Buderus GB402-320-5, Installation And Maintenance Instructions For Contractors

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6 Fitting
Logano plus GB402 – 6 720 820 700 (2018/01) 22
6.7 Making the electrical connection
The boiler can only function fully with an installed control unit.
When connecting electrical components, also observe the connection
diagram and instructions of the relevant product.
6.7.1 Fitting the control unit
Fig. 19 Control unit installation versions
▶ Insert the push-in hooks of the control unit into the oval holes of the
front boiler cover.
▶ Push the control unit towards the outside edge of the boiler.
▶ Let the resilient hooks of the control unit click into the openings by
pushing the control unit.
Fig. 20 Fitting the control unit (Logamatic MC10)
6.7.2 Establishing the power supply connection
Create a permanent power connection in accordance with local
regulations.
▶ Release two screws on the control unit cover and remove it.
Fig. 21 Removing the cover
▶ Route all cables that run towards the back through the cable trunking.
DANGER: Risk to life from electric current!
▶ Prior to all electrical installation work, isolate all
poles of the mains power supply and secure against
unintentional reconnection.
Observe the following points regarding the electrical
connection:
▶ Electrical work on heating systems must only be
carried out by qualified electricians. If you are not
suitably qualified, have an electrical contractor carry
out the electrical connections.
▶ Observe all local regulations!
Subject to preference, the control unit may be fitted in 2
different positions.
The decorative fascia cannot be fitted.
DANGER: Risk to life from electric shock!
Incorrectly terminated cables can result in faulty
operation and possible dangerous consequences.
▶ When making the electrical connections, observe the
connection diagram of the MC10 and its installation
instructions (part of the standard delivery of the
control unit).
DANGER: Risk of fire through hot boiler components!
Hot boiler components may damage electrical cables
and leads.
▶ Ensure that all cables are routed through the cable
entries provided or along the boiler insulation
material.
NOTICE: System damage through incorrect control!
▶ Route high and low voltage cables separately inside
the cable conduits.
7 747 010 720- 33 .1RS