Siting The Appliance - Bosch WORCESTER GREENSTAR HE ZB 7-27 Manual

Installation
Repeated venting probably indicates a leak and this
must be rectified to ensure the proper operation of the
appliance.
No galvanised radiators or pipes must be used.
If any system water treatment is required then
only products suitable for use with Aluminium
shall be used i.e Fernox- Copal or Sentinal X100,
in accordance with the manufacturers
instructions. The use of any other substances will
invalidate the guarantee. The pH value of the
Domestic
hot water
Fig. 5 Sealed primary water system
Heating
return
Fig. 6 Sealed primary water system - filling method
3.3

Siting the appliance

Regulations concerning the Installation Site
y Relevant national regulations must be complied with
section 3.8.1.
y 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
12
APPLIANCE
Refer to Fig.1
Appliance
water flow
diagram
WRC approved
filling loop
Central heating return
Central heating flow
Domestic
BS stop valve.
hot water
Fixed spindle type
Water
main
Non-return Non-return
valve valve
Test
cock
system water must be less than 8 or the
appliance guarantee will be invalidated.
A drain cock to BS2879 must be fitted to the lowest
point of the system.
IMPORTANT: Check that no dirt is left in the
water pipework as this could damage the
appliance. Thoroughly flush the heating system
and the mains water supply before fitting the
appliance to the wall in accordance with the
recommendations of BS7593:1992.
A drain cock should be fitted at
the lowest point of the heating
circuit and the appliance
Hose Hose
union union
Temporary hose
6 720 610 576 - 10.1O
fluorine compounds and are contained in some sol-
vents, paints, adhesives, aerosol propellants and house-
hold cleaners, for example.
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.
Lockshield
valve
Radiator
valve
6 720 610 576 -09.1O
Test
cock
6 720 610 596 GB (01.07)