“This is a high quality switch. We are using it with our infloor radiant heating system to separate the zones. Each pump is activated by a dedicated tstat activating a specific zone pump. This also has the ability to set a priority zone what will override the call from other zones. Great for DHW. Be aware that some boilers have their own DHW priority logic even when using an indirect fired water tank. In that case you can use priority for a specific designated zone.”
“Replaced an old controller with this Taco SR504-EXP-4 cone controller. In addition Taco has one of the best technical support teams for their and other makes of hydronics/heating & cooling products.”
“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.”
