Provisional Burner Operation Abö; Single Boiler System - Connecting An External Control Unit - Viessmann VITOTRONIC 100 GC1B Installation And Service Instructions Manual

Installation Sequence
Provisional Burner Operation
Legend
A Dry contact
B DIN rail
Single Boiler System – Connecting an External Control Unit
Settings
Codes in category 2 "Boiler":
– "02:1" for two-stage burner
– "02:2" for modulating burner
– "01:1" for single boiler system (delivered condition)
The boiler water temperature must be set to the lower
value. The boiler is held at the required minimum
temperature.
Fixed high limit
Adjustable high limit
Coding address for the electronic maximum temperature
limit of Vitotronic 100;
set coding address 06 (see boiler coding section) to the
temperature as shown or less
62
150
Remove jumper across terminals 16 and 17 (not shown)
and connect terminals 16 and 18 external control via dry
contact (heat demand on close). Upon heat demand the
boiler will maintain low fire until modulation is externally
controlled through BMS.
Temperature control is limited by the adjustable high limit.
For connection points refer to the burner
Installation Instructions.
B
The DHW tank adjustable high limit is activated when
a DHW tank temperature sensor is connected.
The fixed high limit settings and other settings depend
on the system equipment.
Non-condensing boiler
(VD2/VD2A) °F (°C)
Factory set at;
230°F
(110°C)
212°F
(100°C)
200°F
(93°C)
Vitotronic 100, GC1B Installation and Service
Adjustable to;
210°F 248°F
(99°C) (120°C)
203°F 230°F
(95°C) (110°C)
188°F 223°F
(87°C) (106°C)
Condensing
boiler
(CT3) °F (°C)
Factory set at;
210°F
(99°C)
203°F
(95°C)
188°F
(87°C)