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Vitodens 100-W, B1HE/B1KE Combi Installation/Service
Installation
Electrical Connections
Opening the junction box
Electronic assemblies can be damaged by electrostatic
discharge.
Before beginning work, touch grounded objects, such as
water pipes, to discharge any static.
Placing the control base in the service position
1. Release tabs on the boiler control base.
2. Pull the control base straight out.
3. Place the control base in the service position, there
are positioning tabs located at the rear of the control
base to be aligned with the holes in the boiler jacket
and lock in place with the control base clips.
Note: Steps 1 to 3 are required only if the
programming unit is located at the bottom.
Do not disconnect the plug from the mounting
panel.
Do not change the position of the cable or its
strain relief on the boiler jacketing
Opening the junction box
4. Release junction box cover clamps.
5. Lift the junction box cover.
Layout of the electrical connections
Note: For further information on the connections,
see the following chapters.
IMPORTANT
fÖ Power cable (already connected)
abH Switched power outlet (max. 36 watts)
P1 Output 120V for:
DHW pump
P2 Output 120V for:
Circulation pump for zone control (call for heat pump)
lA CAN bus (no function)
jF PlusBus (no function)
! Outside temperature sensor, terminals 1 and 2
% Tank temperature sensor, terminals 3 and 4
lH Call for heat, terminals 5 and 6
Note on connecting accessories
When connecting accessories observe the separate
installation instructions provided with them.
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