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Worcester-Bosch Greenstar Danesmoor Utility Regular - Utility System Manual

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Pre-Installation
Greenstar Danesmoor Utility 2022+ and Utility System 2022+ - 6 721 846 263 (2022/01) 19
Rooms containing a bath or shower
Refer to figure 24, the boiler must not be installed in zones 1 or 2.
The boiler can be installed outside the shaded areas.
Fig. 24 Bathroom zones
[2*] Without end wall, zone 2 must extend 600mm from the bath
[*] 600mm radius from the bath or shower
4.8 Flue gas system considerations
Room air dependant operation
The boiler primarily operates as a “room air sealed” unit, however the
boiler can be operated as a “room air dependant” unit, if required.
Provide sufficient boiler room ventilation when operating the appliance
room air dependent.
▶ Do not obstruct or block any ventilation openings.
▶ Ventilation openings must always be kept clear.
4.8.1 Combustion air quality
To avoid corrosion, combustion air must be free from aggressive
substances (e.g. hydrogen halide, chlorines and fluorine).
4.8.2 Flue terminal positions
• Flue terminals must be positioned to avoid combustion products
entering into buildings.
• The flue must be fitted and terminated in accordance with the
recommendations of the latest version of BS 5410:1.
• The flue must not cause an obstruction.
• Discharge from the flue outlet must not cause a nuisance or dispute.
• Flue gases have a tendency to plume and in certain weather
conditions a white plume of condensation will be discharged from the
flue outlet which could be regarded as a nuisance, for example, near
security lighting.
• There should be no restriction preventing the clearance of
combustion products from the terminal.
• The air inlet/outlet duct and the terminal of the boiler must not be
closer than 25mm to any combustible material. Detailed
recommendations on protection of combustible materials are given
in the latest version of BS 5410:1.
• Where a vertical flue terminates in an area that is enclosed on 3 sides,
the flue must be no more than 1,000mm below the lowest roof line.
You must ensure that all clearances are maintained and that products
of combustion disperse safely from the area.
• Dimensions from a flue terminal to a fanned air inlet to be determined
by the ventilation equipment manufacturer.
• A protective stainless steel terminal guard, must be fitted if the
terminal is 2 metres or less, above a surface where people have
access.
• See “Contact Information” on the back cover for flue guard
information.
WARNING: Conventional flues
▶ Conventional flue boilers must not be installed in a
bathroom
WARNING: Electric shock
▶ Any switch or appliance using mains electricity must
not within reach of a person using the bath or shower.
In all cases the installation must be in accordance with
the latest amendments in the latest edition of the IET
wiring regulations (BS7671)
6720646608-124.4Wo
2*
*Radius 600mm
1
212
2
1
600mm
600mm 600mm
2250mm
2250mm
2*
*
*
*
CAUTION: Non accessible flue systems:
▶ Where a flue system is not going to be accessible,
provision must be made for service and inspection.
▶ Flue gas system must comply with local standards
and regulations.
NOTICE: Damage to appliance from contaminated
combustion air and contaminated air in the vicinity of
the appliance!
▶ Never operate the boiler in a dusty chemically
aggressive environment i.e. spray painting, hair
dressing and farming facilities.
▶ Never operate the boiler in places where using or
storing trichlorethane, hydrogen halide and other
aggressive chemical substances. These substances
can be contained in spray cans, various glues,
primers, paints and cleaning substances.
In this case, the appliance must be connected in a
room sealed configuration.
All measurements are the minimum clearances required
… 19 …


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