Atag iR 15 - Bus Connection; Room Thermostat Volt Free Connection; ATAG Central Heating Volt Free Timer Connection; ATAG Hot Water Volt Free Timer Connection

Installation & Servicing instructions ATAG iR-Range
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10.1 BUS connection (blue)
N/A not applicable.
10.2 Room thermostat volt free connection (black)
N/A not applicable.
10.3 ATAG Central Heating volt free timer connection (white)
N/A not applicable.
10.4 ATAG Hot Water volt free timer connection (white)
N/A not applicable.
10.5 DHW sensor connection (yellow)
N/A not applicable.
10.6 ATAG Outside Sensor (orange)
N/A not applicable.
10.7 230V Control Block (230V live output to pump)
The system pump MUST be wired directly back to the boiler into the (L) live pump, (N) Neutral pump and (E)
earth pump 230V live output to pump connections on the 230v control terminal block.
This is so the boiler can control when the pump is operated. This will allow the boiler to run the pump for the
pump overrun feature, which will last 60 seconds.
10.8 230V Control Block (230V live output)
If a live, neutral or earth wire is required for external controls these can be taken from the (L) live, (N) Neutral
or (E) earth 230V live output connections on the 230v control terminal block.
If external 230V controls are used, then a switched live is required from the control(s) to connect to the 230V
controlterminalblockinposition(SwL)Switchedlivetoreuptheboiler.
10.9 230V Control Block (SwL Switched live)
If external 230V controls are used, then a switched live is required from the control(s) to connect to the
230Vcontrolterminalblockinposition(SwL)Switchedlivetoreuptheboiler.Thiscouldbeinseriesafter
programmers, room stats, cylinder stats and motorised valves, then to SwL on the 230V control terminal
block.