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2.7. Protection of the Installation
2.7.1. Open systems
Moderator boilers operating in open central heating systems must be
connected according to requirements of the PN-91/B-02413 standard, so that
excess heat in the form of steam shall be removed through an open connection
(RP overflow pipe) to atmosphere
Fig.7. Installation protection for boilers operated in open central-heating
installations
KOMIN – CHIMNEY
ZAWÓR BEZPIECZE
Ń
STWA - SAFETY VALVE
CZUJNIK TEMPERATURY – TEMPERATURE SENSOR KOCIOŁ – BOILER
STEROWNIK – CONTROLLER
WENTYLATOR – BLOWER
ZAWÓR SPUSTOWY – DRAINAGE VALVE
NACZYNIE WZBIORCZE – PRESSURE VESSEL
ZAWÓR MIESZAJ
Ą
CY– MIXING VALVE
ZBIORNIK AKUMULACYJNY – HEAT ACCUMULATION TANK
W
ĘŻ
OWNICA - COIL
INSTALACJA GRZEWCZA – HEATING INSTALLATION
ZASILANIE Z SIECI - WATER PIPE SUPPLY
Installation requirements:
•
pressure vessel with the volume of at least 4% of the total water
charge
shape: cylindrical, type A. acc. to PN-91/B-02413-1-2
rectangular, type B, acc. to PN-91/B-02413-1-3
•
safety riser tube (RB) with inner diameter of:
25 mm for boilers rated up to 25 kW, inclusively