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installation
aSSemBly
10.1.4
Safety valve
During heating, the DHW in the cylinder expands and causes
positive pressure in the DHW cylinder. The safety valve protects
the cylinder against excessively high pressure.
Risk of damage
!
Install the cylinder with a type-tested diaphragm
expansion valve, to be integrated in the cold water
line. Observe the documentation supplied with the
safety valve, particularly the safety and operating
instructions.
»
Regularly activate the safety valve to prevent it from becoming
blocked by limescale deposits.
The drip water outlet of the safety valve must always remain open
to atmosphere, and must never become narrower. The drain must
be free from the risk of frost and have a steady slope.
»
Check the safety valve functions correctly.
»
Show the user the safety valve and its operating instructions,
and explain its significance.
10.1.5
Plastic pipework
The wall mounted cylinder is suitable for connection to plastic
pipework. Should faults develop, temperatures up to 95 °C
(max. 0.6 MPa) can occur. Any plastic pipework used must be
suitable for such conditions.
10.1.6
Power connection
When making the electrical connection, observe these instructions
as well as the standards and regulations applicable in the country
of installation.
In the Federal Republic of Germany, these are the "Regulations
for installing HV systems with rated voltages up to 1000 V", the
regulations of the local power supply utility, and VDE 0100.
An isolator that disconnects all poles of the power cable with at
least 3 mm contact separation must be installed on site. Fuses or
switches can be used for this, for example.
The wall mounted cylinder is only designed for permanent
connection to the power supply.
The wall mounted cylinder is supplied with a flexible connecting
cable prepared with wire ferrules, of approx. 1.0 m in length.
If the cable is of insufficient length, unclamp from the appliance
and remove. Use a suitable installation cable (3 x 1.5 mm
When routing the new connecting cable, ensure that it is
waterproof as it passes through the existing cable entry, and is
correctly routed and connected inside the appliance.
In the delivered condition, the appliance has a
jumper between terminals 5 and 6. Subject to
connection version, you may have to move or
remove the jumper as required.
16
|PSH Comfort
Electrical wiring diagram (delivered condition)
2
1
6
5
L
3
L
2
L
1
N
A
B
1
Terminal strip
2
High limit safety cut-out
3
Thermostat
4
ON/OFF indicator
5
Pushbutton
6
Relay
7
Heating element
8
Heating element
9
Immersion heater flange
A
Cylinder
B
Anode
R
Resistance
Sample connections with low tariff circuit
2/3 kW 1/N/PE ~230V
2
).
If the low tariff contactor is not to be installed, terminals 5 and 6
must be linked (delivered condition) or, if a permanent output of
3 kW is required, terminals 5 and L3 must be linked.
Sample connections without low tariff circuit
2/3 kW 1/N/PE ~230V
3
4
5
7
9
8
R
3 kW 1/N/PE ~230V
3 kW 1/N/PE ~230V
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