Verona WALL HUNG GAS BOILER manual Commissioning Cont, 15.3Checking the gas pressure at the burner

15.Commissioning Cont.

15.3Checking the gas pressure at the burner:

This boiler has been tested to the highest quality control standards.

The maximum and minimum gas pressures are already set during this quality control process however the checking procedure must be followed to ensure maximum operating efficiency from the boiler.

•	Remove the front					fitted (e.g. room	removing the electrical
	panel of the case.					thermostat) ensure	connector E (Figure
•	Loosen the internal					they "call for heat".	15.4).
	screw 15 (Figure				•	Switch on the boiler.	• Switch on the boiler.
	15.4) on the Outlet				•	Check the maximum	• Check the minimum
	Pressure Test Point					gas pressure and	gas pressure and
	of the Gas Valve and					compare the value on	compare the value on
	connect a pressure					the gauge with the	the gauge with the
	gauge using a					value indicated in the	value indicated in the
	suitable hose.					Section 2 on page 10	Section 2 on page 10
						(gas pressures at the	(gas pressures at the
						burner).	burner).
	15
					•	Check the maximum	• Switch off the boiler
	16			E		gas flow at the gas	and re-connect the
						meter and compare	electrical connector E
						the value indicated in	to the modulator coil.
						the section 2 on page	• Switch on the boiler.
						10 (gas flow rate).	• Check that the boiler
		Figure 15.4			• Switch off the boiler.		lights up uniformly.
					•	Disconnect the gas	• Switch off the boiler,
•	Set the		c.h.			modulator coil by	turn off the hot water
	temperature control						taps and disconnect
	knob to its maximum						the pressure gauge.
	position. If external						Important: after the
	controls are						checks all of the test

points must be sealed.

RIVA HEAT ONLY MANUAL - REV A 31