Flow path data sheet (heating)

The flow path data sheet in the heating section provides brief information on the pressure and performance components in the flow path.

The flow path data sheet is made up of various components. Information on the transfer circuit and overall circuit is displayed for the pipework, installation parts and control elements.

Table 1. Basic flow path components
Component in the flow path data sheet	Explanation of the individual components
	The input field shows the number of the selected flow path. The flow path number can be entered manually or set using the arrow keys. Tip: You can set the zoom behaviour in the drawing using the drop-down menu in the Building Services window under View. Alternatively, you can select the desired flow path in the drawing and display its details.
	The medium abbreviation of the selected flow path is displayed next to the flow path number. The background colour reflects the layer colour in the drawing.

Table 2. Components of the flow path data sheet: Transfer point area
Component in the flow path data sheet	Explanation of the individual components	Physical unit
Designation	Displays the name of the consumer in the flow path.	-
Level	Displays the level designation of the consumer.	-
Room	Displays the room name of the consumer.	-
System temperature	Displays the set fluid temperature of the last flow section and the first return section in the flow path. Note: You can set the desired system temperatures in the design options or in the options wizard.	°C
Output	Indicates the heat output of the consumer.	W
Mass flow	Specifies the mass flow of the consumer.	kg/h

Table 3. Components of the flow path data sheet: Pipe section
Component in the flow path data sheet	Explanation of the individual components	Physical unit
Δp_erf	Specifies the required differential pressure of the flow path or transfer circuit.	hPa
l	Specifies the total length of the flow path or the total length of the transfer circuit.	m
R_verf	Indicates the mean available pressure drop. This value results from: R_verf=(l*R+Z+Δp_Rest)/l	hPa/m
l*R	Indicates the pressure loss due to pipe friction.	hPa
Z	Specifies the pressure loss due to individual resistances.	hPa
l*R+Z	Specifies the sum of the pressure loss due to pipe friction and the pressure loss due to individual resistances.	hPa

Table 4. Components of the flow path data sheet: Installation parts area
Component in the flow path data sheet	Explanation of the individual components	Physical unit
Δp_WMZ	Indicates the pressure loss at the heat meter.	hPa
Δp_MISCH	Specifies the pressure loss at the 3-way fitting.	hPa
Δp_FIL	Specifies the pressure loss at the heat meter or strainer.	hPa
Δp_VERB	Specifies the pressure loss at the consumer.	hPa
ΣΔp_Einbau	Indicates the sum of the pressure losses of all installed parts. This value results from: ΣΔp_Einbau=Δp_WMZ+Δp_MISCH+Δp_FIL+Δp_VERB	hPa

Table 5. Components of the flow path data sheet: Control elements section
Component in the flow path data sheet	Explanation of the individual components	Physical unit
Δp_{ohne REG}	Specifies the pressure loss without control valve. This value results from: Δp_{ohne REG}=l*R+Z+_Δp_Einbau	hPa
Δp_THV	Specifies the pressure loss at the thermostatic valve.	hPa
Δp_RLV	Indicates the pressure loss at the return screw fitting.	hPa
Δp_RGV	Specifies the pressure loss at the regulating valve(balancing valve, differential pressure regulator).	hPa
ΣΔp_Abgleich	Indicates the sum of the pressure losses at the control valves. This value results from: ΣΔp_AbgleichΔp_THV+Δp_RLV+Δp_RGV	hPa
Δp_Rest	Indicates the unbalanced residual pressure due to hydronic balancing. This value results from: Δp_Rest=Δp_erf-ΣΔp_Abgleich+Δp_{ohne REG}	hPa