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SHZ S (GB) |
7
INSTALLATION
Installation
10. Installation
10.1 Appliance installation
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10.2 Water connection and safety assembly
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Material losses
Carry out all water connection and installation work in
accordance with regulations.
Cold water line
Galvanised steel, stainless steel, copper and plastic are approved
materials.
A safety valve is required.
DHW line
Stainless steel, copper and plastic pipework are approved ma-
terials.
!
Material losses
When using plastic pipework, observe chapter "Specifica-
tion / Fault conditions".
The temperature setting can be limited by the qualified
contractor. (see chapter "Settings / Limiting the tempera-
ture selection").
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f
Connect the hydraulic connections with flat gaskets.
Operate the appliance only with pressure-tested taps.
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Fit the safety assembly in the cold water supply line. Be sure
to choose the appropriate safety assembly, according to the
relevant static pressure.
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Observe the information in the installation instructions of the
safety assembly.
See chapter "Specification / Hydraulic diagram" for the general
arrangement in schematic form. You can fit the safety assembly in
various positions to suit the space available but it must be placed
in the same order as shown. The safety assembly provided in the
pack is fitted to the cold water supply with the exception of the T&P
valve which is fitted at the top of the DHW cylinder. DHW cylinder
relief valve connections should not be used for other purposes.
No valve should be fitted between the expansion valve and the
DHW cylinder.
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To obtain a balanced water pressure in the cold water and
DHW lines, position the cold water outlet directly on the out-
let side of the pressure reducing valve.
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The expansion valve should not respond under normal oper-
ating conditions as the expansion vessel will accommodate
the water as it expands during the heating process.
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Run the expansion valve outlet and that of the T&P valve to a
drain via a tundish. The purpose of the tundish is to let water
be seen should these valves respond. The outlet pipe should
not exceed 9 metres in length without forming an air break,
i.e. tundish. The pipe must fall continuously throughout its
length with no additional 90° bends. It must be heat resist-
ant and discharge to a safe visible position away from any
electrical devices. The pipe diameter must not be smaller
than the valve outlet. The two discharge pipes can be joined
together at the point of discharge into a single tundish if
required.
10.3 Power connection
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with relevant regulations.
WARNING Electrocution
The connection to the power supply is only permissi-
ble as a permanent connection in conjunction with the
removable cable grommet. The appliance must be able
to be separated from the power supply by an isolator
that disconnects all poles with at least 3 mm contact
separation.
!
Material losses
Observe the type plate. The specified voltage must match
the mains voltage.
!
Material losses
Ensure that the appliance is earthed.