Installation; Positioning The Appliance; Heating Water Connection - STIEBEL ELTRON HSBC 300 cool (GB) (WPM) Operation And Installation Manual

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installation
10. Installation

10.1 Positioning the appliance

f When positioning the appliance, observe minimum clearanc-
es (see chapter "Preparations / Installation site").
f Use the adjustable feet to compensate for any unevenness in
the floor.

10.2 Heating water connection

Material losses
!
The heating system to which the appliance is connected
must be installed by a qualified contractor in accord-
ance with the water installation drawings in the technical
guides.
Material losses
!
When fitting additional shut-off valves, install a further
safety valve in an accessible location on the heat gen-
erator itself or in the flow line in close proximity to the
heat generator.
There must not be a shut-off valve between the heat gen-
erator and the safety valve.
Oxygen diffusion
Material losses
!
Do not use open vented heating systems. Use oxygen
diffusion-proof pipes in underfloor heating systems with
plastic pipework.
In underfloor heating systems with plastic pipes that are per-
meable to oxygen and in open vented heating systems, oxygen
diffusion may lead to corrosion on the steel components of the
heating system (e.g. on the indirect coil of the DHW cylinder, on
buffer cylinders, steel radiators or steel pipes).
f With heating systems that are permeable to oxygen, separate
the heating system between the heating circuit and the buff-
er cylinder.
Material losses
!
The products of corrosion (e.g. rusty sludge) can set-
tle in the heating system components, which may re-
sult in a lower output or fault shutdowns due to reduced
cross-sections.
Supply lines
Note
The maximum permissible line length between the ap-
pliance and the heat pump will vary, depending on the
version of the heating system (pressure drop). As a stand-
ard value, assume a maximum line length of 10 m and a
pipe diameter of 22-28 mm.
f Thoroughly flush the pipes before connecting the heat pump.
Foreign bodies (e.g. welding pearls, rust, sand, sealing
material, etc.) can impair the operational reliability of the
system.
12 | HSBC 300 cool
f Install the heating water pipes (see chapter "Specification /
Dimensions and connections").
f Protect the flow and return lines against frost with sufficient
thermal insulation.
f Connect the hydraulic connections with flat gaskets.
If the available external pressure difference is exceeded, the pres-
sure drop in the heating system could result in a reduced heating
output.
f When sizing the pipes, ensure that the available external
pressure differential is not exceeded (see chapter "Specifica-
tion / Data table").
f When calculating the pressure drop, take account of the flow
and return lines and the pressure drop of the heat pump.
The pressure drop must be covered by the available pressure
differential.
10.2.1 HSBC 3-HKM (optional)
WARNING Electrocution
Before starting work on the appliance, disconnect all
poles from the power supply and drain the heating circuit
via the drain valve on the buffer cylinder.
To extend the appliance with a heating circuit with mixer, you can
install pump assembly HSBC 3-HKM (available as an accessory).
Standard delivery
1
2
4
6
9 8
1 Pipe insulation
2 Connection pipes (*)
3 Temperature sensor
4 Heating circuit pump (*)
5 3-way mixer (*)
6 Insulation mat for 3-way mixer
7 Flat gaskets
8 Servomotor for 3-way mixer (*)
9 Insulation mat for 3-way mixer and heating circuit pump
(*) Pipe assembly
3
5
7
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