4.8.3
Symbols used
Tab.27 Tubing
Symbol
Explanation
Symbol
Explanation
Flow pipe
Return pipe
Flow collector pipe
Return collector pipe
Drinking water supply
Tab.28 Hydraulic components
Symbol
Explanation
Symbol
Explanation
Mixing valve
Valve, electronically actuated
Plate heat exchanger
Low loss header
Pump
Tab.29 Sensors and contacts
Symbol
Explanation
Symbol
Explanation
Outdoor temperature sensor
Temperature sensor
Safety thermostat
Electrical cable
Tab.30 Heat demand sources
Symbol
Explanation
Symbol
Explanation
Room thermostat
0-10V input
Tab.31 Heat producers
Symbol
Explanation
Symbol
Explanation
(Gas) Fueled boiler - single circuit
Heat pump
(Gas) Fueled boiler - double circuit
Tab.32 Heat consumers
Symbol
Explanation
Symbol
Explanation
Heating zone
Hot air heating zone
Radiator
Underfloor heating
Water tap
Shower
4 Before installation
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