INSTALLATION
HYDRAULIC CONNECTION
HOT WATER HEATING SYSTEM WITH CLOSED EXPANSION VESSEL
pressure 5 bar
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 (5 bar).
- 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.
The generator must be provided with:
a
1 safety valve
2 safety valves if output is
(for MEGA PREX BT 580)
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 pressure gauge
i
Heat discharge valve or fuel on-off valve
m
Recirculation
pump
N1
Flow
N2
Return
N3
Safety valve fitting (2 valves for MEGA PREX BT 580)
N4
Lower fitting:
N4a recirculation (anti-condensate pump)
N4b expansion vessel fitting
N4c
Filling/drain
N5
Instrument fitting
N6
Bulb wells (thermometer, pump consent thermostat,
regulation thermostat, safety thermostat)
N7
Condensation recollection fitting
- 20
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Summary of Contents for MEGA PREX BT Series
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