[TRNSYS-users] problem with TYPE 20

[Enmisagh at aol.com]

dear all;
I want to model an air source heat pump water heater . Is it possible to  
use type 20 and deactivate water side ? Besides I had some problems with type 
20  . I do not know how to connect this component to other components? 
Could you  please elaborate on this component . I do not understand manual  
description ?
Best regards;  
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