Initial Operation And Further Start-Ups; Placing Out Of Service; Maintenance; Conversion Instructions - S+H Nolting NG-L-30 Manual De Instrucciones

5. INITIAL OPERATION AND
FURTHER START-UPS
After opening the gas valve, set the main switch to
HEAT.
With operation using a room thermostat, the
thermostat must be set using room temperature.
Ignition is switched on at the same time as the
blower 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 has not formed by the time the ignition
time lapses, the ignition procedure described
above can be repeated up to 4 times. If, after this
time, there is still no flame, the solenoid valve
automatically shuts off the gas supply.
If the flame extinguishes during operation, the
solenoid valve will immediately shut off the gas
supply.
The automatic gas firing unit has executed a fault
shut-down and block. The red fault light on the
switching unit lights up.
Once the malfunction has been corrected, the
WAH can be restarted by pressing the reset button
on the control box. The red malfunction lamp goes
out, the switch-on
repeats.
8. INSTRUCTIONS ON CONVERSION
The WAH is set up for a specific type of gas per its designation and is equipped with the corresponding nozzles.
Should the WAH be operated using a gas type different from that of the designation, the nozzle pressures must
be adjusted in accordance with the information in the table below and the nozzles changed, if required.
Type
Nozzle
LPG P/B
Natural gas LL
Natural gas E
Natural gas E+
The connection pressure in the case of LPG is 50 mbar; for natural gas 20 mbar.
routine described
NG-L-30
P Nozzle
(mm) (mbar)
3,2 21,0
5,0 17,0
5,0 13,0
4,2 18,3

6. PLACING OUT OF SERVICE

Place the main switch in the 0 position and close
the gas supply.
The WAH must be completely cooled prior to
transport.

7. MAINTENANCE

For assuring operational reliability and to achieve
optimum cost-effectiveness, the WAH must be
serviced and cleaned at appropriate intervals.
When this is done, the following must be observed :
When performing maintenance, disconnect the
•
power cord and close the gas supply.
The WAH, especially the infrared flicker
•
sensor, burner and the blower must be
checked at regular intervals for fouling and, if
necessary, cleaned.
Do not use water for cleaning!
•
Use only original equipment manufacturer's
•
replacement parts.
Repairs to electrical and gas conducting
•
above
components must be done only by specialist
personnel!
On completion of service work, initial start-up
•
together with function check must be re-done.
NG-L-50
Nozzle P Nozzle
(mm) (mbar)
4,2 21,5
6,5 16,4
6,5 11,0
5,5 18,6
- 11 -
Caution!!!
NG-L-80
Nozzle P Nozzle
(mm) (mbar)
5,2 18,0
8,5 16,2
8,5 11,0
7,2 17,0
NG-L-100
Nozzle P Nozzle
(mm) (mbar)
6,0 24,0
10,0 12,0
10,0 9,0
8,0 16,1
Table 1