Water heater for an Apollo heating system leaks through PRV

I had a new Hot water heater (High Efficientcy) installed in my house and it is also a part of my Apollo Heating System. It seems that everytime water is used in the house the PRV releases water. My question is do I
have the wrong type of water heater for the Apollo System or is the plumbing hooked up incorrectly? Bob
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.