SERVICE AND SPARES
Greenstar Ri Compact 6 720 646 610 (2013/12)
34
6.2
CHECKING THE GAS INLET PRESSURE
▶ Check that the gas working pressures in the system conform to the
figures shown in section 5.5.1:
6.3
CHECKING FLUE INTEGRITY
The integrity of the flue system and performance of the boiler can be
checked via the flue turret sample points.
Fig. 62 Flue turret test points
With the boiler case on and the boiler running at maximum output (refer
to section 6.5.1 “Setting the boiler to maximum”).
▶ Ensure that the probe reaches the centre of the air intake, adjust the
cone on the probe so that it seals the sample point and correctly
positions the end of the probe.
▶ Insert the analyser probe into the air intake sample point.
▶ Allow the readings to stabilise and check that:
– O
2
is equal to, or greater than 20.6%.
– CO
2
is less than 0.2%
▶ If the readings are outside these limits then this indicates that there is
a problem with the flue system or combustion circuit, e.g. missing or
dislodged seals.
Fig. 63 Flue integrity test
6.4
COMPONENT ACCESS
To remove the outer case, to gain access to the components:
1. Remove the bottom panel.
2. Release the two screws securing the control panel.
3. Pull down to release the two catches.
4. Pull the bottom of the control panel forward and down.
5. Lower the control panel into the service position
6. Undo and remove the two bottom retaining screws.
7. Lift the spring clips on top of the case.
8. Pull the case towards you to remove.
Fig. 64 Component access
NOTICE:
▶ Ensure that the gas pressure is satisfactory with all
other gas appliances working.
▶ Do not continue with the other checks if the correct
gas pressure can not be achieved.
Flue gas sample point
1
Air inlet sample point
2
Table 10 Key to figure 62
2
1
2
2
1
1
6720643895-67.1Wo
6720646610-33.1W
o
1
6720646610-43.2W
o
1.
2.
3.
6.
7.
5.
4.
