I have just moved house and the new one has a nice an shiny central heating system that has both pumped hot water and central heating. Seems that I have a valve that is an 'either' type which means that I either heat up the hot water or the radiators. Not both at the same time.
The tank has a lovely Danfoss thermostat fitted to it.
There is a header tank in the attic underneath the main cold water tank.
The time controller is a Danfoss SET5 and has been set up as a 7 day device. Underneath that there's a connector box that has more cables and connections than a BT exchange. It takes in a mains cable and provides a power feed to the SET5 controller. This in turn sends back wires to the connector box to turn on the heating and hot water. Out of the box I can see three more cables. One goes to the valve, another to the tank thermostat and the last one goes to the pump (yes you guessed it Danfoss!!!!).
The boiler is down in the utility room and just says BAXI on it (cos Danfoss probably don't do boilers!)
All in all, much improved over what I used to have.
The very first night we moved, I turned the system on and all went perfectly. It ran beautifully for two hours until both my wife and I decided that it had become too hot (the radiators please) and it needed turning down. First thing I noticed was that EVERY radiator had a TRV fitted (thought that you had to have at least one that was straight through?). Anyway, I adjusted the TRVs on all radiators down to an acceptable level for each room. I left the radiators in two bathrooms fully open just in case. All went well for half an hour until the system stared pounding as if pipes were being hit by a blacksmith with a lump hammer. Turns out that some of the TRV on the radiators were causing the noise problem. Sorted all but one of them out using a hammer and a pair of pliers on the pin.
Thanks for getting this far, here are my questions:
What else can I try on the TRV which is sticking?
My wife would like a room thermostat set up in the hall so that she can feel that she is in control of the heating (she's in total control of everything else . My local plummers merchants has sold me a Honeywell T6360B which I'd like to fit in the hallway. What cable should I 'break' to install this? Should it be the live/on out of the time controller for the Central Heating before it hits the connector box or should I only interupt the central heating live/on cable that goes to the valve?
How does the boiler know when to fire up? I can't see a cable anywhere? Does it have a flow switch?
I have bled the system but not balanced the radiators.
The tank has a lovely Danfoss thermostat fitted to it.
There is a header tank in the attic underneath the main cold water tank.
The time controller is a Danfoss SET5 and has been set up as a 7 day device. Underneath that there's a connector box that has more cables and connections than a BT exchange. It takes in a mains cable and provides a power feed to the SET5 controller. This in turn sends back wires to the connector box to turn on the heating and hot water. Out of the box I can see three more cables. One goes to the valve, another to the tank thermostat and the last one goes to the pump (yes you guessed it Danfoss!!!!).
The boiler is down in the utility room and just says BAXI on it (cos Danfoss probably don't do boilers!)
All in all, much improved over what I used to have.
The very first night we moved, I turned the system on and all went perfectly. It ran beautifully for two hours until both my wife and I decided that it had become too hot (the radiators please) and it needed turning down. First thing I noticed was that EVERY radiator had a TRV fitted (thought that you had to have at least one that was straight through?). Anyway, I adjusted the TRVs on all radiators down to an acceptable level for each room. I left the radiators in two bathrooms fully open just in case. All went well for half an hour until the system stared pounding as if pipes were being hit by a blacksmith with a lump hammer. Turns out that some of the TRV on the radiators were causing the noise problem. Sorted all but one of them out using a hammer and a pair of pliers on the pin.
Thanks for getting this far, here are my questions:
What else can I try on the TRV which is sticking?
My wife would like a room thermostat set up in the hall so that she can feel that she is in control of the heating (she's in total control of everything else . My local plummers merchants has sold me a Honeywell T6360B which I'd like to fit in the hallway. What cable should I 'break' to install this? Should it be the live/on out of the time controller for the Central Heating before it hits the connector box or should I only interupt the central heating live/on cable that goes to the valve?
How does the boiler know when to fire up? I can't see a cable anywhere? Does it have a flow switch?
I have bled the system but not balanced the radiators.