Connection Options; Inlets/Outlets; Other Requirements; Single Boiler Conventional Flue - REMEHA Gas 310 ECO Technical Information

Type C33: Room sealed appliance, connected to com-
bined roof outlet.
Type C43: Room sealed appliance in cascade configu-
ration, connected via two ducts to a common duct sys-
tem serving more than one appliance.
Type C53: Room sealed appliance, connected to sepa-
rate ducts for the air supply and flue gas discharge, ter-
minated in zones of different pressure.
Type C63: Room sealed appliance, supplied without the
terminal or the air supply and flue gas discharge ducts.
Type C83: Boiler with room sealed operation, connected
to separate air supply and flue gas discharge duct, with
flue gas discharge duct always in depression.
Conventional flue or room ventilated installations:
A room-ventilated boiler takes the required combustion
air from the plant room. Combustion air for the boiler
must be provided to the room/ compartment in accord-
ance with BS 6644. A table showing the maximum
discharge lengths for the room ventilated version of the
Remeha Gas 310 ECO can be found in section 7.3.6.
Room sealed installations:
It is unnecessary to provide separate combustion air to
the room/compartment as this is supplied direct to the
boiler via the eccentric flue and air inlet system to the
vertical terminal unit (see fig. 09, VRS 200/250 options
available from Broag).
Additional ventilation will be required to the room/com-
partment in accordance with BS 6644 (compartment
ventilation).
For installations where supply and discharge points are
in two different pressure zones CLV system please con-
tact Broag Technical Dept. for further details and
Note: The boilers can also be installed on a flue dilu-
tion system, but must incorporate a total flue break to
avoid boiler gas/air ratio controls being affected by the
flue dilution fan pressures. For full details please contact
Broag.
A table showing maximum air supply/ flue gas discharge
lengths for the room sealed version of the Remeha Gas
310 ECO can be found in section 7.3.7.

7.3.3 Connection options

The Remeha Gas 310 ECO is available in a room venti-
lated and a room sealed version. If the room-sealed ver-
sion is used, the grille must be removed before installing
the air supply pipe.

7.3.4 Inlets/Outlets

For conventional flue systems the flue terminal exit point
should discharge vertically and be c/w a tapered cone
and bird guard. For room sealed options use the Broag
VRS 200/250 vertical terminal.
62560.indd 15 62560.indd 15

7.3.5 Other requirements

Flue gas discharge materials:
Single wall, rigid: stainless steel, thick-walled aluminium
Flexible:
Flue gas discharge structure:
The flue gas discharge pipe must have airtight and
watertight joints and connections and should be seam-
less. Horizontal sections in the flue gas discharge pipe
must slope down towards the boiler (at least 5-cm per
meter).
Flue liners:
If flue liners are used they must be manufactured from
stainless steel or flexible plastic (continuous temperature
rating of 120 o C) and be gas and water tight.
Air supply materials:
Single wall, rigid or flexible: aluminium, stainless steel.
Air supply structure:
The air supply pipe must also be airtight. Horizontal sec-
tions in the air supply must slope away from the boiler
towards the supply opening and incorporate a drain con-
nection if the route rises from a lower point that could
flood.

7.3.6 Single boiler conventional flue

advice.
fig. 07 Flue gas discharge duct without bends, single
boiler, conventional flue.
00.31H.79.00011 (afb 1)
15
(to comply with building regulations).
stainless steel (to comply with building
regulations).
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