Hi, as my system has no Room thermostat, i have decided to replace my mechnical timer with an electronic timer/ room thermostat.
Here I am a bit confused. The mechanical timer appears to have its own electrical supply and two wires connected to the combi boiler. I want to replace it with a Hirstmann DRT2.
The Thermostat is a Horstmann DRT2, which has a
'no',
'com' and
'NC' connections in it (it is battery powered).
I want to connect it to the chaffoteaux et Maury Britony combi 80.
This has
1.Neutral,
2, Phase,
3, Room Thermostat live
4. Accelerator Resistor
5. Common for Accelerator and room thermostat
The horstmann instructionsa re pretty vague and suggest connecting the live to the 'Com', then the 'No' to the 'heater (or NC depending on the type of heater); and the neutral from heater to the Neutral.
So how should I connect this up? Seems very confusing
Cheers
Edward
Here I am a bit confused. The mechanical timer appears to have its own electrical supply and two wires connected to the combi boiler. I want to replace it with a Hirstmann DRT2.
The Thermostat is a Horstmann DRT2, which has a
'no',
'com' and
'NC' connections in it (it is battery powered).
I want to connect it to the chaffoteaux et Maury Britony combi 80.
This has
1.Neutral,
2, Phase,
3, Room Thermostat live
4. Accelerator Resistor
5. Common for Accelerator and room thermostat
The horstmann instructionsa re pretty vague and suggest connecting the live to the 'Com', then the 'No' to the 'heater (or NC depending on the type of heater); and the neutral from heater to the Neutral.
So how should I connect this up? Seems very confusing
Cheers
Edward