Product Description - Viessmann VITOCROSSAL 200 Type CM2 Technical Manual

Vitocrossal 300, type CM3, 87 to 142 kW

3.1 Product description

Gas condensing boiler with MatriX radiant burner for natural gas E and
LL
With two return connectors
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 4 bar (0.4 MPa)
■ CE designation: CE-0085BN0569 in accordance with the Gas Appli-
ances Directive.
■ Boiler categories: B
23
■ Standard seasonal efficiency [to DIN]: up to
98 % (H ) [gross cv] / 109 % (H
s
■ Stainless steel Inox-Crossal heat exchanger for efficient utilisation
of condensing technology – self-cleaning effect through smooth
stainless steel surfaces.
3.2 Operating conditions
Note
For water quality requirements, see page 48.
1. Heating water flow rate
2. Boiler return temperature (minimum value)
3. Low-end boiler water temperature
4. Lower boiler water temperature with frost protection
5. Two-stage burner operation
6. Modulating burner operation
7. Reduced mode
8. Weekend setback
Gas condensing boilers
) [net cv].
i
■ Modulating MatriX gas burner with a wide modulation range (30 to
100 %) for particularly quiet, economical and environmentally
responsible operation.
■ Excellent controllability and reliable heat transfer due to wide water
galleries and high water content.
■ Second return connector for low return temperatures resulting in an
especially intensive utilisation of condensing technology.
■ Easy to use Vitotronic control unit with plain text and graphic display.
■ Hydraulically straightforward connection, no minimum flow rate, no
low loss header necessary, particularly low pressure drop on the
water side.
■ A strong draught in the flue outlet enables long flue and ventilation
air pipe runs.
Requirements
None
None
None
10 °C – ensured through the Viessmann control unit
None
None
None – total reduction is possible
None – total reduction is possible
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VIESMANN
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