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Edition: 06 / 2015 Page 37 / 146
VARMAX - Installation, Use and Maintenance
Turn screw
Cover
U0501960-#
gure 27 - Opening the electrical box
Refer to the instructions of installation and use of the NAVISTEM B3000
boiler command table for information concerning electrical connections to
the control panel (characteristics of the electrical power supply, cable section
and connection to terminal blocks).
4.13.1. Control panel
To access the control panel, open the casing
doors on the front of the boiler.
The control panel is on the upper front left of the
boiler.
Unscrew the turn screw at the bottom of the cover.
Lift up the cover and pull backwards.
4.13.2. Cable bushing
Use the cable trays located on the top left of the
boiler to insert the connection cables:
• The upper tray must be reserved for the power
connections (boiler power supply, alarm feedback
or circulating pump control).
• The lower tray is dedicated to signal
connections (sensors, communication bus, etc.).
Use the cable clamp located at the inputs to the
trays to lock the cable mechanically.
U0501963-#
Cable clamp
gure 28 - Electrical cable bushing
High voltage tray
(power supply)
Low voltage tray
(sensors / buses)
37


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