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

17. Annual Maintenance Cont.
• Make sure the seals are properly seated
in the female ends of the vent pipe with
the fi ns facing the male end of the pipe.
• Reinstall the elbow onto the horizontal
run of the pipe fi rst by simply pushing the
To check the pressure at the venturi device, use the test points (12 on page 10).
• Remove the caps of the pressure test
points and connect a differential pressure
gauge.
• Switch on the boiler
• Compare the value on the gauge with the
minimum values of venturi pressure indi-
cated in the Section 2 on page 9.
Visually inspect all water joints, seals and connections for any evidence of leakage and re-
tighten, 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 37 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 op-
erations in reverse order.
The trap should be serviced once a year dur-
ing the annual service.
RIVA PLUS MANUAL

16.9 Visual inspection of appliance:

16.10 Gas pressures and soundness:

16.11 Condensate trap:

parts together.
• Push the vent adapter down onto the top
of the boiler and reinstall the four Phillips
head screws.
Figure 16.5
Figure 16.6
43