2.1 Product description
Gas condensing boiler with MatriX cylinder burner for natural gas E,
LL and LPG, for open or balanced flue operation
For operation with a modulating boiler water temperature
Permissible operating temperature up to 95 °C
Permissible safety temperature up to 110 °C
Permissible operating pressure 6 bar (0.6 MPa)
■ CE designation: CE-0085BQ0021 in accordance with the Gas Appli-
ances Directive.
■ Boiler categories: B
23
, B
23P
, C
13
, C
33
, C
43
, C
53
, C
63
, C
83
■ Condensing Unit with gas burner, 400 to 620 kW, as dual cascade
up to 1240 kW.
■ Standard seasonal efficiency [to DIN]: up to
97 % (H
s
) [gross cv] / 108 % (H
i
) [net cv].
■ The stainless steel, corrosion-resistant Inox-Crossal heat exchanger
ensures high operational reliability and a long service life.
■ Inox-Crossal heat exchanger for highly effective heat transfer and
high condensation rate.
■ Self-cleaning effect through smooth stainless steel surface.
■ Clean combustion through low combustion chamber loading and
straight-through design.
■ MatriX cylinder burner for environmentally responsible operation
with a modulation range from 20 to 100 %.
■ Either balanced flue or open flue operation.
■ All hydraulic connections on the system side can be made from
above.
■ Hydraulically straightforward connection, no minimum flow rate, no
low loss header necessary, particularly low pressure drop on the
water side.
■ Easy to use Vitotronic control unit with plain text and graphic display.
2.2 Operating conditions
Note
For water quality requirements, see page 48.
Requirements
1.
Heating water flow rate
None
2.
Boiler return temperature (minimum value)
None
3.
Lower boiler water temperature
None
4.
Reduced mode
None – total reduction is possible
5.
Weekend setback
None – total reduction is possible
Vitocrossal 200, type CM2, 400 to 620 kW
6
VIESMANN
Gas condensing boilers
2
5822 449 GB
