Hi
I have a customer with normal S-plan for the house + additional zone valve, pump and stat to run a swimming pool heat exchanger. All is running off a single oil boiler.
I need to control the swimming pool 'zone' and guess I will need to use relays to control the two pumps and single...
Hi Simon, I came across your comments on using relays for the 2 pump central heating system. I have a similar problem: normal S-Plan + separate zone valve, pump and stat for a swimming pool heat exchanger (running off same oil boiler). Do you have a wiring diagram for the 2 relay set up you...