306
1 Operation
1.1 Start-up
Caution
Risk of damage to property as a result of performing
initial start-up on your own authority. Commissioning
must be performed by Hoval customer service only !
Checklist to prepare for commissioning:
■
Have all media connections been established (wiring,
water connections, condensate drains, where applicable
refrigerant pipes and air duct connections)?
■
Is the heating medium and/or cooling medium available?
■
Are the hydraulics aligned and balanced?
■
Are all control components installed and connected to the
novaNet system bus?
■
Are all of the respective trade groups (installer, electrician,
designer, etc.) present at the scheduled time?
■
Are the system operating personnel present for training at
the scheduled time?
1.2 Operation
The system runs fully automatically in accordance with the
operating times and temperature conditions.
■
Follow the operating instructions for the DigiNet operator
terminals.
■
Check alarm displays daily.
■
Correct changes to operating times in the automatic
programming.
■
Ensure free air outlet and unhindered dispersion of the
supply air.
1.3 Decommissioning
Caution
Risk of property damage due to frost. When shut-
ting down the system, take appropriate measures to
ensure that the heating or cooling medium does not
freeze.
Take one of the following steps to prevent frost damage
when decommissioning the system:
■
Make sure that the room temperature is high enough.
■
Have professional personnel drain off the heating/cooling
medium circuit.
■
Have professional personnel frost-proof the heating/
cooling medium circuit with antifreeze.
■
For RoofVent
®
direct cool and RoofVent
®
twin pump:
Secure voltage supply for the condenser (operation of the
oil sump heating).
2 Maintenance and repair
2.1 Safety during maintenance
■
Before undertaking any work on the unit: turn the isolation
switch to the 'Off' position. Wait for the fans to stop.
Caution
Danger from electric current. The isolation switch
only switches off the fans; the control system is still
live! Before performing work on the control system,
switch off the entire control zone at the mains
disconnection switch and secure it with a padlock
against being switched back on.
■
Observe the accident prevention regulations.
■
Observe the particular dangers involved in working on the
roof and on electrical systems.
■
When working in the unit, take precautions against unpro-
tected, sharp steel plate edges.
■
Immediately replace damaged or removed informational
and warning signs.
■
Following maintenance work, reattach all dismantled
protective devices properly.
■
Unauthorised reconfiguration or modification of the unit is
not permitted.
■
Replacement parts must comply with the technical
requirements of the system manufacturer. Hoval recom-
mends the use of original replacement parts.
2.2 Filter change
Caution
Risk of injury if work is not performed appropriately.
Filters must be changed by trained personnel !
Each RoofVent
®
unit is equipped with a differential pressure
switch which monitors the fresh air filter and the extract air
filter. Change the filter when the 'Filter' alarm is displayed on
the operator terminal:
Changing the fresh air filter
■
Switch isolation switch to the 'Off' position and wait for the
fans to stop.
■
Open weather louvre door (Pos. ).
■
Change fresh air filter (Pos. ).
■
Close weather louvre door and return isolation switch to
the 'On' position.
Changing the extract air filter
■
Switch isolation switch to the 'Off' position and wait for the
fans to stop.
■
Remove access panel (Pos. ).
■
Change extract air filter (Pos. ).
Operation
Operation
Summary of Contents for RoofVent CON-9
Page 2: ......
Page 4: ...2...
Page 6: ...4...
Page 8: ...6...
Page 12: ...10 RoofVent LHW Use...
Page 40: ...38 RoofVent LKW Use...
Page 68: ...66 RoofVent twin heat Use...
Page 94: ...92 RoofVent twin cool Use...
Page 122: ...120 RoofVent twin pump Use...
Page 150: ...148...
Page 154: ...152 RoofVent condens Use...
Page 180: ...210 RoofVent LH Construction and operation...
Page 208: ...238 RoofVent LK Use...
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