Biasi Riva Combi Installation & Operation Instructions page 27

plastic bag in the boiler package.
B
A
C
Installation:
• Remove the
protective caps off
boiler connections
(Figure 10.1).
• Thoroughly clean the
connections.
• Attach the supplied
components to the
boiler connections
(see Figures 10.1).
Be sure to
RIVA COMBI MANUAL - REV B
H
D
Figure 10.1
use the proper
gaskets for the pipe
connections.
• Before connecting the
boiler to the heating
system piping, review
the suggested piping
diagrams in Section 4
(page 12).
G
F
I J
E
A) Stainless steel gas
pipe
B) Main circuit drain
cock
C) C.h. return copper
pipe
D) C.h. supply copper
pipe
E) D.h.w. inlet copper
pipe
F) D.h.w. drain cock
G) D.h.w. expansion
vessel pipe
H) D.h.w. outlet copper
pipe
I) D.h.w.PRV discharge
copper pipe
J) C.h. PRV discharge
copper pipe
• If the c.h. system is
above the boiler level,
it is advisable to
install c.h. cocks
close to the boiler for
servicing operation
26