GRANT Air Source Heat Pumps

[alibryant69]

hi i have just installed to 15kw grant ashps to a 16th century manor rebuild and a grant 26kw oil boiler to meet the demand for heat and water when the ashp's dont meet the demand, the whole systems set up correctly through a low loss header in the basement... but my problem is the air sources are drawing close to 300 amps when the start up, this spike happens at least 30 times a day and everyone else in the area has problems with their lights etc when this happens, the electric board are now threatening to cut the power to the house... when we went back to grant they didnt have a clued and kept fobbing us off with excuses like they have come out to look at it when they havent and they are making something to fix this??? which if they havent looked at the ashp's how can they know??? has anyone else out there had any similar problems?? many thanks alastair

 

[Electrician]

No I don't but there is not much to see from outside and would need rather a large memory card to photograph the entire installation it's a big place....

 

[quality]

On another note I evaluated a install in kidderminster. Long story short 30W per square meter was calculated for the heat output which would not have been too far wrong exept for 3.6m room height throughout the whole building plus a massive amount of glazing on the first floor and second floor and nearly half of the roof.
My report to the specifier was entertaining.

 

[Mr leaky]

sounds like you need soft start fitting my boss had one fitted at a cost of £250

 

[unguided1]

So any news on this installation, has Grant finally sorted it

 

[Mr leaky]

no news they were meant to have done it three weeks ago but nowt happened will ask and see whats going on with it. think in my earlyer post the price is wrong wasnt particularly listening was about 7pm on a friday :26:

can the air source be staggered somehow so they dont start at exactly the same time?