second floor boiler?

[essgee]

Hello all,
I am renovating a house and redoing pretty much all the plumbing. The CH system is being done from scratch. I have bought the ATAG 325ec boiler after recommendations on here and elsewhere, the question is where to locate it;

The tidiest location for it is on the second floor landing, but I'm struggling to find information on locating one on a second floor. So sorry if this is an ignorant question but can the hot water flow go down and the return come up the house, or would it mean I had trouble keeping the lower floors warm?

Any information or experience people have would be appreciated. Thanks.

 

[cross thread]

as its pumped round the rads it can go up or down .ifs the pipe size and design that matters

 

[essgee]

Thanks for that I just wondered if the movement of heat in the water, even when being pumped, would mean that the cold would always gravitate down. I did 2 science A levels as well, oh dear!

I have worked out the BTU calcs for each room and sized radiators accordingly. As I'm laying pipework from scratch I've kept the layout simple with a concise 22mm 'ring' to each floor and then short 15mm branches off to each rad.

I have designed in a 400x100 'conduit' that runs from the ground floor to the second floor and hopefully I can fit all the pipework in that, ( and electrics in the opposite corner away from the hot water pipes).

The building inspector is over this morning so I'll check he doesn't have a problem with the location and then a decision is made!

Many thanks.

 

[essgee]

I learn a lot from just reading through other people's threads on here, so I thought I'd post an update just in case someone is interested.

The building inspector came today and said there is no problem having the boiler in the hallway, but because it is a protected stairwell the boiler needs to be separated from the hallway in a cupboard or similar which has 30minute fire rating.

I thought he would ask for 30min fire protection but I have to admit I still find it bizarre that if there is a fire risk from a sealed system boiler that it is better to have it in a bedroom than in a hall. (A sealed system combi boiler doesn't require protection in a bedroom but does in a hall).