I am trying to figure out how to use the Taco SR504-exp-4 Switching Relay with my Alpine 105 gas boiler due to the changing from one zone to 3 zones. I am not very clear some terms on the instructions. Please help me. My system doesn't have a hot water sub-system attached. It is a winter water heating only system.
System pump ---- the pump for individual heating zone.
DHW pump ---- the pump for the hot water sub-system(for shower, kitchen, not for the winter water heating system)
Boilder pump ---- the pump close to the boiler and help the water circulating to the boiler
Primary pump ---- the boiler pump?
Priority ---- for DHW only?
For the wiring, I have modified a sample wiring diagram coming with the Burnham Alpine 105 boiler installation manual. Please help me wire it right. The one with red lines is my wiring plan.
System pump ---- the pump for individual heating zone.
DHW pump ---- the pump for the hot water sub-system(for shower, kitchen, not for the winter water heating system)
Boilder pump ---- the pump close to the boiler and help the water circulating to the boiler
Primary pump ---- the boiler pump?
Priority ---- for DHW only?
For the wiring, I have modified a sample wiring diagram coming with the Burnham Alpine 105 boiler installation manual. Please help me wire it right. The one with red lines is my wiring plan.