Bathroom rads

rakesh5883

Hello all...
Radiator vs Towel Rads discussions have been done to death and clearly Rads win it !

We now have marble flooring in our bathroom (1.82 x 1.69 x 244(ht) and double glazing window 0.6m) . And from various calculators online it looks like the the radiator I need for this bathroom should be within 1200 - 1600.

The question I have is - If I install a radiator of 2200 BTUs , could the bathroom get unbearably hot !? moreover, this bathroom radiator is the dump radiator (as is the nearest to the Unvented cylinder) , so I cannot fit a TRV here, and hence cannot regulate the heat. What is the suggestion, should i go for this or should i stick within the recommended BTUs ?
What is the general suggestion, what should i install in here ??

Please help me

southcoastrgi

What boiler have you got ?
The unvented cylinder has nothing to do with it

rakesh5883

ideal classic ff 360

Alex1983

Swap a trv on a different radiator for a lock shield to act as the bypass radiator, hall would be a good option and fit a trv to your new bathroom radiator.

casper_g

My bathroom radiator never gets close to its rated output, because it always has three large damp bath towels folded over it!

Le_Kirk

TRV's should (always) be fitted in rooms that do not have the thermostat, therefore unless your bathroom has the thermostat for the central heating system you should be fine fitting a TRV to it.

Alex1983

If the bathroom doesn't have a trv and the system has no other bypass pipe then if you fit a trv to the bathroom you will need to remove a trv from a different radiator or get a system bypass installed.

southcoastrgi

A bypass requirement depends on whether the OP has an S or Y plan,

OP after the pump do you have 2 valves (square boxes) that's inline with the pipes or one valve (square box) that has three pipes going to it ?

Alex1983

It's likely that as they have unvented and the G3 regs requires a zone valve for the unvented that there system is a S plan and probably has the bypass pipework but I still would say it's good to have a radiator without a trv because there's a possibility, all be it small that your calling for heating and have all the trv's set low and the boiler could become noisy or overheat.

southcoastrgi

I'm bad I forgot the op had an unvented cylinder so yes Alex it should be an Splan & therefore will req an auto bypass as a bypass rad isn't enough

rakesh5883

Alex1983 wrote: »

It's likely that as they have unvented and the G3 regs requires a zone valve for the unvented that there system is a S plan and probably has the bypass pipework but I still would say it's good to have a radiator without a trv because there's a possibility, all be it small that your calling for heating and have all the trv's set low and the boiler could become noisy or overheat.

Hey, thanks for your reply. The bathroom ( in question. ) is in the first floor and there is no thermostat in the first floor , it is in the ground floor. We have 2 radiators, downstairs without TRVs , so I guess that would be used as the bypass radiator ? which means, i can fit a TRV in the bathroom without any problems ?