Technical Data Manual

Model Nos. and pricing: see Price List

Vitocell 300-B

EVB Series

Dual-coil, indirect-fired domestic hot water storage tank

79 USG and 119 USG (300 L and 450 L) capacity

Product may not be exactly as shown

Vertical indirect-fired domestic hot water storage tank of high-grade stainless steel with two coils.

One heat exchanger coil facilitates heat transfer from the solar collectors to domestic hot water, a second heat exchanger coil allows reheating of the water content by the hot water heating boiler.

CAUTION

This tank version is not suitable for steam heating applications.

5672 343 - 02 10/2015

2

Product Information

Benefits

Domestic hot water storage tank of high-grade stainless steel highly effective all-around thermal insulation.

Fully hygienic, efficient and economical domestic hot water production by solar collectors and a hot water heating boiler. Heat from the solar collectors is transferred to the domestic hot water via the lower tank coil.

Benefits at a glance:

Corrosion-resistant tank of high-grade SA 240-316

Ti stainless steel offers a long service life.

Fully hygienic due to high quality homogeneous stainless steel surfaces.

The high-alloy material is immune to cracking or peeling. The tank stays hygienic and requires only

Does not require a consumable anode for corrosion

protection.

The entire water content is heated by a 1a in. (34 mm)

diameter stainless steel heat exchanger surface which extends to the bottom of the tank.

Large heat exchanger surfaces allow fast and even heating of the entire water content, guaranteeing a high level of domestic hot water comfort.

Standby losses minimized by highly effective HCFC-

free

79 USG (300 L) version comes equipped with hard foam.

119 USG (450 L) version is supplied with removable soft PET insulation for easier handling.

Two thermometers to show the DHW temperature at the top of the tank, and at the midpoint of the

tank.

Tank design is accepted in the State of

Massachusetts as being ASME equivalent.

Certified to CSA Low Lead Content Certification

Program; including US Safe Drinking Water Act, NSF/ANSI

372 as well as other applicable US State

requirements.

Vitocell 300-B, EVB Series Technical Data

Vitocell 300-B, EVB Series Technical Data

Cross Section

Product Information

3

Technical Data

Technical Data

Vitocell 300-B, EVB Series Technical Data

For DHW production in conjunction with solar systems, heating boilers and heating systems, without low limit for dual coil operation.

Suitable for heating systems with:

max. working pressure on heat exchanger side up to 220 psig at 392°F (200°C)

max. working pressure on DHW water side of up to 150 psig at 210°F (99°C)

max. testing pressure on DHW side of 300 psig

Storage capacity

Coil

Recovery rates*3

with a DHW temperature increase from 50 to 113ºF

(10 to 45ºC) and a supply water temperature of......

Recovery rates*3

with a DHW temperature increase from 50 to 140ºF

(10 to 60ºC) and a supply water temperature of......

Supply flow rate

for the recovery rates stated

Insulation

Standby losses*4

Dimensions*5

Tank length without insulation

Overall length with insulation

Tank width without insulation

Overall width with insulation

Tank height without insulation

Overall height with insulation*6

Tilt height without insulation

Tilt height with insulation

Weight

Tank with insulation

Heat exchanger coil

Heat exchanger surface area

Connections

Coils

Domestic cold/hot water

Recirculation

USG (L)

GPM m 3/h

MBH/24 h in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm)

∅ in. (male NPT thread)

∅ in. (male NPT thread)

∅ in. (male NPT thread)

79 (300)

upper*1 lower*2

273 (80)

519 (1965)

218 (64)

415 (1572)

318 (93)

604 (2285)

246 (72)

467 (1769)

154 (45)

292 (1106)

96 (28)

182 (688)

51 (15)

97 (368)

253 (74)

336 (1273)

178 (52)

337 (1277)

102 (30)

195 (737)

51 (15)

97 (368)

280 (82)

372 (1410)

184 (54)

245 (929)

120 (35)

159 (602)

22.0

5.0

202 (59)

268 (1014)

140 (41)

186 (705)

22.0

5.0

PUR Foam

7.2

--

25 (633)

--

27c (704)

--

70 (1779)

--

71f (1821)

119 (450)

upper*1 lower*2

273 (80)

519 (1965)

218 (64)

415 (1572)

154 (45)

292 (1106)

96 (28)

182 (688)

51 (15)

97 (368)

253 (74)

336 (1273)

184 (54)

245 (929)

120 (35)

159 (602)

22.0

5.0

328 (96)

623 (2358)

249 (73)

474 (1793)

191 (56)

364 (1376)

126 (37)

240 (909)

61 (18)

117 (442)

276 (81)

368 (1393)

212 (62)

282 (1066)

147 (43)

195 (739)

22.0

5.0

Soft PET insulation

9.2

28 (715)

36b (925)

36 (914)

38e (975)

65b (1667)

68b (1738)

66b (1690)

-lbs (kg) 251 (114)

USG (L) 2.9 (11) 2.9 (11)

275 (125)

2.9 (11) 3.9 (15) ft.

2 (m 2 ) 16.1 (1.5) 16.1 (1.5) 15.6 (1.45) 20.5 (1.9)

1

1

1

1a

1a

1a

*1 The upper coil is designated for connection to a hot water heating boiler or a heat pump.

*2 The lower coil is designated for connection to solar collector panels or heat pumps.

*3 When planning for the recovery rate as stated or calculated, allow for the corresponding circulation pump.

The stated recovery rate is only achieved when the rated output of the boiler is equal to or greater than that stated under “Recovery rate”.

*4 Measured values are based on a room temperature of 68°F (20ºC) and a domestic hot water temperature of

149°F (65ºC) and can vary by ± 5%.

*5 For other dimensions, see illustrations and tables on pages 5 and 6.

*6 Adjustable feet can be adjusted up to 2 in. (50 mm).

4

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

Vitocell 300-B, EVB Series Technical Data

79 USG (300 L) Tank

Dimensions

79 USG (300 L) Tank

DHW tank temperature sensor in solar heating applications 79 USG (300 L).

Technical Data

Dimensions

Storage capacity

a k m d e b c f g h n

USG (L)

in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm)

79 (300)

3b (87)

12 (301)

29b (751)

37b (951)

33g (1101)

54 (1369)

64b (1640)

14 (357)

4 (100)

29b (751)

54 (1369)

Legend

IO Inspection and clean-out opening

D Drain

BWR Boiler water return (upper coil)

SCR Solar collector return (lower coil) or boiler return

BWS Boiler water supply (upper coil)

SCS Solar collector supply (lower coil) or boiler supply

DCW Domestic cold water

SW1 Sensor well opening for DHW tank temperature sensor or boiler controller aquastat (located at the same height as BWS [79 USG (300 L) only],

rotated

SW2 Sensor well for lower thermometer at SCS level

DHW Domestic hot water

RT Recirculation tapping

TPV Temperature and pressure relief valve

*

1

For solar heating systems Viessmann recommends placement of the DHW tank temperature sensor in

the solar collector return (SCR). This requires a

brass elbow with sensor well (see price list, Vitosol

accessory).

The DHW tank temperature sensor of the boiler control is placed in SW1.

Legend

A DHW tank temperature sensor for solar application

(included with solar control unit)

B

Brass elbow with sensor well

C Solar collector return connection.

5

Technical Data

119 USG (450 L) Tank

Dimensions

119 USG (450 L) Tank

DHW tank temperature sensor in solar heating applications 119 USG (450 L).

Vitocell 300-B, EVB Series Technical Data

Dimensions

Storage capacity

a d e b c f g h k m n

USG (L)

in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm) in. (mm)

119 (450)

3b (102.5)

17c (453)

31b (802)

35c (912)

39c (1012)

47c (1216)

63 (1601)

20 (508)

4 (100)

32 (802)

46 (1170)

Legend

IO Inspection and clean-out opening

D Drain

BWR Boiler water return (upper coil)

SCR Solar collector return (lower coil) or boiler return

BWS Boiler water supply (upper coil)

SCS Solar collector supply (lower coil) or boiler supply

DCW Domestic cold water

SW1 Sensor well opening for DHW tank temperature sensor or boiler controller aquastat.

SW2 Sensor well for lower thermometer at SCS level

DHW Domestic hot water

RT Recirculation tapping

TPV Temperature and pressure relief valve

*

1

For solar heating systems Viessmann recommends placement of the DHW tank temperature sensor in

the solar collector return (SCR). This requires a

brass elbow with sensor well (see price list, Vitosol

accessory).

The DHW tank temperature sensor of the boiler control is placed in SW1.

6

Legend

A DHW tank temperature sensor for solar application

(included with solar control unit)

B

Brass elbow with sensor well

C

Solar collector return connection.

Vitocell 300-B, EVB Series Technical Data

Water Flow

Pressure drop on heating water side of a single coil Domestic hot water pressure drop

Technical Data

Legend

A

Lower indirect coil, 119 USG (450 L) capacity

B Lower indirect coil, 79 USG (300 L) capacity

C Upper indirect coil, 79 USG (300 L) and

119 USG (450 L) capacity

Domestic hot water draw rate

Storage tank contents heated to 140ºF (60ºC), boiler not reheating

Storage capacity

Domestic hot water draw

Water with t = 140ºF (60ºC) (constant)

Percentage tank volume

USG (L)

USG (L)

%

79 (300)

34 (128)

42

119 (450)

62 (233)

52

7

Product Installation

Standard Equipment

79 USG (300 L) capacity DHW Tank

DHW tank made from high-alloy stainless steel with fitted PUR hard foam thermal insulation.

– 2 thermometers °F / °C

– adjustable levelling bolts

The following is packed separately and attached to the crate:

– installation fittings package: with the necessary brass adaptors, other necessary hardware.

– sensor well with insulation

– temperature and pressure relief valve.

Must be ordered separately:

– 1 brass elbow with sensor well for solar collector return, (see price list, Vitosol accessory).

Vitocell 300-B, EVB Series Technical Data

119 USG (450 L) capacity DHW Tank

DHW tank made from high alloy stainless steel and separately packed soft PET thermal insulation.

– 2 thermometers °F / °C

– adjustable levelling bolts

The following is packed separately and attached to the crate:

– installation fittings package: with the necessary brass adaptors, other necessary hardware.

– sensor well with insulation

– temperature and pressure relief valve.

Must be ordered separately:

– 1 brass elbow with sensor well for solar collector return, (see price list, Vitosol accessory).

Domestic hot water connection

8

Legend

A

Domestic hot water supply

B

DHW recirculation line

C

DHW recirculation pump

D Spring-loaded flow check valve

E Discharge pipe

F

Pressure and temperature relief valve

G

Shut-off valve

H

Drain

K Domestic cold water supply lines

L Backflow preventer

M

Domestic cold water inlet

M

Precharged expansion tank

(required where backflow preventer is installed; check local plumbing codes and requirements)

O Thermostatic mixing valve/anti-scald valve for solar applications (field supplied)

WARNING

Due to the potentially high DHW temperatures generated by the solar heating system, the domestic hot water temperature must be limited to a maximum of 140°F

(60°C) by installing a mixing device, e.g. a thermostatic mixing valve. The mixing device does not completely eliminate the risk of scalding at the tap. The installation of a mixing tap is required.

Vitocell 300-B, EVB Series Technical Data

System Design Guidelines

Installation Example

Product Installation

Legend

A Solar collector

B

Vitocell 300-B

C

Filling valve

D

Solar-Divicon (pumping station)

E Recirculation pump

F Anti-scald tempering valve

HC Heating circuit

B Oil/Gas-fired boiler

DCW Domestic cold water

DHW Domestic hot water

T&P Temperature and pressure relief valve

9

10

Product Installation

System Design Guidelines

(continued)

Vitocell 300-B, EVB Series Technical Data

Sensor well

The supplied stainless steel sensor wells are to be used for control sensors to ensure maximum operational safety. The top sensor well is used for the DHW sensor connected to the boiler control.

Should the supplied sensors not fit into the sensor wells, other stainless steel sensor wells must be used.

For solar heating systems, Viessmann recommends placement of the DHW tank temperature sensor in the solar collector return. This requires a brass elbow with sensor well included in the accessory pack (see page 8).

Storage capacity

a b

WARNING

USG (L) 79 (300)

in. (mm) in. (mm)

8.7 (220)

7.9 (200)

119 (450)

13 (330)

12a (310)

To ensure optimum, safe operation, the supplied stainless steel well must be installed. The well diameter is large enough to accommodate a wide variety of sensing bulbs.

Always use spring clip to ensure proper contact of capillary bulb against the stainless steel well for proper sensing/heat transfer!

Heating water supply temperature over 230ºF (110ºC)

These operating conditions require the installation of an additional safety high limit into the DHW storage tank, preventing the temperature from rising above 203ºF

(95ºC). A domestic hot water tempering valve must be used.

Temperature and pressure relief valve

A 150 psi temperature and pressure relief valve (T&P relief valve) is supplied with the tank. The heating contractor must install the valve on each tank in a method meeting code requirements. If local codes require a different relief valve, substitute the manufacturer’s supplied valve. The tank is approved for 100 psig where a Canadian Registration Number (CRN) is required.

Maximum operating pressure is 150 psig.

The T&P relief valve supplied with the tank is tested under ANSI Z21.22 Code for Relief Valves and Automatic

Gas Shut-off Devices for Hot Water Supply Systems.

Backflow preventers

Where backflow preventers are required, a domestic water expansion tank installation is recommended in the cold water inlet piping before the cold water enters the Vitocell. For the backflow device, observe local plumbing codes and regulations.

T&P Valve

ASME pressure steam rating

CSA temperature steam rating

Relief temperature

Inlet thread

Outlet thread

100 psig (where

CRN is required)

150 psig

see ratings marked on T&P valve

205 MBH

210°F (99°C) c c

” male

” female

205 MBH

210°F (99°C) c c

” male

” female

Recirculation tapping

The recirculation tapping is on a separate tapping (see page 5). Cap this opening if the tank is not installed with recirculation.

Warranty consideration

Viessmann DHW tanks require that the water to be heated must be of drinking (potable) water quality and that any water treatment equipment in use must function correctly.

Viessmann accepts no responsibility for damage howsoever caused and reserves the right to withdraw the product warranty if the product has been improperly installed or misapplied by the installer, contractor or final user. In order to qualify for product warranty, strict adherence to the installation and service manuals must be assured.

In the event that Viessmann non-approved components are utilized, Viessmann reserves the right to withdraw all expressed or implied warranties without written notice.

The water to be heated with the Vitocell must be drinking

(potable) water quality. If the tank is used to heat other media, the warranty will be null and void.

Damage resulting from excessive pressure or temperature is clearly not the responsibility of Viessmann.

The amount of chloride and sulfate acceptable to the tank is limited. In areas where high concentrations of chloride and sulfate are present in drinking water, please consult

Viessmann for directions.

For full warranty details, please read the product warranty sheet.

Vitocell 300-B, EVB Series Technical Data

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Vitocell 300-B, EVB Series Technical Data

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