Forzen Coil
Forzen Coil
(OP)
On our plant, we have a bay with an air handler plus unit heaters. This past winter the coil on the air handler froze. The reason is because it's modulated steam going into the coil with the main condensate return being 42" above the return on the coil. Because of this situation, there is not enough steam pressure to lift the condensate. This causes the condensate to flood the coil then freeze.
One option was to raise the air handler so the condensate gravity flows into the main condensate return. I can't do that because of the height issues.
Here's my question I was wondering if I installed an orifice union around the modulating valve and replace the F&T trap with an inverted bucket trap if this would provide enough lift to prevent the flood coil. My other thought was to install an automatic pump trap to lift the condensate or an Armstrong Posi-Pressure System. Has anyone installed an Armstrong Posi-Pressure Systems before? Any thoughts or comments would be appreciated.
One option was to raise the air handler so the condensate gravity flows into the main condensate return. I can't do that because of the height issues.
Here's my question I was wondering if I installed an orifice union around the modulating valve and replace the F&T trap with an inverted bucket trap if this would provide enough lift to prevent the flood coil. My other thought was to install an automatic pump trap to lift the condensate or an Armstrong Posi-Pressure System. Has anyone installed an Armstrong Posi-Pressure Systems before? Any thoughts or comments would be appreciated.





RE: Forzen Coil
Click on "single step lift"
This fitting is good for a maximum of 5 feet
RE: Forzen Coil
RE: Forzen Coil
If a drain is not available, a second option would be to use a product that acts as a standard F&T trap when differential is present and acts as a steam motive pump in the absence of differential. Sarco is the only manufacturer that comes to mind. This would be found on their website and is marketed as the APT series trap.
I hope this information helps!
Danny Morrison, Owner
Industrial Products Group, LLC