Outdoor Wood Furnace Info

All-Purpose OWF Discussions => General Outdoor Furnace Discussion => Topic started by: bruey on October 18, 2013, 05:17:32 AM

Title: Running the water pump?
Post by: bruey on October 18, 2013, 05:17:32 AM
Had the HVAC guy out yesterday to go over my furnace, makes my wife feel better. Anyway he was looking at my system asking questions and he asked one I couldn't answer. He wanted to know why the water pump on my boiler wasn't tied to my secondary thermostat that runs my blower on my furnace during the winter? He thought it would keep the water warmer staying in the boiler outside vs circulating all the time when the blower was not in use.  Told him it might have to do with keeping the water all the same temperature but really didn't know. Help me out guys!
Title: Re: Running the water pump?
Post by: slimjim on October 18, 2013, 05:37:39 AM
If you have decent pipe the heat loss by running the circ is very minimal, shutting the circ off would only cool the lines off and when they come back on it will give a blast of cold water back to the boiler, also the circ on an open system will last much longer by letting it run , power consumption should be between .75 and 1.5 amps to let it run.
Title: Re: Running the water pump?
Post by: Scott7m on October 18, 2013, 07:27:43 AM
Yea and with most systems that's the only way to make your plate or side arm heat exchanger work properly....   There is many reasons behind it.   
Title: Re: Running the water pump?
Post by: bruey on October 18, 2013, 02:38:16 PM
Great points that I totally forgot. Thanks
Title: Re: Running the water pump?
Post by: ffbare on September 15, 2014, 10:09:28 PM
So it is good practice to keep your circulating pump running 24 7  right?  Just making sure I have read mixed things.  Thanks guys
Title: Re: Running the water pump?
Post by: mlappin on September 15, 2014, 11:13:20 PM
I'm sure circulators don't have em, but something to consider on larger single phase electric motors, every time you start a motor, thats one less time it going to start. Larger single phase motors have a centrifugal starter switch in them that will go bad eventually, most electrical components life spans are either rated in hours ran or cycles.