QHT RIVA FP Service Instructions Manual page 42

Third Part
1 Function
The By---pass valve A in Fig. 1 is located between the
changer if the circulation acrossthe c.h. system iscom-
pletely closed.
erter group.
Fig. 1
RIVA FP SERVICE MANUAL - REV A
(edition-0106)
A
Removal
2
Warning: isolate the boiler from the mains
electricity supply before removing any
covering or component.
1 Remove all the case panels.
2 Empty the primary circuit of the boiler.
3 Remove the diverter group as described in the
section 8.4 of this manual.
4 Unscrew the connector B and remove the by---
pass valve C (Fig. 2).
B
C
Fig. 2
5 Reassemble the by---pass valve as illustrated in
Fig. 2 reversing the order of removal.
By---pass valve
12 -1