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O Above the roof pitch with roof
slope less than or equal to 30°
O Above the roof pitch with roof
slope more than 30°
P From wall face
Q From, above or to side of an
opening
* Wherever practicable to do so, the flue
should be extended beyond the perim-
eter of the balcony
** Consideration should be given to adding
protection against condensate to the ad-
jacent structure
*** Wall terminals with horizontal discharge
less than 2.5 m from a car parking space
and less than 2,1 m above the ground.
Wall terminals less than 2,1 m above the
ground with horizontal discharge of the
flue products across a public footway, or
a frequently used private access route,
or a patio (hard surface area).
5.4
Gas supply
The Gas meter is connected to the service
pipe by the local gas region or a local gas
region contractor.
If the gas supply for the boiler serves other
appliances ensure that an adequate supply
is available both to the boiler and the other
appliance when they are in use at the same
time.
Pipework must be of adequate size. Pipes
of a smaller size than the boiler inlet con-
nection should not be used.
Installation pipes should be fitted in accord-
ance with BS 6891 and the complete instal-
lation should be tested for tightness.
For Ireland (IE), refer to I.S.813.2002.
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- 38 -
GENERAL REQUIREMENTS
350
600
600
300
5.5
Air supply
The room in which the boiler is installed does
not require a purpose provided air vent.
5.6
Ventilation
If installed in a cupboard or compartment, it
is not necessary to provide additional venti-
lation for cooling for this particular product.
However consideration must be given to
clearance requirements for maintenance
(section "Precautions for installation" to
page 42) and under no circumstances must
stored articles be allowed to come into con-
tact with the boiler or flue pipe.
5.7
Condensate drain
Ensure that the condensate discharge com-
plies with the national or local regulations
in force.
The condensate pipe must be fitted in ac-
cordance with Building Regulations.
Drain pipe material should be resistant to
acid as the condensate is slightly acid with
a pH less than 6.5.
The boiler includes a trap (26 on page 23)
that prevents the combustion products en-
tering the drain.
The boilers incorporate a condensate trap
with a 75 mm seal to comply with BS 6798:
2008.
The schematic diagrams of possible con-
nections are given in Fig. 5.2 and Fig. 5.3.
The length of the condensate pipe should
be kept to a minimum, any external pipe
should not be more than 3 m in 32 mm pipe
and insulated to prevent freezing.
To avoid condensate being trapped:
• the drain pipe should be run with a fall of
at least 2.5° (45 mm/m) away from the
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