Operating Instructions
6
Start-up
Initial start-up
The heating contractor must perform the
initial start-up and explain the operation of
the system. Re fer to “Lighting and
Operating Instructions” on the following
page.
The operation of the boiler control must
also be explained to the system
operator/ultimate owner by the heating
contractor. Refer to literature packaged
with boiler control.
Necessary preparations prior to
initial start-up
(as well as for successive start-ups)
1. Check for water on the floor from the
discharge pipe of the pressure relief
valve or any other pipe, pipe joint, valve
or air vent.
If pressure relief valve is discharging,
contact contractor to locate source of
problem and take corrective measures.
Never cap or pl ug end of pressure relief
valve discharge pipe.
Ensure correct s ystem (water) pressure.
See pressure gage. If the system
pressure is below 10 psig, please call
your heating contractor.
2. Ensure fresh combustion air supply
vents to boiler room are open and
unobstructed.
Nothing must obstruct the flow of
combustion and ventilation air.
3. Open main gas supply valve.
4. Activate the system. Ens ure power
supply is activated and then activate
system power switch “
”.
Your heating system is now ready for
operation.
Start-up
Refer to “ Lighting and O perating
Instructions” on following page. The boiler
control regulates operation of the heating
system automatically in conjunction with
the indoor/outdoor control and any
programmed settings (if applicable).
Changes to the settings or program ming
can be made according to s eparate
instructions provided with the boiler
control.
For optimum operation
H Keep the boiler and the boiler room
clean and free of dust and dirt.
H Ensure proper system pressure by
occasionally checking pressure gage.
H Allow a qualified heating contractor to
regularly service and maintain your
heating s ystem.
Neglected maintenance impacts on
product warranty; regular cleaning and
maintenance ensures clean,
environmentally friendly and efficient
operation.
Viessmann recommends a maintenance
contract with a qualified heating
contractor.
If you require assistance fi nding a
qualified heating contractor, contact
Viessmann.
Shut-down
Brief shut-downs
Vitotronic controls
Set system power switch “ ”to“0”and
ensure main power supply to boiler and
control remains activated.
Vitotronic boiler control
manuals
Extended shut-downs
1. Close main gas supply valve.
2. Deactivate system power switch.
3. Deactivate main power supply to boiler
and control.
We recommend that you contact your
heating contractor prior to and after an
extended shut-down period. In this
manner, the appropriate precautions, i.e.
system freeze-up protection or heat
exchanger maintenance, can be taken.
5167 469 v1.1
Under these measures, the heating
system remains electrically activated.
CAUTION
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