4
Initial start-up, inspection and maintenance
Initial start-up
Operating instructions, service instructions ć control unit and burner
1. Check that the boiler room
ventilation aperture is open.
2. Check the inlet pressure of the
diaphragm expansion vessel.
If the inlet pressure of the
diaphragm expansion vessel is
lower than the static system
pressure, top up with enough
nitrogen to raise the inlet pressure
higher than the static system
pressure (0.1 to 0.2Ăbar).
3. Open the check valves.
4. Top up your heating system with
water and vent until the filling
pressure is higher (0.1 to 0.2Ăbar)
than the inlet pressure of the
diaphragm expansion vessel.
Permiss. operating pressureĂ Ă3Ăbar
. . .
5. Mark this pressure on pressure
gaugeĂA.
6. Return the check valves to their
operating position.
7. Open the oil or gas shut-off valves.
Operating and service documents
1. Complete and detach the
customer registration card:
H Hand the system user this part
for safe-keeping.
H Retain the heating engineer part.
2. File all parts lists, operating and
service instructions in the folder
and hand this over to the system
user.
5692Ă531ĂGB
A
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