GREENSTAR 12Ri ErP, Installation, Commissioning And Servicing Instructions

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SERVICE AND SPARES
Greenstar Ri ErP - 6 720 813 283 (2015/07) 34
7.2 CHECKING GAS INLET PRESSURE
Refer to section 6.5.1 for checking the gas inlet pressure
7.3 CHECKING FLUE INTEGRITY
The integrity of the flue system and performance of the boiler can be
checked via the flue turret sample points.
Fig. 50 Flue test points
▶ With the boiler case on and the boiler running at maximum.
▶ Insert the analyser probe into the air intake test 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. 51 Flue integrity test
7.4 FAN PRESSURE TEST
SETTING THE BOILER TO MAXIMUM
1. Remove the three screws retaining the control cover.
2. Remove the control cover.
3. Remove the plastic tool clipped inside the cover.
4. Insert the tool into the switch.
5. Using the tool set the mode switch to maximum output.
Ensure the boiler is powered up and there is a demand from the external
controls.
The power indicator will flash and the boiler will stay in this mode for 15
minutes if no further change is made to the switch.
Fig. 52 Setting the boiler to maximum
NOTICE:
▶ Do not continue with the other checks if the correct
gas inlet pressure can not be achieved.
Flue gas sample point 1
Air inlet sample point 2
Table 29 Key to figure 50
2
1
2
2
1
1
6720643895-67.1Wo
6720644744-37.1W
o
This test is to determine if the heat cell requires
cleaning/attention.
1.
2.
6720644744-31.1Wo
3.
MAX
MIN
NORM
MAX
MIN NORM
4.
5.