Thank you for this! However what I’m not clear about is what to do with the L1 and L2 wires in the box on the boiler and also the circulator and DHW wires on the boiler.
HI I HAVE SR504-4 Switching Relay, SAME ONE YOU USING BUT I HAVE 4 ZONE AND NAVIEAN NFC 200 COMBI BOILER. QUESTION IS WHICH WIRE I SHOULD CONNECT FROM RELAY?
I have a setup similar to yours. Do you have a nest hooked up to it? If so, can you show how to? I bought two nest Es and I have a 2 wire setup ..with an unused blue wire in the wall...and I'm trying to figure how to use that blue and connect to taco for c wire power
I have a taco SR503. It’s really cold in Massachusetts the past few days. If the power is lite up green and zone 1 2 3 are red, is that bad?? Thank you
It depends on your boiler, but your boiler needs to know when to turn on and off. so it needs a switch from your relay board. For my boiler, it's the purple circle labeled E imgur.com/ixhkrF7
@@guest00101 what if its a hot water tank though? shouldnt it only be on when water is running through it like when you open the hot water tap on a sink?
On your Taco Controller, does your 120 V supply come from the boiler (switched) or is it straight from the main? I have the SR503 that i intend to hookup to 2 zones and a primary running with a Navien boiler.
Hello, the green LED that usually lights up on the "POWER" part turned off and now I currently don't have any heat in the house. Do you have any suggestions on how i can fix it?
