Atmos Multi 24/80, Инструкция по установке и обслуживанию

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ATMOS MULTI version 2002 Page 34
tested by a fully qualified engineer.
Only competent engineers such as a Corgi
registered installer must carry out any service work.
10.1 Boiler pre-service inspection.
The annual inspection of the boiler comprises of the
following:
1.
Visual inspection of the flame
2. The measurement of the O
2
or CO
2
concentration in the flue gas
3.
Measuring the gas rate.
4. Inspecting the ionisation flow.
5. Inspecting the air inlet filter.
6. Inspecting the siphon.
1. Visual inspection of the flame
The flame must be assessed after one minute of
combustion at the low position or high position.
q
Low position
Viewed from top to bottom on the combustion seat
the burner flame picture must have the presence of a
light blue flame.
A completely red flame indicates that the supplied
air/gas mixture is gas rich, an entirely dark blue
flame indicates an air rich mixture.
If the flame picture is correct there is no need to
measure the O
2
or CO
2
concentration of the flue gas
and point 2 of the inspection can be left aside. If the
flame picture is not correct, the O
2
or CO
2
percentage of the flue gas must be measured.
q
High position
Viewed from top to bottom on the combustion seat
the burner the burner flame picture must have the
presence of an entirely blue flame. The air/gas
mixture setting of the high position are determined
by the setting of the low position.
If the flame picture is not correct, the O
2
or CO
2
percentage of the flue gas must be measured.
2. Measuring the O
2
or CO
2
concentration of the
flue gas.
The O
2
or CO
2
measurement of the flue gas must be
undertaken using an analyser calibrated to a
precision of < 0,2%.
Measurements of the flue gas O
2
or CO
2
concentration mu st be taken at both the burner's
low and high input capacity settings. The low input
setting must be the first measurement.
On initial start up the burner fires on high input
capacity prior to reverting to low input capacity for
3 minutes. After which period the burner again
reverts back to high input capacity.
The measured O
2
or CO
2
must fall within the limits
given in table 6.
Table 6. O
2
and CO
2
limits
Note the measured values on the service card
situated in the inside of the appliance. Compare the
new values with those measured when the
appliance was put into operation and/or during the
previous inspections. If the differences between the
two values are considerable, consult the Atmos
Multi Service Manual or contact Atmos Heating
Systems.
3. Measuring the gas rate.
Warning!
Turn off the boiler electrical supply before
removing the appliance casing. The fan, gas
valve, three-way valve and central heating
pump are mains fed with 22OV
Note! The inspection results and any
servicing work undertaken must be noted on
the service card located on the front of the
hot water storage tank insulation shells.