Viessmann VITOCROSSAL 200, CM2 186, CM2 246, CM2 311 Technical Data Manual

Technical Data Manual

Model Nos. and pricing : See Price List

VITOCROSSAL 200

Gas-fired Condensing Boiler
663 to 1112 MBH (194 to 326 kW)

Product may not be exactly as illustrated.

Vitocrossal 200

CM2 Series

High efficiency, gas-fired condensing boiler
with pre-mix modulating cylinder burner

for natural gas or liquid propane gas with Inox-Crossal heat
exchanger made of high-grade SA 240-316 Ti stainless steel.
For operation without low limit on boiler return water
temperature.
For closed loop hot water heating systems with maximum
supply water temperatures of 210° F (99° C) for a
maximum operating pressure of 75 psig.

Heating input: 663 to 1112 MBH
(194 to 326 kW)

5608 012 v1.1 08/2012

Please file in Service Binder

Product Information

Vitocrossal 200

Benefits at a glance:

Inox-Crossal heat exchanger surface made of high­ grade SA 240-316 Ti stainless steel for high
operational reliability and long service life.

- Easy dispersal of condensate through vertical gas
flues; therefore no concentration of condensate.

- Increased self-cleaning effect through smooth
stainless steel surfaces.

Highly efficient heat transfer and high condensation
rate through

- heat exchanger surfaces which intensely turbulate
the flue gas flow

- boiler water and hot gases flowing in counterflow.

Efficiency up to 98% through intensive condensation.
The flue gas temperature is only approximately 9 - 27° F
(5 - 15° C) above boiler return temperature (see chart
below).

Clean combustion - through perfect match of burner
and boiler, low combustion chamber loading and
straight-through combustion chamber.

Easy handling in boiler rooms through particularly low
build height and weight.

Vitocrossal 200 CM2 Technical Data

Easy installation and elimination of wiring mistakes

with Viessmann prewired plug-in system.

Heating boiler, heating system control, domestic
hot water storage tank and all other Viessmann
system technology components are coordinated to
one another.
All components are design-matched for quick
installation.

Pre-mix cylinder burner for environmentally-friendly
operation with a modulation range from 20 to 100%.

All hydronic connections can be fitted from above.

Economical and safe heating system operation
through Vitotronic digital control system with
communication capability. Tailored to every need,
covering all known control strategies and
applications.
Standard LON BUS for complete integration into
building management systems.

Particularly quiet operation.

High altitude operation up to 10,000 ft. (3000 m)
with a simple electronic adjustment.

Design

Supply / Return
104° F - 88° F

(40° C - 30° C)

Curve 0.5

Design

Supply / Return

167° F - 140° F

(75° C - 60° C)

Curve 1.4

Boiler Efficiency in %

Design

Supply / Return

194° F / 158° F

(90° C - 70° C)

Curve 1.8

System Partial Load in %

Vitocrossal 200 boiler efficiency dependent on system
heating water return temperatures and load conditions

Boiler Water/ Supply Temperature

Room
Set-Point
Temperature

Outdoor Temperature

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Vitocrossal 200 CM2 Technical Data

Cutaway Section

Product Information

Legend

A Inox-Crossal heat exchanger surface made from

high-grade SA 240-316 Ti stainless steel

B Highly effective thermal insulation
C Water cooled stainless steel combustion chamber

D Wide water passageways with low pressure drop -

good natural circulation

E Fully modulating pre-mix cylinder burner
F Vitotronic control unit

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Specifications

Vitocrossal 200 CM2 Technical Data

Technical Data

Boiler Model CM2 186 246 311
Input MBH 663 878 1112

(kW) (194) (257) (326)

Minimum Input MBH 133 175 222

(kW) (39) (51) (65)

Output*

1 MBH

(kW)

Net AHRI rating MBH

(kW)

Combustion efficiency*

Thermal efficiency*

1 % 95 95 95

1 % 97 97 97

Overall length(e) in. 73 73 73

(mm) (1852) (1852) (1852)

643

(188)

559

(164)

851

(249)

740

(217)

1078
(316)

937

(275)

Overall width (c) in.

36b 36b 36b

(including insulation) (mm) (930) (930) (930)

Overall height (a) in. 66 66 66
(including control unit) (mm) (1676) (1676) (1676)

Concrete boiler base

Length in. 40 40 40

(mm) (1005) (1005) (1005)

Width in. 31 31 31

(mm) (800) (800) (800)

Thickness in. 4 4 4

(mm) (100) (100) (100)

Weight

Boiler body lb 503 536 564

(Kg) (228) (243) (256)
Complete with the burner, control lb 726 759 792
and thermal insulation (Kg) (329) (344) (359)

*

1 Tested to AHRI, BTS-2000 Testing Standard Method to Determine Efficiency of Commercial Heating Boilers.

Note: For high altitude installations (5,000 to 10,000 ft.), the input will have an altitude de-ration of 15% for 5,000 ft.
and 18% for 10,000 ft.

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Vitocrossal 200 CM2 Technical Data

Specifications

Technical Data (continued)

Boiler Model CM2 186 246 311
Boiler Water Content USG 81 77 74

(L) (306) (292) (279)
Heat exchanger surface ft.
water cooled (m

Maximum Operating Temperature °F 190 190 190

Maximum Operating Pressure psig 75 75 75

Boiler Connections

Boiler supply and return (BS), (BR) in.
(ANSI flanges)

Safety Supply in.

Boiler Drain in. 1 1 1
Condensate Drain in.

Vent pipe

Internal Diameter in. 8 8 8

Flue Gas Values

temperature (at a return
temperature of 86° F (30° C)

at rated input °F 136 132 130

at partial load °F 95 95 95

Temperature (at a return
temperature of 140° F (60° C)

at rated input °F 167 167 167

Mass flow rate (of flue gas)
at rated input lbs/h 593 785 994

2

2)

(°C) (88) (88) (88)

(kpa) (517) (517) (517)

(mm) (65) (65) (65)

(mm) (32) (32) (32)

(mm) (201) (201) (201)

(°C) (58) (55) (54)

(°C) (35) (35) (35)

(°C) (75) (75) (75)

(kg/h) (269) (356) (451)

73.2 90.4 114.1

(6.8) (8.4) (10.6)

2b 2b 2b

1a 1a 1a

c c c

at partial load lbs/h 198 262 331

Pressure

at boiler flue outlet pa 70 70 70
at rated input “w.c. 0.28 0.28 0.28

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(kg/h) (90) (119) (150)

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