Installation - Sime MURELLE HE 35 R M Manual Del Usuario

2

INSTALLATION

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-
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 curve for the boiler supply
shown in figure 14.
80
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)
450
M2 R3
M
R
170
140
330 60
ON
x 2
1 2 3
ON
1 2 3
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.
340
C.H. flow
M
R 2" (UNI-ISO 7/1)
C.H. return
R
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)
123
DIP SWITCH
GESTIONE IN CASCATA
CASCADE MANAGEMENT
DIP SWITCH
GESTIONE IN MODBUS
MODBUS MANAGEMENT
Fig. 4
Fig. 4/a