Conservatory rad size

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badabing04

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Hello all,

Im fitting a rad in a customers conservatory, dimensions 2.5 m x 3 m x 2.5 m

There is one full wall, one dwarf wall (so basically may as well be all glass) and one full glass wall. The roof is plastic/glass.

The customer has underfloor heating, but i'm not bothering to think they will ever use it so wanting to make sure I size the rad for worst case conditions.

The rad size calc i've got doesnt factor in that amount of glass in a conservatory so i'm scratching my head as to the best size rad to fit. Im leaning towards a 600 x 1200 k2.

Is that over/underkill??

I heard that the building regs state somewhere that conservatories cant have rads fed off the house circs..but if i put iso's on the flow and return does that bypass that reg? Its a retro fit.

Any advice gratefully appreciated
 
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What happens to the new rad once the house control shuts the system down?
The temp will drop faster than a whores drawers. The customer would have to increase the inside stat just to be able to use the conservatory.
If you have a suitable outside wall then why not consider a gas wall heater such as Baxi Brazilia. Just a thought.
 
Depending where your boiler is, you could connect the rad to the flow and return. This way it would heat up with the hot water on. Make sure you fit a TRV.

Andy
 
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Cant fit a gas heater due to fluing issues, boundry one side, decking the other. They really want a rad...and if I dont fit it then someone else will.

Will be fitting a frost stat in there so not worried about that, main concern is fitting a rad, them having heating on and then calling me after to say its not warm enough and they want a bigger rad fitting...at my expense.
 
Tell them it's a conservatory and not an extension. Then give them a price for the largest radiator possible and it's output. It's their choice if they want you to go ahead, also explain that there will be no come back to you.

Andy
 
hazetimesfive said:
rads have isolators anyway, and a trv, so that should be sufficient.
Click to expand...

Technically,the rads should be fed on its own circuit, and, I beleive, with it's own heat source - makig practically every connie rad an infringement. But who will know :mrgreen:

You MUST explain that the connoie will cool quicker than the house when the heating goes off. As said, fit the biggest you can, but make no guarantees - and get an agreement signed with the limitations
 
If I was planning the have a rad in my conny (and Im not) I would want it run back to the boiler on its own zone, with zone valve.

I can see the point, if you want to use it as an infrequent room once or twice a year. My gf's parents have a simular setup for there consevertory, which is basically unheated, had rads in it and is used for christmas day and such gatherings. it does however also have a proper solid flat roof which is insulated.


Daniel
 
Never cease to amaze me how people feel the need to heat their conservatories as if it was a main room in the house. Like someone said above it's not an extension but a conservatory
 
I have a 3m x 3.5m con with a glass roof (I assume less heat loss than plastic roof?). One full height wall, and full height glass on other two sides with a 1200x600 k2 rad, and it's not up to the job. It's plumbed back to the boiler on it's own zone via 2 port valve, and a programmable room stat.

When we want to use the room in cooler months, we still need to put on a 2.5kw convector heater to take the edge off. I don't think any sized rad will do the job properly. As other have said explain very carefully to the client the situation, and make sure they understand.
 
Make sure it's as big as it can be without looking odd - conservatories aren't designed to spend winter evenings in. Mine's a similar size, poly roof, and it stays warm enough with a 600 x 600 double as long as the heating is on in the house. I don't generally go in there for long in the winter and neither should they. If they're thinking of settling down for the night in front of a telly in there, they'll need to wrap up a bit. As long as they are aware of the drawbacks of heating a glass room, common sense should win through. Maybe... :LOL:
 
A rad in a cons should be on its own timer and statted circuit.

But a typical conservatory will lose about 0.5 kW per m² when its freezing outside.

Its a mad idea! Like those who want to heat up their gardens!

Even madder those plumbers who feed a con rad from a 15 mm connection from the nearest rad inside.

Tony
 
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