15
4.
Check that the heating system has been vented.
5.
Ensure that all shut-off gate valves to the heating
flow and return are open.
6.
Check that all doors and covers on the boiler are
closed.
7.
Ensure that all ball valves for the return tempera-
ture raising facility are open.
8.
Ensure that power is supplied to the boiler.
!
Please note
Risk of damage to the pressure-jet oil/gas
burner (if installed) when operating the boiler
with logs.
Ensure that the pressure-jet oil/gas burner
has been extended prior to operation with
logs.
Heat-up
Before heating up: Check that all required conditions
have been met. See chapter "Heat-up preparations"
from page 14.
Opening the hopper cover
Danger
Deflagration and poisonous flue gases can
cause serious injuries.
Never open the hopper cover in any operating
phase until the flue gas temperature has fallen
below 120 °C or 248 °F.
Danger
Poking around in the firebed leads to oxygena-
tion, which can produce a flash.
Never poke around in the firebed.
A
B
Fig. 8
1.
Initially open the hopper cover to lock
A
.
2.
Turn mushroom handle
B
to unlock the hopper
cover and fully open the cover.
Start-up/shutdown
Heat-up preparations
(cont.)
5684 987 GB
Summary of Contents for Vitoligno 250-S
Page 55: ...55 5684 987 GB...
