can anyone review the attached and make any suggestions as to efficiency- Please?

Attachment 11141Attachment 11142Attachment 11141Attachment 11142

Sorry Cathyr,

But as far as I can see there is no data in your attachment that could help in the quest of calculating efficiency.

No running currents or power consumption.
No water flow rates or temperatures.
No refrigerant cycle data.


Sorry.

:cool:

Some points worth pointing out from the data sheets provided:
HI_A, range 10-20ºC but set at 45ºC?
Setpoint at LO_A (or LO_T depending on where one looks) - 20ºC???
Setpoint at HI_A - 30ºC??? (The colder it get outside the warmer you want the flow temp, these two set points are the wrong way around and at LO_A I would expect the set point to be towards the top end of the range, in your case 55ºC)
Setpoint upper limit 45ºC? If you got problem getting your house warm then this should be as high as possible (55ºC).

If your question is about getting higher duty from your heat pump then a good start would be :
HI_A - 15ºC
Setpoint at LO_A - 55ºC (To set this you also have to up the max set point to 55ºC)