Installation Guide CF-MC Master Controller
Danfoss Heating Solutions VIUHK8C1 02/2013
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6.2 Relays for Pump and Boiler Control
Activate Relay mode on CF-MC Master Controller (g. 20):
•Use the menu selection button to select the Relay mode. Relay LED ashes.
•Activate Relay mode by pressing OK . Relay LED goes ON.
Select the Relay conguration (g. 20/22):
•Press the output selection button and toggle between the possible Relay congurations -
the output LEDs will be ON – indicated below:
•NO LEDs: The relays are not used.
•1 LED: Pump control.
•2 LEDs: Boiler control.
•3 LEDs: Pump and boiler control.
•4 LEDs: Pump control with 2 min. start/stop delay.
•5 LEDs: Pump and boiler control, with 2 min. start/stop delay on pump (default).
•Activate selected relay conguration by pressing OK .
Note! If the pump relay is active, the CF-MC Master Controller will run a pump motion program every 3rd
day and it will last for one minute.
More relay congurations can be made via the CF-RC Remote Controller (see separate instruction).
6.3 Input for Away Function and Heating and Cooling
Activate Input mode on CF-MC Master Controller (g. 20):
•Use the menu selection button to select the Input mode. Input LED ashes.
•Activate Input mode by pressing OK . Input LED goes ON.
Select the Input conguration (g. 20/21/22):
•Press the output selection button and toggle between the possible Input congurations
- the output LEDs will be ON – indicated below:
•1 LED: The input ports are not used.
•2 LEDs: The CF-MC Master Controller will switch to cooling mode when the input for heating/
cooling is activated (g. 2 - ).
•3 LEDs: The CF-MC Master Controller will switch to a xed set room temperature at 8 °C for
all Room Thermostats when the input for away function is activated (g. 2 - ).
•4 LEDs: The CF-MC Master Controller will switch to cooling mode when the input for
heating/cooling is activated (g. 2 - ). In heating mode the CF-MC Master Controller will
switch to a xed set room temperature at 8 °C for all Room Thermostats when the input for
away unction is activated (g. 2 - ) (default).
•Activate selected input conguration by pressing OK .
6.4 Heating/Cooling
A 2-pipe system can be congured for automatic heating/cooling change-over.
•A PT-1000 pipe sensor must be connected to the PT-1000 input (g. 2 - ).
•Conguration is only possible via CF-RC Remote Controller (see separate instruction).
6.5 Relays on more (2 to 3) CF-MC Master Controllers
If more CF-MC Master Controllers are connected to CF-MC Master Controller 1 in one system, their
relays for pump and boiler control should be congured separately!
Activate Relay mode on CF-MC Master Controller 2/3 (g. 20):
•Use the menu selection button to select the Relay mode. Relay LED ashes.
•Activate Relay mode by pressing OK . Relay LED goes ON.
Select the Relay conguration (g. 20/22):
•Press the output selection button and toggle between the possible Relay congurations -
the output LEDs will be ON – indicated below:
Uses pump and boiler connected to CF-MC Master Controller 1:
•NO LEDs: The relays are not used (default).
If local manifold and pump are separate:
•1 LED: Pump control.
•4 LEDs: Pump control with 2 min. start/stop delay.
•Activate selected relay conguration by pressing OK .
6.6 Wireless relay
CF-WR Wireless Relay can be connected to the CF-MC Master Controller and congured by the CF-RC
Remote Controller (see separate instruction).