I've got a digital immersion heater timer I want to install, but it's
not clear from the instructions how to wire it in. Others I've seen
have been very simple - supply here and appliance here. But this one
is much more confusing.
It has 5 terminals labeled:
L N COM NO NC
I have Live, Neutral and Earth coming from my supply and Live, Neutral
and Earth from the immersion heater (which runs about 3kW).
The wiring diagram for the timer seems to show that I need to connect
the L and COM terminals to the live supply. Connect the neutral supply
to the N terminal. And connect the heater to the NO termincal and to
the neutral supply.
In other words, I think the device itself is powered via the L and N
terminals, and when it switches it connected COM to NO. That's how it
seems to me but nothing in the instructions is very clear.
So, anyone have any ideas how I can connect this?
Is it OK to jam the two neutrals into one terminal to connect them?
The timer is a CED Control Master General Purpose Timer. Model IMT7E