A/C Load versus Heat Pump Load

[KWH]

The job I am currently on has 3 a/c's that were changed to heat pumps today. I am looking for some info on the amp draw for a heat pump in the heat mode. The min. circuit ampacity of 35amps is unchanged , what I am concerned about does the heat pump draw this full rating in the heat cycle. The load calc's were based on the a/c loads now they have added a 10kw unit heater which could be a problem if all these loads have to be figured @ the same time.

 

[bob]

you should see the compressor draw the same load whether it is cooling or heating. The 10 kw would be additional load.

 

[augie47]

Is it a package heat pump or a split system ? On most if the package heat pumps I see the nameplate shows the MCA/MOCP for the unit with no auxilary heat and the same info with various heat added.

 

[Dennis Alwon]

The job I am currently on has 3 a/c's that were changed to heat pumps today. I am looking for some info on the amp draw for a heat pump in the heat mode. The min. circuit ampacity of 35amps is unchanged , what I am concerned about does the heat pump draw this full rating in the heat cycle. The load calc's were based on the a/c loads now they have added a 10kw unit heater which could be a problem if all these loads have to be figured @ the same time.

The heat pump is the same compressor so it will draw the same. Basically the heat pump is the a/c compressor working in reverse. Oversimplification but...