Viessmann VITOCROSSAL 200 Gebrauchsanweisung

Technical Data Manual

5608 012 v1.1 08/2012

VITOCROSSAL 200

Gas-fired Condensing Boiler

663 to 1112 MBH (194 to 326 kW)

Please file in Service Binder

Model Nos. and pricing : See Price List

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)

Product may not be exactly as illustrated.

5608 012 v1.1

Vitocrossal 200 CM2 Technical Data

Vitocrossal 200

Product Information

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.

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.

Vitocrossal 200 boiler efficiency dependent on system

heating water return temperatures and load conditions

Boiler Efficiency in %

System Partial Load in %

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

Design

Supply / Return

194°F / 158°F

(90°C - 70°C)

Curve 1.8

Outdoor Temperature

Boiler Water/ Supply Temperature

Room

Set-Point

Temperature

5608 012 v1.1

Vitocrossal 200 CM2 Technical Data Product Information

Cutaway Section

Legend

AInox-Crossal heat exchanger surface made from

high-grade SA 240-316 Ti stainless steel

BHighly effective thermal insulation

CWater cooled stainless steel combustion chamber

DWide water passageways with low pressure drop -

good natural circulation

EFully modulating pre-mix cylinder burner

FVitotronic control unit

5608 012 v1.1

Vitocrossal 200 CM2 Technical Data

Technical Data

Specifications

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*1MBH

(kW)

643

(188)

851

(249)

1078

(316)

Net AHRI rating MBH

(kW)

559

(164)

740

(217)

937

(275)

Combustion efficiency*1% 95 95 95

Thermal efficiency*1% 97 97 97

Overall length(e) in. 73 73 73

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

Overall width (c) in. 36b36b36b

(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)

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.

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

5608 012 v1.1

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.273.2 90.4 114.1

water cooled (m2) (6.8) (8.4) (10.6)

Maximum Operating Temperature °F 190 190 190

(°C) (88) (88) (88)

Maximum Operating Pressure psig 75 75 75

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

Boiler Connections

Boiler supply and return (BS), (BR) in. 2b2b2b

(ANSI flanges) (mm) (65) (65) (65)

Safety Supply in. 1a1a1a

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

Boiler Drain in. 1 1 1

Condensate Drain in. ccc

Vent pipe

Internal Diameter in. 8 8 8

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

Flue Gas Values

temperature (at a return

temperature of 86° F (30° C)

at rated input °F 136 132 130

(°C) (58) (55) (54)

at partial load °F 95 95 95

(°C) (35) (35) (35)

Temperature (at a return

temperature of 140° F (60° C)

at rated input °F 167 167 167

(°C) (75) (75) (75)

Mass flow rate (of flue gas)

at rated input lbs/h 593 785 994

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

at partial load lbs/h 198 262 331

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

Pressure

at boiler flue outlet pa 70 70 70

at rated input “w.c. 0.28 0.28 0.28

5608 012 v1.1

Vitocrossal 200 CM2 Technical Data

Dimensions

Specifications

Legend

V Vent pipe connection

D Drain

CD Condensate drain

BR Boiler return

BTS Boiler water temperature sensor

BS Boiler supply

SH Female connection NPT bin. for pressure gage

CA Combustion air pipe connection

SS Safety supply; pressure relief valve, air vent,

low water cut-off

Dimensions

Model CM2 186 246 311

a in. (mm) 66 (1676) 66 (1676) 66 (1676)

b in. (mm) 56b(1438) 56b(1438) 56b(1438)

c in. (mm) 36b(930) 36b(930) 36b(930)

d in. (mm) 30 (760) 30 (760) 30 (760)

e in. (mm) 73 (1852) 73 (1852) 73 (1852)

f (flue pipe projection at the back) in. (mm) 3 (75) 3 (75) 3 (75)

g in. (mm) 59 (1500) 59 (1500) 59 (1500)

h (foot length) in. (mm) 39b(1005) 39b(1005) 39b(1005)

i (distance from front face of the cover to the front

supporting foot)

in. (mm) 12c(323) 12c(323) 12c(323)

k in. (mm) 53c(1365) 53c(1365) 53c(1365)

l (distance from the front face of the cover to

the centre of the the boiler supply connection)

in. (mm) 28c(729) 28c(729) 28c(729)

m in. (mm) 10c(275) 10c(275) 10c(275)

n in. (mm) 10 (255) 10 (255) 10 (255)

o in. (mm) 11a(284) 11a(284 11a(284

p in. (mm) 58c(1493) 58c(1493) 58c(1493)

q in. (mm) 22 (558) 22 (558) 22 (558)

r in. (mm) 5b(142) 5b(142) 5b(142)

s in. (mm) 5 (126) 5 (126) 5 (126)

t in. (mm) 4 (100) 4 (100) 4 (100)

u in. (mm) 8 (207) 8 (207) 8 (207)

v in. (mm) 4 (100) 4 (100) 4 (100)

5608 012 v1.1

Vitocrossal 200 CM2 Technical Data Specifications

Recommended Minimum Service Clearances

Mechanical room

Avoid air contamination by halogenated hydrocarbons

(e.g. as in sprays, paints, solvents and cleaning agents)

Avoid very dusty conditions

Avoid high levels of humidity

Protect against frost and ensure good ventilation,

otherwise the system may suffer faults and damage.

In rooms where air contamination from halogenated

hydrocarbons is to be expected, operate the boiler

only in balanced flue mode.

Minimum clearances to combustibles

Boiler model CM2 186 246 311

Top 0

Sides 0

Flue As per vent manufacturer’s specifications

Front 0

Floor combustible

Legend

ABoiler

BBurner

*1 Can be zero clearance, if serviceability and burner

swing position is not required.

*2 Clearance for vent pipe installation.

To enable convenient installation and maintenance,

observe the stated clearance dimensions. Maintain the

minimum clearances where space is tight.

In the delivered condition, the boiler door hinge bracket

is factory installed on the left side of the door. If required,

the boiler door hinge bracket can be reinstalled on the

right side of the door.

CM2 186 246 311

a *1 in. (mm) 20 (500) 20 (500) 20 (500)

b *2 in. (mm) 30 (760) 30 (760) 30 (760)

c in. (mm) 20 (500) 20 (500) 20 (500)

d in. (mm) 20 (500) 20 (500) 20 (500)

e in. (mm) 24 (600) 24 (600) 24 (600)

f in. (mm) 11 (280) 11 (280) 11 (280)

g in. (mm) 15b(395) 15b(395) 15b(395)

5608 012 v1.1

Vitocrossal 200 CM2 Technical Data

Flow Rate

Specifications

Pressure drop (primary circuit)

The Vitocrossal 200 is only suitable for fully pumped hot

water heating systems.

Recommended Flow Rates CM2

Boiler model 186 246 311

20° F rtGPM 63 84 106

40° F rtGPM 31 42 53

11° C rtm3/h 14.3 19.07 24.07

22° C rtm3/h 7.04 9.53 12.04

rt = temperature difference

This boiler does not require a flow switch.

“w.c. mbar

m3/h

GPM

Pressure drop

Flow rate

5608 012 v1.1

Vitocrossal 200 CM2 Technical Data

Cylinder Burner

Specifications

Boiler Model CM2 186 246 311

Product ID see boiler

Voltage V 120 120 120

Frequency Hz 60 60 60

Power consumption

at max. input W 225 278 368

at min. input W 51 52 67

Version modulating

Dimensions

Length in. (mm) 30.3 (770) 30.3 (770) 30.3 (770)

Width in. (mm) 21.5 (546) 21.5 (546) 21.5 (546)

Height in. (mm) 18.9 (482) 18.9 (482) 18.9 (482)

Weight

Burner only

Burner package (with kits, flanges and

mounting hardware)

lb. (kg)

61.0 (27.6)

93 (42.2)

64.5 (29.3)

100.5 (45.5)

64.5 (29.3)

100.5 (45.5)

Min. gas supply pressure

Natural gas “w.c. 4 4 4

Liquid propane gas “w.c. 10 10 10

Max. gas supply pressure

Natural gas “w.c. 14 14 14

Liquid propane gas “w.c. 14 14 14

Gas connection NPT 1 1a1a

Specifications

5608 012 v1.1

Vitocrossal 200 CM2 Technical Data

Cylinder Radiant Burner (continued)

Specifications

CM2 pre-mix cylinder burner 186/246/311

Legend

ABoiler door

BAir pressure switch 1

CFan

DBurner display and programming unit

EGas valve with gas pressure switch

FGas supply pipe

GBurner test firing valve

HCylinder burner assembly

IIgnition electrodes

Note: Solenoid valve (choke valve) for CM2 model 186

(not shown).

JIonization electrode

KGas pipe

LAC-EMI suppresion filter device

MIgnition unit

NThermal insulation block

OManual shut-off valve

PVenturi mixing pipe

QAir pressure switch 2

RBurner control sub-base

SServomotor and burner inlet damper (for models 246 / 311)

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