Viessmann Vitobloc 200 EM-50/81 Operating Instructions Manual page 30

Commissioning
28. Check, whether the external auxiliary drives, the
heating water pump and the return flow boost
are switched on.
29. Test the internal auxiliary drives.
30. Test the synchronization with 0-Volt meter and
starting impulse.
31. Adjust the cos φ, if necessary.
32. Check the start position switches at the Lambda
control valve.
33. Measure the exhaust gas.
34. Test the potential-free messages.
35. Test the regulation of the floating value.
36. Test network break-down/stand-by operation.
30
• functional test pursuant to the plant configuration
- cooling for the water pump
- fan (direction of rotation, setting of the motor current)
- module control panel: 12K1 switches at zero-crossing
• re-insert fuse 12F1 after successful test
• check, whether alternator contactor connects
- alternator terminal box on the side:
• cos-φ regulator: P1
adjust cos φ at 50 % load as a minimum
- Lambda control valve in the controlled system for the gas:
- the starting position must be set in such a way that the
Lambda control valve works at approx. 60°
display and operator's unit of the module control: the menu
"Motor values" at level 1 (see section 4.3) must indicate
approx. 20–60 mV as Lambda probe voltage
- display and operator's unit of the module control: display of
the probe voltage in the menu "Motor values" at level 1 (see
section 4.3)
• change the set value of the probe voltage and of the pa-
rameters at level 3 of the module control, if necessary (see
section 4.5)
- switching diagram, sheet 23
- module control panel: potential-free messages connected
to -X5 at the client's request
- switching diagram, sheet 19
- module control panel
• bridge terminal -X1/36.37
• connect the simulator (4–20 mA) to terminal -X1/42.43
• test the variable operating mode at 50–100 % capacity
• remove bridge from terminal -X1/36.37 again
- switching diagram, sheet 2
- module control panel
- external power supply
If the plant has been sold for mains-connected operation
only:
• to simulate a breakdown of the grid during operation cut off
the power supply or switch off fuse -1F3
PLEASE NOTE
The module will then switch off after a certain
overtravel time due to a breakdown in the
mains and must re-start on its own after a cer-
tain recovery time of the grid, if fuse 1F3 is re-
connected and after the module has been ex-
ternally selected.
If the plant has been sold for stand-by operations:
• check that the system-tie circuit breaker, the mains stand-
by request and the network measurement have been con-
nected pursuant to sections 5 and 6 below;
mains operations will be released, if terminal -X1/38.39 has
been connected for stand-by operations
Operating instructions for the natural gas-fuelled CHP module VITOBLOC 200