This relates to a Ravenheat CSI85A
Wiring diagrams shown here:
fig95:
View media item 56496fig48:
View media item 56490fig94:
View media item 56491
Anyways, the boiler has a 7 day timer integrated and a basic room thermostat downstairs (i.e. one with a simple temperature dial)
I want to get a Wireless roomstat which I hope will control both temperature and timer
e.g. Honeywell 927 as an example.
http://www.honeywelluk.com/products...tats/Wireless-Programmable-Thermostats/CM927/
with a wiring guide of:
View media item 56492
As the diagram is not identical to my boiler, I wanted to get confirmation that what I plan to do is OK:
Wire the connection that says 'Room Stat' on my boiler to A and B on the honeywell BDR91.
Wire the connection that says 'Timer ' L/N on the boiler to L/N on the BDR91 (on the boiler, L and N are directly connected on that connector).
My assumption is that as my boiler has a separate L/N for the timer, I do not need to put the BDR91 in line with the incoming power as shown in the honeywell diagram.
I am mildly concerned about the other two wires from the original clock circuit - they go across to the same place on the PCB as the roomstat connection. They are the ones labelled 'gr'.
Also, on both wiring circuits, the Room Thermostat connection is linked out. I definitely have a piece of white PVC T+E that is connected and goes to the downstairs (the E is not connected to anything, to reassure you). So I'm wondering that if the 'Room Thermostat' and Timeclock switches are used, then it must be configured as a logical AND... and in that case, I need to either link across the 'Room Thermostat' connection (as they have done in the wiring diagram) and use the Connector that serves the Timeclock, or vice-versa.
Does this make sense? Sorry if it seems overcomplicated
Wiring diagrams shown here:
fig95:
View media item 56496fig48:
View media item 56490fig94:
View media item 56491
Anyways, the boiler has a 7 day timer integrated and a basic room thermostat downstairs (i.e. one with a simple temperature dial)
I want to get a Wireless roomstat which I hope will control both temperature and timer
e.g. Honeywell 927 as an example.
http://www.honeywelluk.com/products...tats/Wireless-Programmable-Thermostats/CM927/
with a wiring guide of:
View media item 56492
As the diagram is not identical to my boiler, I wanted to get confirmation that what I plan to do is OK:
Wire the connection that says 'Room Stat' on my boiler to A and B on the honeywell BDR91.
Wire the connection that says 'Timer ' L/N on the boiler to L/N on the BDR91 (on the boiler, L and N are directly connected on that connector).
My assumption is that as my boiler has a separate L/N for the timer, I do not need to put the BDR91 in line with the incoming power as shown in the honeywell diagram.
I am mildly concerned about the other two wires from the original clock circuit - they go across to the same place on the PCB as the roomstat connection. They are the ones labelled 'gr'.
Also, on both wiring circuits, the Room Thermostat connection is linked out. I definitely have a piece of white PVC T+E that is connected and goes to the downstairs (the E is not connected to anything, to reassure you). So I'm wondering that if the 'Room Thermostat' and Timeclock switches are used, then it must be configured as a logical AND... and in that case, I need to either link across the 'Room Thermostat' connection (as they have done in the wiring diagram) and use the Connector that serves the Timeclock, or vice-versa.
Does this make sense? Sorry if it seems overcomplicated