Adjusting And Setting O Limits - Riello Array AR 800 Installation And Operation Manual

Fig. 15 NG mixer removal
− remove screws (3) in order to get out the mixer
Fig. 16 NG mixer removal
− connect the LPG mixer (4) to the fan, putting in the O-ring
(5) and screws (6)
Fig. 17 LPG mixer installation
− reassemble the fan unit and the mixer by reversing the
previous operations.
− Use the PB inner display to enter the appliance configuration
menu and change the parameter #98 from ''80'' to
''81''. Follow this path: menu-> setting -> appliance ->
configuration -> password -> boiler -> managing -> 98
appliance setting (from ''80'' to ''81'') -> configuration
confirmed (''yes''). Repeat the same sequence for each
dependent module.
− Adjust the O parameter as explained in next chapter
2
− Affix the gas type label from the gas conversion kit to the
appliance.
− Repeat above process for all heat exchangers.
4.12.5 Adjusting and Setting O
− Insert a combustion analyzer probe into the test port
shown in Fig. 18;
− Go to the Touchscreen and access the Module screen (as
described on "6.3.4 Module Screen" page 35) relevant to
the module under analysis;
− Press "MODULE TEST" button;
− Press "HIGH POWER" button.
Wait 2 or 3 minutes to reach steady state conditions and record
the O value.
2
Test port of
the module
Fig. 18 Test Port for Combustion Analysis (available on each
individual heat exchanger)
To adjust the O value at high-fire turn the screw "A" (rotate
2
counter-clockwise to decrease O
wrench is necessary for this adjustment.
Verify that the value of O is stable and within the range indicated in
2
the following table (be careful to make small changes and confirm
that the value is stable before making additional adjustment).
21
INSTALLATION
Limits
2
) shown in Fig. 19. An allen type
2