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.
Zone Valves on Priority DHW.
ChasMan
Member Posts: 462
At present I have two zone pumps for five zones with valves and another pump for DHW. I am controlling priority by shutting off the zone pumps. The pumps all have IFC's. I have tried a number of things, swing checks, ball checks, messing with the piping. I hate flow checks at this point. They are all too noisy for my taste. So, I want to rewire the system.
My thinking is that if I shut the zone valves off on a priority DHW call, then I don;t need the flow checks in the zone pumps at all.
Is there a way to wire up a relay panel to do this or is it a roll your own kind of thing?
My thinking is that if I shut the zone valves off on a priority DHW call, then I don;t need the flow checks in the zone pumps at all.
Is there a way to wire up a relay panel to do this or is it a roll your own kind of thing?
0
Comments
-
Taco
sr503 with optional priority?Nevermind, I have to read better.0 -
SR503
Yes, the SR503 is what I have with a few mods.. Im using the boilers reset control to do the priority since it also has DHW scheduling and thermostat as well. But even if I use the SR503 for priority, it still just has 24VAC constant on. What I was thinking was an extra set of contacts to cut 24VAC motor power to the valves on a priority call for heat. I guess it isn;t that hard to rig but it doesn;t appear to be SOP. I just want those flowchecks gone if I get a little ghost flow or gravity flow through the zone pumps I think I should be ok as long as the zone valves are closed. I worry about hammer though since the DHW pump will start as all the zone valves close at the same time.. Might be ok. I guess I will have to try it.0 -
We used what's called
a RIB relay once to prioritize one zone valve out of 4 for an indirect . A zone valve with normally open / normally closed contacts can do the same .
Personally I'd keep one circ for the indirect and one for the heat and make 'em run with a reset control . When we use zone valves with an IFC circ , we usually pop out the check .0
This discussion has been closed.
Categories
- All Categories
- 86.3K THE MAIN WALL
- 3.1K A-C, Heat Pumps & Refrigeration
- 53 Biomass
- 422 Carbon Monoxide Awareness
- 90 Chimneys & Flues
- 2K Domestic Hot Water
- 5.4K Gas Heating
- 100 Geothermal
- 156 Indoor-Air Quality
- 3.4K Oil Heating
- 64 Pipe Deterioration
- 918 Plumbing
- 6.1K Radiant Heating
- 381 Solar
- 14.9K Strictly Steam
- 3.3K Thermostats and Controls
- 54 Water Quality
- 41 Industry Classes
- 47 Job Opportunities
- 17 Recall Announcements