Danfoss CF-MC Instruction page 7

Instruction CF-MC Master Controller
5.3 Input for Global Standby
• Connect the two wires from an external switch (ON/OFF) to the two termi-
nals for the Global Standby input. ( g. 13)
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. ( g. 14)
Note: The Global Standby ensures a set room temperature xed at 8°C for all
Room Thermostats, but it can be changed with the Remote Controller, CF-RC.
5.4 Input for Heating & Cooling
• Connect the two wires from an external switch (ON/OFF) to the two termi-
nals for the heating and cooling input. ( g. 15)
When this switch is closed (ON) the system will switch from heating to
cooling mode.
• Fix the cable. ( g. 16)
Note #1: When the system is in cooling mode the actuator output will be acti-
vated (ON when NC actuators / OFF when NO actuators) when the temperature
in a room exceeds the set point.
Note #2: When the system is in cooling mode an independent dew-point alarm
function should be installed.
Danfoss o ers the below listed components (see example g. 17)
EDA-24V: Electronic dew-point alarm - 088H3001
EDA-S: Dew-point sensor - 088H3011
TWA-A: 24V-NO actuator – 088H3111
RA-C 20: Danfoss cooling valve* - 013G3096
• This valve must be dimensioned according to the placement on the
primary side if the application structure in the example is chosen!
5.5 Wiring
Input
Global Standby
Heating/Cooling
External
Antenna
5.6 Power Supply
• When all actuators, pump and boiler controls and other inputs are in-
stalled, connect the Master Controller's power supply plug to a 230V
power supply. ( g. 18)
Note: If the power supply plug is removed from the power supply cable dur-
ing installation make sure that the connection is made according to existing
law/legislation.
6
VI.UH.K2.80
Relays
1 2
L N L N
Produced by Danfoss Floor Heating Hydronics 01.2006
Actuator outputs
3 4 5 6 7 8 9 10