Siemens RDF301.50H User Manual download pdf (Page 26)

Application How to set the application

VAV single duct, cooling only

– Damper actuator: 0…10 V

– Window contact

1. Thermostat: RDG400

2. DIP switch: Application single duct

Y10 = DC 0...10 V

3. Wire: Actuator → Y10-Go-G

Window contact → D1-GND

4. Parameters: no change (= default)

TIPS

– Window contact for saving energy during airing the rooms

VAV single duct and el. reheater

– Damper actuator: 3-pos

– El. heater: DC 0...10V

– Central time switch

1. Thermostat: RDG400

2. DIP switch: Application single duct +

el. heater

Y10 = DC 0...10 V

3. Wire: Actuator → Y1/Y2-Go

El. heater → Y10-Go

Time switch → D1-GND

4. Parameters: P47 = 1 (VAV output 3-pt)

TIPS

– Use a central time switch (e.g. SEH62.1) to set back room

temperature during non-business hours

– Adjust parameter prolong comfort period (P68) to allow

occupant to override the central time switch, e.g. by working

overtime

Compressor with reverse valve

– Compressor: ON/OFF

– Reverse valve: ON/OFF

1. Thermostat: RDG110

2. DIP switch: Application 4-pipe

3. Wire: Compressor → Y11/Y21-N

RV → Y12/Y22-N

4. Parameters: P52 = 0 (Fan disable)

– Set control sequence to manual change over (P01=2);

then the user can select manually between heating or cooling

VAV application examples

HP application example

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Siemens RDF301.50H User Manual Page 26