Chaps

we're looking at swapping out an old 10kw water chiller . Client suggests it's been wrong since installed and was told it was 'way oversized'. Our investigations suggest it's sized for the fan coils but not the 16a fuse rating.!

anyhoo there are 3 fan coils,

bedroom 1= 2kw
lounge =5kw
second bed 3.5kw

The chiller size would have been spec'ed by the architect or builder as a 100% matched load/demand .

BUT we size ac over here for expected load and on such a multi 10kw DX use a 7kw outdoor (2 x bedrooms OR lounge running). Never have a problem.

would the panel suggest or fit a downsize to 7kw chiller would be acceptable. Remember this isn't an office all on/off type environment so load differs according to time. Client said he never uses bed 2 in any case but I'm not counting on that . He doesn't rent so there isn't the usual holiday makers abuse happening either.

we can only fit a new outdoor chiller as the building is impossible to retro a complete new multi so that's a non starter.