Viessmann Vitodens 200-W WB2B Series, Vitodens 200-W, WB2B-19, WB2B-26, WB2B-35 Technical Data Manual
...
Technical Data Manual
Model Nos. and pricing: see Price List
VITODENS200-W
Gas-fired wall-mounted condensing boiler
31 to 370 MBH / 9 to 105 kW
Multi-boiler installation 320 to 1480 MBH/
Vitodens 200-W
WB2B Series
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
For Natural Gas and Liquid Propane Gas
Heating input 31 to 370 MBH
for NG and LPG 9 to 105 kW
5369 295 v1.5 09/2012
This trademark is registered with the U.S. Patent and Trademark Office.
Product Information
5
3
6
9
2
9
5
v
1
.
5
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:
HBest value in its class with new
industry-leading technology and the most
standard features.
HHighest Efficiency up to 98% at full
modulation and up to 96.1% A.F.U.E.
CSA thermal efficiency rating to ANSI
Z.21.13/CSA 4.9 of 94.5% (for model
WB2B 105 only). Energy Star and the
CSA Energy Performance are not
applicable for model WB2B 105.
HLasting performance with industry-leading
Viessmann made SA240 316 Ti stainless
steel Inox-Radial heat exchanger
constructed to CSA B51 and ASME
Section IV.
HLow Emission Combustion with Viessmann
made stainless steel MatriX cylinder
burner. Factory calibrated.
HFast 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.
HPowerful and User-friendly
Viessmann Vitotronic on-board
multi-function outdoor reset boiler and
system control for multi-temperature
space and DHW heating.
HCompact, Esthetic Product Design
and zero clearance to combustibles.
HExtremely Quiet Operation; quieter than
most refrigerators.
HTrue High-Altitude Operation up to
10,000 ft. / 3,000 m with simple
electronic adjustment.
HEfficiency up to 98% through intensive
condensation. The flue gas temperature is
only approximately 9-27º F (5-15º C)
above boiler return temperature (see chart
below).
HExpanded Application Range with
increased capacity up to 370 MBH.
Multi-boiler installation up to 1480 MBH
with up to 4 boilers (models WB2B 45,
60, 80, 105).
HGreater Venting Flexibility with increased
vent length (up to 180 ft. / 55 m) and
multiple venting options.
- Horizontal or vertical sealed combustion
coaxial venting (factory supplied).
- Horizontal, vertical or hybrid sealed
combustion double-pipe venting (field
supplied).
- Horizontal or vertical single-wall venting
(field supplied).
2
Inox-Radial
5
3
6
9
2
9
5
v
1
.
5
heat exchanger
Modulating MatriX
cylinder burner
Cross-Section
Vitotronic 200, HO1
on-board outdoor
reset control
Boiler may not look exactly as illustrated.
3
Technical Data
5
3
6
9
2
9
5
v
1
.
5
Table 1.
Boiler Model Model No. WB2B- 19 26 35 45 60 80 105*
Natural gas / Liquid propane gas
CSA input
CSA output/DOE
*1
heating capacity
Net I=B=R 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. % 96.1 96.1 96.1 96.1 96.1 96.1
CSA thermal efficiency
ANSI Z21.13/CSA 4.9 % 94.5
Weight lbs
Boiler water content USG
Boiler max. flow rate
*4
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 NPTM “
Pressure relief valve NPTF “
Drain valve (male
MBH
kW
MBH
kW
31-67
9-20
28-61
8-18
31-93
9-27
28-85
8-25
31-125
9-37
28-114
8-33
60-160
17-47
55-146
16-43
60-212
17-62
55-194
16-57
104-285
30-83
95-260
28-76
104-370
30-108
98-350
29-103
MBH 53 74 99 127 169 226 304
2
2
m
“w.c.
“w.c.
“w.c.
“w.c.
kg
L
GPM
L/h
psig
bar
ºF/
ºC
ºF/
ºC
ºF/ºC
10.23
0.95
10
14
14
102
46
0.87
3.3
6.2
1400
45
¾
¾
¾
10.23
0.95
4
4
10
14
14
102
46
0.87
3.30
6.2
1400
45
3
3
¾
¾
¾
10.23
0.95
10
14
14
102
46
0.87
3.3
6.2
1400
45
68 to 165 /
20 to 74
165 /
74
210/99
¾
¾
¾
15.76
1.46
4
4
10
14
14
155
70
1.9
7.2
15.4
3500
60
3
4
15.76
1.46
10
14
14
155
70
1.9
7.2
15.4
3500
60
28.88
2.68
4
28.88
2.68
4
10
14
14
225
102
225
102
3.4
12.8
35.2
8000
12.8
35.2
8000
60
4
4
68 to 176 /
20 to 80
176 /
80
210/99
1¼
¾
¾
1¼
¾
¾
1¼
¾
¾
thread)
10
14
14
3.4
60
1¼
¾
¾
A
4
4
Boiler supply/return for
indirect-fired DHW storage tank NPT”
(field supplied)
Gas valve connection NPTF
*AFor high altitude installations (5,000 - 10,000 ft.), the input for model WB2B 105 will have an altitude de-ration of 14% for 5,000 ft.
and 28% for 10,000 ft. (average of 2.8% / 1,000 ft.).
*1
Output based on 140ºF / 60ºC, 120ºF / 49ºC system supply/return temperature.
*2
Net I=B=R 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 “Typical System Flow Rates” on page 11 in this manual.
4
¾
¾
¾
¾
¾
¾
1¼
1¼
1
1
1¼
1¼
1
1
Technical Data
5
3
6
9
2
9
5
v
1
.
5
Table 1 (continued)
Boiler Model Model No. WB2B- 19 26 35 45 60 80 105*
Dimensions
Overall depth
Overall width
Overall height
Height with flue gas elbow
(accessory)
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)
Average condensate
flow rate
*6
with natural gas and
TS/TR=104/86ºF / 40/30ºC USG/day
Condensate connection
*7
Boiler flue gas connection
Combustion air supply
connection (coaxial)
*8
inches
mm
inches
mm
inches
mm
inches
mm
ºF/ºC
ºF/ºC
ºF/ºC
L/day
14
360
17¾
450
33½
850
44
1116
113/45
95/35
154/68
2.6-3.4
10- 12
14
360
17¾
450
33½
850
44
1116
113/45
95/35
158/70
2.9-3.4
11- 13
14
360
17¾
450
33½
850
44
1116
113/45
95/35
158/70
4-4.5
15- 17
15
380
19
480
33½
850
47¼
1200
95/35
91/33
149/65
3.7-5
14- 19
15
380
19
480
33½
850
47¼
1200
104/40
95/35
158/70
6-7.4
23- 28
21
530
19
480
33½
850
47¼
1200
95/35
91/33
149/65
6.6-7.9
25-30
hose
nozzle
∅ in 1 1 1 1 1 1 1
*8
∅
in/mm
3
2
/
8
/60 2
3
/
/60 2
8
3
/
/60 3¼/80 3¼/80 4
8
3
/
/110 4
8
outer
∅ in/mm 4/100 4/100 4/100 5/125 5/125 6/150 6/150
*9
530
480
33½
850
47¼
1200
104/40
95/35
158/70
9.5-10.5
35-40
3
/
/110
8
A
21
19
*9
*AFor high altitude installations (5,000 - 10,000 ft.), the input for model WB2B 105 will have an altitude de-ration of 14% for 5,000 ft.
and 28% for 10,000 ft. (average of 2.8% / 1,000 ft.).
*5
Measured flue gas temperature with a combustion air temperature of 68°F / 20°C.
*6
Based on typical boiler cycles, including partial load conditions.
*7
Requires 1” / 25 mm tubing. See the Installation Instructions of the Vitodens 200-W, WB2B 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, WB2B Venting System.
A maximum of 5 elbows may be installed in the vent system.
Do not attempt to common-vent Vitodens 200-W with any other appliance.
Venting material to be supplied by Viessmann only; side wall vent installation must include Viessmann protective screen!
For details refer to the Installation Instructions for the Vitodens 200-W, WB2B Venting System.
*9
Add 2½” / 65 mm for coaxial vent pipe transition adaptor.
" For information regarding other Viessmann System Technology componentry, please reference documentation of respective product.
5
*1
5
3
6
9
2
9
5
v
1
.
5
Dimensional Information
Models WB2B 19, 26, 35
2½” /
65 mm
7” / 177 mm
2¾” /
70 mm
17¾” /
450 mm
13¾” /
348 mm
2¾” /
70 mm
78” / 1975 mm
for single boiler
4” / 102 mm
4” / 102 mm
87/8” / 225 mm
12” /
300 mm
installation
6¼” / 158 mm
55/8” /
143 mm
33½” /
850 mm
1¾” /
44 mm
141/8” /
360 mm
Fig. 2
Floor line
Fig. 1
Legend
BD Boiler Drain
BR Boiler Return
BS Boiler Supply
AV Air Vent (not shown)
GC Gas Connection, ¾” NPT
PRV Pressure Relief Valve
BF Boiler Fill
PG Pressure Gage
EXT Extension Adaptors, ¾” NPT
DR Boiler heating return for domestic hot
water production ¾” (field supplied)
DS Boiler heating supply for domestic
hot water production ¾” (field
supplied)
*
1
See page 38 for alternate DHW
connection.
BD
Fig. 3
PRV
DS
EXTEXT
GC
BS
*1DHW Connections
(Field Supplied)
BR
BF
DR
6
Models WB2B 45, 60
5
3
6
9
2
9
5
v
1
.
5
Dimensional Information
9½” /
240 mm
6½” /
165 mm
PG
19” / 480 mm
15¾” /
400 mm
9½” / 240 mm
39” /
996 mm
35½” /
902 mm
3” / 80 mm
9½” / 240 mm
51” /
1301 mm
41¾” /
1061 mm
6½” /165 mm
12” /
305 mm
5½” / 146 mm
Ø 5” /
125 mm
33½ “/
850 mm
78” / 1975 mm
for single boiler
installation
4” / 100 mm
15” /
380 mm
Fig. 5
Floor line
Fig. 4
Legend
BD Boiler Drain
BR Boiler Return
BS Boiler Supply
AV Air Vent (not shown)
GC Gas Connection, 1” NPT
PRV Pressure Relief Valve
BF Boiler Fill
PG Pressure Gage
DR Boiler heating return for domestic hot
water production 1¼” NPT (field supplied)
DS Boiler heating supply for domestic hot
water production 1¼” NPT (field supplied)
*1See page 38 for alternate DHW
connection.
BD
Fig. 6
PRV
DS
GC
BS
*1DHW Connections
(Field Supplied)
BR
BF
DR
7
Dimensional Information
5
3
6
9
2
9
5
v
1
.
5
Models WB2B 80, 105
19” /
480mm
4¼” /
108mm
9½” /
240mm
115/8“ / 295mm
for WB2B 80-105
using the coaxial
vent system
15¾” /
400mm
9½” /
236mm
43” /
33½” /
PG
9½” /
240mm
3” / 80mm
6½” /
165mm
Fig. 7
Legend
BD Boiler Drain
BR Boiler Return
BS Boiler Supply
GC Gas Connection, 1” NPT
PRV Pressure Relief Valve
BF Boiler Fill
PG Pressure Gage
DR Boiler heating return for domestic hot water production 1¼”
DS Boiler heating supply for domestic hot water production 1¼”
*1See page 38 for alternate DHW connection.
15¾” /
400mm
Floor line
9½” / 240mm
1090mm
850mm
78” / 1975 mm
for single boiler
installation
BD
Fig. 8
Fig. 9
PRV
DS
4” / 102mm
21” /
530mm
GC
BS
*1DHW Connections
(Field Supplied)
BR
BF
DR
8
Recommended Minimum Service Clearances
5
3
6
9
2
9
5
v
1
.
5
Side
12” / 305 mm
Top
12”/305 mm
Front
28” / 700 mm
Side
Minimum Clearances
Back
0”/mm
Fig. 10
0”/mm
Minimum Clearances to Combustibles
Top Front Rear Left Right Vent pipe
0 0 AL, CL 0 0 0 0
AL= Alcove
CL= Closet
*1
Refer to the Installation Instructions of the Vitodens 200-W, WB2B Venting System for details.
Please 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.
*1
9
Waterside Flow
5
3
6
9
2
9
5
v
1
.
5
Waterside Flow (primary circuit)
The Vitodens 200-W, WB2B is designed for closed loop, forced circulation hot water heating systems only.
H(ft.)
26
23
19.7
16.4
13.1
9.8
6.6
3.3
Supply head pressure (water)
Fig. 11
H(ft.)
20.1 6.1
16.7
13.4
10.0 3.1
6.7 2.0
H(m)
8
7
6
5
4
3
2
1
0
0
0 500 1000 1500
0 2.2 4.4 6.6 8.8 GPM
H(m)
5.1
4.1
2000 l/h
Pressure drop (primary circuit) for Vitodens
200-W, WB2B 19, 26, 35
For sizing an on-site circulation system.
Max. flow rate: 1400 L/h / 6.2 GPM
Pressure drop (primary circuit) for Vitodens
200-W, WB2B 45, 60
For sizing an on-site circulation system.
Max. flow rate 3500 L/h / 15.4 USGPM
3.4 1.0
0 0
Supply head pressure (water)
Fig. 12
H(ft.) H(m)
33.5
30.1 9.2
6.7
Supply head pressure (water)
Fig. 13
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. 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 page 13 for low-loss header information.
10.2
8.226.8
7.123.4
6.120.1
5.116.7
4.113.4
3.110.0
2.0
1.03.4
0
0
00
500 1000 1500 2000 2500
2.2 4.4 6.6 8.8 11
0
1000
0
4.4
2000 3000
8.8 13.2 17.6 22.0 26.4 30.8 35.2
4000
5000 6000
3000 3500
13.2
7000
15.4
8000 l/h
l/h
GPM
Pressure drop (primary circuit) for Vitodens
200-W, WB2B 80, 105
For sizing an on-site circulation system.
Max. flow rate 8000 L/h / 35.2 USGPM
GPM
10
Typical System Flow Rates
5
3
6
9
2
9
5
v
1
.
5
System Flow Rates
Table 2.
Model WB2B 19 26 35
∆∆∆∆
t for NG/LPG
Output (NG/LPG)
20ºF rise (GPM) 6.1 8.5 11.4
25ºF rise (GPM) 4.9 6.8 9.1
30ºF rise (GPM) 4.1 5.7 7.6
35ºF rise (GPM) 3.5 4.9 6.5
40ºF rise (GPM) 3.1 4.3 5.7
Table 3.
Model WB2B 45 60
∆∆∆∆
t for NG/LPG
Output (NG/LPG)
20ºF rise (GPM) 14.6 19.4
25ºF rise (GPM) 11.7 15.5
30ºF rise (GPM) 9.7 12.9
35ºF rise (GPM) 8.3 11.1
40ºF rise (GPM) 7.3 9.7
Table 4.
Model WB2B 80 105
∆∆∆∆
t for NG/LPG
Output (NG/LPG)
20ºF rise (GPM) 26.0 35.0
25ºF rise (GPM) 20.8 28.0
30ºF rise (GPM) 17.3 23.3
35ºF rise (GPM) 14.9 20.0
40ºF rise (GPM) 13.0 17.5
Btu/h
61 000 85 000 114 000
Btu/h
Btu/h
146 000 194 000
260 000 350 000
Boiler max. flow rate 1400 L/h (6.2 GPM)
Boiler max. flow rate 3500 L/h (15.4 GPM)
Boiler max. flow rate 8000 L/h (35.2 GPM)
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. Once the low-loss header is connected, the built-in low-loss header logic of the Vitodens
200-W boiler ensures the required
See page 13 for low-loss header information.
∆∆∆∆
T across the system through the sensory communication between the low-loss header and the boiler.
11
Pump Information
5
3
6
9
2
9
5
v
1
.
5
Heating Circuit / Boiler Pumps
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 29). See tables below
for recommended pumps. Refer to the graphs on page 10 for the proper waterside boiler friction loss calculations.
IMPORTANT
Pump selection must be based on accurate
system flow and pressure drop calculations
(incl. DHW sizing).
The following pumps have been selected based on boiler heat exchanger head loss and boiler piping to a low-loss header. 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.
Table 5.
Model WB2B 19 26 35
Flow rate
20 ºF
∆∆∆∆
t
25 ºF
∆∆∆∆
t
30 ºF
∆∆∆∆
t
35 ºF
∆∆∆∆
t
40 ºF
∆∆∆∆
t
Flow limitation L/h / GPM 1400 / 6.2
Recommended boiler pumps Grundfos 15-58 (3-speed)
6.1 8.5 11.4
4.9 6.8 9.1
4.1 5.7 7.6
3.5 4.9 6.5
3.1 4.3 5.7
Taco 00R
Wilo Star S 21 FX
Table 6.
Model WB2B 45
Flow rate Boiler pressure
20 ºF
∆∆∆∆
t
25 ºF
∆∆∆∆
t
30 ºF
∆∆∆∆
t
35 ºF
∆∆∆∆
t
40 ºF
∆∆∆∆
t
Flow limitation L/h / GPM 3500 / 15.4
Table 7.
Model WB2B 60
20 ºF
∆∆∆∆
t
25 ºF
∆∆∆∆
t
30 ºF
∆∆∆∆
t
35 ºF
∆∆∆∆
t
40 ºF
∆∆∆∆
t
Flow limitation L/h / GPM 3500 / 15.4
14.6 15.8 UPS 26-99FC, 115V, Speed3
11.7 10.0 UPS 26-99FC, 115V, Speed2 UP 26-64F, 115V
9.7 7.5 UPS 26-99FC, 115V, Speed2
8.3 5.8 UPS 26-99FC, 115V, Speed1
7.3 4.2 UPS 26-99FC, 115V, Speed1
Flow rate Boiler pressure
19.4 Not Recommended Not Recommended
15.5 16.7 UPS 26-99FC, 115V, Speed3
12.9 12.6 UPS 26-99FC, 115V, Speed3 UP 26-64F, 115V
11.1 9.2 UPS 26-99FC, 115V, Speed2 UP 26-64F, 115V
9.7 7.5 UPS 26-99FC, 115V, Speed2
drop (ft.)
drop (ft.)
Recommended pump option 1
Grundfos
Recommended pump option 1
Grundfos
Recommended pump option 2
Grundfos
Recommended pump option 2
Grundfos
12
Pump and Low-Loss Header Information
5
3
6
9
2
9
5
v
1
.
5
Heating Circuit / Boiler Pumps
Table 8.
Model WB2B 80
20 ºF
∆∆∆∆
t
25 ºF
∆∆∆∆
t
30 ºF
∆∆∆∆
t
35 ºF
∆∆∆∆
t
40 ºF
∆∆∆∆
t
Flow limitation L/h / GPM 8000 / 35.2
Table 9.
Model WB2B 105
20 ºF
∆∆∆∆
t
25 ºF
∆∆∆∆
t
30 ºF
∆∆∆∆
t
35 ºF
∆∆∆∆
t
40 ºF
∆∆∆∆
t
Flow limitation L/h / GPM 8000 / 35.2
Table 10. Sizing of Low-Loss Header in a Residential Single-Boiler Application
Boiler
Model
WB2B 19 1 6.1
WB2B 26 1 6.1
WB2B 35 1 6.1
WB2B 45 1 15.4
WB2B 60 1 15.4
WB2B 80 1 35
WB2B 105 1 35
No. of
Boilers
Boiler
Max.
Flow Rate
1385
1385
1385
3498
3498
7949
7949
(continued)
Flow rate Boiler pressure
26.0 16.7 UPS 32-160/2, 115V, Speed1 / UPS 26-150F, 115V, Speed 3
20.8 9.2 UPS 26-99FC, 115V, Speed3
17.3 6.5 UPS 26-99FC, 115V, Speed2
14.9 4.8 UPS 26-99FC, 115V, Speed2
13.0 3.4 UPS 26-99FC, 115V, Speed2
Flow rate Boiler pressure
35.0 30.0 UPS 32-160/2, 115V, Speed3
28.0 20.0 UPS 32-160/2, 115V, Speed2 / UPS 26-150F, 115V, Speed 3
23.3 12.5 UPS 32-160/2, 115V, Speed1
20.0 9.0 UPS 26-99FC, 115V, Speed3
17.5 6.4 UPS 26-99FC, 115V, Speed2
Typical System Flow Rates Viessmann
System
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
∆∆∆∆
t *1
drop (ft.)
drop (ft.)
1385
80/60
1931
80/60
2589
80/60
3316
80/60
4406
80/60
5905
120/80
7949
120/80
20
11.0
6.1
Yes
8.5
Yes
11.4
Yes
14.6
Yes
19.4
Yes
26.0
Yes
35.2
Yes
25
13.9
4.9
1108
Optional
80/60
6.8
1544
Yes
80/60
9.1
2071
Yes
80/60
11.7
2653
Optional
80/60
15.5
3525
Yes
80/60
20.8
4724
Yes
120/80
28.0
6359
Yes
120/80
30
16.8
4.1
924
Optional
80/60
5.7
1287
Optional
80/60
7.6
1726
Yes
80/60
9.7
2211
Optional
80/60
12.9
2937
Optional
80/60
17.3
3937
Optional
120/80
23.3
5300
Yes
120/80
Recommended pump
Grundfos
Recommended pump
Grundfos
35
16.1
3.5
792
Optional
80/60
4.9
1103
Optional
80/60
6.5
1480
Yes
80/60
8.3
1895
Optional
80/60
11.1
2518
Optional
80/60
14.9
3374
Optional
120/80
20.0
4542
Optional
120/80
13.4
Optional
80/60
Optional
80/60
1295
Optional
80/60
1658
Optional
80/60
2203
Optional
80/60
13.0
2953
Optional
120/80
17.5
3975
Optional
120/80
40
3.1
693
4.3
965
5.7
7.3
9.7
°F
°C
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
Temp. Sensor
Required
Yes
Yes
Yes
Yes
Yes
Yes
Yes
*1
For system ∆t < 20°F use low-loss header sizes for ∆t 20°F.
13
Low-Loss Header Information
5
3
6
9
2
9
5
v
1
.
5
Low-Loss Header Application
Table 11. Sizing of Low-Loss Header in a Commercial Multiple-Boiler Application
Boiler
Model
WB2B 45 2 15.4
WB2B 45 3 15.4
WB2B 45 4 15.4
WB2B 60 2 15.4
WB2B 60 3 15.4
WB2B 60 4 15.4
WB2B 80 2 35
WB2B 80 3 35
WB2B 80 4 35
WB2B 105 2 35
WB2B 105 3 35
WB2B 105 4 35
No. of
Boilers
Boiler
Max.
Flow
Rate
3498
3498
3498
3498
3498
3498
79497015899
7949
7949
79497015899
7949
7949
Total
Flow
Rate
30.8
6995
46.2
10493
61.6
13991
30.8
6995
46.2
10493
61.6
13991
105
23848
140
31797
105
23848
140
31797
(continued)
Typical System Flow Rates Viessmann
System
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
System Flow Rate
LLH Required
LLH Model
∆∆∆∆
t *1
20
11.0
29.2
6632
Yes
120/80
43.8
9948
Yes
160/80
58.4
13264
Yes
200/120
38.8
8812
Yes
160/80
58.2
13219
Yes
200/120
77.6
17625
Yes
200/120
52.0
11810
Yes
200/120
78.0
17716
Yes
200/120
104.0
23621
Yes
250/150
70
15899
Yes
200/120
105
23848
Yes
250/150
140
31797
Yes
300/200
13.9
23.4
5306
Yes
120/80
35.0
7958
Yes
120/80
46.7
10611
Yes
200/120
31.0
7050
Yes
120/80
46.6
10575
Yes
200/120
62.1
14100
Yes
200/120
41.6
9448
Yes
160/80
62.4
14173
Yes
200/120
83.2
18897
Yes
250/150
12719
Yes
200/120
19078
Yes
250/150
112
25438
Yes
250/150
25
56
84
30
16.8
19.5
4421
Yes
120/80
29.2
6632
Yes
120/80
38.9
8843
Yes
160/80
25.9
5875
Yes
120/80
38.8
8812
Yes
160/80
51.7
11750
Yes
200/120
34.7
7874
Yes
160/80
52.0
11810
Yes
200/120
69.3
15747
Yes
200/120
47
10599
Yes
200/120
70
15899
Yes
200/120
93
21198
Yes
250/150
35
16.1
16.7
3790
Yes
120/80
25.0
5685
Yes
120/80
33.4
7579
Yes
120/80
22.2
5036
Yes
120/80
33.3
7554
Yes
120/80
44.3
10071
Yes
160/80
29.7
6749
Yes
160/80
44.6
10123
Yes
200/120
59.4
13498
Yes
200/120
40
9085
Yes
160/80
60
13627
Yes
200/120
80
18170
Yes
200/120
40
13.4°F°C
14.6
3316
Yes
120/80
21.9
4974
Yes
120/80
29.2
6632
Yes
120/80
19.4
4406
Yes
120/80
29.1
6609
Yes
120/80
38.8
8812
Yes
160/80
26.0
5905
Yes
160/80
39.0
8858
Yes
160/80
52.0
11810
Yes
200/120
35
7949
Yes
160/80
53
11924
Yes
200/120
70
15899
Yes
200/120
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
GPM
L/h
Temp.Sensor
Required
*2
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
NOTE: for multiple boiler applications when using the the Vitodens 200-W, WB2B boilers, refer to the multiple boiler low-loss distribution
manifold installation instructions.
*1
For system ∆∆∆∆t < 20°F use low-loss header sizes for ∆∆∆∆t 20°F.
*
2
Low-Loss sensor - standard equipment of the Vitocontrol-S WB2B: for use in multiple boiler applications.
14
Loading...