10
R
M
M2 R3
170 140
60
330
123
123
450 340
701
262
564
R
M
M2 R3
170 140
60
330
123
123
450 340
701
262
564
MURELLE HE 35 R UK
MURELLE HE 35R
Fig. 4
x 2
CN10
CHIAVE
POLARIZATION
Fig. 4/a
2 INSTALLATION
Single installation
with kit optional code 8101585
WARNING:
-
It is mandatory to arrange the thermal system with
the hydraulic separator.
-
When replacing one or more boilers in existing
plants, it is advisable to install a heat exchanger
to separate the boiler circuit from the secondary
circuits. See the pressure curve 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)
The boiler must be installed in a fixed
location and only by qualified engineers in
compliance with all instructions contained
in this manual.
Furthermore, the installation 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 35 R ErP can be installed
in boiler rooms whose size and require-
ments meet current regulations.
VENTILATION
The following is provide for your guidan-ce
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 wea-
ther conditions, ie flooding.
Ventilation requirements for Murelle HE
35 R (M) 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 35 R ErP
P (34.8 KW
net input) boiler would require 70 cm²
at high level and 140 cm² at low level.
Installed in a compartment or enclosure
High level (within 15% of the room height
from ceiling) - 5 cm²/KW of net heat input
Low level (low as possible within 1 metre
from floor natural gas, 250 mm LPG) – 10
cm²/KW of net heat input.
A single
Murelle HE 35 R ErP
(34,8 KW net
input) boiler would require 174 cm² at high
level and 348 cm² 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 35 R ErP
(34,8 KW net
input) boiler would require 70 cm² at high
level and 70 cm² 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 35 R ErP
(34,8 KW net
input) boiler would require 174 cm² at high
level and 174 cm² at low level.
