Checking The Electrical Connections For Firm Seating; Commissioning; Setting Air Flow Rates - Viessmann LB1 Installation And Service Instructions For Contractors

Checking the electrical connections for firm seating

Danger
Contact with live components can lead to seri-
ous injury from electric current. Some compo-
nents on PCBs remain live even after the power
supply has been switched off.
When working on appliances, isolate the sys-
■
tem from the power supply, e.g. at a separate
MCB/fuse or a mains isolator. Check that it is
no longer live. Safeguard against unauthorised
reconnection.
■ Prior to working on the appliance, wait at least
4 min until the voltage on the charged capaci-
tors has completely dropped out.

Commissioning

1. Insert the power supply plug of the ventilation unit
into a standard socket.
2. Use / to select the language.
3. Confirm with OK.
The display shows parameter "Enable Vitovent
7D00": See page 21.
4. Confirm with OK.
Use / to select the connected ventilation unit.
"2": Vitovent 200-C
"3": Vitovent 300-C or Vitovent 300-W
5. Confirm with OK.
6. Set the "Time" and "Date".

Setting air flow rates

Adjust the air flow rates at the ventilation programming
unit in line with engineering parameters and demand.
For this, note the following:
■ Set the design air flow rate from the engineering
parameters for ventilation level 3 (nominal ventila-
tion): See chapter "Setting ventilation levels for
Vitovent 200-C" and "Setting ventilation levels for
Vitovent 300-C/300-W".
■ Set air flow rates for ventilation levels 1 to 4 in
ascending order, i.e. lower for ventilation level 1 than
for ventilation level 2, etc.
Note
If non-incremental settings are chosen for the air flow
rates, settings may be corrected automatically at the
end of the complete setting process.
■ Recommendation: Set the air flow rates so that suc-
cessive ventilation levels are at least 10 m
Commissioning, inspection, maintenance
Check the firm seating of electrical plug-in connectors
and cable entries.
7. Confirm with OK.
The operating condition of the ventilation unit is
transmitted. A progress bar appears on the display.
This process may take several minutes.
Note
If the progress bar continues to run, check the fol-
lowing:
■ Connecting cable to ventilation unit: See page 10
and 12.
■ Selection of the connected ventilation unit ("Ena-
ble Vitovent 7D00"): Press
ously for approx. 4 s.
■ DIP switch Vitovent 200-C: See page 10.
8. The standard menu is displayed.
Notes
■ The actual air flow rates that the mechanical ventila-
tion system can achieve are dependent on the pres-
sure drop resulting from the ductwork and the resist-
ance of the filters (filter class).
In some ventilation units, the speed of both fans is
■
automatically adapted to maintain the selected air
flow rate irrespective of the level of filter contamina-
tion.
■ In order to balance out pressure differentials
between the supply air and extract air side, the air
flow rate can be adjusted for one side relative to the
other: See page 16.
3 /h apart.
and simultane-
15