Siemens RDG400 manual 4.4Setpoints and sequence

4.4Setpoints and sequence

In single-duct changeover applications the Comfort setpoints for heating and cooling sequence are the same (w).

In applications with electrical heater, radiator or heating / cooling coil the Comfort setpoint is at the heating sequence.

The start of the cooling sequence is linked to “Dead-zone” above the Comfort setpoint. The dead zone can be set via parameter P33.

The setpoints for Energy Saving and Protection mode are below the Comfort setpoints (heating) and above the Comfort setpoints (cooling).

They can be set via parameters P11, P12 (Energy Saving) and P65, P66 (Protection).

The control signal for air flow can be limited via parameters P63 and P64. See section 4.8.1.

To simplify the diagram below, only minimum limitation is shown.

wHeatProt		w		wCoolProt
	wHeatEco		wCoolEco

T[°C]

3181D127

Comfort mode

Energy Saving / Protection mode

Application

Heating mode

Cooling mode

Heating mode

Cooling mode

Y

Y

Y

Y

Single duct

WHeatEco T

W

T

W

T

WHeatProt

WCoolEco

WCoolProt T

Single duct

Y

Y

Y

Y

with min/max

limitation

W

T

W

T

WHeatProt

WHeatEco T

WCoolEco

WCoolProt T

		Comfort mode			Energy Saving				Protection mode
Application
Single duct	Y		YE			YE				YE
with					Y				Y
electrical
heater			W	T		WHeatEco	WCoolEco	T		WHeatProt WCoolProtT
	Y		YR			YR				YR
Single duct					Y				Y
with radiator
			W	T		WHeatEco	WCoolEco	T		WHeatProt WCoolProtT

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Siemens	RDG100, RDG100T, RDG110, RDG140, RDG160 Basic Documentation	CE1P3182en
Building Technologies	Functions	28 May 2009