I am trying to replace an old thermostat with a Theben Ramses 701. The old wiring is Red & Yellow connected. Blue NC, earth to an earthing point.
My new thermostat (Ramses 701) has terminals 1 2 N N. I think Red should go to 1, and then I'm stuck. Wiring diagram shows Neutral to 2 and one of the N's but to me blue is neutral - what's the yellow wire? And I can't see an earth point.
Can anyone help?
Many thanks
My new thermostat (Ramses 701) has terminals 1 2 N N. I think Red should go to 1, and then I'm stuck. Wiring diagram shows Neutral to 2 and one of the N's but to me blue is neutral - what's the yellow wire? And I can't see an earth point.
Can anyone help?
Many thanks