Application Example 4; System With Two Heating Circuits With Mixing Valves - Viessmann Vitotronic 300 KW3 Installation Instructions Manual

Application Example 4

System with two heating circuits with mixing valves

Boiler with Vitotronic 300
Domestic hot water tank
Heating circuit with mixing valve 1
Mixing valve actuator accessory kit
Heating circuit with mixing valve 2
Mixing valve actuator accessory kit
KM-BUS Expansion Module
(accessory) for the connection of
several KM-BUS participants
Power Pump Module
I Low water cut-off device
Required Equipment
Description
Vitotronic 300
Mixing valve actuator accessory kit (with mixing valve motor and supply temperature
sensor) for Viessmann mixing valve
KM-BUS Expansion Module
Available System Accessories
Vitotrol remote control
Room temperature sensor
Return water temperature sensor
*1
Supply check valve, only required if piping connection is made on one common boiler return.
*2
To be connected in accessory kit.
*3
In connection with underfloor heating when control measures supply and return water temperature.
*4
Included in standard equipment.
Connectors
Outdoor temperature sensor
Supply temperature sensor
*2
(accessory)
Boiler temperature sensor
DHW tank temperature sensor
Return water temperature sensor
*2,3
(accessory)
KM-BUS participant
Extension for
two-stage/modulating burner
Switching Module-V for expanding
the range of control functions
Flue gas temperature sensor
Heating system types
M1 Mixing valve circuit pump 1
M2 Mixing valve circuit pump 2
DHW production pump
(accessory)
DHW recirculation pump
(field supplied where required)
Power supply
(120 VAC, 60 Hz)
Burner, single-stage
*4
Burner, two-stage/
modulating
Qty Part No.
1 Z001 231
7133 392 (old version)
2 or
7837 524 (new version)
1 7133 393
*2
*4
*4
7