SI S
9
EN
cod. 3541A750 - 05/2011 (Rev. 00)
3.3 Plumbing connections
Important
B
Before making the connection, check that the unit is arranged for operation with
the type of fuel available and carefully clean all the system pipes.
Carry out the relevant connections according to the cover diagram and the symbols giv-
en on the unit .
System water characteristics
In the presence of water harder than 25° Fr (1°F = 10ppm CaCO
3
), use suitably treated
water in order to avoid possible scaling in the water heater.
3.4 Gas connection
The gas must be connected to the respective union (see figure on cover) in conformity
with the current regulations, with a rigid metal pipe or with a continuous flexible s/steel
tube, installing a gas cock between the system and water heater . Make sure all the gas
connections are tight.
3.5 Electrical connections
Important
B
The unit must be connected to an efficient earthing system in conformity with
the current safety standards. Have the efficiency and suitability of the earthing
system checked by professionally qualified personnel; the Manufacturer de-
clines any liability for damage caused by failure to earth the system.
The water heater is prewired and provided with a "Y" type cable (without plug)
for connection to the electric line . The connections to the grid must be made
with a permanent connection and equipped with a double-pole switch with con-
tact gap of at least 3 mm, interposing fuses of max. 3A between the water heat-
er and the line . Make sure to respect the polarities (LINE: brown wire /
NEUTRAL: blue wire / EARTH: yellow/green wire) in connections to the electric
line.
B
The unit's power cable must not be changed by the user. If damaged, turn the
unit off and have the cable replaced by professionally qualified personnel. In
case of replacement , only use
"HAR H05 VV-F"
3x0.75 mm2 cable with max.
external diameter of 8 mm.
3.6 Fume ducts
Important
The unit is a "C type" with sealed chamber and forced draught, the air inlet and fume out-
let must be connected to one of the following extraction/suction systems. The unit is ap-
proved for operation with all the
Cny
flue configurations given on the dataplate. Some
configurations may be expressly limited or not permitted by law, standards or local reg-
ulations. Before installation, check and carefully follow the instructions. Also, comply with
the instructions on the positioning of wall and/or roof terminals and the minimum distanc-
es from windows, walls, ventilation openings, etc.
Baffles
Unit operation requires fitting the baffles supplied. Make sure the right baffle (when used)
is fitted and correctly positioned.
A
Baffle replacement with
unit not installed
Connection with coaxial pipes
fig. 5 - Examples of connection with coaxial pipes (
= Air /
= Fumes)
Table. 1 - Typology
For coaxial connection, fit the unit with one of the following starting accessories. For the
wall hole dimensions, refer to the figure on the cover.
fig. 6 - Starting accessory for coaxial ducts
Table. 2 - Baffles for coaxial ducts
Connection with separate pipes
fig. 7 - Examples of connection with separate pipes (
= Air /
= Fumes)
Table. 3 - Typology
For connection of the separate ducts, fit the unit with the following starting accessory:
fig. 8 - Starting accessory for separate ducts code 010031X0
Type
Description
C1X
Wall horizontal exhaust and inlet
C3X
Roof vertical exhaust and inlet
A
1
2
C
1X
C
1X
C
3X
C
3X
C
3X
C
1X
Coaxial 60/100
Coaxial 80/125
Max. permissible length
4 m
10 m
Reduction factor 90° bend
1 m
0.5 m
Reduction factor 45° bend
0.5 m
0.25 m
Baffle to use
0 ÷ 2 m
Model
SI 11 S
= Ø43
SI 14 S
= Ø50
SI 17 S
= Ø50
0 ÷ 3 m
Model
SI 11 S = Ø43
SI 14 S
= Ø50
SI 17 S
= Ø50
2 ÷ 4 m
no baffle
3 ÷ 10 m
no baffle
Type
Description
C1X
Wall horizontal exhaust and intake. The inlet/outlet terminals must be concentric or close enough to be
undergo similar wind conditions (within 50 cm)
C3X
Roof vertical exhaust and intake. Inlet/outlet terminals like for C12
C5X
Wall or roof exhaust and intake separate or in any case in areas with different pressures. The exhaust
and intake must not be positioned on opposite walls.
C6X
Intake and exhaust with separately certified pipes (EN 1856/1)
B2X
Intake from installation room and wall or roof exhaust
IMPORTANT - THE ROOM MUST BE PROVIDED WITH APPROPRIATE VENTILATION
010006X0
010007X0
68
11
8
100
60
45.6
100
60
C
5x
C
3x
B
2x
C
1x
max 50 cm
120
82
136
82
