TECHNICAL ASSISTANCE SERVICE
37
It is essential to perform the following checks before start-
ing up or testing the functioning of the boiler.
- Check that the water supply and fuel shut-off cocks are
open.
- Check that the water pressure gauge shows a pressure
over 1 bar
with the system cold. Check also that the
water circuit is properly de-aerated.
- Check that the expansion vessel (fitted on installation)
is properly pre-charged.
- Check that the electrical connections have been made
correctly.
- Check that the flue gas vent and air intake pipes have
been correctly installed and connected.
- Check that pump turns freely. Unscrew the inspection
cap and use a flat blade screwdriver to check that the
pump shaft turns smoothly.
b
Protect all electrical devices under the pump before you
unscrew the inspection cap just in case water comes out.
Once you have completed all the checks listed above,
proceed as follows to start up the boiler for the first time.
- Set the room thermostat to the required temperature
(~20°C) or, if the system has a timer or temperature
controller, make sure that this is switched “On” and
adjusted to the required temperature (~20°C).
- Turn the system’s mains power switch ON.
- Turn the boiler thermostat to about the middle of the
section with three lines.
On models 26 BK and 35 BK:
- Turn the boiler thermostat to about the middle of the
section with two lines.
PREPARING FOR INITIAl START-uP
INITIAl START-uP
20
40
60
80
100
0
120
20
40
60
80
100
0
120
20
40 60 80
100
4
3 2 1
0
0
120
