4.7Control sequences

4.7.1Applications and sequences

Application VAV

Sequences

 

 

Single duct

h ( \ ), c ( / )

Single duct & electrical heater

el.h + c (

\

/

)

Single duct & radiator

rad + c (

r\

/

),

Single duct with heat/cool coil

h + c ( \

/ )

 

 

4.7.2Sequences overview (setting via parameter P01)

The sequence can be set via parameter P01, if available.

The thermostats can be used in systems featuring:

Heating only mode (P01=0)

Cooling only mode (P01=1)

Manual heating/cooling changeover (P01=2)

Automatic heating/cooling changeover (P01=3)

Heating and cooling mode (e.g. 4-pipe system) (P01=4)

The available modes depend on the application (selected via DIP switch, see section 4.5).

Parameter

P01 = 0

P01 = 1

Sequence

 

 

 

 

 

 

 

T °C

T °C

Mode

 

 

Heating mode

Cooling mode

Available for:

 

 

 

 

 

 

 

 

 

Single duct

 

 

 

 

 

 

 

Single duct &

3)

3)

electrical heater

 

 

 

 

Single duct &

3)

3)

radiator

 

 

 

 

Single duct with

 

 

 

 

heat/cool coil

 

 

 

 

P01 = 2

T °C

Manually select heating or cooling mode

1)

3)

3)

2)

P01 = 3

T

T °C

Automatic

heating/cooling

changeover via

external water

temperature

sensor or

remote switch

1)

3)

3)

2)

Notes 1) Changeover air

2)Changeover water; heat/cool coil

3)The controller operates in heating AND cooling mode. P01 is not available

 

 

17 / 42

 

 

 

Siemens

RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation

CE1P3182en

Building Technologies

Functions

28 May 2009

Page 17
Image 17
Siemens RDG400 Control sequences, Applications and sequences, Sequences overview setting via parameter P01, Available for