High Limit Safety Cut-Out For Area Heating System; Stb-Fb; Power Supply - STIEBEL ELTRON HSBB 3 Bedienung Und Installation

INSTALLATIoN

Power supply

11.7.1 Permissible materials
Cold water line
Galvanised steel, stainless steel, copper and plastic are approved
materials.
DHW line
Stainless steel, copper and plastic pipework are approved.
Material losses
!
The maximum permissible pressure must not be exceed-
ed (see chapter "Specification / Data table").
Safety valve on the domestic hot water side
f Install a type-tested safety valve in the cold water supply f
line. Please note that, depending on the supply pressure, you
may also need a pressure reducing valve.
f The safety valve discharge aperture must remain open to f
atmosphere.
f Install the safety valve drain pipe with a constant fall to the f
drain.
f Size the drain so that water can drain off unimpeded when f
the safety valve is fully opened.
f Flush the pipes thoroughly. f
11.8 High limit safety cut-out for area heating
system STB-FB
Material losses
!
In order to prevent excessively high flow temperatures
in the area heating system causing damage in the event
of a fault, install a high limit safety cut-out to limit the
system temperature.
12. Power supply
WARNING Electrocution
Carry out all electrical connection and installation work
in accordance with national and regional regulations.
WARNING Electrocution
f Before working on the appliance, isolate it from the f
power supply at the control panel.
WARNING Electrocution
Only use a permanent connection to the power supply.
Ensure the appliance can be separated from the power
supply by an isolator that disconnects all poles with at
least 3 mm contact separation. This requirement can be
met with contactors, circuit breakers, fuses/MCBs, etc.
Material losses
!
Provide separate fuses for the two power circuits of the
appliance and the control unit.
32 | HSBB 3
Material losses
!
The specified voltage must match the mains voltage. Ob-
serve the type plate.
Note
Electrical connection work must only be carried out by
a qualified contractor and in accordance with these in-
structions.
Note
Permission to connect the appliance may need to be ob-
tained from your local power supply utility.
f Observe VDE 0100 [or local regulations] and the reg- f
ulations of your local power supply utility.
Note
If there is an emergency/booster heater (DHC) integrated
into the heat pump, connect it directly in the heat pump.
1 Cable entry
The wiring chamber of the appliance is located behind the lower
appliance door. If the lower appliance door is closed, see chapter
"Opening the appliance".
f Route all connecting cables and sensor leads through the f
cable entry into the appliance.
f Route all connecting cables and sensor leads through the f
gap in the centre of the appliance so they reach as far as the
connection PCB.
f Connect the cables and sensor leads as detailed below. f
f Use cables with the relevant cross-sections. Observe the ap- f
plicable national and regional regulations.
1
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