I've got a T6160 which I want to replace with a Horstmann DRT2 and need help with the wiring.
The T6160 has terminals numbered and wired as follows
T5 - No wire
T2 - Blue
T3 - Red
T4 - No Wire
T1 - Yellow.
Testing the wires, with a sparks screwdiver (with the neon in the handle) I see the following:
T5 - always 'dead'
T2 - always 'dead'
T3 - always live
T4 - 'dead' when system is calling for heat but live when heat satisfied
T1 - Always live (but strangely the neon is brighter when the system is calling for heat).
I'm not clear on which is the real live (T1 or T3) but I guess that should be connected to COM on the DRT2.
The DRT2 also has NO and NC connections so next question is; which of these do I use and what wire do I connect to it?
The boiler is a Worcester Bosch condensing job, about 7 years old
Any help much appreciated
Thanks
Gerry
The T6160 has terminals numbered and wired as follows
T5 - No wire
T2 - Blue
T3 - Red
T4 - No Wire
T1 - Yellow.
Testing the wires, with a sparks screwdiver (with the neon in the handle) I see the following:
T5 - always 'dead'
T2 - always 'dead'
T3 - always live
T4 - 'dead' when system is calling for heat but live when heat satisfied
T1 - Always live (but strangely the neon is brighter when the system is calling for heat).
I'm not clear on which is the real live (T1 or T3) but I guess that should be connected to COM on the DRT2.
The DRT2 also has NO and NC connections so next question is; which of these do I use and what wire do I connect to it?
The boiler is a Worcester Bosch condensing job, about 7 years old
Any help much appreciated
Thanks
Gerry