Viessmann GC1 Installation And Service Instructions

B
5
52
A1
20
A1
21 17B
A
C
28
53
System extension
DHW heating with a cylinder storage system
Only in conjunction with single boiler systems
A Boiler with Vitotronic 300
B Vitocell−L 300
C Vitotrans 222
Plug
% Terminals 1 and 2:
Cylinder temperature
sensor1 (top)
Terminals 2 and 3:
Cylinder temperature
sensor2 (bottom)
aJB Temperature sensor
Vitotrans 222
sÖA1 Primary pump
sA Secondary pump
sK DHW circulation pump
gSA1 Motor for three−way mixing
valve
Possible applications
In systems with temporarily high
DHW demand and large cylinder
capacity with offset heating and
draw−off times.
5862730GB

Viessmann GC1 Specifications

General

Brand	Viessmann
Model	GC1
Category	Control Unit
Language	English