Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
New house with radiant system
running_81620
Member Posts: 4
I bought a house over the summer with a radiant system. DHW is supplied by a tankless heater. A natural gas boiler provides heat for the radiant system. It looks to be a closed system akin to the drawing here: http://www.houseneeds.com/learning-center/hydronic-boilers-learning/fill-and-purge-hydronic-boilers-4
There is a backflow/pressure reducer/ball valve (in that order) which looks to provide water into the radiant heating system (and keep it there). The ball valve is closed. Does the ball valve need to be open? I'm not sure if the valve was closed for the summer or if the valve is only used when adjusting the water in the radiant system.
Thanks for your help!
There is a backflow/pressure reducer/ball valve (in that order) which looks to provide water into the radiant heating system (and keep it there). The ball valve is closed. Does the ball valve need to be open? I'm not sure if the valve was closed for the summer or if the valve is only used when adjusting the water in the radiant system.
Thanks for your help!
0
Comments
-
-
There is no Low Water Cutoff I can see. The supply runs through the valve in question and joins a pipe with the thermostat below and the manifold for the in-floor heating above the junction the pipes meet.0
-
Can you post some pics of your boiler and its piping from about 10' away? If you don't have a LWCO and your water supply is truly closed, that needs to change quickly.Steve Minnich0
-
-
No LWCO I can see. I would open that valve, keep an eye on the pressure, it should be around 12-15 psi typically. The pressure gauge is located on the left side of the boiler and likely does pressure and temperature. Make sure you are looking at the correct scale, a lot of gauges do both PSI and KPa for pressure. Watch out for creep, make sure pressure doesn't rise above 15 PSI immeadiately, but check it again in an hour or so to make sure. If the pressure does not rise, then you are fine, leave the valve open. If it does, get a pro out there to change out the pressure reducing valve (also called a boiler feeder).2
-
Looks like you are filling the boiler with soft water? How hard is the incoming water?Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
Opened the valve and turned up the thermostats in the house. System is working fine. PSI at the boiler is at 17 and steady. Is this an ok operating pressure? The pressure reducer is tagged for 12-15.
The softener does get the water first. I can't say why they choose that method. The house is 20 years old, if that matters.
Thanks for all the guidance!0
Categories
- All Categories
- 85.8K THE MAIN WALL
- 3K A-C, Heat Pumps & Refrigeration
- 50 Biomass
- 419 Carbon Monoxide Awareness
- 91 Chimneys & Flues
- 2K Domestic Hot Water
- 5.2K Gas Heating
- 93 Geothermal
- 150 Indoor-Air Quality
- 3.4K Oil Heating
- 59 Pipe Deterioration
- 920 Plumbing
- 5.8K Radiant Heating
- 374 Solar
- 15K Strictly Steam
- 3.2K Thermostats and Controls
- 50 Water Quality
- 40 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements