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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.
This product was discontinued by the manufacturer.
Taco SR504-EXP Switching Relay Instruction Sheet
Taco SR504-EXP Switching Relay Submittal Data
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.
Amperage, or amps, refers to the amount of electricity flowing through the wires.
Taco Switching Relays combine clearly-labeled PC board layouts with advanced features that allow you to completely customize your system. And whether you're using basic priority switching, Taco Plug-In PowerPort Cards or add-on power controls, tailoring the system has never been easier. External indicator lights give you instant diagnostic feedback, making service calls or new installation start-ups a snap. All switching relays are UL listed, use standard "ice cube" replaceable relays and are compatible with conventional and programmable thermostats. For larger jobs, switching relays can be expanded up to 20 zones with priority. With the exclusive Taco PowerPort Plug-In Cards, you can easily add such features as post purge, priority protection and pump exercise. Any expandable switching relay can also interface with the Boiler Reset Control and Injection Mixing Add-On Power Controls. Mix-and-match as needed to customize the system. Features include:External Indicator LightsSwitchable PrioritySimplified WiringFully Enclosed Snap-Out RelaysCompact DesignFuse Protected100% Factory TestedIsolated End SwitchContractor Friendly PC Board LayoutUniversal Thermostat CompatibilityUL and CSA Approved24 Volt Power Input or Output TerminalExtended 3 Year WarrantyMade in the USA
(based on 12 reviews)
of respondents would recommend this to a friend.
Reviewed by 12 customers
Displaying reviews 1-10
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best and easy to connect product
By al ca
Comments about 4 Zone Switching Relay w/ Priority:
really easy to connect , first time I connect one so I did it you can do it
Bottom Line Yes, I would recommend this to a friend
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(1 of 1 customers found this review helpful)
I was looking for simplicty with future
from Newport, RI
Comments about 6 Zone Switching Relay w/Priority & 3 Powerports:
I needed four relays and had very little space. I also wanted to have room for two extra zones for an unbuilt addition. Taco had the perfect solution with this six relay expandable unit
(0 of 1 customers found this review helpful)
from North Adams MA
Easy hook up... less mess and clutter of wires.. Works as intended!
I would buy this product again.
from West Branch MI
Very dependable and eazy to install.
Works great. Solved cold shower problem
from Gloucester, MA
Installed this TACO 6 zone control unit with priority zone to replace five TACO individual controllers. Having the priority zone hooked up to the water heater solved my problem with loosing hot water in the shower if one of the heating zones was getting activated. I've also been able to sell the used controllers to offset the cost of the 6 zone controller. The unit did arrive poorly packaged for shipment though. The relays came out of their sockets during shipment and were bouncing around inside, standoff on the circuit board was broken. The unit works fine though, no problems, just very poorly packaged.
Would buy again
from New York
Very functional relay
Seems well made
I used this unit in my radiant heating system and it worked great and seems well made and was easy to hook up. Would recommend this.
Great Addition to my Home Heating System
from Guilford, CT
This controller gives me the feeling that my home heating needs are finally being met. My home has never been so comfortable, since I bought it with a Rube Goldberg type two-zone system. Fixed all my issues. The documentation was a little hard to follow...I had to do a lot of additional research to make sure I was wiring things properly.
This panel is great!
By Chuck, heating contractor
from Topeka Kansas
Very slick panel. Makes entire installation look more professional. I have used these before but I had a minor problem this time(my mistake in wiring) and called Taco tech support, they really knew their product and got me back on track.
from South Dakota
Comments about 3 Zone Switching Relay w/Priority & 3 Powerports:
Used on my replacement cold start boiler that had only one pump input on control board. I have two pump controlled zones and wanted to able to add indirect water heater with the 3rd zone priority in the future, so it filled the bill. Also has a lot of expansion capabilities that I probably won't every use, but who knows..
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