11
level vents would not subject to adverse
weather conditions, ie flooding.
Ventilation requirements for Murelle
HE 110 R ErP boilers and cascade sys-
tems.
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 ceil-
ing)
Installed as a class B appliance (open
flued).
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 generator (120KW net input)
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 generator (120KW net input)
would require 600cm² at high level and
1200cm² at low level.
2.2.2 Outdoors
“MURELLE EQUIPE 220-330-440-
550 BOX ErP” heat modules can also
be installed outdoors with the specific
exhaust for single module code 8089530.
2.3 SYSTEM REQUIREMENTS
The heating system should be flushed
prior to the connection of the heating
modules. The system should be treated
in accordance with BS 7593. Sime Ltd
recommend only the use of Fernox prod-
ucts for the flushing and final treatment
of the system water. This is particularly
important in hard water areas.
It is recommended that the inhibitor
concentration is checked at installation,
system modification and at every service
in accordance with the manufacturers
instructions. Test kits are available from
inhibitor stockist.
WARNING: Failure to clean the heat
system or add an adequate inhibitor
invalidates the device’s warranty.
Gas connections must be made in
accordance with current standards and
regulations. When dimensioning gas
pipes from the meter to the module,
both capacity volume (consumption) in
m
3
/h and gas density must be taken into
account.
System pipe sections must be able to
guarantee sufficient supply to cover max-
imum demand, limiting pressure loss
between the meter and any utility device
no greater than 1.0 mbar for second fam-
ily gas (natural gas).
A sticker inside the module includes
identification and gas type data specific
to the module.
2.3.1 Condensation drain connection
The condensate
drain must be con-
nected to the civil drain by a pipe with
minimum 5 mm per meter gradient for
condensation collection.
Only stainless steel or plastic pipes are
suitable to convey condensate.
Fig. 5
STAFFA TELAIO
CALDAIA
G
M
R
Pmin
Pmax