Initial Operation And Further Start-Ups; Placing Out Of Service; Maintenance - S+H Nolting NG-LF 10 S Mode D'utilisation

5. INITIAL OPERATION AND
FURTHER START-UPS
5.1 Initial Heating Operation
After opening the gas valve, position the
operating switch to Heat or ON.
In the case of operation using a room thermostat,
the thermostat must
temperature.
Ignition is switched on at the same time as the
fan and, after a brief pre-purge time, the solenoid
valve is opened.
After establishing the flame, ignition is shut off.
The WAH has reached its operating setting.
If the flame should extinguish during operation or
should not form by the end of the ignition time,
the solenoid valve closes automatically.
The automatic gas firing unit has executed a fault
shutdown and interlock. The red fault light on the
switch box will go on.
When any malfunction has been corrected, the
WAH can be restarted after approximately 60
seconds by pressing the reset button.
5.2 Initial Fan Operation
In the NG-LF 30 S to NG-LF 75 S WAH the fan
can be switched on independently of the room
thermostat by turning the main switch to the FAN
position for air circulation in the installation room.
Heater operation and room thermostat are
inoperative in this switch setting.
be set using room

6. PLACING OUT OF SERVICE

Place the selection switch in the O position
and close the gas infeed.
The WAH must be completely cooled prior to
transport.

7. MAINTENANCE

For assuring operational reliability and to achieve
optimal efficiency, the WAH must be serviced and
cleaned at appropriate intervals.
When this is done, the following must be
observed :
When doing maintenance, disconnect the
•
mains plug and close the gas line.
The WAH, especially the infrared flicker
•
detector, burner and the fan must be checked
at regular intervals for dirt and, if necessary,
cleaned.
Do not use water for cleaning!
•
Use only
•
manufacturer's replacement parts.
Repairs to electrical and gas conducting
•
components must be done only by specialist
personnel!
On completion of service work, initial start-up
•
together with function check must be re-done.
- 14 -
the original equipment