Cascade Connection; Pic.12 An Exemplary Diagram Of The Heating System. Boilers Supply The Heating Circuits Directly; Pic.13 An Exemplary Diagram Of The Heating System. Boilers Supply The Hydraulic Clutch - Kospel EKCO.T Service Manual

12. Cascade connection.

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Pic.12 An exemplary diagram of the heating system. Boilers supply the heating circuits directly.

Pic.13 An exemplary diagram of the heating system. Boilers supply the hydraulic clutch.

CTP - room temperature sensor
CTZ – outdoor temperature sensor
TZ – DHWT thermostat
NW – expansion vessel
RW – expansion pipe
PO – circulation pump
PO* – additional circulation pump
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F – magnetic lter
SH – hydraulic clutch
ZP –straight-through valve
ZT – thermostatic valve
ZZ –check valve
ZR – regulating valve
ZU – discharge valve
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ZM – mixing valve
ZTD – three-way switching valve
ZO – air-vent valve
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