Viessmann VITOMAX 200-HS Operating And Service Instructions page 35

Commissioning
■ Boilout
See page 37
■ Plugs/closures on the water side
See page 37
Commissioning the control panel
■ Visual inspection
■ Switch ON the mains isolator
■ Setting the individual control MCBs
■ Checking individual functions
■ Checking the display/indicator func-
tions
■ Checking the rotational direction of
motors and actuators
■ Function test "EMERGENCY STOP".
Commissioning the feed pumps
■ Filling the pumps with medium
■ Starting the pumps and checking the
rotational direction
■ Adjusting the operating pressure of the
pumps during the first filling of the
boiler
■ Supply pressure must be lower than
the max. operating pressure
■ Checking whether the boil-dry protec-
tion device is active and operates.
Filling the boiler with feedwater
Check the following:
■ Is the drain (blow-down valve) closed?
■ Is the TDS valve in its "CLOSED" posi-
tion?
■ Is the air vent valve open?
■ Is the steam valve closed?
■ Are all inspection ports in the water
area watertight? Replace gaskets if
required.
(cont.)
■ When installing an economiser, are
the air vent valve and drain closed?
■ Are the water level glasses open?
Flush on the DHW side if required.
Adjusting the water level control
■ 1. Staged control
– Checking the switching points for
pump ON and pump OFF via the
water level indicator
■ 2. Constant control
– After the water level has reached the
low water indicator, adjust the zero
point
– Fill the boiler up to the top edge of
the sight glass and adjust the 100 %
point at the controller
– Set the feedwater valve to CLOSED
via the controller and adjust the zero
point of the valve at the controller
– Set the feedwater valve to OPEN via
the controller and adjust the 100 %
point of the valve at the controller
– Set the limit switch at the straight-
through feedwater valve for pump
OFF
– Preset the switching points for pump
ON and pump OFF at the controller,
whilst the boiler starts with the steam
valve closed
– Set feed pump switch to automatic
at the control panel and check the
function of the water level control
■ Repeat this process after burner com-
missioning and when the boiler has
been pressurised. As the boiler water
heats up and consequently expands,
check the low and high water indicator
levels again.
Commissioning
35