O Primary Heat Exchanger; Function; Removal; Cleaning - Biasi RIVA COMBI Service Manual

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Third Part
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Primary Heat Excanger

1) Function

2) Removal

3) Cleaning

1 Function
The primary heat exchanger A in Figure 1 has
the function of transferring heat produced from
combustion of the gas to the water circulating in
it.
The hydraulic circuit is composed of 8 elliptical
pipes connected in parallel (Figure 2).
2 Removal
1) Remove the case panels.
2) Empty the primary circuit.
3) Remove the sealed chamber lid.
RIVA COMBI SERVICE MANUAL – REV A
A
Figure 1
Figure 2
(edition-0106)
4) Remove the side panel B of the combustion
chamber by unscrewing the screws C (figure
3).
5) Remove the screws and the deflector D.
6) Remove the clips E (Figure 3).
C
B
7) Loosen the connection F, rotate to the left and
then move downwards the pipe G freeing it
from the connection of the primary heat
exchanger (Figure 4).
G
F
8) Loosen the connection H (Figure 4)
9) Loosen the connection L (Figure 5) and move
downwards the pipe I (Figure 4) freeing it
from the connection of the primary heat
exchanger.
Primary Heat Exchanger
Figure 3
Figure 4
E
M
D
M
I
H
2-1