Siting The Appliance - Benchmark ZB 7-28 R 28 HE Installation And Servicing Instructions

Note:
A drain cock
should be fitted
RV
at the lowest
point of the
heating circuit
and beneath
the appliance
RV
Fig. 7 System layout if using twin zone valves (S) plan
Fig. 8
3.3

Siting the appliance

Regulations concerning the Installation Site
B Relevant national regulations must be complied with
section 3.8.1.
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.
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 clearances must be
maintained.
6 720 611 443 GB (05.04)
LV
RV
LV
RV
Radiator Valve - Flow RV
Lockshield Valve - Return LV
LV
APPLIANCE
LV
Refer to
Appliance
Water
Flow
Diagram
Safety Discharge
CH DHW Zone Valve
Zone
Valve
BS
Stop Valve Fixed Cylinder Type
Cupboard/Compartment
The appliance can be installed in a cupboard/compart-
ment need for airing clothes providing that the require-
ments of BS 6798 and BS 5440:2 are followed. The
low casing losses from the appliance eliminate the need
for ventilation openings in the compartment.
INDIRECT
CYLINDER
Mains Cold Water
6 720 611 400-14.1O
Installation
13