Product Description - Viessmann VITOCROSSAL 200 Type CM2 Technical Manual

Vitocrossal 300, type CT3U, 400 to 630 kW

4.1 Product description

Gas condensing boiler with MatriX cylinder burner for natural gas E
and LL, for open or balanced flue operation
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 5.5 bar (0.55 MPa)
■ CE designation: CE-0085AQ0257 in accordance with the Gas Appli-
ances Directive.
■ Boiler categories: B , B
23
■ Condensing Unit with MatriX cylinder burner as two-boiler system
up to 1260 kW.
■ Standard seasonal efficiency [to DIN]: up to
98 % (H ) [gross cv] / 109 % (H
s
4.2 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
4
5. Two-stage burner operation
6. Modulating burner operation
7. Reduced mode
8. Weekend setback
VIESMANN
8
, C , C , C , C , C , C
23P 33 43 53 63 83 93
) [net cv].
i
■ 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.
■ MatriX cylinder burner for particularly quiet and environmentally
responsible operation with a modulating range of 33 to 100 %.
■ Either open flue or balanced flue operation.
■ Cascade with pre-assembled accessories on the hydraulic and flue
gas side.
■ 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.
Requirements
None
None
None
10 °C – ensured through the Viessmann control unit
None
None
None – total reduction is possible
None – total reduction is possible
Gas condensing boilers