Viessmann VITOTRONIC 300 Installation And Service Instructions Manual page 11

Vitotronic 300, GW5B & MW1B Installation and Service
System Example
Equipment required
Pos.
Supply temperature sensor M1 as
wU
contact temperature sensor
or
immersion temperature sensor
and
Mixing valve motor for flanged mixing valve M1
wO
Vitotronic 200-H
eP
and
LON communication module (accessory)
and
LON connecting cable (accessory)
Outside temperature sensor ATS
eQ
Boiler accessories
Plug-in adaptor for external safety equipment
eR
Minimum pressure limiter SDB
eT
Maximum pressure limiter SDB
eZ
Low water cutoff
eU
Central fault message system
eI
External hook-ups
- External changeover of stepped/modulating burners
zR
- External boiler blocking
zI
- Start boiler externally as the last one in the boiler sequence
zO
System accessories
Vitotrol 200 A or Vitotrol 300 A
eE
Central fault message system
eI
ON/OFF switch
rP
Vitocom 100 LAN1
rI
KM BUS distributor, for several KM BUS participants
tP
Extension EA1
zP
1 switching output (floating changeover contact):
zQ
- Switching a accessories pump to a substation
- Signalling reduced mode for a heating circuit
1 analogue input (0–10V):
zW
- Specifying the set system supply temperature
3 digital inputs:
zE
External heating program changeover, separately adjustable for heating circuits 1 to 3
External demand
External blocking with fault message
Fault message input
Short term operation of DHW circulation pump
External hook-ups
- External blocking/mixing valve closed
zT
- External demand
zZ
- External heating program changeover/mixing valve open
zU
LON communication module (standard delivery Vitotronic 300-K) for communication with the following
uP
components:
Vitotronic boiler and heating circuit control units
(continued)
Description
Preparing for Installation
11