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

 

[Gray0689]

Your electricity bill must be a good laugh

 

[alibryant69]

£20 quid a day for them

 

[Gray0689]

£20 quid a day for them

That's over £7000 a year are you mad

 

[unguided1]

are you sure youve got that right 300 amps equates to 69kw on a 15Kw heatpump. If so tell grant to remove it immediatley refund your money and give you some compensation for your electric bills

 

[Gray0689]

You got a big problem shut off the heat pump and just use the oil boiler till sorted

 

[quality]

Started current if DOL can cause the initial current inrush to be 6 - 8 time FLA you could reduce this with a soft start by about 50 %

 

[alibryant69]

thank you just for the record its not on my house but the customers i installed it in but thanks has anyone used these grant aronas before??

 

[Gray0689]

thank you just for the record its not on my house but the customers i installed it in but thanks has anyone used these grant aronas before??

You installed it there is no way that can be set up correctly

 

[quality]

May I why you chose grant

 

[Gray0689]

May I why you chose grant

Grant oil boilers are the best

 

[quality]

I was referring to the heat pump as to which grant are far from the best. but agree with you on the oil

 

[Gray0689]

I was referring to the heat pump as to which grant are far from the best. but agree with you on the oil

I know nothing about heat pumps and at a running cost of £7000 I don't want to either

 

[alibryant69]

it was comisioned by grant themselves and they said it was perfect??? and the customer choose them

 

[Gray0689]

it was comisioned by grant themselves and they said it was perfect??? and the customer choose them

Do you think it is perfect at £7000 a year running cost?????