Joints; Mounting The Boiler; Fitting The Flue System - Biasi Riva Plus HE M296.24SM User Manual And Installation Instructions

6.5

Joints

Functions
Gas, c.h. return, c.h. flow
D.c.w. inlet
D.h.w. outlet
Pressure relief valve
Condensate drain
sizes in mm o.d.
6.6

Mounting the boiler

• Take the protective caps off the boiler
pipework.
• Thoroughly clean the connections.
• Mount the boiler on its bracket.
• Fix the c.h. valves A and gas cock B (¾") to
the boiler using the ¾" gaskets (Fig. 6.3).
• Fix the ø 22 mm pipes C (c.h. circuit) to the
c.h. valves A and the ø 22 mm pipe D (gas)
to the cock B using the ¾" gaskets.
• Repeat the above procedure for the d.c.w.
inlet utilising the ½" cold water inlet valve
J, the ø 15 mm copper tail E with its con-
nection nut and two ½" gaskets.
• Fix the ø 15 mm copper tail F with the ½"
connection nut and a ½" gasket.
C
A
b
J
Fig. 6.3
• Connect the pipe G (Fig. 6.4) from the
pressure relief valve to the safety dis-
INSTAllATIoN
Pipe sizes
(o.d)
ø 22
ø 15
ø 15
ø 15
ø 25 (plastic)
D
F
E
C
A
charge pipework.
• Fit the condensate drain 11 (Fig. 6.4) in the
air brake connected to the drainage pipe-
work. See also section "Condensate drain"
to page 33.
G
Fig. 6.4
6.7

Fitting the flue system

Refer to the assembly instructions contained
within the chosen flue kit packaging for the
correct assembly and installation.
In general, it has to be taken in considera-
tion that the horizontal sections of the flue
pipe must have an horizontal sloping not
less than 1.5 deg. (25 mm per metre) to-
wards the boiler.
In the standard horizontal flue kit the flue
pipe is angled within the air duct therefore
the air duct must be horizontally installed.
Fig. 6.5
If one or more extensions have to be used
they must be adequately supported so that
11
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