which WB combi?

[bster]

My parents want a new boiler to replace there 25 year old heat only\tank fed system, They
are going for a combi in the loft, so it has to be a wall hung jobby.

Basically i advised them to get a 40kw Worcester, but whats the difference between the 40CDI and 40 HE+ models? (i think i read that one of them is not suitable for zoned heating - which i will need).

 

[sime10]

40 KW mansion is it?

 

[bster]

well it may not have to be 40kw but they want a good flow rate and the HE+ is around 16L/min, they were going for a Highflow 440 (20l/min) but were not to hot on the idea of the gas pipe running the entire length of the loft (its a large bungalow), They were also not impressed with my idea for a small combi and unvented cylinder, probably after my briefing, that went something like 'make sure that the installer has his Unvented ticket as the cylinder might blow the house up..'