Potterton iHE 100/300, Installation And Servicing Instructions

Page: 15 / 40

iHE 13
Fig 3.3
C
13
AND C
33
FLUE TERMINAL ARRANGEMENTS
Clips every
1000 mm
R
OOM
S
EALED
F
LUE
(T
YPE
C
XY
)
There are three approved room sealed arrange-
ments where both the air inlet and
fl ue discharge
terminate outside the building.
T
YPE
C
13
& C
33
F
LUE AND AIR DUCTS TERMINATE
EITHER HORIZONTALLY OR VERTICALLY IN THE SAME
POSITION
Flue and air ducts are supplied to a concentric
design (130/200mm). See Fig 3.5 for component
choices. Flues should slope back to the Heater by
3 degrees.
Terminal positions must comply with the require-
ments detailed in Fig. 3.4, page 13.
V
ENTILATION
R
EQUIREMENTS
(T
YPE
C
13,
C
33
& C
53
)
Where the appliance is installed in a ROOM or
COMPARTMENT no additional ventilation is re-
quired.
MAXIMUM FLUE LENGTHS
The combustion fan fi tted to the appliance moves
the air and fl ue products through the system and
can provide suf fi cient capacity for a Flue Equiva-
lent Length ( FEL ) of 18 metres for type C
13
and
C
33
systems and 30 metres for type B
23
system.
Each fl ue accessory such as bends and straight
lengths restrict the fl ue system and have a FEL
which must be added together to determine the
total.
Referring to the diagrams ( Fig 3.5 & 3.6) select a
suitable fl ue system for the particular installation
requirement and then calculate the FEL of the
system, this must not be greater than that stated
above.