Rendamax R2000 Series, Техническая документация инструкция

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36
DOC2012/2000en
d) Connect a pressure gauge to the main burner manifold, test point 10/4 and re-connect the
electrical connections from the main safety shut off valves into the front electrical panel.
Switch the on/off switch to on and the boiler will ignite in the sequence described in a) above with
the main burners igniting from the pilot burner at minimum rate.
Check ignition of the main burners is smooth. Observe that the modulating air damper opens and the
gas rate increases to maximum. Check the main burner pressure on maximum is as indicated in
table 8a or 8b and adjust if necessary.
Check all pipework and connections downstream of the safety shut off valves for gas leaks
with a suitable leak detection fl uid.
Switch off the boiler, remove pressure gauge and close the test point.
e) Remove the RH upper side panel and within the control panel remove the test link for the flame
detection (see wiring diagram) and connect a A-meter (0 - 50 A =) in series with the flame detection
circuit (see fig. 21). While measuring ionisation the main burner should stay switched off.
To do this, disconnect the main gas valve by breaking the electrical connection by removing the
plug (4a). Remove the ionisation plug (5). Connect the black wire (-) (A) of the A-meter with the
lowest contact in the plug (B) (see fig. 21). Connect the red wire (+) (C) of the A-meter with the
lowest contact in the ionisation socket (D). The ionisation of the pilot burner must show a minimum
of 5 A during 10 seconds after which the burner falls into flame detection lockout. Wire the main
gas valve back to its originally conditions. Repeat the test by starting the boiler to maximum operation.
Check that the A-meter reads at least 5 A after 10 seconds.
f)
With the gas train cover closed switch on the boiler. Check for spillage of products of combustion
from the draught diverter opening with a smoke detector or other suitable apparatus, ensuring that
any openable windows, doors etc., fitted in the boiler space are shut and any extraction fans are
operating. Spillage checks should be done with the boiler cold and when the system has heated up,
both on maximum and minimum rates.
g) Re-check the main burner pressure at maximum and by modulating the damper down also check the
main burner pressure at minimum against that indicated in table 8a or 8b, adjust if necessary at the
main burner governor. Check this against a gas rate reading at the installation gas meter.
h)
Check the operation of the water flow switch by gradu ally closing down one of the boiler
isolating valves. The boiler should go to lock-out.
i)
Check that the pump overrun is operating correctly when the boiler is switched off and that
any time controls are operational.
E
Fig. 21 Measuring ionisation