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3.4
Assembly
DANGER
Life-threatening danger due to electric shock
Live units and exposed connection cables can generate an electric shock and cause severe accidents.
➢ Work on electrical connections must be carried out exclusively by trained, qualified electricians.
➢ Before assembly, de-energize all supply lines to the separate fuse or a main switch, disconnect the system
and secure to prevent re-connection.
➢ Test to ensure the absence of voltage on the unit.
CAUTION
Danger of crushing during assembly of the unit
There is a danger of crushing between the switch cabinet and frame of the unit during assembly.
➢ Keep body parts out of the space between the frame and unit cut-out.
➢ Work carefully and wear gloves.
NOTE
Switch cabinet installation hazard due to assembly chips
When mounting the air/water heat exchanger cut-outs, assembly chips can fall into the switch cabinet.
➢ When assembling the switch cabinet, protect against impurities and use protective covers.
3.4.1
General assembly requirements
The following general requirements must be ensured for safe and reliable operation of the air/water heat
exchangers:
• The place where the switch cabinet is to be set up must be selected so as to guarantee adequate ventilation of
the air/water heat exchanger. A minimum clearance of 200 mm between units and from the nearest wall must
be observed.
• Installed components in the switch cabinet must not impede air circulation.
• Secure the switch cabinet against tipping.
• Ensure that provided hinges can support the additional weight with the air/water heat exchangers.
• Assembly of the air/water heat exchanger can take place with and without an external unit cover.
Following assembly (without unit cover), attach the line/ protective grounding, connection line/display unit and
assemble everything together on the unit.
• Protect the installation location from heavy contamination with covers.
Operating manual PWS and PWI 6502 T 785408480 © Pfannenberg GmbH
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