Hi,
i finally model my system as an induction unit with a 4 pipe coil. As it
is not possible in the wizard I do it in the detailed edit. But even I
choose for the loop always the CHW / HW and not the 2 pipe option I
always see a 2 pipe coil on the screen. How can I activate the 4 pipe
coil ?
Thanks Verena
Verena,
If we?re looking at the same thing, I think the system schematic view might be hard-coded to say ?2-pipe coil?. Regardless, it should behave as a 4-pipe IU if you create separate HW and CHW loops and assign both to the IU. If you?re using v3.63, immediately below the 2-pipe label it shows separate heating and cooling coils as expected for a 4-pipe system. The two loops will operate independently to maintain space temperatures.
To verify, you can compare your set up to the example template for a 4-pipe system:
? Search for ?Four-Pipe? in Help
? Choose the search result ?SYSTEM Type = IU?
? On the right side of the window, scroll down to the bottom of the help content and you?ll see a link labeled ?Input template for a standard 2- and 4-pipe IU unit?.
You?ll note that a 2-pipe IU would require a single loop created specifically as TYPE = PIPE-2. The same loop would then be designated as the IU?s cooling and heating loop. It is my understanding that creating two separate heating and cooling loops, without specifying them as 2-PIPE, and assigning both to your IU makes it a 4-pipe.
Thanks,
DAKOTA KELLEY