dkmc
Diamond
- Joined
- Jan 13, 2002
I searched and googled and no luck, so I'm posting here as it seems there are a few HVAC people here not to mention the just plain all 'round smart ones too.
Installed Jan 07 in the shop, a new Peerless Pinnacle modulating boiler. Stainless mostly, and designed to run
at low temps and in the condensing mode.
The local plumb/heat supply people where I got the unit have no clue. They say "Run it about 160-175"....which totally defeats the condensing phase and latent heat extraction at phase change.
If I'm saying that correctly. ...?
I've been playing around with the limit settings on inlet and outlet temperature. I can't find engineering guidelines anyplace for setting the limits. I've been moving them down, and right now it's at 133 +7 (shuts down the burner at 140) high side and 27deg differential.
"Seems" to be doing fine, haven't tried running the shop up to 65 (usually run at 60-62) to see if it will bring it up to that temp, which would be the highest I'd ever want to run at.
I suspect the limiting factor may be the ability to put enough BTU's into the largest loop (shop loop) at the coldest design temp. and achieve the desired room temperature. But I may be totally wrong......
Any theory or guidelines on this is much appreciated.
dan k
Installed Jan 07 in the shop, a new Peerless Pinnacle modulating boiler. Stainless mostly, and designed to run
at low temps and in the condensing mode.
The local plumb/heat supply people where I got the unit have no clue. They say "Run it about 160-175"....which totally defeats the condensing phase and latent heat extraction at phase change.
If I'm saying that correctly. ...?
I've been playing around with the limit settings on inlet and outlet temperature. I can't find engineering guidelines anyplace for setting the limits. I've been moving them down, and right now it's at 133 +7 (shuts down the burner at 140) high side and 27deg differential.
"Seems" to be doing fine, haven't tried running the shop up to 65 (usually run at 60-62) to see if it will bring it up to that temp, which would be the highest I'd ever want to run at.
I suspect the limiting factor may be the ability to put enough BTU's into the largest loop (shop loop) at the coldest design temp. and achieve the desired room temperature. But I may be totally wrong......
Any theory or guidelines on this is much appreciated.
dan k