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Grant Euroflame 70 - 90 too hot

  • 27-11-2010 11:36AM
    #1
    xabi
    Registered Users, Registered Users 2 Posts: 3,022 ✭✭✭


    Hi there,

    Recently had my oil boiler replaced with the above and am finding it heats the house too much. The thermostat on the boiler is set half way and the plumber has marked 75c at that point. If I turn down the thermostat do I risk it not working efficiently. The bedroom and living room have 2 rads in each, 9 in total.

    X


Comments

  • #2
    MicktheMan
    Registered Users, Registered Users 2 Posts: 2,952 ✭✭✭MicktheMan


    The stat on the boiler controls the temperature of the water pumped through your system and can be turned down if the house is too warm without effecting the boiler efficiency as the boiler will burn in the very same way regardless. Basically it is either on or off. However, to get the best out of your oil ch system, make sure your whole system is properly controlled, not just the boiler.

    How do you currently turn on and off your heating ... timeclock, room stat, both, other?
    If timeclock only then think about replacing it with a digital time and temperature controller. These units are not expensive and allow you to program your heating to suit your lifestyle etc and also control the amount of heat pumped through your system. It is always better to allow the boiler to be controled by a room thermostat than a timeclock alone.

    Hope this helps and hasn't confused the issue.


  • #3
    xabi
    Registered Users, Registered Users 2 Posts: 3,022 ✭✭✭xabi


    Thanks,

    I read that it doesn't work in condensing mode if the water going back to the boiler is more than 20c colder than the water going into the system


  • #4
    ntpm
    Closed Accounts Posts: 302 ✭✭ntpm


    xabi wrote: »
    Thanks,

    I read that it doesn't work in condensing mode if the water going back to the boiler is more than 20c colder than the water going into the system


    The boiler won't always work in condensing mode. Theoretical conditions are hard to maintain. This is down to system design, size of rads, boiler controls etc....

    +1 MICK THE MAN post.
    Ideally you should have a thermostat in the house to regulate the boiler comming on and off and a stat on the cylinder to ensure the hot water doesn't get too hot and also control the boiler.

    I would turn the stat at the boiler to ensure that you have a safe/ comfortable temperature on the rads. 65-70C should be ok.
    Hot water cylinder will still heat but the rads might take a little longer to warm the rooms.


  • #5
    xabi
    Registered Users, Registered Users 2 Posts: 3,022 ✭✭✭xabi


    The stat doesn't have temp markings except what the plumber marked - 75c half way on the stat. What's the max and min normally on the stats


  • #6
    ntpm
    Closed Accounts Posts: 302 ✭✭ntpm


    xabi wrote: »
    The stat doesn't have temp markings except what the plumber marked - 75c half way on the stat. What's the max and min normally on the stats


    Usually range between 60-85C.

    Most people at the moment are complaining that the heating isn't hot enough..... you are the exception.:D
    This time of year you might be glad of the extra heat. Just turn down stat to minimum and adjust it upwards. Eventually you will find a happy medium.

    FYI. As you only have 9 rads and hot water cylinder the boiler may be slightly oversized for your installation.
    It is possible to de-rate the boiler to it's minimum output. This could make the boiler work more efficiently and also reduce the oil comsumption.


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