Checking The Pressurization In The Expansion Vessel; Cleaning The Burner; Drain Pipe Inspection; Visual Inspection Of Appliance - Biasi Riva Advance Combi Installation & Operation Instructions

17. Annual Maintenance Cont.
rear side of the connector (Fig. 17.7).
M
If you notice dirt on the coil of the condensing
L
heat exchanger (24 on page 10) brush out it
with a bristle paintbrush and remove the dust
with a vacuum.
Reassemble the parts carrying out the
removal operations in reverse order.
Figure 17.7 (rear view of the fan)

17.7 Checking the pressurization in the expansion vessel:

Empty the central heating systemas described in section 17.3 of this chapter and check that
the pressure in the expansion vessel is not less than 14 psi (1 bar).
See also section 13.2 page 40 of this manual.
If the pressure is lower, take steps to correct the pressure level.

17.8 Cleaning the burner:

with a bristle paintbrush.
To reach the burner do the operations described in the section 17.6 of this manual.
checked periodically, at least once a year. During the check, the intake and exhaust screens
should be cleaned of any built up debris. To reassemble the vent follow the assembly instructions
supplied with the venting system. All gaskets used in the assembly are reusable, however if any
need to be replaced, they must be OEM replacements. Silicon lubricant can be used to ease the
reassembly of the vent system.

17.10 Drain pipe inspection:

Check the soundness and integrity of the condensate drain pipe.

17.11 Visual inspection of appliance:

Visually inspect all water joints, seals and connections for any evidence of leakage and
retighten, grease or replace them as necessary.

17.12 Gas pressures and soundness:

Check appliance for gas soundness. Recheck operational pressures as described in section
15.5 page 48 of this manual.
RIVA ADVANCE COMBI MANUAL 60