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Location: 185 Price Parkway, Farmingdale, NY 11735
Hours: 8:00AM - 7:00PM, Mon - Fri
This product does not comply with the "Safe Drinking Water Act,"
which requires that products used in any system providing water for human
consumption (drinking or cooking) to meet low-lead standards.
Please check the box below to confirm you are aware of that this item is for non-potable water applications only.
This product will NOT be used in the installation or repair of a potable water (human consumption) application.
You must agree to this statement in order to purchase this product.
Do not use this item for any installation or repair of potable water applications.
This product does not comply with the "Safe Drinking Water Act,"
which requires that products meet low-lead standards in order to be used in systems providing water for human consumption (drinking or cooking).
This item is for non-potable (non-human consumption) water applications only.
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Zones are the number of areas that you want to control independently of each other. If two rooms can be controlled together, they can be one zone; if they need to be controlled separately, they should be separate zones.
Voltage, or volts, is a measurement of the difference between two electric fields (in heating terms, the difference between the Earth's electrical field and the electricity running through your wires).
The Taco SR503-4 Switching Relay is the best choice for all your zoning needs, with advanced PowerPort Cards, external diagnostic lights, switchable priority and contractor friendly PC board layouts. Combined with the time proven reliability of the 00 family of circulators and thermostats, total system integrating is achieved. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation start-ups.
(based on 10 reviews)
of respondents would recommend this to a friend.
Reviewed by 10 customers
Displaying reviews 1-10
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another easy install
By mike the munk
Comments about 3 Zone Switching Relay:
easy install good price top end quality very nice
Bottom Line Yes, I would recommend this to a friend
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Ezzzz of installation
By Dirt Mover
from North Eastern Pennsylvania
Very easy to understand installation directions, works exactly as described, everything contained in 1 compact unit.
from Hopkinton MA
Had to add 2 zones, The taco instructions were great. Just remember that if your adding onto a system that has a domestic HW priority already you will need a zone for that... Thats why I had to get a 3 zone controller. Pex Supply is the best company I have ever bought from, FREE SHIPPING NEXT DAY..Great prices, Nice!
(0 of 1 customers found this review helpful)
this switching relay was a breeze to ins
By handyman steve
from point pleasant,nj
this switching relay was a breeze to install. i replaced a pair of honeywell mechanical contacts and ended up putting in a third zone for a 4 loop radiant heat zone. great price, great products. taco makes top of the line equipment. pex supply has great prices and service, way better than going to a local supply house. they are doing the plumbing business right.
taco 3 zone switching relay
By JCM Constr.
from Bethany, Ct.
First time installing, easy to wire, straight forward and it works great. I like the lights that tell you what zone is running at a glance. I mounted mine away from the boiler on the chimney at eye level.
It came with instructions. Works great
very easy to work with
from edgewood iowa
used this for infloor system in a home and it worked great and made the job alot simpler to install thermostats boiler and pumps
Best way to go for zone circulators
from Freehold NJ
If You are using zone circulators and a zone boilermate, this is the easiest set up. It will work flawlessly.
looks great and easy to install
from moosup, connecticut
This product performs great and did the job as expected replacing a similar product that got burned out
definitely the right product
By Doctor Demento
from Wallkill, NY
Used this to run multiple circulators on a cold start boiler. The right product for the job
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At SupplyHouse.com, our goal is to bring you the highest quality plumbing, heating and HVAC supplies at competitive prices. Our product catalog includes PEX Plumbing Supplies, Radiant Heat Supplies, VisionPro Honeywell Thermostats, Taco pumps and mini-split air conditioners. If there are items you are looking for but can't find on our website, please contact our Customer Service Representatives & we will do our best to find what you need.
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