Weather-compensated control unit
Press the following keys:
1. K + d simultaneously for
approx. 2 s.
2. a/b for the required relay out-
put.
3. d Relay test is completed.
The following relay outputs can be controlled subject to system design:
Display screen Explanation
Base load Burner modulation base load
Full load Burner modulation full load
Int. pump ON Int. output 20
Heating valve Diverter valve set to heating mode
Valve central position Diverter valve in central position (filling/draining)
DHW valve Diverter valve set to DHW mode
Heating circuit pump
M2 On
Mixer extension
Mixer OPEN Mixer extension
Mixer CLOSE Mixer extension
Output int. ON Output sK internal extension
Heating circuit pump
A1 ON
External extension H1
Central fault ON External extension H1
Scanning operating conditions and sensors
Constant temperature control unit
Press the following keys:
1. c press.
2. a/b for the required operating
condition.
3. d Scanning is completed.
The following operating conditions can be scanned, subject to the actual
system equipment level:
Display screen Explanation
1 15 °C/°F Actual outside temperature
3 65 °C/°F Actual boiler water temperature
5 50 °C/°F Actual DHW temperature
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