Visual Inspection Of Appliance; Gas Pressures And Soundness; Condensate Trap - Biasi Riva Plus Installation And Operation Instructions Manual

17. Annual Maintenance Cont.
Make sure the seals are properly seated
•
in the female ends of the vent pipe with
the fins facing the male end of the pipe.
Reinstall the elbow onto the horizontal
•
run of the pipe first by simply pushing
To check the pressure at the venturi device, use the test points (12 on page 11).
Remove the caps of
•
the pressure
points and connect a
differential pressure
gauge.
Switch on the boiler
•
Visually inspect all water joints, seals and connections for any evidence of leakage and
retighten, grease or replace them as necessary.
Check appliance for gas soundness. Recheck operational pressures and adjust as necessary
as described in Section 15.4 page 32 of this manual.
To clean the condensate trap:
Remove the front and right case panels.
•
Disconnect the trap from the drain pipe.
•
Using pliers, remove the spring D moving it
•
upwards.
Disconnect the wirings from the trap.
•
• Reassemble carrying out the removal
operations in reverse order.
The trap should be serviced once a year during
the annual service.
46 Riva Plus Manual
17.8 Checking the flue:
Compare the value on
•
test the gauge with the
minimum values of
venturi pressure
indicated in the Section
2 on page 10.

17.9 Visual inspection of appliance:

17.10 Gas pressures and soundness:

17.11 Condensate trap:

the parts together.
Push the vent adapter down onto the
•
top of the boiler and reinstall the four
Phillips head screws.
FIG. 17.6
Venturi test
points
Figure 17.5