Datasheet
5822 239
G
B
3
1.1 Product information and operating conditions
1.1 Product information and operating conditions
Vitogas 100 (type GS1)
Low-temperature gas-fired boiler
Rated output 72 to 144 kW, as multi-boiler
system up to 432 kW
Available as block or in single sections
For operation with modulating boiler
water temperature
With two-stage pre-mix burner for natural
gas and LPG
Fully automatic
Permissible flow temperature
(= safety temperature) up to 110 ºC
Maximum operating pressure 6 bar
Product ID
CE-0085 AS 0297
H High operational safety and long
service life because of heating surfaces
made from special cast iron with
lamellar graphite and low stresses on
the heating surface.
H Economical energy consumption
through modulating boiler water
temperature.
Standard efficiency: up to 93 %.
H Highly reliable and gentle, low-noise
ignition through intermittent ignition
system.
H Matching flue gas header made from
stainless steel for cascade operation
with up to three Vitogas 100 boilers.
– Flexible boiler location.
– Variable flue gas collector installation
– Sliding adapter for simple offset
compensation
– Excellent flow characteristics on the
flue gas side because of continuous,
circular cross-section.
H Weather-compensated digital cascade
control unit Vitotronic 333, capable of
communicating:
– three boilers can be joined with
Vitotronic 100.
– up to 32 Vitotronic 050 control units
can be connected.
– integration into building management
systems via LON BUS.
Operating conditions
Requirements Fulfilled by
1. Heating water flow rate None ––
2. Boiler return temperature
(minimum value)
35 ºC Installation of an effective return
temperature raising facility
*1
3. Lower boiler water temperature 45 ºC The Viessmann control unit, which
is part of the standard delivery
4. Two stage burner operation 1st stage 65 % of rated output Burner adjusted in the factory
5. Reduced operation Single boiler systems and lead boiler of multi-boiler
systems
– operation with the lower boiler water temperature
Lag boiler of multi-boiler systems
– are switched off
The Viessmann control unit, which
is part of the standard delivery
6. Weekend reduction As per reduced operation As per reduced operation
*1
As per application examples from page 14.
" Please note:
For water quality requirements, see page 13.