7
Checking the high limit safety cut-out setting
The high limit safety cut-out must
not
be
set higher than 110 °C; if required, set it
to a maximum of 110 °C.
Control unit installation and serv-
ice instructions
Filling the heating system with water and venting
Record the fill volume, water hardness
and pH value on page 15 .
!
Please note
Unsuitable water quality can
result in damage to the boiler
body and the heating system.
Observe the "Water quality
requirements" on page 27 .
Fully opening the rotary damper in the flue outlet and locking it
again
The rotary damper must be in the hori-
zontal position.
Note
For handling the rotary damper, see
"Minimising pulsation noise" on
page 8.
Commissioning the system
Operating instructions for control
unit, burner and neutralising sys-
tem, service instructions for con-
trol unit, and burner manufactur-
er's documentation
1.
Check the heating system pressure.
Permissible boiler operating pres-
sure: 4 bar
2.
Check that the installation room vent
is open.
3.
Check the gas supply pressure.
4.
Check that the cleaning aperture on
the flue outlet is closed.
5.
Open the gas line shut-off valves.
6.
Switch ON the mains isolator, the
switch for the heating circuit pump
and the burner ON/OFF switch, in
that order.
Burner manufacturer's oper-
ating instructions
7.
Check the function of the neutralising
system.
Neutralising system operating
instructions
Commissioning, inspection, maintenance
Further details regarding the individual steps
5692 909 GB
Summary of Contents for Vitocrossal 300 CT3 SERIES
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