My wireless thermostat has packed up so have purchased a new one (updated model as the previous one is 12 years old). Thought that it would be a simple straight swap over of the receiver unit however the terminals are completely different.
Old one
I'm assuming that this is the correct wiring for the new one, but no connection for the black? New unit is a Salus RT510
Does it just need a termination block, or does it need a whole new cable running from the boiler?
Old one
I'm assuming that this is the correct wiring for the new one, but no connection for the black? New unit is a Salus RT510
Does it just need a termination block, or does it need a whole new cable running from the boiler?