r/Glasgow Tools

Title
Author	meepmeep13
Comment	That there is an old gas condensing boiler (that probably belongs in a museum) - while it provides both heating and hot water, it is not like a modern 'combi' boiler in that it doesn't provide hot water on demand, instead filling up that tank once or twice a day. You want to leave the boiler turned on all the time, set the thermostat to the tempature you want your flat to be at, and then adjust the drayton controller for it all to run at the hours you want. Easiest just to read the manual here: https://www.draytoncontrols.co.uk/sites/default/files/SM%202%20(I.%20Guide).pdf 1. No, the thermostat will turn off the boiler whenever the air temperature is above the thermostat setting 2. See that little box on the side of the tank? That's measuring the temperature of the water in the tank and goes back to the Drayton control unit. If you have the hot water set to 24/7 then whenever the water goes below a certain temperature it will be heated up again. Would recommend not doing this, you'll be paying a lot keeping water constantly heated - use the once or twice a day mode according to your usage, the insulation will keep it plenty warm. Press the 'advance' button if you want hot water on demand outside this schedule (e.g. half an hour ahead of when you want to run a big hot bath, or if you've used up all the hot water and want to do the dishes). 3. I might be wrong, but I'm pretty sure they're separate loops (they usually are, but this might be some weird old model) 4. Each radiator will usually have a valve on it on the inlet pipe that you can rotate to turn individual radiators on/off but you can't control the actual temperature of the water going into them. These valves often have numbers printed on them to give the impression you can, but all these do is restrict the flow rate which makes little difference. Basically the thermostat/control device is just sending heated water to all radiators round a loop whenever the thermostat measures the air temperature at its particular location is less than the value you have it set to.
Reddit Link	https://www.reddit.com/r/glasgow/comments/sir980/help_understanding_my_gas_heating_and_water_system/hvag5np/
Created	Wed 2nd Feb 2022 4:00pm
Status	normal ()

That there is an old gas condensing boiler (that probably belongs in a museum) - while it provides both heating and hot water, it is not like a modern 'combi' boiler in that it doesn't provide hot water on demand, instead filling up that tank once or twice a day.

You want to leave the boiler turned on all the time, set the thermostat to the tempature you want your flat to be at, and then adjust the drayton controller for it all to run at the hours you want. Easiest just to read the manual here:

https://www.draytoncontrols.co.uk/sites/default/files/SM%202%20(I.%20Guide).pdf

1. No, the thermostat will turn off the boiler whenever the air temperature is above the thermostat setting

2. See that little box on the side of the tank? That's measuring the temperature of the water in the tank and goes back to the Drayton control unit. If you have the hot water set to 24/7 then whenever the water goes below a certain temperature it will be heated up again. Would recommend not doing this, you'll be paying a lot keeping water constantly heated - use the once or twice a day mode according to your usage, the insulation will keep it plenty warm. Press the 'advance' button if you want hot water on demand outside this schedule (e.g. half an hour ahead of when you want to run a big hot bath, or if you've used up all the hot water and want to do the dishes).

3. I might be wrong, but I'm pretty sure they're separate loops (they usually are, but this might be some weird old model)

4. Each radiator will usually have a valve on it on the inlet pipe that you can rotate to turn individual radiators on/off but you can't control the actual temperature of the water going into them. These valves often have numbers printed on them to give the impression you can, but all these do is restrict the flow rate which makes little difference. Basically the thermostat/control device is just sending heated water to all radiators round a loop whenever the thermostat measures the air temperature at its particular location is less than the value you have it set to.