Commissioning The System - Viessmann Vitomax LW Series Operating And Service Instructions

Commissioning the system

Information on burners and accessories
01. Check that the fuel being used is permissible for
the current system configuration.
02. Open the boiler door/doors.
03. Insert the turbulators into the hot gas flues as far
as they will go.
04. Close the boiler door(s).
05. Open the installation room vents.
06. Fill the heating system with water and vent the
system.
!
Please note
Unsuitable boiler water may damage the
boiler system.
Use the correct water at all times.
See chapter "Standard values for water
quality"
Note
Document the charge and overall water hardness.
07. Check the system pressure.
08. Check all fitted components for function and tight-
ness.
09. Check the fuel supply pressure and tightness.
10. Open the flue gas damper.
11. Close the cleaning aperture on the flue outlet.
12. Check the connection between the drain line and
the condensate connection.
13. Open the shut-off valves in the oil lines at the tank
and filter, or open the gas shut-off valve.
Commissioning, inspection, maintenance
14. Start the system in the following order:
■ Mains isolator
■ Switches for all the equipment required for oper-
ating the boiler system
■ ON/OFF switch for the burner
Operating instructions for the burner
15. Start the system at a low heating output (max.
30 %).
16. Open the condensate drain.
17. Heat up the system to a temperature 20 K below
the operating temperature.
18. Collect and remove the condensate correctly.
19. As soon as the required flow temperature is
reached, open valves in the following sequence:
Boiler return valve
■
■ Feedwater valve, if required
■ Boiler flow valve (open slowly)
20. Close the condensate drain.
21. Enable full burner load.
22. While the system heats up, monitor the following:
■ Function of the control and safety equipment
■ Pressure and temperature
23. Check the tightness of the covers and retighten if
necessary (see table 7).
24. After approx. 50 hours run, check the tightness of
the following assemblies:
■ Boiler door/doors
Closures for the inspection port (tighten screws
■
if necessary)
15