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MANUALS (3)
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Product Highlights
Description
Features:
- External Indicator Lights
- Switchable Priority
- Simplified Wiring
- Fully Enclosed Snap-Out Relays
- Compact Design
- Fuse Protected
- 100% Factory Tested
- Isolated End Switch
- Contractor Friendly PC Board Layout
- Universal Thermostat Compatibility
- UL and CSA Approved
- 24 Volt Power Input or Output Terminal
- Extended 3 Year Warranty
- Made in the USA
Specs
| Application: | Zoning |
|---|---|
| Number of Zones: | 1 |
| Width: | 4-1/4" |
| Height: | 5-1/4" |
| Depth (Inches): | 2-3/4" |
| Amperage: | 7.2 |
| Power Method: | 120 VAC Input |
| Voltage: | 120v |
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Product Reviews
Most Liked Positive Review
Zones!
Most Liked Negative Review
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Fairly good. Could be better.
Broke down in the first season
I would not buy again
This zone controller is what i needed
Good product
Solid product.
Works great
Best product
6 Zone Relay for Circulator Pumps
I would buy this again
Great price and fast shipping.
Product Q&A
53 QuestionsQ: I am getting ready to purchase radiant heat parts for my garage I would like to use a taco 3 speed pump ,tekmar 507 thermostate would this relay operate the pump?
Asked by needin help 13 years ago
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Verified Reply- PexSupply StaffYes, this relay would interface the thermostat with the pump and the boiler when a call for heat is made.
Q: I have a three zones with Honeywell Zone Valves V8043 E 1012. Are they compatable with the taco 4 zone relay
Asked by hup23 14 years ago
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Verified Reply- PexSupply StaffYes, they are.
Let me start by saying that I'm not a professional plumber! What voltage thermostats do you have? If you have low voltage thermostats they are 24 volt (AC - alternating current). If you have line voltage thermostats, they are 110 volt (AC). The SR-504 is generally used with low voltage thermostats to switch on/off a line voltage device, like a circulator. Your zone valves are 24 v. devices. If you have low voltage thermostats, please reference the manual (see link below) for typical wiring instructions. http://s3.pexsupply.com/manuals/***.****97/39247_PROD_FILE.pdf If you have line voltage thermostats, I'm not sure how to proceed. Good luck. Joseph
Their 2 types of Taco Relay for 24 v & 120 V you want 24v for zone valve control, And 120v for pumps. with a thermostat in the middle for control.
yes
It should be but I'm not completely sure
The Taco zone relay controller is designed to control a 120v appliance such as a pump. It has provisions to connect a separate thermostat to each zone and control a pump in that loop. If you have three zone valves then you have only one pump in the system and don't require the controller
yes
Q: I currently have two zones that I am replacing. Can I buy two of these zone relays or is one sufficient? The two zone relay is more expensive than two single zones would it work to use two 1 zone relays?
Asked by AY 14 years ago
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Verified Reply- PexSupply StaffIt will work if you use two seperate 1-zone relays.
Q: I have this 3 Zone switch and it controls two zones currently, my radiant floor heat in an upper bathroom and then the main zone with radiators in the entire house. I want to add another in floor heat zone that will use the same circulator/mixing valve as the upper bathroom. I was planning to add two zone valve actuators - one on the upper bathroom and one on the new zone (both will be on separate thermostats). Can I do that with this product or will I need something else to control the valve actuators? Does it matter if the valve actuators are 2, 3, or 4 wire? As a follow up the circulator for the radiant heat has an actuator on the mixing valve - can this product control that as well? Thank you!
Asked by asnyder80 14 years ago
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Try using a zone control module, e.g. Uponor A3030003, into which you can plug your two radiant zones' thermostats. This module (or modules, depending upon how many wires you want to run) has controls for the actuators, and an output which can then be connected to your existing zone switch. Oh, and make sure your radiant zone pump can handle the new load.
use taco zvc panel for zone valves, buy the correct panel for number of hot zones for radiant needed, also need sr501 for running pump for radiant heat circuit
Hi , it sounds like your gonna have a total of 4 zones cause you have 2 and or adding 2 . If thats correct then you will need a controller that can handle 4 zones not three as the sr503. you can add therms to any zone you like with this type controller or the 4 zone ..Just keep in mind that the sr 503 is for zone valves use only depending on what controller you use 3,4,5 zones etc . The SR503 can only control 1 circ pump , I believe you are only using 1 currently which is fine.. Hope this helps.
You will need separate control for actuators and then use end switch or dry contacts on that control to go to the existing TT where the current bath goes now.
Q: Where can I get spare fuses for this?
Asked by Pilotattitude 14 years ago
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Radio Shack or Electrical Supply House.......73Bob.
Your local hardware store or auto parts shop should carry them.
Any automotive parts shop or radio shack will have what you need. walter
I would bring the fuse to an auto parts store and see if they can match one up for you. John White Process Engineer
Q: Can this relay be installed in any position or must it be installed upright... Thanks
Asked by Mondo 14 years ago
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This is an electronic control so it technically can be installed in any direction (except that the back must be against the wall). That said, it is slightly better to install it in the intended direction so that lights are visible and labels are readable.
It will function in any position
Any position is fine.
Any Position.
It can be installed in any position.
Installing in any position will be fine.
It can be installed in any position. Phelps Clarke
you may install in any position as long as you can get cover off
Q: I am setting up a 3 zone system (a pump for each zone). It is a closed loop system, so there is a heat exchanger with a separate pump on the domestic side that will provide heat for the radiant side. I will need this 'fourth' pump to loop hot water through the hear exchanger whenever heat is needed. How do I get that 4th pump to come on whenever any of the three zones call for heat? Thanks
Asked by Homeowner Dan 14 years ago
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Use a fan center (coil/relay) wired to each zone end switch, you can also use transformer to power valves
TT (X X) on the SR-503 control will close a dry contact to run (trigger) an additional relay for the "boiler" circ pump. I recommend using a Taco 501 relay to keep the installation simple. Hazard Stewart Newport Geothermal, LLC
Use an SR 501. Take the TT out from the SR503 to the thermostat input on the SR 501. The output from the SR 501 can power the fourth pump and turn on a boiler.
Have you looked at the Taco Zone Control Modules (e.g. ZVC403-2)? These normally are used to control zone valves, but can also be wired to drive a switching relay. The modules contain their own relays to control the 'boiler' pump, which is the 4th pump in your scenario.
I'm not 100% sure what you are doing, but it sounds like you are using a domestic hot water heater to heat an in-floor (radiant) system. If you are using the pump controller shown in the picture below, there should be an output to turn the boiler on. Just wire your 4th pump up like it were the boiler. John White Process Engineer | Pioneer Surgical
When any of the zones calls for heat, the "solated end switch (X1 and X2) will start the boiler" - that is, the wires from X1 and X2 go to the "TT" on the Aquastat controller to turn on the boiler. You may be able to run wires in parallel from X1 and X2 to your 4th pump so it also goes on when any of the zones go on. (Caveat - I am a DIYer!)
There is a relay contact that is enegized whenever any of the zones are activated. This set of relay contacts can be used to power the pump that puts hot water into the heat exchanger.
Do you have a relay for the 4th pump? You will need it for the radiant side. You can have this setup to turn on when the other switch on the main heat unit.
If you are using a taco or smiler relay us the "TT" thermals and hook up a 24 volt coil relay to fire the heat exchanger pump. I like the MacDuffco MDR2400 (SPDT) relay in this application.
there are many ways you could do this and it will really depend on your design. You can have a temperature sensor, you could have a flow sensor or you could have your heater control that last pump. I do not have this design in my house but I would first try to define what you want the heat exchange loop to monitor. I tend to stay away from heat exchanges as they are inefficient and there is probably simpler way to design.
Q: my question is related to wiring my 3 zone valves(erie w/wire leads, 2 black + 2 red) to my relay switch. i also have a thermostat for each zone. But i only have 1 pump to run the 3 zones. how is all this wired in???? thanx in advance.
Asked by gordie 14 years ago
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Verified Reply- PexSupply Staffit sounds like you need a three-zone zone valve control rather than a three-zone switching relay. Switching relays are meant for applications that use a separate circulator pump for each zone and do not incorporate zone valves. Installations like yours (that use a single circulator for the entire system along with an individual zone valve for each zone) call for a zone valve control. The Taco part that we'd recommend is model ZVC403-2.
Q: I want to control one extra zone pump(for my garage) which is in another location than the rest of the system. Do I need this switch and a thermostat (which one?) or is there a simpler and more economical way? Thank you
Asked by HenrikB 14 years ago
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Verified Reply- PexSupply StaffIt would probably be easiest to use this control along with a low-voltage thermostat. It's also possible to wire a line-voltage thermostat in the electrical line to the circulator, but this is more complicated and would probably require the assistance of an electrician.
Q: I WOULD LIKE TO CONTROL 5 PUMPS WITH AN SR506-2. THE TOTAL DRAW FROM THE PUMPS IS 20.31 AMPS BUT THE UNIT IS ONLY RATED FOR 20AMPS. WILL IT BE OK TO USE THE SR506-2 OR SHOULD I USE A 2 AND A 4?
Asked by BOB 14 years ago
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Verified Reply- PexSupply StaffWe recommend that you use two SR503-EXP models. This will allow you to link the two switching relays together.