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Connect the phase conductor to connecting terminal L (G).
4.
5.
Plug in the connecting cable of the valve actuators in your
heating circuits to the connecting terminals (H-I). Connect a
heat pump to the connecting terminal (H).
Make sure that all connecting cables are fixed properly to the cable
bushings before closing the cover.
6.
Close the cover again by pushing the latches of the cover
into the openings provided and press it down.
6.3
Behaviour after switching on the mains voltage
After switching on the mains voltage, the LED (B) lights permanently
green.
If the accessory has not yet been connected, connection mode will be
activated during the first 3 minutes after the mains voltage has been
switched on. See „6.4 Connecting further DHC accessories" on page 18
for more information.
During the first 10 minutes after the mains voltage has been switched on,
the accessory remains in start mode. In this time, all heating zones are
triggered and the channel LED lights permanently.
In the following 20 minutes, the valves are operated via two-point control. If
the temperature falls below the setpoint temperature, the valves are switched
on. If the setpoint temperature is exceeded, the valves are switched off.
After these 20 minutes, the valves are operated via PI control with PWM
output (normal operation).
Start-up
17
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