Form No. 43539470
Oct 2019 A
–12–
8.3)
INSTRUCTIONS FOR PRESSURE TEST GAUGE CONNECTION
INLET GAS PRESSURE CHECK
1.
Turn off all electrical power and manual gas shutoff valve to the system to connect manometer hoses.
2.
Turn the pressure test screw in the center of the inlet pressure boss (see Figure 1 below) not more than one
turn counterclockwise. Attach a 9 mm hose and manometer over the inlet pressure boss on the valve.
3.
Ignite the appliance burner by switching on the electricity supply to the appliance and open the manual gas
shutoff valve. Check that the manometer reading is as shown in the chart below (see also the Data Label
affixed to the Burner Control Box).
4.
Switch off the electricity supply to the appliance and close manual gas shutoff valve. Remove the manometer
tube from the gas valve test boss. After testing, carefully seal test point with the provided screw.
Recommended torque = 1.0 Nm.
MANIFOLD GAS PRESSURE CHECK AND ADJUSTMENTS
All adjustments must be made on the basis of the specific characteristics of the appliance. Check inlet and outlet
pressure using the pressure test points provided. After testing, carefully seal test points with the provided screws.
Recommended torque = 1.0 Nm.
1.
Turn off all electrical power to the system to connect manometer hoses.
2.
Turn the pressure test screw in the center of the outlet pressure boss not more than one turn
counterclockwise. Attach a 9 mm hose and manometer over the outlet pressure test boss on the valve (see
Figure 1 below). If regulator needs to be adjusted, see instructions below.
TO ADJUST REGULATOR (single stage gas valves):
1.
Remove the protective plug A (see Figure 1 below). Turn regulator adjustment screw B clockwise
to
increase presure, or counterclockwise
to decrease pressure. After setting put back the protective plug.
DO NOT EXCEED THE PRESSURES SHOWN IN THE GAS PRESSURE TABLE.
2.
After testing pressure and adjusting the regulator, turn off all electrical power to the system, remove
manometer hoses, turn outlet test screw clockwise to seal pressure port. Tighten to 1.0 Nm torque minimum.
Turn on system power.
Figure 1
GAS PRESSURE TABLE
GAS TYPE
MANIFOLD PRESSURE
SUPPLY PRESSURE
Minimum*
Maximum
Natural Gas
10 mbar
20 mbar
60 mbar
Propane Gas
24.9 mbar
37 mbar
60 mbar
* Minimum permissible gas supply pressure for purpose of input adjustment