13
5.2
HYDRAULIC CONNECTION
5.2.1
SEALED HOT WATER HEATING SYSTEM WITH EXPANSION VESSEL
The generator must be provided with:
a - 1 safety valve
2 safety valves if output is (
≥
500.000 kcal/h)
b - Expansion vessel
c - Regulation thermostats
d - 1st safety thermostat
e - 2nd safety thermostat
f - Cut-off pressure switch
g - Well for control thermometer
h - Pressure gauge with flange for control pres-
sure gauge
i - Heat discharge valve or fuel on-off valve
N1 - Flow
N2 - Return
N3 - Instrument fitting
N4 - Lower fitting:
N4b expansion vessel fitting
N4c Filling/drain
N5 - Safety valve fitting (
≥
500.000 kcal/h: n. 2 valves)
N6 - Bulb wells (thermometer, pump consent ther-
mostat, regulation thermostat, safety thermostat)
N7 - Condensation recollection fitting
Ensure that the hydraulic pressure measured after the reduction valve on the supply pipe does not exceed
the operating
pressure specified on the rating plate of the component
(boiler, heater etc.).
As the water contained in the heating system increases in pressure during operation, ensure that its
maximum value does not exceed the maximum hydraulic pressure specified on the component rating
plate.
Ensure that the safety valve outlets of the boiler and hot water tank, if any, have been connected to an
exhaust funnel in order to prevent the valves from
flooding the room
if they open
.
Ensure that the pipes of the water and heating system
are not used as an earth connection
for the
electrical system as this can seriously and very rapidly damage the pipes, boiler, heater and radiators.
Once the heating system has been filled, you are advised to close the supply cock and keep it closed so
that
any leaks from the system
will be identified by a drop in hydraulic pressure indicated on the system
pressure gauge.
Summary of Contents for GREENOx BT COND 180
Page 31: ......
