SECTION 2
INSTALLATION
IX. CHANGING ORIFICES
TO CHANGE MAIN ORIFICE (Refer to Figure
1.Turn off main gas supply valve.
2.Open 3/4" union in gas supply line.
3.Remove 1/2" nuts securing gas train to the burner housing.
4.Using a 11/16" wrench remove orifice from the mounting flange.
5.Install new orifice in reverse order.
WARNING
Before operating oven check for gas leaks!
TO CHANGE BYPASS (LOW FLAME) ORIFICE (Refer to
Figure
1.Turn off main gas supply valve.
2.Open 3/4" union in gas supply line.
3.With 1/2" wrench loosen compression nuts securing bypass tube to solenoid valve.
4.Remove orifice from bypass tube.
5.Install new orifice in reverse order.
X. VOLUMETRIC METHOD
WARNING
Before operating oven check for gas leaks!
IMPORTANT
During these measurements, no other gas appliance should be in operation being supplied from the same gas meter.
To determine gas flow setting value “E”:
E= Liters/min.
NB | = | Rated input in kW |
HuB | = | Heat (Calorific) value of gas in kW/m3 |
E= NB HuB
To determine the time of 0.1m3 (100 liters) gas usage:
Time in minutes =100
E
The time of the gas flow through the meter should be taken with a stopwatch.
1.Remove cover screw from the gas valve pressure (governor) adjustment valve.
2.Open main gas supply valve and start oven according to supplied instructions with the temperature control at maximum setting.
3.Once oven is in operation, adjust pressure valve (governor) to the calculated volume using the time for 100 liters of flow through. Turning the adjustment screw clockwise will increase the flow and
