Toledo
New Member
I have a question related to relays and how to configure them to activate my boiler and or my pump - I wonder if you can help me out?
I have a room stat with a connector block labeled left to right Rc Rh (jumpered together) B O Y W G C
I have a 24v transformer which is connected to Rh (hot wire) and C(ommon) - C is jumpered to W and Y All I need is for the system to run either the boiler and pump hot water or just the pump on its own to pump cold water around the system.
I have a Totaline relay P283-0370 and a White-Rodgers 90-293Q relay (the supplier didn’t have 2 of the same relays available).
From the 90-293Q relay I have terminal 1 connected to the 'Y' port at the room stat and the 'W' port connected to terminal 1 on the P283-0370 relay . The pump is connected to #2 terminal on both relays. The boiler to terminal 5 on the 90-293Q relay. A 120V supply to #4 terminals on both relays and also the 120v/24V transformer. The #3 terminals are 24V supplies and connected together and on to the common side of the transformer which is connected to the C(ommon) terminal on the room stat - The live 24v terminal (hot) is connected to the Rh terminal at the room stat. However when it is wired this way all I get is the pump only running constantly and no control is evident from the room stat.
If the pump and the boiler are wired together I simply cant run the pump without the boiler lighting without physically disconnecting the boiler.
The situation is that if the pump operates then the boiler ignites so I have to isolate the power from the boiler when I want it to run cold so it can’t ignite.
I need to either have heat on which is pump and boiler or cold which is pump only. Do you have any suggestions as to how I can make this work?
The Word doc I have all of the digrams in is 127Kb and too big to post here but I can mail it, if required, direct I guess
I have a room stat with a connector block labeled left to right Rc Rh (jumpered together) B O Y W G C
I have a 24v transformer which is connected to Rh (hot wire) and C(ommon) - C is jumpered to W and Y All I need is for the system to run either the boiler and pump hot water or just the pump on its own to pump cold water around the system.
I have a Totaline relay P283-0370 and a White-Rodgers 90-293Q relay (the supplier didn’t have 2 of the same relays available).
From the 90-293Q relay I have terminal 1 connected to the 'Y' port at the room stat and the 'W' port connected to terminal 1 on the P283-0370 relay . The pump is connected to #2 terminal on both relays. The boiler to terminal 5 on the 90-293Q relay. A 120V supply to #4 terminals on both relays and also the 120v/24V transformer. The #3 terminals are 24V supplies and connected together and on to the common side of the transformer which is connected to the C(ommon) terminal on the room stat - The live 24v terminal (hot) is connected to the Rh terminal at the room stat. However when it is wired this way all I get is the pump only running constantly and no control is evident from the room stat.
If the pump and the boiler are wired together I simply cant run the pump without the boiler lighting without physically disconnecting the boiler.
The situation is that if the pump operates then the boiler ignites so I have to isolate the power from the boiler when I want it to run cold so it can’t ignite.
I need to either have heat on which is pump and boiler or cold which is pump only. Do you have any suggestions as to how I can make this work?
The Word doc I have all of the digrams in is 127Kb and too big to post here but I can mail it, if required, direct I guess