Sime murelle HE 35 R, Installer'S Instructions

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The boiler must be installed in a fixed loca-
tion and only by specialized and qualified
firms in compliance with all instructions
contained in this manual.
Furthermore, the installation must be in
accordance with current standards and
regulations.
2.1 INSTALLATION
2.1.1 Single boiler
(fig. 4)
– Boilers can be installed in all domestic envi-
ronments without any whatsoever limit in
terms of location and comburent air supply.
– These boilers can also be installed in par-
tially covered areas, as per EN 297, with a
maximum ambient temperature of 60°C
and a minimum ambient temperature of -
5°C. It is generally advisable to install the
boilers below weathered roofs, on the bal-
cony or in a protected niche, to protect
them from exposure to weathering agents
(rain, hail and snow). All boilers provide a
standard antifreeze function.
A single function compensator kit is availa-
ble upon request: cod. 8101547.
The kit is for use on an accumulating boiler
with capacity equal to or greater than 80
litres.
2.1.2 Sequence/cascade boilers
(fig. 4/a)
In the event of sequence/cascade installa-
tion, you must modify for every single boiler
of the main unit the following installing
parameters:
-
PAR 1 = 4
(for G20 NATURAL GAS boilers)
- PAR 1 = 12
(for G31 PROPANE boilers)
Refer to section 3.3 to access the INSTAL-
LER PARAMETERS section.
ATTENTION: In sequence/cascade instal-
lations, it is mandatory to arrange the
thermal system with the hydraulic sepa-
rator and safety devices.
The boiler is provided with the board RS-
485 that permits to manage up to 8 boilers
in cascade and communication in MODBUS.
The board is placed on the back of the con-
trol panel.
Access the board and chose the desired
operating mode (CASCADE or MODBUS) by
selecting the DIP SWITCH of the board as
indicated in figure 4/a.
CASCADE mode (fig. 4/b)
Electrically connect all the boilers that form
the modular cascade thermal system and
set installer parameters PAR 15 on every
single boiler as indicated in fig. 4/b.
2 INSTALLATION
x 2
R M
M2
R3
170 140
60 330
123
12
3
450 340
70
1
262
56
4
Fig. 4
DIP SWITCH
GESTIONE IN CASCATA
CASCADE MANAGEMENT
1 2 3
ON
1
2
3
DIP SWITCH
GESTIONE IN MODBUS
MODBUS MANAGEMENT
1 2 3
ON
Fig. 4/a
Single installation
with kit optional code 8101547
WARNING:
- It is mandatory to arrange the thermal
system with the hydraulic separator.
- When replacing one or more boilers in exi-
sting plants, it is advisable to install a
heat exchanger to separate the boiler cir-
cuit from the secondary circuits. See the
pressure cur ve for the boiler supply
shown in figure 14.
M C.H. flow
R 2” (UNI-ISO 7/1)
R C.H. return
R 2” (UNI-ISO 7/1)
M2 D.H.W. tank flow
G 3/4” (UNI-ISO 228/1)
R3 D.H.W. tank return
G 3/4” (UNI-ISO 228/1)