Viessmann VITOTRONIC 100 GC1B Service Manual download pdf (Page 111)

Additional information

111

System Components (continued)

Programming unit, Part No. 7823 990

The programming unit is inserted in the

control unit.

For setting:

heating program

set-point values

For displaying:

temperatures

operating status information

faults

Fuse box, Part No. 7820 175

The fuse box contains:

fixed high limit

adjustable high limit

fuses

heating system switch

TUV button

LON communication module, Part No. 7172 173 Accessory

The communication module is inserted

in the control unit.

Interruption of communication is

indicated.

1 terminal resistor is inserted on each

of the first and last control unit.

A Control unit or Vitocom

B Connecting cable for data transfer

between the control units (part of

standard delivery or accessory)

C Terminal resistor,

(Part No. 7143 497, see Vitotronic

050 or Vitotronic 333)

D Plug-in locations for B and C

5351 338 v1.6

LON

A AA

1 2 ... 106 107 108 109 110 111 112 113 114 115 116 ... 131 132

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Viessmann VITOTRONIC 100 GC1B Service Manual Page 111