Re: Myson Kick Space Heater

Discussion in 'UK DIY' started by John, Feb 17, 2009.

  1. John

    John Guest

    "Franko" <> wrote in message
    news:...
    > "TheScullster" <> wrote in message
    > news:...
    >> Hi all
    >>
    >> More Qs on the kitchen refurb project for anyone using kick space
    >> heater(s).
    >>
    >> ISTR previous posts (long ago) complaining about the inaccuracy of the
    >> stated output figures for kick space heaters.
    >> I have a single storey extension for a kitchen (5m x 3.6m x 2.4m ceiling
    >> height) and anticipate needing 2.3Kw heating capacity for cold start up.
    >> Cavity walls (3 external) with some polystyrene cavity insulation and
    >> pitched roof which will be insulated to 300mm.
    >>
    >> The largest heater is the 800 model which (in normal mode) is a little
    >> light on this figure.
    >> Does anyone have experience of these to advise please?
    >> Should I be looking at 2 smaller heaters to achieve the heat requirement
    >> and spread the heat? I am reluctant to do this due to cost and also as I
    >> have a pre-routed 15mm supply - not sure if that will serve 2 heaters.
    >> Another Q is regarding noise - is this an issue, or are they reasonably
    >> quiet in operation?
    >> Finally, do they have built in stats for fan control, and if so, how
    >> would they go on with 2 units in the same room?
    >> Any other gotchas relating to these heaters?
    >>
    >> TIA
    >>
    >> Phil

    > I fitted one (the 500 model) roughly ten years ago and it has worked
    > faultlessly until last year when it just refused to work. Normally the fan
    > thermostat only kicks in once the central heating is up to a reasonable
    > warmth.
    > I don't see why you could not fit an external stat to the supply cable if
    > you so wanted.
    >
    > I had the false cupboard base out last week and noticed that the flow pipe
    > was hot but the return was only lukewarm so probably an air lock somewhere
    > in the return pipe which is going to be a bugger to get to (carpets &
    > floorboards up) - grrrrrr.
    >
    > My kitchen is roughly 5.5m x 4m and I notice the difference in temperature
    > now it's not working, even with the heat coming through from the rest of
    > the house so now that it's not working I realise that it was efficient for
    > the space at the time.
    >
    > I have just bought an electric only model from Ebay, new, for £20 so may
    > try that in it's place.
    >
    > Franko.
    >
    >


    Aren't you rushing into an assumption about an air lock?.

    What about - partly blocked heater matrix in the Myson? Lockshield needs
    opening up a bit?. Pipe needs flushing?

    I would be inclined to try and link the flow and return with a piece of
    pipe, remove the Myson and flush it- and run the heating through the pipe to
    see if it flows properly. Why should it be an air lock?
    John, Feb 17, 2009
    #1
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  2. John

    Franko Guest

    "John" <> wrote in message
    news:n3Dml.5298$2...
    >
    > "Franko" <> wrote in message
    > news:...
    >> "TheScullster" <> wrote in message
    >> news:...
    >>> Hi all
    >>>
    >>> More Qs on the kitchen refurb project for anyone using kick space
    >>> heater(s).
    >>>
    >>> ISTR previous posts (long ago) complaining about the inaccuracy of the
    >>> stated output figures for kick space heaters.
    >>> I have a single storey extension for a kitchen (5m x 3.6m x 2.4m ceiling
    >>> height) and anticipate needing 2.3Kw heating capacity for cold start up.
    >>> Cavity walls (3 external) with some polystyrene cavity insulation and
    >>> pitched roof which will be insulated to 300mm.
    >>>
    >>> The largest heater is the 800 model which (in normal mode) is a little
    >>> light on this figure.
    >>> Does anyone have experience of these to advise please?
    >>> Should I be looking at 2 smaller heaters to achieve the heat requirement
    >>> and spread the heat? I am reluctant to do this due to cost and also as
    >>> I have a pre-routed 15mm supply - not sure if that will serve 2 heaters.
    >>> Another Q is regarding noise - is this an issue, or are they reasonably
    >>> quiet in operation?
    >>> Finally, do they have built in stats for fan control, and if so, how
    >>> would they go on with 2 units in the same room?
    >>> Any other gotchas relating to these heaters?
    >>>
    >>> TIA
    >>>
    >>> Phil

    >> I fitted one (the 500 model) roughly ten years ago and it has worked
    >> faultlessly until last year when it just refused to work. Normally the
    >> fan thermostat only kicks in once the central heating is up to a
    >> reasonable warmth.
    >> I don't see why you could not fit an external stat to the supply cable if
    >> you so wanted.
    >>
    >> I had the false cupboard base out last week and noticed that the flow
    >> pipe was hot but the return was only lukewarm so probably an air lock
    >> somewhere in the return pipe which is going to be a bugger to get to
    >> (carpets & floorboards up) - grrrrrr.
    >>
    >> My kitchen is roughly 5.5m x 4m and I notice the difference in
    >> temperature now it's not working, even with the heat coming through from
    >> the rest of the house so now that it's not working I realise that it was
    >> efficient for the space at the time.
    >>
    >> I have just bought an electric only model from Ebay, new, for £20 so may
    >> try that in it's place.
    >>
    >> Franko.
    >>
    >>

    >
    > Aren't you rushing into an assumption about an air lock?.
    >
    > What about - partly blocked heater matrix in the Myson? Lockshield needs
    > opening up a bit?. Pipe needs flushing?
    >
    > I would be inclined to try and link the flow and return with a piece of
    > pipe, remove the Myson and flush it- and run the heating through the pipe
    > to see if it flows properly. Why should it be an air lock?

    Thanks John, I'll try that at the weekend and it could well save me the
    hassle of fitting another.
    ps: Note to the Scullster, I screwed mine to a couple of short pieces of
    melamime to raise it by 20mm or so as it made it easier to cut the slot in
    the plinth without a slim sliver that would probably snap when refitting the
    plinth. It is not fixed to the floor but when you screw the faceplate/grill
    on it holds it in place well.

    The noise from the unit is unobtrusive in slow speed but quite noticeable in
    high speed.

    The other thing I have found is the fan only option for summer use is a
    waste of time for me but it may be of some benefit in a smaller room.

    Franko.
    Franko, Feb 17, 2009
    #2
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  3. John

    John Guest


    >>
    >> Aren't you rushing into an assumption about an air lock?.
    >>
    >> What about - partly blocked heater matrix in the Myson? Lockshield needs
    >> opening up a bit?. Pipe needs flushing?
    >>
    >> I would be inclined to try and link the flow and return with a piece of
    >> pipe, remove the Myson and flush it- and run the heating through the pipe
    >> to see if it flows properly. Why should it be an air lock?

    > Thanks John, I'll try that at the weekend and it could well save me the
    > hassle of fitting another.
    > ps: Note to the Scullster, I screwed mine to a couple of short pieces of
    > melamime to raise it by 20mm or so as it made it easier to cut the slot in
    > the plinth without a slim sliver that would probably snap when refitting
    > the plinth. It is not fixed to the floor but when you screw the
    > faceplate/grill on it holds it in place well.
    >
    > The noise from the unit is unobtrusive in slow speed but quite noticeable
    > in high speed.
    >
    > The other thing I have found is the fan only option for summer use is a
    > waste of time for me but it may be of some benefit in a smaller room.
    >
    > Franko.
    >


    I guess the Myson is the lowest point in the heating system - therefore
    scope for heavy gunge to settle.

    My thoughts include: Remove - flush. Drain gunge from pipes. Add Fernox.
    Balance system
    John, Feb 17, 2009
    #3
  4. John

    Franko Guest

    "Franko" <> wrote in message
    news:lNEml.721$2...
    >
    > "John" <> wrote in message
    > news:n3Dml.5298$2...
    >>
    >> "Franko" <> wrote in message
    >> news:...
    >>> "TheScullster" <> wrote in message
    >>> news:...
    >>>> Hi all
    >>>>
    >>>> More Qs on the kitchen refurb project for anyone using kick space
    >>>> heater(s).
    >>>>
    >>>> ISTR previous posts (long ago) complaining about the inaccuracy of the
    >>>> stated output figures for kick space heaters.
    >>>> I have a single storey extension for a kitchen (5m x 3.6m x 2.4m
    >>>> ceiling height) and anticipate needing 2.3Kw heating capacity for cold
    >>>> start up.
    >>>> Cavity walls (3 external) with some polystyrene cavity insulation and
    >>>> pitched roof which will be insulated to 300mm.
    >>>>
    >>>> The largest heater is the 800 model which (in normal mode) is a little
    >>>> light on this figure.
    >>>> Does anyone have experience of these to advise please?
    >>>> Should I be looking at 2 smaller heaters to achieve the heat
    >>>> requirement and spread the heat? I am reluctant to do this due to cost
    >>>> and also as I have a pre-routed 15mm supply - not sure if that will
    >>>> serve 2 heaters.
    >>>> Another Q is regarding noise - is this an issue, or are they reasonably
    >>>> quiet in operation?
    >>>> Finally, do they have built in stats for fan control, and if so, how
    >>>> would they go on with 2 units in the same room?
    >>>> Any other gotchas relating to these heaters?
    >>>>
    >>>> TIA
    >>>>
    >>>> Phil
    >>> I fitted one (the 500 model) roughly ten years ago and it has worked
    >>> faultlessly until last year when it just refused to work. Normally the
    >>> fan thermostat only kicks in once the central heating is up to a
    >>> reasonable warmth.
    >>> I don't see why you could not fit an external stat to the supply cable
    >>> if you so wanted.
    >>>
    >>> I had the false cupboard base out last week and noticed that the flow
    >>> pipe was hot but the return was only lukewarm so probably an air lock
    >>> somewhere in the return pipe which is going to be a bugger to get to
    >>> (carpets & floorboards up) - grrrrrr.
    >>>
    >>> My kitchen is roughly 5.5m x 4m and I notice the difference in
    >>> temperature now it's not working, even with the heat coming through from
    >>> the rest of the house so now that it's not working I realise that it was
    >>> efficient for the space at the time.
    >>>
    >>> I have just bought an electric only model from Ebay, new, for £20 so may
    >>> try that in it's place.
    >>>
    >>> Franko.
    >>>
    >>>

    >>
    >> Aren't you rushing into an assumption about an air lock?.
    >>
    >> What about - partly blocked heater matrix in the Myson? Lockshield needs
    >> opening up a bit?. Pipe needs flushing?
    >>
    >> I would be inclined to try and link the flow and return with a piece of
    >> pipe, remove the Myson and flush it- and run the heating through the pipe
    >> to see if it flows properly. Why should it be an air lock?

    > Thanks John, I'll try that at the weekend and it could well save me the
    > hassle of fitting another.
    > ps: Note to the Scullster, I screwed mine to a couple of short pieces of
    > melamime to raise it by 20mm or so as it made it easier to cut the slot in
    > the plinth without a slim sliver that would probably snap when refitting
    > the plinth. It is not fixed to the floor but when you screw the
    > faceplate/grill on it holds it in place well.
    >
    > The noise from the unit is unobtrusive in slow speed but quite noticeable
    > in high speed.
    >
    > The other thing I have found is the fan only option for summer use is a
    > waste of time for me but it may be of some benefit in a smaller room.
    >
    > Franko.
    >

    Had a bit of a bonus this morning, my winning Ebay bid of £20 for an
    electric model 500 turned out to be the hydronic model, exactly the same as
    my last model so will be fitting that this weekend and cleaning out the old
    one for use as a spare.
    Well chuffed !
    Franko.
    Franko, Feb 18, 2009
    #4
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