8
The boiler must be installed in a fixed
location , by qualified engineers in com-
pliance with all instructions contained in
this manual. Furthermore, the installa-
tion must be in accordance with current
standards and regulations.
CAUTION: Before assembling the
appliance, the installer MUST make
sure that the wall supports the weight.
2.1 VENTILATION
“MURELLE HE 110 R ErP” boilers an be
installed in boiler rooms whose size and
requirements meet current regulations.
VENTILATION
The following is provide for your guidance
only, and assumes the ventilation air is
taken directly from outside. The sizes of
the vents may need to be increased in
respect of other appliances installed in
the same area, and seasonal use. Take
care that the position of low level vents
would not subject to adverse weather
conditions, ie flooding.
Ventilation requirements for Murelle HE
110 R ErP boilers and cascade systems.
BS6644 has a requirement that the tem-
peratures in a room or compartment do
not exceed certain levels:-
25°C at floor level(0-100mm)
32°C at mid level (1.5M above the floor level)
40°C at ceiling level (0-100mm from ceiling)
When installed as a class B appliance
(open flued, not roomed sealed).
Installed in a room
High level (within 15% of the room height
from ceiling) - 2cm²/KW of net heat input
Low level (low as possible within 1 metre
from floor natural gas, 250mm LPG)–
4cm²/KW of net heat input
A single Murelle HE 110 R ErP (108 KW
net input) boiler would require 240cm² at
high level and 480cm² at low level.
Installed in a compartment or enclosure
High level (within 15% of the room height
from ceiling) - 5cm²/KW of net heat input
Low level (low as possible within 1 metre
from floor natural gas, 250mm LPG) –
10cm²/KW of net heat input.
A single Murelle HE 110 R ErP (108 KW
net input) boiler would require 600cm² at
high level and 1200cm² at low level.
When installed as a class C appliance
(room sealed).
Installed in a room
High level (within 15% of the room height
from ceiling) - 2cm²/KW of net heat input
Low level (low as possible within 1 metre
from floor natural gas, 250mm LPG)–
2cm²/KW of net heat input
A single Murelle HE 110 R ErP (108 KW
net input) boiler would require 240cm² at
high level and 240cm² at low level.
Installed in a compartment or enclosure
High level (within 15% of the room height
from ceiling) - 5cm²/KW of net heat input
Low level (low as possible within 1 metre
from floor natural gas, 250mm LPG)–
5cm²/KW of net heat input.
A single Murelle HE 110 R ErP (108 KW
net input) boiler would require 600cm² at
high level and 600cm² at low level.
2.2 INSTALLATION
2.2.1 Single boiler
The use of a hydraulic separator or plate
heat exchanger is mandatory. For single
boiler installations a kit 8101587 is avai-
lable See fig 4.
Section 2.5 shows the various fluing
options. PAR 9 must be adjusted accor-
ding to the table shown in each option.
- PAR 9 = See TABLE 1-2-3-3/a.
For INSTALLER PARAMETERS see 3.3
section.
2.2.2 Cascade boilers
(fig. 4/a)
For sequence/cascade installations using
polypropylene smoke collectors with
a clapet valve, every single boiler that
makes up the heating system must have
the following installation parameters
modified
When the boiler is used in cascade, PAR
1 of each boiler in the cascade must be
reset as follows:
2 INSTALLATION
DIP SWITCH
GESTIONE IN CASCATA
12 3
CASCADE MANAGEMENT
DIP SWITCH
GESTIONE IN MODBUS
MODBUS MANAGEMENT
123
ON
123
ON
NOTE:
- The use of a hydraulic sepa-
rator is mandatory.
- When replacing boilers
in existing installations is
recommended to install
a plate heat exchanger to
separate the heating circuit
from the secondary circu-
its. See the available sup-
ply boiler pressure curve
shown in Fig. 14.
Fig. 4
