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Mexico Super RS485 - RS4125 -
Installation & Servicing
INSTALLATION
28 INITIAL LIGHTING
LEGEND
A.
Gas control valve.
B.
Burner pressure test point.
C.
Main burner pressure adjuster.
D.
Inlet pressure test point.
TO LIGHT THE BOILER
1.
Check that all the drain cocks are closed and any valves in
the flow and return are open.
2.
Check that the gas service cock (E) is OPEN and the boiler
mains on/off switch is OFF.
3.
Slacken the screw in the burner pressure test point (B)
and connect a gas pressure gauge via a flexible tube.
4.
Switch the electricity supply ON and check that all external
controls are calling for heat.
5.
Set the boiler thermostat knob (G) to position 6. The pilot
solenoid valve should open and the intermittent spark
commence, continuing until the pilot is established. The
main burner will then cross-light smoothly. If this sequence
does not occur, refer to the Fault Finding section.
6.
Test for gas soundness around ALL boiler gas
components using leak detection fluid.
7.
Operate the boiler for 10 minutes to stabilise the burner
temperature.
8.
The boiler is preset at the factory to its nominal rating.
Refer to Table 2 (page 2). If adjustment is necessary
remove the sealing cap and turn the adjusting screw
clockwise to increase/anticlockwise to decrease the
pressure until the required burner pressure is achieved.
Refit the sealing cap.
9.
Set the boiler mains on/off switch to OFF.
10.
Remove the pressure gauge and tube. Retighten the
sealing screw in the pressure test point.
11.
Turn ON and check for gas soundness at the pressure
test point.
12.
Refit the lower front panel and secure with the 2 fixing
screws.
E.
Gas service cock.
F.
Sightglass.
G.
Boiler thermostat knob.
H.
Main burner 'On' neon.
J.
Overheat thermostat reset button (optional).
INST
ALLA
TION
200942-1.p65
3/4/2004, 9:25 AM
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