1 Operation
1.1 Initial commissioning
Attention
Risk of damage to property as a result of performing
initial commissioning on your own authority.
Commissioning must be performed by Hoval
customer service only !
Checklist to prepare for commissioning:
■
Have all media connections been established (flue gas
accessories, electrical wiring, gas connection and, if
required, condensate drain and air duct connection)?
■
Are all the control components installed?
■
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
Caution
Mortal danger in case of escaping gas. If you smell gas:
– Do not smoke.
– Avoid open fire and sparks.
– Disconnect the gas and power supply to the unit.
– Open windows and doors.
– Call Hoval customer service.
The system runs fully automatically depending on the
programmed operating times and temperature conditions.
■
Observe the operating instructions for the control units.
■
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
■
Switch the unit to the 'OFF' mode.
■
Close the cut-off valve in the gas supply line.
■
Let the unit cool off. The fan continues to run to cool down
the heat exchanger.
■
When the fan comes to a stop: switch off the plant on the
main switch.
1.4 Putting into operation again
■
Open the shutoff valve in the gas supply line.
■
Switch on the plant on the main switch.
■
Select the desired operating mode on the control units.
2 Maintenance and repair
2.1 Safety during maintenance
■
Before all work: switch the unit to the 'OFF' mode.
■
Close the cut-off valve in the gas supply line.
■
Let the unit cool off. The fan continues to run to cool down
the heat exchanger.
Attention
Danger of burning due to hot components. Do not
switch off the power supply until the fan comes to a
complete stop!
■
Switch the isolation switch to the 'Off' position.
■
Observe the accident prevention regulations.
■
Observe the particular dangers involved in working on the
roof and on electrical systems.
■
When working on the unit, objects (e.g. tools) could be
dropped. Block off the area underneath the unit.
■
Do not attach additional loads to the unit.
■
When working in the unit, take precautions against unpro
-
tected, sharp metal edges.
■
Wear suitable protective equipment (helmet, gloves,
mouth protection).
■
Immediately replace damaged or removed informational
and warning signs.
■
Following maintenance work, professionally reassemble
all dismantled protective devices.
■
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.
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Operation
Operation
