Viessmann Vitodens 200-W, B2HB Technical Manual

Technical Data Manual

Model Nos. and pricing: see Price List

For Natural Gas and Liquid Propane Gas
Gas-fired wall-mounted condensing boiler
12 to 125 MBH (3.5 to 37 kW)

VITODENSr 200-W

Product may not be exactly as shown

Vitodens 200-W
Series B2HB, Models 19, 26 and 35

Gas-Fired Wall-Mounted Condensing Boiler
with modulating MatriX cylinder burner for
room air independent operation (using a
direct vent system) or room air dependent
operation.

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H

Product Information

Vitodens 200-W

Equipped with the industry’s first intelligent combustion
management system and powerful control technology,
the new generation Vitodens 200-W gas-fired wall-mount
condensing boiler delivers unparalleled performance,
reliability and comfort.

The benefits at a glance:

Vitodens 200-W, B2HB 19 to 35 Technical Data

■ Best value in its class with new industry-leading
technology and the most standard features.

■ Highest Efficiency up to 98% at full modulation and up
to 95% A.F.U.E.

■ Lasting performance with industry-leading Viessmann
made SA240 316 Ti stainless steel Inox-Radial heat
exchanger constructed to CSA B51 and ASME Section IV.

■ Low Emission Combustion with Viessmann made
stainless steel MatriX cylinder burner. Factory calibrated.

■ Fast Installation and Reduced Maintenance with Lambda
Pro, industry-first intelligent combustion management
system: Adjusts automatically to gas type and quality.
No fuel conversion kit required.

■ Powerful and User-friendly
Viessmann Vitotronic on-board multi-function outdoor
reset boiler and system control for multi-temperature
space and DHW heating.

■ Greater Venting Flexibility with increased vent length
up to 180 ft. (55 m) and multiple venting options.

- Horizontal or vertical sealed combustion coaxial
venting (field supplied).

- Horizontal, vertical or hybrid sealed combustion
double-pipe venting (field supplied).

- Horizontal or vertical single-wall venting (field
supplied).

■ Compact, Esthetic Product Design and zero clearance
to combustibles.

■ Extremely Quiet Operation; quieter than most
refrigerators.

■ True High-Altitude Operation up to 10,000 ft. (3,000 m)
with simple electronic adjustment.

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

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5461 883 - 02

Vitodens 200-W, B2HB 19 to 35 Technical Data

Cross-Section

Vitodens 200-W B2HB 19, 26, 35

Product Information

A Inox-Radial heat exchanger made from stainless steel
– for high operational reliability and a long service life.
Large heating output in the smallest of spaces

B Modulating MatriX cylinder burner for extremely
clean combustion and quiet operation

C Variable speed combustion fan for quiet and
economical operation

D Gas and water connections
E Digital boiler control unit

Delivered condition

Wall mounted gas condensing boiler with Inox-Radial heat
exchanger, modulating MatriX cylinder burner for natural
gas and LPG, plus wall mounting bracket. Vitotronic 200
for weather-compensated operation. Preset for operation
with natural gas. Fully plumbed and wired. White epoxy­coated casing.

Product may not be exactly as shown

The flue gas temperature is only approximately 9-27ºF
(5-15ºC) above boiler return temperature (see chart
below).

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3

Technical Data

Vitodens 200-W, B2HB 19 to 35 Technical Data

Technical Data

Boiler Model No. 200-W B2HB 19 26 35

Natural Gas / Liquid Propane Gas
CSA input

CSA output/DOE *1
heating capacity

Net AHRI rating *2

Heat exchanger surface area ft.

Min. gas supply pressure

Natural gas
Liquid propane gas

Max. gas supply pressure *3

Natural gas
Liquid propane gas

A.F.U.E. % 95 95 95
Weight lbs

Boiler water content USG

Boiler max. flow rate *4 GPM

Max. operating pressure

at 210ºF (99ºC)

Boiler water temperature

- Adjustable high limit (AHL) range
space heating (steady state)

DHW production

- Fixed high limit (FHL)

Boiler connections

Boiler heating supply and return
Pressure relief valve
Drain valve

Boiler supply/return for
indirect-fired DHW storage tank
(field supplied)
Gas valve connection

MBH
(kW)
MBH
(kW)

MBH
(kW)

(m

“w.c.
“w.c.

“w.c.
“w.c.

(kg)

(L)

(L/h)

psig

(bar)

ºF

(ºC)

ºF

(ºC)

ºF (ºC)

NPTM”

NPTF”

(male

thread)

NPT”

NPTF”

12-68

(3.5-20)

11-64

(3.2-19)

55

(16)

2

2)

12.96
(1.2)

4

10

14
14

110
(50)

1.02

(3.88)

6.2

(1400)

45
(3)

68 to 165
(20 to 74)

165
(74)

210 (99)

¾
¾
¾

¾

¾

19-94

(5.5-27)

18-89
(5-26)

76.5
(22)

12.96
(1.2)

10

14
14

110
(50)

1.02

3.88)

6.2

(1400)

45
(3)

68 to 165
(20 to 74)

165
(74)

210 (99)

¾
¾
¾

¾

¾

19-125

(5.5-37)

18-117

(5-34)

102
(30)

12.96
(1.2)

4

110
(50)

1.02

3.88)

(1400)

68 to 165
(20 to 74)

165
(74)

210 (99)

4

10

14
14

6.2

45
(3)

¾
¾
¾

¾

¾

*1 Output based on 140ºF (60ºC), 120ºF (49ºC) system supply/return temperature.

*2 Net AHRI rating based on piping and pick-up allowance of 1.15.

*3 If the gas supply pressure exceeds the maximum gas supply pressure value, a separate gas pressure regulator

must be installed upstream of the heating system.

*4 See “Waterside Flow” starting on page 8 in this manual.

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5461 883 - 02

Vitodens 200-W, B2HB 19 to 35 Technical Data

Technical Data

Technical Data

Boiler Model No. 200-W B2HB 19 26 35

Dimensions

Overall depth

Overall width

Overall height

Flue gas *5

Temperature (at boiler return
temperature of 86ºF (30ºC)

- at rated full load

- at rated partial load

Temperature (at boiler return
temperature of 140ºF (60ºC)

Max. condensate flow rate *6

with natural gas and
TS/TR =122/86ºF (50/30ºC) USG/h

Condensate connection *7 hose

Boiler flue gas connection *8 Ø

Combustion air supply
connection (coaxial)

Sound Rating

- at maximum input

- at minimum input

inches

(mm)

inches

(mm)

inches

(mm)

ºF (ºC)
ºF (ºC)

ºF (ºC)

(L/h)

nozzle

Ø in

in (mm) 23/8 (60) 23/8 (60) 23/8 (60)

outer

Ø in (mm) 4 (100) 4 (100) 4 (100)

dB
dB

15.7

(400)

17¾

(450)

41

(1040)

113 (45)

95 (35)

154 (68)

0.66

(2.5)

15.7

(400)

17¾

(450)

41

(1040)

113 (45)

95 (35)

154 (68)

0.97
(3.7)

¾-1 ¾-1 ¾-1

41
35

48
36

15.7

(400)

17¾

(450)

(1040)

113 (45)

95 (35)

154 (68)

1.21
(4.6)

41

51
36

*5 Measured flue gas temperature with a combustion air temperature of 68°F (20°C).

*6 Based on maximum input rate.

*7 Requires 1 inch (25 mm) tubing. See the Installation Instructions of the Vitodens 200-W, B2HB for details.

*8 For side wall vent installations (coaxial system):

Do not exceed max. equivalent length specified in the Installation Instructions of the Vitodens 200-W, B2HB
Venting System.
Do not attempt to common-vent Vitodens 200-W with any other appliance.
Side wall co-axial vent installation must include Viessmann protective screen!
For details refer to the Installation Instructions for the Vitodens 200-W, B2HB Venting System.

For information regarding other Viessmann System Technology componentry, please reference documentation
of respective product.

Note: For high altitude installation at 10,000 ft. the input for model B2HB 19 to 35 will have an altitude
de-ration of 21%.

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Dimensional Information

Models 200-W, B2HB 19, 26, 35

Vitodens 200-W, B2HB 19 to 35 Technical Data

Legend

A Boiler Supply
B Gas Connection,

C Boiler Return
D Recommended height (single boiler system)

6

¾” NPTF

E Condensate drain
F Combustion air intake (left or right)
G Combustion air intake (through co-axial)

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Vitodens 200-W, B2HB 19 to 35 Technical Data

Recommended Minimum Service Clearances

Minimum Clearances to Combustibles

Top Front Rear Left Right Vent

pipe *1

0 0 AL, CL 0 0 0 0

Minimum Clearances

AL= Alcove
CL= Closet

*1 Refer to the Installation Instructions of the Vitodens
200-W, B2HB Venting System for details.

Note:The Vitodens boiler has passed the zero inches
vent clearance to combustibles testing requirements
dictated by the Harmonized Standard ANSI Z21.13.
CSA 4.9.2000 and therefore is listed for zero
clearance to combustibles when vented with a
single wall special venting system (AL-29-4C
material). The zero inches vent clearance to
combustibles for the Vitodens boiler supercedes
the clearance to combustibles listing that appears
on the special venting system label.

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Waterside Flow

Waterside Flow (primary circuit)

Vitodens 200-W, B2HB 19 to 35 Technical Data

The Vitodens 200-W, B2HB is designed for closed loop,
forced circulation hot water heating systems only. Use
standard friction loss method for pipe sizing. Observe
boiler maximum and minimum flow rate limitations. If
system flow rate exceeds boiler maximum flow rate
(as stated above), falls below the minimum flow rate
or if system flow rate is unknown, Viessmann strongly
recommends the installation of a low-loss header.
An alternative method may be used, such as primary
secondary piping using closely spaced tees.

Supply head pressure (water)

A low-loss header offers additional benefits not provided
by a pair of closely spaced tees. Viessmann therefore
strongly recommends and prefers the use of a low-loss
header over closely spaced tees. See pages 25 and 26
for low-loss header information. Once the low-loss header
is connected, the built-in low-loss header logic of the
Vitodens 200-W boiler ensures the required rt across the
system through the sensory communication between the
low-loss header and the boiler.

Pressure drop (primary circuit) for
Vitodens 200-W, B2HB 19, 26, 35
For sizing an on-site circulation system.
Max. flow rate: 6.2 GPM (1400 L/h)

Flow rate

Typical System Flow Rates

Boiler maximum flow rate 6.2 GPM (1400 L/h)

Model B2HB 19 1 boiler

Output (NG/LPG)
MBH 64

rt for NG/LPG
20ºF (11ºC) rise GPM (L/h) 6.4 (1453)
25ºF (14ºC) rise GPM (L/h) 5.1 (1163)
30ºF (17ºC) rise GPM (L/h) 4.3 (969)
35ºF (19.5ºC) rise GPM (L/h) 3.7 (830)
40ºF (22ºC) rise GPM (L/h) 3.2 (727)

Boiler maximum flow rate 6.2 GPM (1400 L/h)

Model B2HB 26 1 boiler

Output (NG/LPG)
MBH 88

rt for NG/LPG
20ºF (11ºC) rise GPM (L/h) 8.8 (1999)

Boiler maximum flow rate 6.2 GPM (1400 L/h)

Model B2HB 35 1 boiler

Output (NG/LPG)
MBH 117

rt for NG/LPG
20ºF (11ºC) rise GPM (L/h) 11.7 (2657)
25ºF (14ºC) rise GPM (L/h) 9.4 (2126)
30ºF (17ºC) rise GPM (L/h) 7.8 (1771)
35ºF (19.5ºC) rise GPM (L/h) 6.7 (1518)
40ºF (22ºC) rise GPM (L/h) 5.9 (1328)

25ºF (14ºC) rise GPM (L/h) 7.0 (1599)
30ºF (17ºC) rise GPM (L/h) 5.9 (1332)
35ºF (19.5ºC) rise GPM (L/h) 5.0 (1142)
40ºF (22ºC) rise GPM (L/h) 4.4 (999)

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5461 883 - 02

Vitodens 200-W, B2HB 19 to 35 Technical Data

Heating Circuit / Boiler Pumps

System Flow Rates

Viessmann offers a variety of Grundfos heating circuit/
boiler pumps which meet typical Vitodens system
installation requirements (see “Heating circuit pump
(field supplied)” or “Boiler pump (field supplied)” in the
Installation Examples starting on page 28). See tables
below for recommended pumps. Refer to the graph
on page 8 for the proper waterside boiler friction loss
calculations. The following pumps have been selected
based on boiler heat exchanger head loss and boiler piping
to a low-loss header.

Model B2HB 19 B2HB 26 B2HB 35
Flow rate

20ºF rt GPM (L/h)
25ºF rt GPM (L/h)
30ºF rt GPM (L/h)
35ºF rt GPM (L/h)
40ºF rt GPM (L/h)

Flow limitation GPM (L/h) 6.2 (1400) 6.2 (1400) 6.2 (1400)
Recommended boiler pumps Grundfos UPS 15-58 (3-speed), Taco 0015, Wilo Star S 21 FX

6.4 (1453) -- --

5.1 (1163) -- --

4.3 (969) 5.9 (1332) --

3.7 (830) 5.0 (1142) --

3.2 (727) 4.4 (999) 5.9 (1328)

Before using the following pumps for a DHW tank
application, find out the proper pressure drop through the
tank, the required temperature difference through the coil
and system piping head loss of the domestic hot water.

IMPORTANT

Pump selection must be based on accurate system flow
and pressure drop calculations (includes DHW sizing).

Low-Loss Header Application

Sizing of Low-Loss Header in a Residential Single-Boiler Application

Boiler

Model

B2HB 191 6.2

B2HB 261 6.2

B2HB 351 6.2

*1 For system rt < 20° F use low-loss header sizes for rt 20° F.
*2 Low-Loss temperature sensor - is included with the boiler for use in a single boiler application.

No. of
Boilers

Boiler

Max.
Flow

Rate

GPM

(L/h)

(1400)

(1400)

(1400)

Typical System Flow Rates

rt *1

System Flow
Rate
LLH Required
LLH Model

System Flow
Rate
LLH Required
LLH Model

System Flow
Rate
LLH Required
LLH Model

°F

(°C)

GPM

(L/h)

GPM

(L/h)

GPM

(L/h)

20

(11.0)

6.4

(1453)

Yes

80/60

8.8

(1999)

Yes

80/60

11.7

(2657)

Yes

80/60

25

(14.0)

5.1

(1163)

Optional

80/60

7.0

(1599)

Yes

80/60

9.4

(2126)

Yes

80/60

30

(17.0)

4.3

(969)

Optional

80/60

5.9

(1332)

Optional

80/60

7.8

(1771)

Yes

80/60

35

(19.5)

3.7

(830)

Optional

80/60

5.0

(1142)

Optional

80/60

6.7

(1518)

Yes

80/60

40

(22.0)

3.2

(727)

Optional

80/60

4.4

(999)

Optional

80/60

5.9

(1328)

Optional

80/60

Viessmann
Low-loss
Temp.
Sensor
Required*2

Included

Included

Included

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DHW Production

Domestic Hot Water Production

Vitodens 200-W, B2HB 19 to 35 Technical Data

Vitodens 200-W boilers can be used in conjunction
with the stand-alone DHW storage tanks offered by
Viessmann.
All Viessmann DHW storage tanks sold in North America
are available in “Vitosilver” finish only.

Size and select the DHW storage tank based on the
forecasted DHW consumption of the building in question.
For further technical information on DHW storage tanks,
see the Vitocell-V Technical Data Manuals.

For the connection of a stand-alone DHW tank, installation
fittings (field supplied), an external circulating pump for
DHW production (field supplied) and a DHW temperature
sensor (optional equipment, see Viessmann Price List for
order information) are required.

*2

*1 DHW

Connections

(Field Supplied)

Legend

DR Boiler heating return for domestic hot water
production
DS Boiler heating supply for domestic hot water
production
HR Heating Return
HS Heating Supply
BD Boiler Drain
BR Boiler Return
BS Boiler Supply
GC Gas Connection
PRV Pressure Relief Valve
BF Boiler Fill
PG Pressure Gage (not shown)
*1 See page 45 for alternate DHW connection.
*2 Temperature guage

10

IMPORTANT

An adequately sized pre-charged expansion tank must be
used. See Installation Examples for details.

Note:Install the temperature guage (supplied) anywhere
in the supply piping near the boiler (not shown).

5461 883 - 02

Vitodens 200-W, B2HB 19 to 35 Technical Data

Domestic Hot Water Recirculation

DHW Recirculation

Vitocell-V stand-alone DHW storage tank

DHW recirculation lines increase the level of comfort and
convenience of the domestic hot water supply and reduce
water consumption.
These advantages directly derive from the immediate
availability of domestic hot water at all draw points.

Poor insulation of the DHW recirculation line, however,
can result in considerable heat loss. Viessmann therefore
recommends that effective insulation be provided and
used for DHW recirculation lines of 23 ft. (7 m) in length
or longer.

Legend

DCW Domestic Cold Water
DHW Domestic Hot Water
TPV Temperature and Pressure Relief Valve
(on tank - not shown)
R DHW Recirculation Line
RP DHW Recirculation Pump

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Wall Mounting

Mounting Bracket

Vitodens 200-W, B2HB 19 to 35 Technical Data

Fitting the wall mounting bracket

See the installation instructions applicable to the
mounting bracket on each type of material.

CAUTION

Whichever mounting method is used, ensure that the
bracket is tightly and securely fastened to wall. Failure
to secure boiler properly could cause boiler to loosen,
posing a severe safety hazard.

Models B2HB 19, 26, 35

1. Remove the external accessories connection box
cover.

2. Loosen the screws at the bottom of the boiler
(do not remove completely).

3. Remove the front encloser panel (lift up and pull
away from the boiler).

4. Mount boiler onto the mounting bracket and connect
boiler to the installation fittings.

5. Ensure the boiler is securely mounted.

CAUTION

The boiler must be level both vertically and horizontally
to ensure proper draining of the condensate.

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5461 883 - 02

Vitodens 200-W, B2HB 19 to 35 Technical Data

Boiler Stand for B2HB 19 to 35

Frame Mounting

The boiler stand is used for free-standing installation of a
single boiler within the mechanical room.

When using the boiler stand, ensure that the stand is
securely fastened to the floor (recommended concrete
expansion anchors are Hilti model KB-TZ e x 4 or
equivalent.

The Vitodens 200-W, model B2HB does not come with
a mounting template. The wall location for the frame,
mounting bracket and all vents must be field calculated.

Boiler mounting bracket and frame

1. Attach the wall mounting bracket (supplied with the
boiler) to the boiler mounting frame using the supplied
hardware. Ensure that the wall mounting bracket is
level.

2. Move the rack into position and secure to the floor
(and to the wall if needed).

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Frame Mounting

Models B2HB 19, 26, 35

Vitodens 200-W, B2HB 19 to 35 Technical Data

1. Remove the external accessories connection box
cover.

2. Loosen the screws at the bottom of the boiler
(do not remove completely).

3. Remove the front encloser panel (lift up and pull
away from the boiler).

4. Mount boiler onto the mounting bracket and ensure
the boiler is securely mounted. Then install the
holding bracket to the frame on top of the boiler.

5. Connect the boiler to the installation fittings.

CAUTION

The boiler must be level both vertically and horizontally
to ensure proper draining of the condensate.

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