How to wire a zone valve on a boiler

Nov 30, 2016 ... Sorting out and testing the end switch wiring, if the end switch is to power a pump, a relay should be used, I don't think this wiring will ...

How to wire a zone valve on a boiler. The installation and user manual for each combi-boiler models includes multiple installation diagrams for various applications including: Zone systems with pumps. Zone systems with zone valves. Air handler systems. Air handler systems with RS-485 communication. External recirculation mode with dedicated return line.

Once i make the switch from zone valves to zone actuators will the zone valves still work when each of the 3 thermostats call for heat? Save Share. Like. ... Some places require that the wire from the boiler to the pump needs to be armored. Not sure if that applies to you. You'll want to insulate the sensor on the pipe, so that the air doesn't ...

Boilers - Home Heating Steam and Hot Water Systems - C-Wire for Nest Thermostat with WeilMclain Ultra 155 Boiler/13 ZoneValve - Hi, WeilMclain Ultra 155 Boiler and 13 Honeywell Zone valve installed in my house. I have most of the nest thermostat (Learning and Nest E) and all of them are working fine without havingHow to repair Honeywell Zone Valve - Part number: V8043E1012 + V8043E1061 Honeywell Zone Valve Rebuild Kit: https://amzn.to/2LlDYVAHoneywell Zone Valve: http...When the zone valve fully opens and its end switch makes contact, the red LED will come on, the boiler turns on and a circulator will start if connected to the zone control. For information on Taco’s Zone Valve Controls (ZVC) including catalog sheet, instruction sheets, Visio stencils and our highly praised Zone Controls WiringI have 3 zones, currently running 2 wires (r&w). There is an extra wire behind each thermostat, that runs down close to the boiler, none of those wires are connected to anything. My current transformer is …R from the transformer goes to R on the thermostat. W from the thermostat goes to the motor on the zone valve. In the case of 3 wire zone valves the thermostat W goes to the motor that is not a common wire with the end switch (like the #1 terminal on the Taco 570 series valves). The other motor wire then gets connected to the C on the transformer.- The three-way valve cannot be transformed into a two-way valve and vice versa. - When zone valves are installed, the direction of flow must be observed. a diverting valve configuration - Two-way zone valves can be installed either in the supply or return piping; the direction of flow indicated by the arrow on the body of the valve must be ...Hot Water Boiler Piping Zone Valves Wiring Diagram Quality 1. Dakota Supply Group 24v 3 4 In Npt N C Zone Valve. Honeywell Motorised Valve Clearance 50 Off Www Ingeniovirtual Com. Control A 3 Wire Zone Valve With 2 Thermostat Geek Wisdom Com. China 2 Port Motorized Zone Valve 5 Wire Replaces Honeywell V4043h Photos Pictures Made In Com.There should be two red wires coming out of the zone valves, and two Heating T-Stat terminals in the boiler. So each red wire will go to one of the Heating T-Stat terminals. According to the Manufacturer's installation instructions , there should be a special cable that connects the low water cut off to the boiler (see page 56).

When the zone valve fully opens and its end switch makes contact, the red LED will come on, the boiler turns on and a circulator will start if connected to the zone control. For information on Taco’s Zone Valve Controls (ZVC) including catalog sheet, instruction sheets, Visio stencils and our highly praised Zone Controls WiringI’ve converted the house into a 3 zone system using Taco zone valves and a Taco zone valve controller, still using a single circ pump. Previously, the wiring was much simpler. The thermostat connected directly to the boilers control module and the circ pump did as well. Now that I’ve introduced the zone valve controller and wired ...We frequently wire several zone valves or zone pumps to one transformer in a parallel circuit. Again, the transformer is the power supply. The zone valves or zone pumps are loads. Each zone valve has its own switch, which is a thermostat. Get a room full of plumbers together and ask, “How many zones valves can we put on a transformer?”The installation and user manual for each combi-boiler models includes multiple installation diagrams for various applications including: Zone systems with pumps. Zone systems with zone valves. Air handler systems. Air handler systems with RS-485 communication. External recirculation mode with dedicated return line.Zone diagram wiring honeywell valve diagrams boiler valves water hot piping control enlarge thermostats stc help furnace highperformancehvac Adding zone valves to weil mcclain he boiler — heating help: the wall Wiring zone boiler valve valves open stuck converting zones two guide properly heating 0bBoilers - Home Heating Steam and Hot Water Systems - How to wire an indirect water heater to a Honeywell Zone 8043F Valve ... Previously i had a smart control on indirect water heater so there were 4 cables going out from the heater:2 to zone valve and 2 to the boiler. And the boiler ones were connecting to 2 other cables that are comming from ...In this video, Dan shows us how to change out the actuators on a number of popular zone valves offered on SupplyHouse.comValves include...Taco Heat Motor Zon...

then link terminal 4 to terminal 6 with a link wire. Checkout procedure To ensure the valve is plumbed and wired correctly, carry out the following checks after filling the system and switching on the power. 1aCheck manual lever is in ‘AUTO’ position. b Check programmer has power. c Check boiler is switched on and its thermostat set to maximum.L3 - RED-HIGH WATER TEMPERATURE L4 - RED-BLOCKED FLUE L5 - GREEN-BURNER ON L6 - RED-BLOCKED DRAIN L7 - AMBER-LOW GAS PRESSURE L8 - RED-FLAME FAILURE L9 - RED-LOW AIR PRESSURE L10 - CLEAR-PRE-PURGE. #1 THROUGH #12 ARE CONNECTED ON IGNITION MODULE. IF ANY OF THE ORIGINAL WIRE AS SUPPLIED WITH THE APPLIANCE MUST BE REPLACED, IT MUST BE REPLACED ...gas valve, igniter and blower. When a room thermostat calls for heat, the IBC starts the system circulator and blower. The IBC runs the blower to purge the boiler flue passages, then turns on the igniter and lets it warm up. After igniter warm-up, the IBC opens the gas valve, turns the igniter off, and checks for flame.My original home heating system is 3 zones of fuel oil-fired hot water baseboard with dated, 3-wire, 1F35-910 White-Rodgers stats and 1311 zone valves. We added a ducted heat-pump system with back-up electric heat to two of the zones, controlled by a Nest stat. Pref 1: replace the 2 stages of e-heat with the hydronic system so the hydronic ...NCB-H Combi-Boiler with Multiple System Zone Valves Shown with Manifold Kit Part #30026576B . PDF DWG. NCB-H Combi-Boiler with Multiple Zone Circulators Shown with Manifold Kit Part #30026576B. PDF DWG. NCB-H with Circulator or Zone Valves. NCB-H Combi-Boiler Application - Multiple Zone Circulators Low Temperature Zones Shown.

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Three Taco Circulating pumps (1 for boiler circuit, 1 for heating circuit, 1 for DHW circuit) Honeywell two wire heating only thermostats (8, one per heating zone) I have the piping set up so there is a circulation loop that feeds everything and zone valves handling the 8 heating zones and a circulation pump handling the DHW loop.Specialty Thermostat and Zone Valve Wiring 52 - 56 Radiant Mixing Block 57 - 58 X-Pump Block 59 - 61 iSeries Mixing Valves 62 - 63 ... BOILER ZONE 4 ON OFF PRIORITY Y FUSE 1 AMP 24 VAC POWER ZONE 4 120 VAC INPUT TO: "TT" ON BOILER TORS ZC ZR X X END SWITCH ZONE4 POWER INPUT SR 504 POWER ZONE 1 ZONE 2 ZONE 3 ZONE 4 T T T H NThe zone valves should be located on the supply side of the zone circuits to eliminate heat migration into inactive zone circuits. The tee shown below the zone valves is a “bullhead” tee. When both zones are on, return flows slam directly into each other. This creates turbulence and noise. It also wastes circulator head.On 2019-09-12 by (mod) -. Spencer. 2 common causes for a zone valve refusing to open unless another zone is active are. 1. Zone valve is not wired correctly. 2. Zone valve is controlling a subordinate Zone that is actually fed off of one of the other zones' hot water line.5). Attach a “spare” wire to the C terminal – such as the Black wire for C or Common. 6). Attach the Light Blue wire to the X/Aux terminal for Auxiliary heat. 7). Attach the Dark Blue wire to the B terminal for Reversing Valve for Heating. 8). Attach the Orange wire to the O terminal for Reversing Valve for Cooling. Thermostat Wiring ...Zone Sentry Zone Valves. Taco Zone Sentry ® Zone Valves provide on-off, normally open or normally closed control in closed hydronic systems. (See Geo-Sentry for open system application.) The valves can be used …

However, two of the three most common boiler faults can be handled by a competent DIYer and don't always require the attention of a costly heating engineer. 1. Boiler losing pressure. If your boiler loses pressure it could be one of a few things. Most commonly, it will either be a leak, you've recently bled your radiators and the system has ...Honeywell V8043e1012 Motorized Zone Valve Sweat. Dakota Supply Group 24v 3 4 In Npt N C Zone Valve. Need Some Advice On Wiring Boiler Zone Valves Heating Help The Wall. Honeywell Zone Valves Valve Parts Catalog Manualzz. V8044a1044 U. Zone Valve Wiring Manuals Installation Instructions Guide To Heating System Valves Inspection RepairDec 7, 2014 · In this video I replace a video and purge the air from the system.Not a complicated job, but a few tips to help along the way! The ONLY video on the internet that shows you how.Nest Power Connector: https://amzn.to/3hy1l2PNOTE: A separate power connector is required for EACH Nest The...Installing the Actuator. 1. Move the manual open lever to the lock open position. 3. Align valve stem to the mating actuator hole. Move stem if required for proper alignment. 4. Press the push button in and slide the actuator onto the valve body, release the push button.Heating problems in a Maytag oven can be caused by problems with element functions, oven control system, fuses or oven temperature controls. Other possible causes are a faulty igni...How to wire a Honeywell V8043E 1012 Zone Valve Perfectly by jerry. Note: Updated diagram at end of videoWiring drawing here: http://nakco.com/Control.Wiring...Wiring Guides Boiler Wiring 18 Programmer Wiring 19 Valve Wiring 20 Frost Thermostats 21 Fault finding Wired Sundial Y Plan 22 - 23 Wired Sundial S & S Plan Plus 24 - 25 ... The wireless versions also control zone valve applications that provide time control of stored domestic hot water and two heating zone applications (S Plan Plus).Jan 3, 2012 · Wiring white rodgers zone valves. Hi I have a new weil mclain cga-4 standing pilot boiler and 2 white rodgers 1311-102 zone valves. How do i wire the zone valves to the boiler? The boiler has 2 wires coming from the transformer relay R and G terminals marked 24 v thermostat. Is this where i wire the wires from the zone valves? The wiring at the thermostat was identical to FIGURE 1, with a spare green wire. The zone valve controlling that zone looks like this (FIGURE 3), after my rewiring, with annotations based on the subsequent diagram (FIGURE 4): FIGURE 3. FIGURE 4. I don't want to brag, but this has been working out perfectly for the past couple of months.Jun 10, 2022 · Summary. In a central heating system, zone valves regulate hot water distribution to the building's different areas (zones). They are often preferred for their extra comfort as well as energy savings. These valves exist in various shapes and sizes, but ball valves with electric actuators are a popular choice for this application. 5). Attach a “spare” wire to the C terminal – such as the Black wire for C or Common. 6). Attach the Light Blue wire to the X/Aux terminal for Auxiliary heat. 7). Attach the Dark Blue wire to the B terminal for Reversing Valve for Heating. 8). Attach the Orange wire to the O terminal for Reversing Valve for Cooling. Thermostat Wiring ...

You'll use that for your commons. (a 75VA transformer will do just fine to power both stats.) You'll need 2 24V coil, spst relays. Parallel to the valves, you'll connect the relay coil. The transformer relay kit for the motor will then connect to both relay contacts in parallel. (using the wires that used to go to the thermostat.)

The load is now a boiler. (See Figure 4, page 20.) This wiring diagram shows 120 V coming from L1 of a circuit breaker, through a switch, powering a boiler control and returning through L2, back to the neutral bar of the circuit breaker box. This is fine if the boiler is 120 V. However, most gas boilers you will be working on have 24-V controls.Wire it in on the basis that the circulator pump turn on when there is a call for heat from either the zones or the boiler. But this would involve connecting a SPST relay to the gas control valve on the boiler which gets 24v when the boiler is firing. Upvote. # 4. 11-27-16, 12:20 PM.You'll use that for your commons. (a 75VA transformer will do just fine to power both stats.) You'll need 2 24V coil, spst relays. Parallel to the valves, you'll connect the relay coil. The transformer relay kit for the motor will then connect to both relay contacts in parallel. (using the wires that used to go to the thermostat.)Hot Water Boiler Piping Zone Valves Wiring Diagram Quality 1. Dakota Supply Group 24v 3 4 In Npt N C Zone Valve. Honeywell Motorised Valve Clearance 50 Off Www Ingeniovirtual Com. Control A 3 Wire Zone Valve With 2 Thermostat Geek Wisdom Com. China 2 Port Motorized Zone Valve 5 Wire Replaces Honeywell V4043h Photos …Fluid Temperature Range: 50 F to 200 F. Electrical Connections: 18" leads. Power Consumption: 7.7 VA. Nominal Timing: 15 sec. Valve Action: Spring return to close. Dimensions: 4" high x 3-1/2" wide x 2-3/8" deep. Auxiliary End Switch: SPST. End Switch Rating: 50 VA pilot duty @ 24 V. Static Pressure (psi): 125 psi.Power Open/Power Close Zone Valves Play length: 4:15 minutes. Play video. How the valve is constructed, how to wire to a control, how the valve prevents mechanical hysteresis wear when used as a modulating valve, and how to apply the valve in a heating or chilled water system. Manifolds. ... Boiler Trim Kits Play length: 2:43 minutes.White Rodgers zone valve questions. I just bought a home with a gas boiler with 3 zone valves. They are 1311-102 so they are a 3 wire power close/open valve. Meaning most thermostats are not compatible as they can't signal the valve to close. So, I bought a 2 wire 1361-102 valve and installed that on the my main floor valve.

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After removing and labeling all wires, unscrew the old thermostat wall plate and mount the new thermostat's wall. plate. You can re-connect the wiring after mounting the new thermostat's wall plate. If we recommend placing a wire in a terminal, do not move it to another terminal if we address it later in the guide.In this HVAC Training Video, I show a Taco 6 Zone Switching Relay Control Panel, Wiring of the Switching Relay, and a demo of how it functions and controls t...Boilers - Home Heating Steam and Hot Water Systems - C-Wire for Nest Thermostat with WeilMclain Ultra 155 Boiler/13 ZoneValve - Hi, WeilMclain Ultra 155 Boiler and 13 Honeywell Zone valve installed in my house. I have most of the nest thermostat (Learning and Nest E) and all of them are working fine without havingThe most professional way to wire a Honeywell V8043E Zone Valve using flex conduit by jerry. Updated diagram at end of video. http://nakco.com/Control.Wiring...Zone 2 active. The wires highlighted in red are connected to 230V when zone 2 is active. The thermostat contact closes, which connects 230V to the output terminal 3. This is connected in the wiring centre terminal 8 to the zone valve, the valve motor opens the valve and a switch inside connects grey and orange together.How to wire a Honeywell V8043E 1012 Zone Valve Perfectly by jerry. Note: Updated diagram at end of videoWiring drawing here: http://nakco.com/Control.Wiring...Page 2 CGa Series 3 Gas-Fired Water Boiler — Boiler Manual How it works . . . ① Control module The control module responds to signals from the room thermostat and boiler limit circuit to operate the boiler circulator, pilot burner, gas valve and vent damper. When room thermostat calls for heat, the control module starts the system ... TACO ZONE CONTROLS WIRING GUIDE Pages Switching Relays – Single Zone Wiring 2– 4 Switching Relays – Oil Boiler Wiring Safety Notice –5 Switching Relays – NONEXP Connected Together with Priority 6– 9 Switching Relays – EXP Connected Together with Priority 10 – 13 Switching Relays – Multiple Indirect Hot Water Heaters 14 – 15 ….

for Honeywell V8043e1012 Zone Valve, 40003916-026 24Vac 50/60Hz Replacement Head 2-Way 4-Wire with end Switch,Compatible with Honeywell V8043E 5000 Series, Zone Valve Motor for Boilers,3 YA Warranty. $5899. FREE delivery.5). Attach a "spare" wire to the C terminal - such as the Black wire for C or Common. 6). Attach the Light Blue wire to the X/Aux terminal for Auxiliary heat. 7). Attach the Dark Blue wire to the B terminal for Reversing Valve for Heating. 8). Attach the Orange wire to the O terminal for Reversing Valve for Cooling. Thermostat Wiring ...This is how a Zone Control System for a Boiler Works, what the functions are, how to wire it, and what the signal voltages and relays do!Tool List- https://...A zone valve is used to control the flow of water or steam in a hydronic heating system.You want to use zone valves in heating systems where you will be heat...Good morning. My navien combo boiler is not calling on all 3 zone valves to open. I have power to the valves and the thermostats but not from the zone valve connections with the boiler. Could there be … read moreHow to wire a system circulator to a taco zone valve control (zvcZone wiring pumps taco multiple heating relays valves boiler pump system Taco zone valve wiring schematicWiring valves. 27 taco zone valve wiring diagramZone valve wiring manuals installation & instructions: guide to heating Weil mclain 571 transformer relay flow schematron ...Sep 23, 2020 · In this video, I use a blank "pictorial" diagram and walk you through the wiring and sequence of operation of a simplified oil fired boiler using an L8182D A... The zone valve has 2 teminals marked end switch. These 2 wires, and only the 2 marked "end switch" can be taken loose from terminals and tied together to see if the problem is in the motor. After tied together, make sure zone valve is calling for heat. If pump comes on then, bad zone valve operator.Hydraulic relief valves limit the maximum system pressure to protect system components. The valves also limit the maximum output force of the hydraulic system. Although they have a...ZONE CONTROL BY VALVE: The SYSTEM 2000 Boiler is designed to provide multi-zone control of the heating system and optionally can supply domestic hot water. Energy Kinetics recommends and supplies two wire, full port, 24-volt zone valves for control of each heating zone. A system with a single heating zone still requires a zone valve to provide ... How to wire a zone valve on a boiler, How to replace a zone valve on a boiler system. See how to replace just the power head without opening the water circuit. To see more how to videos be sure ..., I can give you a general idea but as for what the valve controls is up to the install. On a basic Honeywell zone valve there are four leads two yellow and two red. The red are an end switch that makes when the valve is fully open, so if you check them with a continuity tester they will only be made when the valve is driven fully open., Step 5 - Removing the Zone Valve. The zone valve will be bolted onto the pipe. When it's safe to do so, the zone valve can simply be unbolted and removed from the line of pipe. Be careful when doing this because the valve can stay hot for some time, even when the boiler is shut off. Use the screwdriver to remove the electrical connections from ..., The most professional way to wire a Honeywell V8043E Zone Valve using flex conduit by jerry. Updated diagram at end of video. http://nakco.com/Control.Wiring..., We frequently wire several zone valves or zone pumps to one transformer in a parallel circuit. Again, the transformer is the power supply. The zone valves or zone pumps are loads. Each zone valve has its own switch, which is a thermostat. Get a room full of plumbers together and ask, “How many zones valves can we put on a transformer?”, Sep 23, 2020 · In this video, I use a blank "pictorial" diagram and walk you through the wiring and sequence of operation of a simplified oil fired boiler using an L8182D A... , Ensure that all wires are properly connected and tightened in the 571 2 zone valve. Use a screwdriver to secure any loose terminals and ensure a solid connection. Loose connections can cause intermittent or complete loss of power, resulting in heating or cooling issues. 2. Verify power supply., 1361 103 Emerson White Rodgers 1 Sweat 2 Way Normally Closed Zone Valve Amre Supply. Zone Valve Wiring Manuals Installation Instructions Guide To Heating System Valves Inspection Repair. Packaged Gas Electric Unit 3 5 Ton Belt Drive Ultra Low Nox Light Commercial Dbg Models Installation Instructions. 1361 103 Emerson White Rodgers 1 Sweat 2 Way ..., Need some advice on wiring boiler zone valves. Steve6662 Member Posts: 6. December 2020. I have a boiler system I'm trying to wire that hasn't been wired correctly for quite some time. I'm a DIY'er but have some experience with HVAC. I have a system with 3 thermostats and 3 zone valves. 2 zones having 8043E1012 4 wire valves, and 1 Taco 3 ..., The wiring diagram for a 3-wire taco zone valve system includes a thermostat, a circulator pump, and multiple zone valves. Each zone valve is controlled by a separate thermostat and has three wires - a power wire, a common wire, and a control wire., The main thing that's got me hesitating is that the diagrams I've seen show two separate 120v to 24v transformers supplying power for the circuit connecting the zone valve end switches to the boiler and the circuit connecting the zone valves and the thermostats. But from what I can see, both of those circuits are connected to the 120v ..., either a motorized zone valve or a circulator. 1. Separate circulator. The recommended way to provide adequate flow through the water heater heat exchanger is to use a separate dedicated circulator. This option may be used even though the heating system utilizes zone valves. 2. Zone valve. If a zone valve is to be used, a flow rate of 3 to 5 ..., Put a joint box with 6 connections next to the motor valves and take the stat wires and motorised valve wires to it. Take a 4 core from the boiler to the box. Connect from boiler, Ls to common from both stats and both grays from valves. Ns to N from valves and stats if present., Nov 10, 2020 ... In this video we explain how to wire an Ecobee smart thermostat to a Edwards engineering 3 wire zone valve using a rib relay. HTTPS://WWW., Learn how to quickly wire in multiple zone valves on a boiler in 1 minute. 5 Step Cheat Sheet: https://i.postimg.cc/wxbyRtMV/Zone-Va..., Zone Pump - Zone Valve Boilers & Combi Boilers - NAVIENAvailable online at: https://thefurnaceoutlet.com/, The Taco Zone Valve Controls should be used in coordination with 2, 3, or 4-wire zone valves. They feature universal thermostat compatibility, and their simple layout eliminates problems caused by incorrect wiring. External indicator lights give instant diagnostic feedback and reduce installation time. Taco 550 Series Heat Motor Zone Valves., The thermostat wires typically consist of two sets: one for the zone valve and another for the boiler. Connect the corresponding thermostat wires to the appropriate terminals on the zone valve. Use wire nuts to secure the connections. Step 5: Connect the transformer wires. The transformer wires provide power to the zone valve., Take it one step at a time. 1. One side of the 24 volt side of the transformer.. call it the "hot" side feeds 1 terminal (R) on each of your two thermostats. 2. the "neutral or common" side of the transformer feeds terminal #2 on both zone valves and goes to one of the TT terminals on the boiler., How do you wire a zone valve? What is a zone valve? During this zone valve wiring for beginners video, I simplify the confusing and overwhelming task of wiri..., That is your C connection point. Yes , I have all three #2 terminals on Taco zone valves tied together to one side of the transformer. I connected C -common wire to that wire-nut to C terminal on Nest but it keeps giving me heat delay info message on the display. It recognize new installation with a common wire though., The Chevrolet 5.7-liter (350-cubic-inch) engine employs an overhead valve design that requires occasional maintenance. Adjusting the clearance between the valve stem and rocker arm..., Learn how a boiler wiring diagram with zone valves can be used to control the heating system in different areas of your home. Understand the basic wiring setup and find …, How to connection the High volt & low wiring with Taco zone valve controller for the Weil-Mc Clain model # XXXXX 97 + 110 gas fire boiler to system. And the old system has three Honeywell zone valves …, Oct 9, 2020 ... Gas Venting: Part 1 - Code Requirements for Vents and Chimneys. Mathematic Plumber · 48K views ; 4 Wire, 5 Wire Honeywell Zone Valve Wiring, ..., The Chevrolet 5.7-liter (350-cubic-inch) engine employs an overhead valve design that requires occasional maintenance. Adjusting the clearance between the valve stem and rocker arm..., The old owner have installed 4 Honeywell V8043E1012 zone valves to a Hydro therm HC 165 gas boiler. For some unknown reason he had all 4 zone valves connected to only one thermostat controlling the whole house. I want to wire them properly having a separate thermostat for each zone. The wiring the previous owner did is a nightmare., Zone Valve Wiring Manuals Installation Instructions Guide To Heating System Valves Inspection Repair. 2 Thermostat Zone Valve Wiring Heating Help The Wall. Hot Water Boiler Piping Zone Valves Wiring Diagram Quality 1. Combination Boiler With 2 Heating Zones 230v Switching. Domestic Central Heating System Wiring Diagrams C W Y S Plans., INSTALLATION INSTRUCTIONS. TYPE 1311. HYDRONIC ZONE VALVES. (3 WIRE) The schematic shows the valve in the closed position. As the thermostat calls for heat, the valve motor is energized and begins to open the valve. Soon thereafter side "A" of motor switch makes with the holding contacts., Learn how to quickly wire in multiple zone valves on a boiler. Includes 5 Step Cheat Sheet:https://i.postimg.cc/wxbyRtMV/Zone-Valve-Cheat-Sheet.pngFlow Path ..., Find out if an ecobee thermostat is compatible with your 2- or 3-wire heat-only boiler/furnace system, and what you can do to make your system compatible if it isn't directly compatible. ... Photos of the wiring at any zone valves or zone boards, including any splice points; The make and model of each zone valve and/or zone boards; Good to know:, Ensure that all wires are properly connected and tightened in the 571 2 zone valve. Use a screwdriver to secure any loose terminals and ensure a solid connection. Loose connections can cause intermittent or complete loss of power, resulting in heating or cooling issues. 2. Verify power supply., Install wiring and electrically ground boiler in accordance with requirements of the authority having jurisdiction, or in absence of such requirements the National Electrical Code, ANSI/NFPA 70, and/or the CSA C22.1 Electric Code.