Boiler temp for radiator water

[diyjunky]

We have had a new system boiler (Glowworm R18) fitted in the property we rent out. The central heating temp is showing 75 degrees on the readout. The central heating system is probably about 20 or 30 years old. Does such a high temp put added pressure on the pipes, valves and joints ?
Would backing the temp down to 60 or 65 degrees reduce the pressure in a useful way ?

 

[cross thread]

No effect apart from gas usage

 

[diyjunky]

uses more gas but for a shorter time ?
or
uses more gas.

 

[BlueLoo]

uses more gas but for a shorter time ?
or
uses more gas.

If you are a renter, why aren't you asking your service and maintenance crew about this?

You do have a decent plumber on call i imagine?
Or are you one of those amateurs landlords who does nothing for the tenants and expects them to do everything?

 

[Madrab]

Would backing the temp down to 60 or 65 degrees reduce the pressure in a useful way

No

uses more gas.

The radiators can only release their heat at a specific rate, any hotter and the hotter water just heads back to the boiler and causes it to cycle which is inefficient, unless the installer balanced the system properly?

You can just drop the temp on the boiler a bit if you wish.

 

[Harry Bloomfield]

Set the boiler stat, to the minimum setting, where it is still able to heat the house adequately. That will achieve the greatest gas economy. On warmer days it can be set to a lower temperature, colder it needs to be higher.