Temperature Monitoring /Alarm; Mains Supply Connection - Pfannenberg PWI Serie Betriebsanleitung

GB
3.5.2

Temperature monitoring /Alarm

• In the event of a deviation of the switch cabinet interior temperature by more than 10K of the rated value setting
(factory default 35°C/95°F), a potential-free contact is activated.
 The contact is marked on the connection terminal bar with the operating equipment designation X1 (Pin 4/5/6),
see Figure Electrical connection
3.5.3

Mains supply connection

WARNING
Potential danger due to incorrect cables
An incorrect cable cross-section will cause the cable to overheat. Scorched insulation can cause fires.
➢ The cable cross-section matches the output required for the power consumption and is
0.5 – 2.5mm² or AWG 20 to AWG 14.
DANGER
Electric arcing can cause electric shock and burns.
When disconnecting and connecting the plug connectors for mains connection under load or voltage,
electric arcing, dangerous voltage, and electric shocks can occur.
➢ Never plug or unplug plug connectors for mains connections under load or voltage.
➢ Work on plug connectors must only be carried out with adequate lighting.
➢ Always switch off the circuit breaker and secure against reconnection.
The following general requirements must be ensured for safe and reliable operation of the air/water heat
exchangers:
• Ensure that all connections are made in accordance with the specifications, see circuit diagram
connection and figure
• Upstream installation of a supply-side temperature regulator is prohibited.
• Connect the fuse specified on the type plate as a power contactor; see
fuse.
• Ensure that the type plate specifications for rated values match the present values for mains voltage and mains
frequency; see Type plate.
• Always connect the air/ water heat exchanger to the mains by means of a separating device (switch/contactor).
 The separating device must have a contact opening of 3 mm. The separating device is installed by the
customer.
Operating manual PWS and PWI 6502 086100052b © Pfannenberg GmbH
.
Power cable
Figure 14 – Electrical connection
Electrical connection
Max. 2.5 mm
AWG 14
Temperature monitoring/alarm
Type plate
2
/
Electrical
and Adapting the upstream
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