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Installation Guide CF-MC Master Controller
4.2 24 V Actuators
•
Connect the two actuator wires to an output (fig. 9).
•
Fix the cable - round cable (fig. 10), squared/flat cable (fig. 11).
Note! If NC (normally closed) actuators are installed for Pulse Width Modulation (PWM) regulation for
floor heating, no further actuator output configuration is needed (see chapter 6.1).
4.3 Relays for Pump and Boiler Control
•
Pump: Connect the live wire (L) across the Pump Relay from an external power supply. Make
sure the power supply is switched off. Then connect the live wire, and complete other connec-
tions to the pump in accordance with existing law (fig. 12).
•
Fix the cable (fig. 13).
•
Boiler: Connect the live wire (L) across the Boiler Relay from an external power supply. Make
sure the power supply is switched off. Then connect the live wire, and complete other
connections to the boiler in accordance with existing law.
Note! The relays for pump and boiler are potential free contacts and can therefore NOT be used as direct
power supply. Max. load is 230 V and 8 A/2 A (inductive)!
4.4 Input for Away Function
•
Connect the two wires from an external switch (ON/OFF) to the two terminals for the Away Func-
tion input (fig. 14).
When this switch is closed (ON) the system will override the current set point for all the room
thermostats and change it to 8 °C.
•
Fix the cable (fig. 15).
Note! The Away Function ensures a set room temperature fixed at 8 °C for all Room Thermostats, but it
can be changed with the CF-RC Remote Controller.
If the system is configured for cooling, a dew-point sensor can be connected instead of an external switch.
4.5 Input for Heating and Cooling
•
Connect both wires from an external switch (ON/OFF) to the terminals for heating and cooling
input (fig. 16).
With the switch closed (ON), the system will switch from heating to cooling mode.
•
Fix the cable (fig. 17).
Note! With the system in cooling mode, the actuator output will be activated (ON for NC actuators/OFF
for NO actuators), when the temperature in a room exceeds the set point +2 °.
When the system is in cooling mode a dew-point sensor should be installed, connected to the Away Func-
tion input and placed on the primary supply side.
4.6 Wiring
Input
PT1000
Away Function
Heating/Cooling
Max. 3 m
External
antenna
4.7 Power Supply
Connect the CF-MC Master Controller power supply plug to a 230 V power supply, when all actua-
tors, pump and boiler controls and other inputs are installed.
Note! If the power supply plug is removed from the power supply cable during installation, ensure that the
connection is made according to existing law/legislation.
4.8 CF-EA External Antenna
The CF-EA External Antenna is installed as diverter when there is no transmission possible through a
large building, heavy construction or metal barrier, e.g. if the CF-MC Master Controller is located in a
metal cabinet/box.
•
Remove the plastic cover from the antenna connection on the CF-MC Master Controller (fig. 18).
•
Connect the CF-EA External Antenna (fig. 19).
•
Place the CF-EA External Antenna on the other side of the transmission barrier away from the
CF-MC Master Controller.
Danfoss Heating Solutions
Relays
1
2
3
L N L N
VIUHK902
Actuator outputs
4
5
6
7
8
9
10
01/2016
GB
5
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