17
INSTALLATION
2.4.1
Recommended minimum distances
This figure shows the minimum installation distances that must
be respected in order to allow proper maintenance of the boiler.
≥ 1 m
≥ 1 m
≥ 1 m
≥ 0,5 m
≥ 0,5 m
2.5
Installation in older systems and systems
requiring modernisation
When installing these boilers in older systems or systems requir-
ing modernisation, always perform the following checks:
− Make sure that the flue is able to withstand the temper-
ature of the combustion gases and that it has been de-
signed and made in compliance with applicable stand-
ards. The flue must also be as straight as possible, sealed,
insulated and not blocked or choked
− Make sure that the electrical supply system has been in-
stalled by a qualified electrician in compliance with ap-
plicable standards
− Make sure that the fuel feed line and any storage tank
are made and installed in compliance with applicable
standards
− Make sure that expansion vessels are big enough to con-
tain the additional volume generated by thermal expan-
sion
− Make sure that the flow rate, head and direction of flow
of the pumps are suitable and correct
− Make sure that the central heating circuit has been
flushed out to remove all sludge and lime scale, and that
it has been bled and seal tested
− Make sure that a suitable water treatment system is in-
stalled if the quality of the supply/recirculation water so
demands. (Refer to the reference values on page 23); See
R
’s Catalogue
9
The manufacturer declines all responsibility for damage
caused by incorrectly constructed flue systems.
2.6
Water connections
The following table gives the dimensions and positions of the
water fittings for
INSIEME EVOe 25 B/70 LN
boilers.
Before installing the boiler, flush out all the pipes of the central
heating circuit to remove any machining residues.
MI
RI
A
B
C
I
D
F
E
G
H
UAC
PRS
EAF
Sf
SC
Scs
DESCRIPTION
INSIEME EVOe 25
B/70 LN
A
1237
mm
B
1037
mm
C
48
mm
D
90
mm
E
220
mm
F
470
mm
G
687
mm
H
1076
mm
I
38
mm
MI
(system delivery line)
1” M
Ø
RI
(system return line)
1” M
Ø
UAC
(domestic hot water outlet)
3/4” M
Ø
DRP
(domestic recirculation preset)
3/4” M
Ø
EAF
(domestic cold water inlet)
3/4” M
Ø
SC
(safety valve drain)
21
Ø
mm
Sf
(automatic drain valve drain)
11
Ø
mm
Dsd
(domestic safety valve drain)
21
Ø
mm
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