Viessmann VITOTRONIC 300-K Operations Instructions Page 23

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23
5693 976 - 04
Vitotronic 200 and 300-K Installation and Service
Preselected heating program (Contact open) Coding Changed heating program (Contact closed)
9
Central heating
OFF/DHW OFF
D5:0
(factory set condition)
Permanent operation with reduced room
temperature/ DHW OFF
w
or
w
Central heating
OFF/DHW ON
Central heating
OFF/DHW ON
D5:1
Constant operation with standard room
temperature, DHW in accordance with
coding address “64”
Installation Sequence
The Viessmann LON system is designed for the
“Line” BUS topology with a terminator at both ends
(accessories).
Observe the cabling requirements for the operation of
the LON interface FTT 10-A (see www.echelon.com).
All Viessmann equipment is connected via RJ45
plugs. The Viessmann LON system always requires
the cores “1” and “2” and the screen. The cores are
interchangeable. The installation is therefore safe from
pole errors.
Making the LON Connection
Legend
A Control unit or Vitocom
B LON cable, 23 ft. (7 m) long
C Terminator
Legend
A Control unit or Vitocom
B LON cable, 23 ft. (7 m) long
Max. 3 cables between 2 appliances
C Terminator
D LON extension jack
Connection with Viessmann LON cable
The line may be up to 23 ft. (7 m) long
Connection with Viessmann LON cable and coupling
Installation spacing 23 to 69 ft. (7 to 21 m)
External Heating Program Changeover (continued)
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