Add Radiant Floor Heat to existing Hydronic System?
I have an old Weil McClain II 100K boiler which is doing just fine with a single-zone setup with old cast iron rads. But now planning a kitchen area renovation and I'm considering saving some space and adding comfort by changing those 3 rooms to under-floor radiant heat.
Is this in any way shape or form a project I can do on my own? I'd of course need another zone, and mixing valve to temper the water temperature. It seems straight forward, but is it?
Or am I better off switching to Runtal wall panel heaters? Or just make room for the cast iron rads that are there now?
Do an advanced search with my user name in the Name Field and "radiant" in the Keyword field to see a number of threads that I have posted and replies I have made to others' posts about radiant floor heating on hydronic systems.
Click on "Search this Forum" in the grey Forum header (not this Post header) to get:
Click on "Advanced Search" to get next screen. Fill in search fields in top section. Click on grey name box to confirm username entry. Click yellow Search button at bottom (not shown). Search returned 20 listings in Boiler forum. There may be others in other forums as well.
Post back with any further questions.
Last edited by 2john02458; 11-21-21 at 10:04 AM.
Reason: Corrected Search instructions. Search must originate in Forum header, not Post header.
My furnace wants to cycle on occasion, I have been chasing this for a couple weeks now. Yesterday's operation was fine, today not so much. Thermostat calls for heat ignitor heats up flames start next then the blower starts.
When it doesn't behave: It will run this above process and few minutes in the process the flame will kick out I can hear the gas valve click on and off while the ignitor try's to reengage, the gas valve continually click on and off continually it sometimes recovers and completes normally other times it starts and endless repeat of the above symptoms. It has never shut down as a result of this it will just keep blowing air and clicking the gas pilot on/off. which make me feel this is not a heat limit switch issue.
I have replaced the flame sensor pilot assembly and thermostat so far and at this point I am considering the control board. In a stroke of genius this summer my neighbors AC had a leak and he elected to replace everything for 9k I asked him if i could have his old furnace and he gave it to me because It is the exact same furnace as mine so I have every part needed at my disposal which honestly looks better than my unit and had no other issues other than the Freon leak.
Hose hitting pressure switch is soft and pliable combustion blower operates normally, filter is and has been clean, I am at a loss at this point other than the control board which for some reason is intimidating me from swapping it out not because it appears difficult and swapping 1 for 1 is simple but what could go wrong and how to handle it. Of course I could be completely incorrect on what this issue is why i will beg forgiveness if so.
Thank you in advance for any suggestions as I am a poor becoming poorer but mechanically inclined retiree
I was having a problem with my blower motor not turning on. I changed the combination fan and limit control Honeywell l4064 and it was still acting up. I then jumpered the heater fan control pictured below and its working fine. I think its supposed to close at 110degrees? Its a few feet above the heat exchanger. Isn't the combination fan and limit control supposed to control the fan on/off at 100/130 degrees also? [h1][img]https://cimg9.ibsrv.net/gimg/www.doityourselft.com-vbulletin/1080x1440/switch_7a35b4e46059c67bcd97d01a94da2823da6d185f.jpg[/img]
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11-21-21, 05:54 AM
