Wiring diagram for Potterton tank thermostat PTT2

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Yes, there is H, C, L, TL, N.

H is i believe switch live for Heat
C is switch live for Cold.
L is live in
N is Neutral in.

But what is TL
 
howieleem said:
But what is TL

Signal from time control

Have you got a mid position valve, two zone valves or two pumps?
 
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howieleem said:
Yes, there is H, C, L, TL, N.

H is i believe switch live for Heat
C is switch live for Cold.
L is live in
N is Neutral in.

But what is TL
No thats Hyasinth, Crysatumum, lilly, tiger lilly and nosturtium.
Sorry for the spellings but I lost my Alan titchmarsh book :D

Stan
 
Sorry back to reality but do you have a multimeter.

Its very easy to check.

Stan
 
Ok that makes sense, TL is the Time Control live in, but why is there another Live in on L, its not needed is it?
 
1, common
2, no
3,nc
4,permanent live ( for boost button)
5, n
 

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