18
boiler with cylinder
ZTD - three-way valve
ZAS - DHW Cylinder with a coil
TZ - cylinder temperature sensor or cylin-
der thermostat point of contact
Boiler connection to the central heating system
A magnetic filter must be installed on return pipe of central
heating installation system (before boiler inlet). The filter
must be installed in horizontal position, accordingly to flow
direction (see arrow on the filter body), with the magnetic
insert chamber to the bottom.
PI - manometer
ZK - cut-off valve
RW - expansion pipe
NW - expansion vessel
ZT - thermostatic valve
ZP - passage valve
G - radiator
RP - room thermostat
