Installation Guide

EN
32
Installation
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Changing the gas burner nozzle in the gas burner
i
The nozzles regulate the maximum gas throughflow for
each burner and gas type/pressure.
i
The gas cooktop is set by default to natural gas
G20/20mbar (pre-assembled).
i
Special setting for Australia and New Zealand:
The gas cooktop is set by default to natural gas/ 1.0 kPa
(G20/10mbar pre assembled).
i
Use only stamped and approved nozzles.
The stamp on the nozzles corresponds to the values in the
nozzle table and can be found either on the top or side of the
nozzles.
EU
Gas type/
gas pressure mbar
Ø SR burner/
normal burner
Ø R burner/
high-power burner
G20/20 104 125
G25/20 110 131
G20/10 122 155
G20/13 115 149
G25/25
G25.3/25
104 131
G20/25 100 119
G30/29
G31/37
69 85
G30/50
G30/31 – 50 mbar
62 78
Tab. 4.9 Nozzle table
Total nominal connection values for liquid gas:
Gas type mbar kW g/h m³/h
G30/G31 50 4.90 328 0.129
G30 29 5.00 348 0.137
Tab. 4.10 Liquid gas nominal connection values
Total nominal connection values for natural gas:
Gas type mbar kW m³/h
G20 20 5.00 0.449
G25 25 5.10 0.538
G25.3 25 5.10 0.538
G20 13 5.10 0.486
G25 20 4.80 0.501
Tab. 4.11 Natural gas nominal connection values
Special nozzle table for Australia and NewZealand:
AUS / NZS
gas type Ø SR burner/
normal burner
Ø R
burner
NG/1.0 kPa (G20/10) 1.22 1.55
ULPG/2.75 kPa (G31/27,5) 0.75 0.92
Tab. 4.12 Nozzle table (Australia and New Zealand)
1
Fig. 4.43 Connection to the test point adapter (LPG)
[1] Test point adapter
XX
Attach the test point adapter [1] to the gas cooktop
connection.
XX
Ensure that the seal is positioned correctly.
XX
Tighten all connections so that they are secure.
XX
Check that installation has been done correctly.
XX
Check the correct functioning of the stopcock.
XX
Check the gas pressure (LPG) as follows:
XX
Set the control knob to the 0 position.
XX
Close the gas supply.
XX
Unscrew the test point screw completely.
XX
Connect your measuring device to the test point connection.
XX
Open the gas supply.
XX
Set the gas pressure at the gas supply pipe
(LPG pressure bottle) to 2.75 kPa.
XX
Ignite the burner (see the Operation section).
XX
Check the burner flame.
XX
Close the gas supply after successfully setting the pressure.
XX
Set the control knob to the 0 position.
XX
Shut off the measuring device from the test point.
XX
Securely screw the test point screw back into the test point
adapter.
XX
Check that the screw is positioned correctly.
Subsequent installation work for both gas types
(NG/LPG)
XX
Check the tightness of the gas connection by conducting a
leak test (see Leak test section).
XX
Switch on the main switch/automatic circuit breaker.
XX
Put the cooktop into operation (see the Operation section).
XX
Check all the functions and the burner flame are working
correctly.
4.14.5 Changing the gas type
i
The burner nozzles, gas type and pressure may only
be changed by a certified engineer or BORA service
technician. He/she also assumes responsibility for the
proper gas installation and commissioning.
XX
Switch all appliances off.
XX
Close the gas supply to the gas supply pipe.
XX
Switch off the main switch/automatic circuit breaker.
XX
Secure the main switch/automatic circuit breaker against
being switched back on without permission.
XX
Make sure the power to the appliance is disconnected.