A standard Drayton programmer/timer which is acting as a switch for the CH and HW
Admittedly the wiring does look like a snakes wedding but it's all junctioned up in the airing cupboard and next to the boiler.
It was all working fine before the installation so I am just thinking the new system is wired up wrong.
Anyone got any ideas that may have been overlooked.
2. Issue is there is a sound of sloshing from what I refer to as the primary HW circuit (when the Three way valve is set to HW, hot water is passing through the boiler, through the pump, through the three way valve, through the coil in the hot water tank and back around. It sounds like there is air in their big time, it sounds like the water is being poured rather than pumped through the system. When I force the CH to come in the three way valve switches to middle position and then then sloshing stops... As soon as i force it back to HW the sloshing is back almost imeadiatly.
On issue 2 I can't be sure that it wasn't doing it before on the old boiler but the new one is so quiet I can hear it more now.
I've bled the radiators and there is no excess air.
I can't easily bleed the boiler circuit although if someone recommends me to I will give it ago.
The system should be self venting. I've checked the expansion tank and there is water in it plus they used this part of the system to refill the system after the install.
One thing I did think of is that it isn't venting properly - there is a large valve looking thing that connects what looks like the flow and return, it's hexagonal and has what looks like a hole in the middles of it.. What's that?
Any thoughts on the above would be appreciated and if relations with the installer continue to deteriorate I am gonna need someone to come and sort it out.
Thanks.
P
Hi all
I'm having two separate issues with an installation of a new Worcester boiler. I am in contact with the installer but I am being given the run around.
I have two issues:
1. When the CH is set to on on the programmer and the room thermostat is satisfied the CH continues to run. The only way to stop it is to switch both the CH and HW off at the programmer. The single three way valve is operating correctly up to this point (in that on HW only the HW position is set, when there is both demand for HW and CH is set to middle and when the tank stat is satisfied the valve goes to the CH position).
The installer spent ages trying to work out what was wrong and for now I have been left with a system that doesn't work fully and his only answer is to retiring my whole system. The system that was in place before was old but compliant and follows the principles of a 'Y plan' conventional system. The old appollo boiler was basic in its controller but had three functions - OFF, HW only and HW and CH. the components are:
The new Worcester RI boiler
A room thermostat (which is acting as a switch)
A water tank thermostat (which is acting as a switch but with three wires to it (common, demand and satisfied)
A three way (Honeywell type) valve
A water pump
A standard Drayton programmer/timer which is acting as a switch for the CH and HW
Admittedly the wiring does look like a snakes wedding but it's all junctioned up in the airing cupboard and next to the boiler.
It was all working fine before the installation so I am just thinking the new system is wired up wrong.
Anyone got any ideas that may have been overlooked.
2. Issue is there is a sound of sloshing from what I refer to as the primary HW circuit (when the Three way valve is set to HW, hot water is passing through the boiler, through the pump, through the three way valve, through the coil in the hot water tank and back around. It sounds like there is air in their big time, it sounds like the water is being poured rather than pumped through the system. When I force the CH to come in the three way valve switches to middle position and then then sloshing stops... As soon as i force it back to HW the sloshing is back almost imeadiatly.
On issue 2 I can't be sure that it wasn't doing it before on the old boiler but the new one is so quiet I can hear it more now.
I've bled the radiators and there is no excess air.
I can't easily bleed the boiler circuit although if someone recommends me to I will give it ago.
The system should be self venting. I've checked the expansion tank and there is water in it plus they used this part of the system to refill the system after the install.
One thing I did think of is that it isn't venting properly - there is a large valve looking thing that connects what looks like the flow and return, it's hexagonal and has what looks like a hole in the middles of it.. What's that?
Any thoughts on the above would be appreciated and if relations with the installer continue to deteriorate I am gonna need someone to come and sort it out.
Thanks.
P
