Settings At The Boiler Control Unit; Check The Connections To The Neutralising System. Filling With Neutralising Agent; Commissioning The System - Viessmann Vitoradial 300-T Service Instructions Manual

Commissioning, inspection, maintenance

Settings at the boiler control unit

Make the settings according to the information in chap-
ter "Additional information, coding" in the control unit
service instructions.
Check the connections to the neutralising system. Filling with neutralising
agent
Top up the neutralising system with water as neces-
sary. If the neutralising system is found to have dried
out, optimise the system hydraulics to improve its con-
densation properties. Increase the number of mainte-
nance intervals for the neutralising system.

Commissioning the system

Operating and service instructions for the control
unit and the burner
01. Open the boiler door and check that the internal
pipes are fully inserted into the hot gas flues. See
chapter "Inserting the internal pipes".
02. Check that the ventilation air aperture in the instal-
lation room is open.
03. Fill the heating system with water and vent the
system.
Permissible operating pressure: 4 bar (0.4 MPa)
!
Please note
Scaling and boiler damage may result if the
system is not operated with fully softened
heating water. Operate boilers only with
softened water.
Observe the instructions in chapter "Water
quality requirements".
04. Enter the amount of fill water and water hardness
into the table in chapter "Checking the water qual-
ity".
05. Check the system pressure.
06. Check the oil level or the gas supply pressure.
07. Open the flue gas gate valve or flue gas damper
(if installed).
10
To keep the burner cycle ratio as low as possible, set a
variable switching hysteresis.
08. Check that the cleaning aperture on the flue outlet
is closed.
Danger
Escaping flue gas poses a risk to health.
To prevent flue gas from escaping, always
connect the condensate drain with a trap.
Neutralising system installation and operat-
ing instructions
Note
The trap must always be filled with water. Check
the fill level on commissioning and during mainte-
nance.
Check regularly as there is a risk of the siphon
drying out in non-condensing operation.
09. Open the shut-off valves in the oil or gas line.
10. Start up in the following order
1. Mains isolator
2. Switch for the heating circuit pump
3. ON/OFF switch for the burner
Observe the burner manufacturer's operating
instructions.
11. The dew point range must be cleared as quickly
as possible. To do so, prevent any heat supply to
the consumers when heating the system from
cold. This also applies when restarting after main-
tenance and cleaning work.
!
Please note
When the boiler is heating up, unpleasant
fumes and odours can result from outgas-
sing from the thermal insulation, the thermal
block and the paint.
Ventilate the room during commissioning.