Installing the HTP-UTF 80 soon so I have some questions. Manual J load comes in at 35.8 kBtu/hr.
There are 11 loops in the concrete 4" slab on grade over Ampex panels. All loops are 260 - 290 feet.
I want to add 2 more loops to heat the bonus room above the garage that will have to over come a delta of just 20 degrees because the garage will be heated to 50 degrees. I will use aluminum reflector panels to radiate the heat into the floor/air space/ insulation.
So....... 13 loops. Zones will be 4 loops, 5 loops, 2 loops garage, and 2 loops bonus room (diff emitter).
I want to use Primary circuit with a Grundfos Alpha2.
Can I set up the bonus room on a separate thermostat that opens the zone loops up but does not fire the boiler. Then, when any of the other zones turns on, that room will get heat as well.
Trying to avoid short cycling from that zone.
Also, because of 13 loops (cannot find a manifold) unless I want to spend big bucks, I bought a 6 zone and a 7 zone that I want to use and pipe like the attached pic.
4 loops and 2 loops on a manifold. 5 loops and 2 loops on the 2nd manifold.
Anything wrong with current plan?