Application Examples - Siemens RDG Series Application Manual

Fan coil application
examples
24

Application examples

Installation and set up
1. Select a suitable thermostat.
2. Set application via DIP switch according to the mounting Instructions.
3. Wire and install the thermostat. Apply power.
4. If necessary, set parameter P01 (control sequence) and other application-specifi c parameters.
Application
Fan coil unit, 2-pipe cooling only
– Valve actuator: ON/OFF
– Keycard contact
Fan coil unit, 2-pipe with el. heater
– Valve actuator: ON/OFF
– Heating with electric heater ON/OFF
– Automatic changeover
– Return air temperature sensor
Fan coil, 4-pipe with el. heater
– Valve actuators H&C: PWM
– Electric heater: ON/OFF
– Electric heater enable input
– Window contact
How to set the application
1. Thermostat: RDG100
2. DIP switch: 2-pipe application
Y1 = ON/OFF
Actuator → Y1-N
3. Wiring:
Fan → Q1...Q3-N
Key card → D1-GND
4. Parameters: no change necessary (factory-setting)
TIPS
– Keycard contact in hotel guest rooms helps saving energy costs
– RDG100T with 7-day program
– RDG100KN communicating KNX
1. Thermostat: RDG110
2. DIP switch: 2-pipe application, el. heater
Actuator → Y11-N
3. Wiring:
El. heater → Y21-N
Fan → Q1...Q3-N
Temp. sensor → X1-M
H/C changeover sensor → X2-M
4. Parameters: P01 = 3 (automatic H/C changeover)
TIPS
– RDG110 with relay outputs can drive direct an el. heater
up to 1 kW
1. Thermostat: RDG100
2. DIP switch: 4-pipe application, el. heater
Y1 = PWM
Y3 = PWM
Actuator heating → Y1-N
3. Wiring:
Actuator cooling → Y3-N
for el. heater → Y2-N
Contactor 1
Fan → Q1...Q3-N
El. heater enable → X1-M
Window cont. → D1-GND
4. Parameters: P38 = 5 (El. heater Input)
P46 = 2 (PWM heating)
P47 = 2 (PWM cooling)
TIPS
– Electric heater enable signal for saving energy costs
1
– Note : Add relay if load exceeds 1A!