Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-26-2011, 04:53 PM   #1
Member
 
Join Date: Dec 2008
Location: St. Louis, MO
Posts: 173
Share |
Default

TACO 503 switch relay- dry contacts for boiler?


I am wiring my radiant heat system now. The system is a "homerun" system with a primary circut and 3 secondary circuits, each with their own circulator and thermostat.

The boiler is a high efficiency weil-McClain. It can control up to 3 circulators. Because my set-up has 4 circulators, I have a Taco 503 switch relay to control the 3 circulators for each zone, and pair each up to the appropriate thermostat control (one for each floor of the house).

The problem is that I'm not totally certain how to connec the switch relay to the boiler's controller. There are leads "X1" and "X2" near where the 120VAC input is. On the wiring diagrams, these are meant to attach to the "TT aquastat controls". The boiler input from any source must be a dry contact (like from a thermostat).

I've wired these leads to the boiler controller assuming they are dry contacts. However, I'm not sure this is correct and don't want to fry the system. Anyone have any experience with this?

Also, does anyone know if I can use the 24 VAC leads on the TACO 503 to power an i-series 4-way mixing valve?

THANKS!

gbwillner is offline   Reply With Quote
Old 11-26-2011, 05:57 PM   #2
An old Tradesmen
 
Join Date: Oct 2008
Location: PA
Posts: 24,381
Default

TACO 503 switch relay- dry contacts for boiler?


X1 and X2 are dry contacts.

Don't know the draw of the mixing valve to answer.

beenthere is online now   Reply With Quote
The Following User Says Thank You to beenthere For This Useful Post:
gbwillner (11-26-2011)
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Generator Transfer Switch Trouble wgramer Electrical 23 11-12-2011 07:23 PM
confused on switch replacement fullpint Electrical 6 07-11-2011 08:39 AM
PTAC On-Off is in the Breaker Box... John Harris HVAC 36 06-23-2011 08:01 AM
Replacing a bathroom fan switch cmacjr22 Electrical 4 11-04-2008 06:14 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.