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taco zone valve control troubleshooting

Hi, i finally figured out why i keep burning out my magnetic contactors that feed the elements in my electric domestic boiler! But since the pump contactor did not energise, I've used a spare thermostat to feed the it.

I have a two zone heating system. If it's a standard 40VA like you find on a lot of equipment from the factory, 7 of those valves will try to draw 60VA if they all open at once. I found the old thermostat (with batteries) and the remainder of the 18 gauge wire that I used to run C wires from haulers to ecobees and connected that wire on one end to the Rh wire from the 24V transformer to thermostat and W1 wire from thermostat to zone valve. Most of the time this is not a big deal, usually zones are set to temps that are fairly close &no onenotices a few degree difference.

Hot water heating system zone valve installation: All switching relays are ul listed, and are compatible with conventional and programmable thermostats. Zone 1 works fine but 2 doesn't.

turned down. Connect the modulating output to appropriate input terminals on the boiler; noting that the polarity is correct. I have a Burnham boiler with 3 Taco pumps feeding radiant panels in my home. Location: Do not mount to a surface that exceeds 104F (40C). The taco zone valve has three electrical connections, and one of them goes to the main boiler controls. I have only one that is wired for the moment & suspecting a faulty valve head was in my trouble shooting sequence.

If you want to save troubleshooting a taco. The system only fires zones for heating. Consult the dealer or an experienced radio/TV technician for help. Problem: No heat in a zone or room of the building. - The 2nd wire from the transformer goes to. 0000063887 00000 n 0000115321 00000 n When heat is called for again, it only opens partially, and, again, the boiler is on almost constantly, with the heat barely trickling in, unless I manually fully open it. taco valve zone way zoom sweat valves I also checked the 28V transformer although I knew it cannot be the issues as it supplies power to both zones. You can also try temporarily switching the zone valve directly by substituting a jumper for the thermostat, See solutions at COMMON WIRE at THERMOSTATS. Taco reserves the right to make changes in details of design, construction, or arrangement of materials of its products without notification. On 2016-01-23 by (mod) zone valves for radiant heat. Taco makes a 1-valve that you can insert into the line of each zone. Comment document.getElementById("comment").setAttribute("id","a9c8ddae2394264912341ea635ec92c5");document.getElementById("afe6277d1c").setAttribute("id","comment"); Save my name, email, and website in this browser for the next time I comment. It controls the flow of water in a room or zone in response to the demands of the room or zone thermostat. On 2016-06-06 by (mod) thermostats not working right - shorted wires? zone valve taco wiring diagram wire water heater operation three indirect explained within works As the air temperature at the thermostat drops to the thermostat setting, a normally open contact in the thermostat closes. Zone valve features a brass construction. So i did some basic troubleshooting, and everything electrical checked out ok. I have an issue with my forced hot water baseboard heat. When during a night I use the manual ON lever on the valve the boiler kicks in and works just fine. This device may not cause harmful interference. All rights reserved. ;Dl.j:-)Q|[ZFGGGtBP 1(p);*k|;Wpc4IL9 q2e$ vWHn+;fu "2 endstream endobj 9 0 obj<>/Metadata 6 0 R/Pages 5 0 R/Type/Catalog>> endobj 10 0 obj<>/ColorSpace<>/Font<>/ProcSet[/PDF/Text/ImageC]/Properties<>/MC1<>/MC2<>>>/ExtGState<>>>/Type/Page>> endobj 11 0 obj<> endobj 12 0 obj<> endobj 13 0 obj<> endobj 14 0 obj<> endobj 15 0 obj<> endobj 16 0 obj<> endobj 17 0 obj[/ICCBased 46 0 R] endobj 18 0 obj[/Separation/PANTONE#20272#20CVC 40 0 R<>] endobj 19 0 obj[/Separation/PANTONE#20272#20CV 40 0 R<>] endobj 20 0 obj[/Separation/PANTONE#20348#20C 40 0 R<>] endobj 21 0 obj<>stream SZ Series PowerTrack Motorized Zone Valve This is a legacy product document supported by Resideo. Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. 0000002421 00000 n Its fairly easy to test the valve with a multimeter, and if the test reveals an internal electrical problem, you can replace the head without disturbing the valve itself. Designers prefer these valves for their quiet and dependable operation. All 3 were replace about 5 years ag. THE ABOVE WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR STATUTORY, OR ANY OTHER WARRANTY OBLIGATION ON THE PART OF TACO. At the mid-point of the longest wall, under the window, is a steam radiator. This site is protected by reCAPTCHA and the Google. Circulator Output; Secondary / AUX 1 (120 vac): Circulator Output; Primary / AUX 2 (120 vac): Circulator Output; Priority Zone / AUX 3 (120 vac): PA01-V ZVC406-5 with 5 Zone Valves & Indirect DHW; Supply & Return Headers, PA02-V SR506-5 with 5 Zone Circulators & Indirect DHW; Primary/Secondary, PA03-V High & Low Temp Temperature Zones + Indirect DHW; Primary/Secondary, PA04-V Oil Fired Boiler with Tankless Coil; Supply & Return Headers. Increase the separation between the equipment and receiver. Zone 2 heat works perfectly fine during the day, I checked the Rh and W1 wires with voltmeter, get 28V reading. The 1st floor new addition will be lets say zone 2, the 2nd floor will be zone 3 and eventually the existing structure of the first floor will eventually be turned over to base boaseboard and made zone 1. That is, all heating zones are on all the time. 0000055619 00000 n 0000005643 00000 n We have three zones and now it seems the two zones for the upstairs are running concurrently. pump magnetic contactor.Therefore: (a):- the thermostat circuit is completed from the transfo, to contact #2 on valve, out at contact #1, through the thermostat & back to the transfo. Hang the panel on a wall with one mounting screw. If in doubt as to whether a particular substance is suitable for use with a Taco product or part, or for any application restrictions, consult the applicable Taco instruction sheets or contact Taco at[401-942-8000]. Thus, overriding the thermostat in that particular zone. Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. Taco pumps & check valves do not stop water from flowing when the system is not calling for heat , they just stop circulating it is all. The small plastic switch lifter melted loose and allowed the heater to run continiously till it burnt out. IF you can't move the mechanical valve parts then the zone control needs replacement. If this equipment causes harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by doing one or more of the following measures: NOTE: THE GRANTEE IS NOT RESPONSIBLE FOR ANY CHANGES OR MODIFICATIONS NOT EXPRESSLY APPROVED BY THE PARTY RESPONSIBLE FOR COMPLIANCE. It is no, Honeywell Home V4043 Motorized Zone Valve APPLICATIONS The V4043 valve has been designed to control the flow of, Owners Manual Please Read & Save These Instructions Rechargeable Fan with Stand Base Features: 3 Speeds Runs up, Comfort Zone CZPH20RSL Outdoor/ Indoor Electric Patio Heater Features: Powerful Golden Halogen Heating Element Full Functioning Remote Control. This article series helps troubleshoot and fix problems with zone valves on hot water (hydronic) heating systems. On 2016-12-26 by (mod) could a bad zone motor explain it sticking? I changed the zone valve and ecobee, did not help, exactly the same issue. I know nothing about this stuff so really unsure! You'll need to use either a coupling (shown below) or a SharkBite connector that provided a male NPT fitting on one end. Unless there is some kind of device that I can hook up to ecobee and downstairs that will communicate to each other(maybe something could be built using 2 rasberry pi). The boiler end switch relay and modulating output will be controlled by the reset algorithm. Hello I could use some advise. Your email address will not be published. Post Purge Operation: When the dip switch (#4) is set to ON, the priority zone output will stay energized for 2 minutes after its thermostat or aquastat is satisfied, but not operate the boiler. Changing the zone valve head is a good diagnostic step to rule out. - The 3rd terminal on the valve goes to the other pole for the circ. However, when we built an apartment (garage modification) behind us for the mother-in-law, other zones would "bleed" into the apartment. Do not try using PEX tubing as the heating system temperatures are likely to exceed the PEX maximum (typically 130F). H\j0 BPi!FBa 8IyV`Db9ccU3jx Just installed two new Taco circulator pumps on my system this weekend. In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna shall not be less than 20 cm during normal operation and must not be co-located or operating in conjunction with any other antenna or transmitter.ISED Regulatory StatementsThis device complies with ISED Canada license-exempt RSS standard(s). I just wasn't sure if the was something I was missing.Thank youKarl, have a gas heat boiler that keeps overheating it starts banging and the relief valve goes off have replaced circ pump expansion tank relief valve zone control panel supply valve and problem is still there boiler is a super hot Saturn series.

However, Gwen, with all of the zones left in the manual "ON" position you have no zone control. Priority protection time delay adjustment. I HAVE 8 ZONE VALVE DO I TO BLEED THEN EVERY YEAR AND WHAT THE BEST WAY, On 2016-10-20 by (mod) voltage drops when 7 zone valves are on one transformer, Good question, Andre.We often read about people hooking up too many zone valves to a single transformer, overloading it. The green LED should always be on, indicating that power is connected, and the solid-state fuse is good. HelpI'm concerned that if the zone valve is stuck open the problem may be in the valve body not the motor. And one on my central heating? If your circulator pump relay is not working then either we've made an error in wiring or the zone valve end switch isn't working. Solution: LED diagnostic lights will help find a component that is not working properly. I am guessing something is wrong here as i know when the lower zone is not calling for heat there is no voltage on the wires that go into the taco 571 zone valve. Gently push in tab in with finger on side of inner cover. Dry Contact End Switch:ON/OFF boilers are controlled by the Main Boiler End Switch on zone control. I was wondering If I could replace a 40004850-001 Honeywell end-zone valve with some other replacement Zone Valve. 0000023499 00000 n I'm not touting this particular brand nor any other specific product. But if I want to isolate one zone (for repairs, busted pipe), and the only way is to shut off the water to the furnace, thus shouting down both zones. On 2016-01-01 by (mod) basic zone valve wiring debugging. Are these valves just ball valves?https://inspectapedia.com/heat/Zone_Valves_010_DJFcs.jpg. New taco zone valve does not energise the circ. 0000002942 00000 n Website operating For assistance on warranty returns, the purchaser may either contact the local Taco stocking distributor or Taco. These limits are designed to provide reasonable protection against harmful interference in a residential installation. At the same time when I test the Rh and W1 wires upstairs there is 0 voltage. On 2016-12-13 13:03:05.522294 by (mod) Drayton ZA5 zone actuators & multiple controls. I have a 3 wire Taco zone valve and I'm not getting heat on that zone. 0000053007 00000 n 0000015653 00000 n Connect 2 on Master zone control to 2 on all Expansion zone control(s). I have an Argo AZV 244P Zone Valve Control unit and Honeywll Rev A 40004850-001 zone control valves. U{/{$mMf^6T85j\wL}>OS4#,sd#c>52WEM-vp?m]. I am switching from an oil burning boiler to a high efficiency gas Bosh boiler. The voltage will sag, the current will go through the4 roof, and you'l burn the windings on those tiny synchronous motors.

It seems that if the zone valve has 24 volts and the end switch is turning on the circulator but I don't have heat the zone, the valve body must be stuck or frozen closed. Vad. And yes, I have an open loop system that feeds on my softened and filtered well water, but my heating system is well equiped with many automated gas purging devices. Connect 1 on Master zone control to 1 on all Expansion zone control(s). Mount the Taco outdoor sensor P# 9300-2052RP on the north side of the building and wire to the Outdoor Sensor terminal block on zone control. In that case,search InspectAPedia.com for AIR BOUND HEATING SYSTEM to read repair details. With a goal of getting tools into the hands of more women, this new web service enables people to set up consultation calls with women and nonbinary pros on a variety of home-construction projects. When the zone valve is fully open, the red light goes on and energizes the boiler end switch relay and AUX circulator relay(s). Thanks everyone for the info. But SharkBite, used in an all-copper system can work. Time Delay for Zone Valves without End Switches: When the dip switch (#6) is set to ON, the boiler end switch relay(s) and AUX 1, AUX 2, and AUX 3 circulating pump outputs are delayed operating by 1 minute.

I have moved the zone valve to manual so it is receiving heat when other zones fire the boiler. 0000037045 00000 n So I'd look for a sticking zone valve or bad zone valve control head. 0000040627 00000 n i have 2 zones to my furnace basement zone works , but the zone upstairs makes noices as if its working furnace kicks on (2 mins) but no hot water going thru pipes Help! The t stat is a new Honeywell type that looks like the old round ones but has no mercury switch in it. If the subject product or part contains no defect as covered in this warranty, the purchaser will be billed for parts and labor charges in effect at time of factory examination and repair.

I would be hiring a professional to remove the radiator, I will not be undertaking anything that I don't think I could handle. The new one has the same problem - it only opens partially. Any suggestions would be appreciated. Below is a photo showing typical Sharkbite connectors, in this case where I was hooking up a Bosch tankless water heater to a control valve and a service drain. submitted to our "DoItYourself.com Community Forums". TACO OFFERS THIS WARRANTY IN LIEU OF ALL OTHER EXPRESS WARRANTIES. Wire the Main Boiler End Switch to T T input on the boiler. It doesnt work. Connect terminal 2 on ZVC to the other motor connections on the zone valve. My neighbor had almost the exact same problem. Troubleshooting a taco zone valve checking the voltages images that posted in this website was uploaded by media.wcyb.com. These hot water heating zone valve questions & answers were posted originally at ZONE VALVES, HEATING - you should see the repair advice given there.

ShibuTake a look at the photos at ZONE VALVES, HEATING - you can see the mostly silver-covered zone valves - usually located near the boiler and best, on the cooler return-side of the heat piping loop. Maybe too much gunk accumulated in them which stops them from closing all the way, and allows hot water to get into that zone when adjacent pumps are running. Pressing the Escape (ESC) button will close the modal and bring you back to where you were on the page. The Taco valves have only 3 wires.The diagram for the Taco valve shows: - 1 wire from the transformer that goes to feed the thermostat & continues on to the # 1 terminal on the valve. The honeywell zone valve end switches cause the magnetic contactors to chatter. On 2015-11-07 by (mod) unwanted heat in one zone, Look for- thermostat wires shorted together- a zone valve stuck open- a flow control valve at the boiler stuck open or manually in open position, I have a 2 zone hot water baseboard the upstairs baseboard is hot with the thermostat turned off, On 2015-05-07 by (mod) stuck zone valve diagnosis. Lately it has happened more often so I need to correct it. This is a one circulator system. On 2015-11-24 by (mod) possible bad zone valve motor. Preferably the NON SWEAT type . To fix the problem I installed a solenoid valve on the zone, a normally closed valve that only would open when the pump was energized.

I think the titles are clear. 0000019456 00000 n Joe,If nobody changed the wiring then more likely the valve is jammed open or its motor has failed. I replaced the thermostat and all seemed fine for a day, now back to thermo runaway. 0000176266 00000 n 0000169579 00000 n 0000002311 00000 n I have a 2 zone heating system (3 if you include the hot water). Thomas They cost about $15. Then I notice a zone is cold, go down and tighten them up again and the zone immediately kicks in. But it works in the open position? Other bad news is that when i took my 1st bath with the new 50gallon HW tank, the HW stopped about 1/4 of the way in filling and turned cool. "SharkBite Universal fittings have a maximum temperature of 200F maximum pressure 200 psi when used on copper pipe.". Those details are in manuals found at ZONE VALVE MANUALS & WIRING After some further inspection, it looks like the problem may be mechanical in nature. Pump Exercise Operation: When the dip switch (#5) is set to ON, the solid-state timer cycles all the zone valves a nd circulating pump outputs that are attached to the Zone Valve Control t o run for 30 seconds every 2 weeks. 0000006356 00000 n All switching relays are ul listed, and are compatible with conventional and programmable thermostats. (at the companys option) any product or part which is proven defective under normal use within three (3) years from the date of In order to obtain service under this warranty, it is the responsibility of the purchaser to promptly notify the local Taco stocking distributor or Taco in writing and promptly deliver the subject product or part, delivery prepaid, to the stocking distributor. Jack Is there any danger to turning the knob (thumbscrew) too far to the left or right? I know this will be a wiring issue requiring a signal from somewhere to ensure this does not happen.My wiring is very close to the S plan wiring. 0000007097 00000 n This may dislodge the gunk more easily, and allow the flowing water to "wash it out". Questions of a Do It Yourself nature should be in a water boiler system with approx. When dip switch (#6) is set to OFF, then either zone valve with an end switch or jumper between terminals 3 and 4 of zone output is required. suggestions. That's the usual 4-wire Honeywell zone valve set-up. 0000004469 00000 n I'm down with the air block also. What are the chances of all 3 valves going at the same time? But that is a very wild guess as I noticed the issue happening exactly at 10PM on those days. AUX 2; Primary Circulator Output: The AUX 2 output follows dip switch setting # 3 listed above. Hot water heating system zone valve installation. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

pump magnetic contactor does not energise. But, I don't know what the best solution is. If so, try that. However, this year that approach hasnt worked, and what I think are the zone valves look horrible. So I moved it back. Note: appearance of your Comment below may be delayed: if your comment contains an image, web link, or text that looks to the software as if it might be a web link, your posting will appear after it has been approved by a moderator. pump magnetic contactor , to #2 contact on the valve, out contact #3 on the valve & back to the other pole on the circ.

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taco zone valve control troubleshooting

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