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Hi All,
Have recently put in a wood-burning stove (with back-boiler) and a small thermal store (~300L). The stove heats the thermal store by thermo-syphon.
As the cold weather moves in, I have been using the stove for a greater proportion of the day and, later in the day, the store has been approaching 100C. The installer put a heatleak rad in, but I have to manually open this heatleak circuit using a normal rad valve. The rad is located within one metre of the cupboard holding the thermal store.
What I am looking for is a remote system, whereby, as the store reaches approx 99C, the rad valve will open automatically. Preferably, I would like this to be a passive system, so I'm not reliant on batteries or mains electricity, but will look at such options if there is nothing else. The closest I've come to finding anything is this Danfoss AVTA Thermostatically Operated Valve With Capillary Sensor (Link) However, there are a few problems with this - in descending order of importance: (a) The price! ~£60 (b) the sensor is too big for the pockets in my store (14.5 mm vs. 7mm - although there is a spare 22mm connection currently with blanking disk inserted, (c) its sensor range is only up to 95C so I lose ~5% of my store's potential, (d) I would like something that shows the temperature as the sensor will have to replace the current gauge in its pocket.
So, has anybody got any alternative solutions for me to consider? Any help would be much appreciated. Thanks.
Regards,
Harry.
Have recently put in a wood-burning stove (with back-boiler) and a small thermal store (~300L). The stove heats the thermal store by thermo-syphon.
As the cold weather moves in, I have been using the stove for a greater proportion of the day and, later in the day, the store has been approaching 100C. The installer put a heatleak rad in, but I have to manually open this heatleak circuit using a normal rad valve. The rad is located within one metre of the cupboard holding the thermal store.
What I am looking for is a remote system, whereby, as the store reaches approx 99C, the rad valve will open automatically. Preferably, I would like this to be a passive system, so I'm not reliant on batteries or mains electricity, but will look at such options if there is nothing else. The closest I've come to finding anything is this Danfoss AVTA Thermostatically Operated Valve With Capillary Sensor (Link) However, there are a few problems with this - in descending order of importance: (a) The price! ~£60 (b) the sensor is too big for the pockets in my store (14.5 mm vs. 7mm - although there is a spare 22mm connection currently with blanking disk inserted, (c) its sensor range is only up to 95C so I lose ~5% of my store's potential, (d) I would like something that shows the temperature as the sensor will have to replace the current gauge in its pocket.
So, has anybody got any alternative solutions for me to consider? Any help would be much appreciated. Thanks.
Regards,
Harry.
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