VENTILATION
1
. Where the appliance is installed in a cupboard or
compartment, no air vents are required.
2. BS
5
440:
P
art 2 refers to room sealed appliances
installed in compartments. The appliance will run
sufficiently cool without ventilation.
1.5 Flueing
This is a “room sealed” condensing boiler. Flue
systems are supplied in
k
its, or components can be
ordered individually from
P
otterton. Only
P
romax Store
flue components (which are designed for condensing
operation) can be used.
Flue Systems
All boilers are supplied to accept either the concentric
horizontal flue system or the
P
romax
8
0 mm dia. twin
flue system, however several flue system options are
available.
Each system is room sealed and offers a choice of
flue type and termination method, (pages
15
&
1
6).
•
C
oncentric balanced flue with horizontal terminal
• Twin flue with vertical terminal *
Flue extension lengths and bends should be
purchased separately, as required.
*
These terminals must be ordered/specified separately.
If floor settlement is li
k
ely due to the weight of the
boiler, ensure that both the flueing and pipewor
k
layouts safely provide sufficient flexibility.
If the boiler is to be fitted in a room containing a bath
or shower reference must be made to the relevant
requirements.
In GB this is the current I.E.E. Wiring Regulations and
Building Regulations.
In IE reference should be made to the current edition
of I.S.
81
3 "Domestic Gas Installations" and the
current ET
C
I rules.
1.4 Compartment Installation and
Ventilation
General guidance for cupboard/compartment
installations, including airing cupboards, is contained in
BS 6
7
9
8
. Specific requirements for
P
romax 24 Store
are given below.
1
. The compartment should be a fixed rigid structure
large enough to allow it and the boiler to be
inspected and serviced. A minimum width between
the door jambs of
57
0 mm must be provided.
2. Minimum clearances are indicated in Fig.3. A full
height compartment door must be at least
15
mm
from the front of the boiler and provide 200 mm
access height above the boiler.
3. Householders should be discouraged from storing
clothes etc. on the boiler itself. A removable shelf at
least
75
mm above the boiler is acceptable.
4. The internal surfaces of an understairs cupboard
must be lined with non-combustible materials. The
door shall have a BS 4
7
6 fire resistance of not less
than 0.
5
hour.
1
2
© Baxi Heating UK Ltd 2015