Viessmann OpenTherm Installation And Service Instructions For Contractors

13
Note
Apply strain relief to on-site cables.
Seal any unnecessary apertures with
cable grommets (not cut open).
Connecting the flow temperature sensor
Flow temperature sensor for heating circuit with mixer
Connect the flow temperature sensor to
X 12.5 and X 12.6 (see page 12).
Flow temperature sensor for heating circuit without mixer
Connect the temperature sensor to X
3.1 and X 3.2 (see page 12).
Connecting the mixer motor
Mixer motor, part no. 7450 657
A
2
3
1
gS
A
Plug on mixer motor
gS
Plug on extension kit
|
Mixer open
~
Mixer close
Connect the mixer motor in accordance
with the diagram.
Never interchange wires.
Installation sequence
Overview of electrical connections
(cont.)
5837721
Installation

Viessmann OpenTherm Specifications

General

Brand	Viessmann
Model	OpenTherm
Category	Temperature Controller
Language	English