System Example 2 - Viessmann vitotronic 200-h Installation And Service Instructions Manual

Preparing for Installation

System Example 2

Legend
1 Vitotronic 200-H
2 Outside temperature sensor ATS
qP DHW DHW tank
qQ DHW tank temperature sensor STS
qW Circulation pump for DHW tank heating UPSB
qE DHW circulation pump ZP
wP Heating circuit 1 (underfloor heating circuit)
wW Heating circuit pump M1 (primary pump)
Extension kit for one heating circuit with mixing valve:
wQ Supply temperature sensor M1 as contact temperature
sensor
and
wE Mixing valve motor M1
wR Temperature limiter (maximum limit)
wT Secondary pump (downstream of the system
separation)
wZ Return temperature sensor RLS
wU Heat exchanger
wI Expansion vessel
wO Junction box
eP Heating circuit 2 (with mixing valve accessory
extension module)
eW Heating circuit pump M2
Extension kit for one heating circuit with mixing valve:
eQ Supply temperature sensor M2 as contact temperature
sensor
and
eE Mixing valve motor M2
rP Heating circuit 3 (with mixing valve accessory
extension module)
rW Heating circuit pump M3
Extension kit for one heating circuit with mixing valve:
rQ Supply temperature sensor M3 as contact temperature
sensor
and
rE Mixing valve motor M3
12
(continued)
Vitotronic 200-H, HK1B Installation and Service
Accessories (optional)
tP ON/OFF switch
tQ Central fault message system S
tE Vitotrol 200A or Vitotrol 300A
tT Extension EA1:
tZ 1 switching output (floating changeover contact)
- Switching a feed pump to a substation
- Signalling reduced mode for a heating circuit
tU 3 digital inputs
- External heating program changeover, separately
adjustable for heating circuits 1 to 3
- Fault message input
- Short term operation of DHW circulation pump
External hook-ups
tI - External mixing valve close
tO - External changeover of heating program/external
mixing valve open
zP LON communication module for communication with
the following components:
Vitotronic 200 and 300 boiler and heating circuit
control unit
Vitotronic cascade control unit
Vitotronic 200-H