7184u honeywell

tommyoil

Can someone explain to me what the difference is(performance wise) in the various motor off delay timings on this control? And what would be the advantage of longer,say 4 min. as opposed to a 2 min. setting on the dip switches. I have been setting them at 2 min when I use them. Should I be? Are they there for different applications? I'm not sure I'm doing the right thing here. I love this control.

Firedragon_4

I would say that 2 minutes is more than adequate

with a chimney or direct vent, less chamber. You should increase it if you have a chamber, poor draft, etc. Powerventers and such should probably use their own timers and match it to them, the longer the better generally, but every application has its querks.

For more info go here:
http://hbctechlit.honeywell.com/Main.cfm?CFID=1618450&CFTOKEN=69929852

For our book on primaries go here:
http://www.firedragonent.com/Books.htm

tommyoil

why

Why would I have to increase the time w/ a chamber(which most of the stuff I work on all have). What is the rationale there. I could understand with lousy draft but what effect does a chamber have on the big picture? Does it tend to hold the heat longer?

Firedragon_4

The possibility of more latent heat! An old

trick is to put a thermocouple into the chassis on shutdown and observe, the Carlin U multimeter will do that!

tommyoil

Got it!

Thanks for the lesson(again). I'll add it to the list of things I have learned from you over the years.