Also check that the long zone is actually really finned copper tubing baseboards, not just naked pipe (that has a much lower heat output rate) and check that air flow through the baseboards is not blocked in the long zone. Continue reading at MULTIPLE CIRCULATORS HOW TO HOOK UP or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX. As long as the central heating system is properly installed and maintained, the pump can be expected to last a long time. Anyway, I’d left it running like that for the past 3-4 weeks – no fault codes – ticking noise appeared to stop after a while. That can sometimes cause confusion in wiring. Just replace all the valves all at once, and treat the whole house as a zone. If I manually pull the lever on the suspect Taco valve, water seems to flow but never shuts off and leaves the circulating pump running 24/7. A domestic hot water (DHW) recirculation system can do that as well as prevent lukewarm water from being dumped down the drain by bypassing it into the cold water line. Approaches to multiple heating zone control for hydronic (hot water) heating systems: Heating zone circulator pumps versus heating zone valves: which approach is better for controlling multiple heating zones in buildings? You can play with zone balancing by closing the outlet louvers on the shorter-zone baseboards to handle the case you describe. If the zone value is open and pump is on the return line it should not hurt it to run full time as long as it is moving water. DC Circulator buses run every 10 minutes during the following hours of operation for each route. Some of this is applicable to residential circulator pumps. Most likely your installer simply needs to add another circulator relay that is switched by the thermostat and that is in turn wired out also to the boiler aquastat. In response to the national coronavirus (COVID-19) pandemic, the DC Circulator is operating on a provisional modified schedule. Anonymous is wondering about water backing up into the other zones. Kenny - as you'll see in the wiring instructions for your zone valve, the thermostat causes a low voltage motor in the zone valve to OPEN the valve so that hot water can flow into the zone. How long to run a pool pump. I’m adding a new zone for a finished basement. Reader follow-up: 4/21/2014 , the heat was turned off this past Saturday. If the hot water is not used, it simply returns back to the tank. Mod Cut Link 3. I took another look at the zone valve and noticed it was not seated properly, possibly off its proper position by ~5 degrees. I find my basement too cold and main floor is warm. Each approach has its advantages and dis-advantages. A timer-activated pump has a customizable timer that can be set to run only at preprogrammed times. Turn it clockwise. After decades of field investigation and forensic lab work, with exception of a few pro-bono or research assignments, I have retired from field work and also from forensic laboratory analysis work to concentrate full time on pure research and writing for InspectApedia.com. We have no relationship with advertisers, products, or services discussed at this website. Can somebody tell me why. When the thermostat is turned on, the circulation pump works and the boiler continues to work to maintain its adjustment temperature. Your long zone could be partly air-bound, or there could be some other obstruction in heat outlet. I have a Grundfos hot water circulator. Pros . Having an inefficient hot water circulator as just described can significantly effect your pocket book. I must send my regrets that our workload as well as the urgency of your situation preclude telephone, in-person, and any lengthy email consulting, whether pro-bono or paid, concerning the question(s) that you have raised. Pumps used in water re-circulation systems can run continuously, or be activated by a timer, thermostat, control panel, or motion sensor. Turn the minute hand clockwise until the time of day on the outer dial is aligned with the triangle marker on the inner dial. However they typically won't run all the time. However, the water bill will increase if this is the case. Many spas use a 2-speed therapy pump, with low speed used for constant circulation, and high speed used for turning the jets on high. This is because the boiler heats the water up to (say) 180, then goes off until the water cools to (say) 150, then starts again. I wondered also and installed at the end of each loop a non-return valve. ZONE DAMPERS for warm air heating system zone control. Or use the SEARCH BOX found below to Ask a Question or Search InspectApedia. In some domestic circulating systems, the hot water inside the pipes is kept at a minimum temperature during circulation, thereby minimising energy consumption, but at the same time ensuring that the waiting time for hot water is kept at an acceptable level. Our photo at left illustrates the use of multiple zone control valves to manage multiple heating zones in a building. Won't this zone suffer when it calls for heat at the same time as the other zones? When the valve is fully open the end switch on the valve closes between the valve's other two wires that turn on the circulator. I have talked to Grunfos technical people and as long as the pump is able to meet the water volume load the smaller pumps are fine. [Click to enlarge any image] circulator wont stop,heating zone circulator runs continuously, Heating zone circulator pump wont' stop running: this article explains how to diagnose & fix a heating circulator pump that runs even when we are not asking for heat. During those cool-off periods the circulator will still run, as long as your thermostat is calling for heat. 2. install larger diameter piping if your plumber, like our very disappointing one in Pougheepsie, saved a dime on the installation by using 1/2" rather than the usual 3/4" diameter heating supply piping. On cold nights with the new setup the heat didn't keep up and the house got progressively colder, which it did not do previously. Do circulator pumps run all the time? While this was written to fall into the scope of commercial maintenance, much of the information can also be used in residential systems. I should add that the below was recently installed (along with a new furnace) by an HVAC company. There are better designs such as the Satchwell but are still very expensive. I have a 4 legs coming off my boiler, each with a separate circulating pump. It's not that the inspector is necessarily smarter, but rather that they have different experience. However since each zone is individually regulated by a thermostat and in your case zone valve, that means in essence that the colder zone should simply call for heat longer until satisfied. I removed the wire from connection 4 on all 3 zone valves and the pump continued to run. The disenchanted also point to pumping capacity or flow rates possible with multiple circulators or variable speed circulators, and the use of circulators to operate the separate heating "zone" used. When the valve is fully open, an "end switch" in turn talks to the circulator relay to tell it to start the boiler's circulator pump. Generally, no. They are commonly found circulating water in a hydronic heating or cooling system. Circulator pumps are small in size, making them harder to repair on your own. Hey all, I'm sure most of you that have circulator pumps in your heating system, have those little '00' series green Taco pumps. Their purpose is to allow water to flow through your heating system in one direction and only flow when the circulator pumps are running. Arguing whether multiple circulator pumps (photo below) or multiple zone valves is a better approach to heating zone control is like arguing religion. Pump capacity needs to be checked from time to time to make sure the impeller is not damaged and has the appropriate capacity to pump the proper amount of liquid through the loop. The fans of heating zone valves argue that the valves are easier to install, less expensive, and require less maintenance than individual circulator pumps. There are a few tell-tale signs that indicate your circulator pump system isn’t working correctly. Variable-Speed Pumps: This pump also comes with a 24-hour timer; you can opt to leave the timer off and run the pump all the time. We decided to try running the circulator pumps only when the house hope you voted AND that our votes get counted. Neither the plumber or electrician seem to know how to wire it all to the boiler. Here we discuss the alternative methods of multiple heating zone control, choosing between using individual heating zone controls typically all serviced by a single circulator pump and controlling zones with zone valves (photo at left) and using individual circulator pumps, one for each zone. The UP 10-16 digital timer allows the pump to be programmed to run only when hot water is needed. Look for how to guides here to find quick and easy guidance and support for all phases of your project. The circulator pump would still turn on though the … Arg! Hi, Everything needed for install included with purchase. This process saves water, utility costs, and energy and sewer expenses. Don't waste the water while you wait for it to get hot. AndyTypically a circulator is indeed sized to handle the case of all heating zones calling for heat at the same time.Once you've got hot water from the boiler circulating through a zone, the main difference in time to warm that zone will be the zone size and the zone area's rate of heat loss. Pumps are sometimes used to control various zones in heating systems. Imagine a weighted flap inside. As you turn it, the Triangle Marker (see picture above) will rotate. When using pumps for zoning,what stops the water from enterning the other zones. MULTIPLE HEATING ZONE CONTROL at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice. Could you offer assistance if I send you photos? Is this actually a zone valve issue? Joined: Nov 29, 2010 Location: Maine. and resolve simple problems. The pump will run continuously when the switch is set to "i" (on) position. Anon: the flow-control valve, a check valve usually found at the boiler hot water riser pipe(s), prevents water from circulating through zone piping until the circulator for that zone begins to spin - causing a more significant pressure difference across the zone. Only those pumps needed to maintain adequate velocities need be run. That said, 8 hours is a good amount of time to run your pool pump in most cases. Keep me posted, and stay warm, More complete answer: It depends upon how the boiler is configured. Alan Thanks Mark, that feedback will help other readers. This pump also comes with a 24-hour timer; you can opt to leave the timer off and run the pump all the time. Then the pump would only recirculate the hot water during that time. This could save some money on labor costs, but it’s important to do this only if you have enough experience to do so. it must have not been put on completely right, after reconnecting the zone valve head the circulator pump wasn't running all the time anymore. Then the zone valve's end-switch that closes to turn on the circulator relay. Those less enchanted by zone valves argue that zone valves jam, stick, don't work reliably and are thus annoying. [Image at left, Grundfos alpha series variable speed circulator pump - Click to enlarge]. This loop can run constantly, or it can be used with a timer that may even be built into the unit.
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