Siting The Appliance - Bosch Worchester GREENSTAR ZWB 7-27 HE combi Installation And Servicing Instructions

Domestic
hot water
Fig. 5 Sealed primary water system
Heating
return
Fig. 6 Sealed primary water system - filling method
3.4

Siting the appliance

Regulations concerning the Installation Site
B Relevant national regulations must be complied with
section 3.9.1.
B Consult the installation instructions for details of min-
imum clearances required.
Combustion air
In order to prevent corrosion, the combustion air must
not contain any corrosive substances.
Substances classed as corrosion-promoting include
halogenated hydrocarbons which contain chlorine and
fluorine compounds and are contained in some sol-
vents, paints, adhesives, aerosol propellants and house-
hold cleaners, for example.
6 720 610 576 GB (02.05)
APPLIANCE
Refer to Fig.1
Appliance
water flow
diagram
WRC approved
filling loop
Central heating return
Central heating flow
BS stop valve.
Fixed spindle type
Water
main
Non-return Non-return
valve
Test
cock
A drain cock should be fitted at
the lowest point of the heating
circuit and the appliance
valve
Hose
union
Temporary hose
Surface temperature
The max. surface temperature of the casing and the flue
is less than 85 °C.
This means that, no special safety precautions are
required with regard to flammable building materials
and fitted furniture. The specified clearences must be
maintained.
Cupboard/Compartment
The appliance can be installed in a cupboard/compart-
ment need for airing clothes providing that the require-
ments of BS6798 and BS5440:2 are followed. The low
casing losses from the appliance eliminate the need for
ventilation openings in the compartment.
Lockshield
valve
Radiator
valve
6 720 610 576 -09.2O
Hose
union
Test
cock
6 720 610 576 - 10.1O
Installation
13