17.
Check the fittings for leaks prior to
and during the heat-up phase and
retighten, where required.
Retighten all fittings at max. per-
missible operating pressure. Tor-
que values under cold and hot
conditions:
Closure
Dimen-
sions
Torque
Hand hole
100 x 150,
M16
100 Nm
Head hole
220 x 320,
M20
200 Nm
Manhole
320 x 420,
M24
350 Nm
18.
Check the boiler door(s) and
clean-out cover after approx. 50
hours for leaks and retighten all
screws.
Shutting down the system
Danger
Opening the boiler connections
and openings whilst the boiler
is under pressure can lead to a
high risk of severe injury.
Only open the connections on
the water and steam side and
inspection apertures after the
boiler has been completely de-
pressurised.
1.
Close the shut-off valves in the oil
lines (at the oil tank and filter) or
the gas shut-off valve.
2.
Switch OFF the burner.
3.
Isolate the system from the power
supply.
4.
Close all valves.
Further details regarding the individual steps
(cont.)
12
Commissioning, inspection, maintenance
55
92
548
GB
