Viessmann Multiple Vitodens Systems Stücklistenhandbuch

Cascade System Guide

for use by Viessmann representatives

5285 280 v1.0 08/2011

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Multiple Vitodens Systems

IMPORTANT

for Vitodens 200-W, WB2B 80/105 Series Boilers

5285 280 v1.0

Cascade System Guide

Purpose of this Document

Table of Contents

The cascade system guide is intended for Viessmann

representatives to provide general information regarding

components, assembly and wiring for various system

configurations using multiple WB2B 80/105 Vitodens

boilers.

This document is to be used for general information

only and maybe subject to change without notice. Some

products may not be exactly as illustrated.

For additional information or other system configurations,

contact the Viessmann commercial projects department.

Cascade System Guide Purpose of this Document............................................2

Wall Mounted Multiple Boilers (without manifold)............3

Multiple Boilers using a Distribution Manifold, LLH..........4

Standard 2 Boiler Distribution Manifold with LLH.......4

Standard 3 Boiler Distribution Manifold with LLH.......5

Standard 2x-2 Boiler Distribution Manifold with LLH...6

Boilers for Cascade System..........................................7

Pumps per Boiler with the Manifold System...................7

Control for Heating System Loop..................................8

Additional Mixing Valves..............................................8

Venting Systems........................................................8

Set-up for Cascade System with External 0-10V

Temperature Signal to the Boiler..............................9

Set-up for Cascade System with Vitocontrol-S...........10

Heating Circuit/Boiler Pumps......................................11

Vitocontrol-S, 1 High/1 Low Temp. Heating Circuit &

1 DHW Tank............................................................12

Coding................................................................12

Wiring.................................................................13

Vitocontrol-S, 1 High/2 Low Temp. Heating Circuit &

1 DHW Tank............................................................14

Coding................................................................14

Wiring.................................................................15

Vitocontrol-S, 1 High/3 Low Temp. Heating Circuit &

1 DHW Tank............................................................16

Coding................................................................16

Wiring.................................................................17

Vitocontrol-S, 1 High/1 Low Temp. Heating Circuit,

1 DHW Tank & External Snow Melt............................18

Coding................................................................18

Wiring.................................................................19

IMPORTANT

All distribution manifold inline installations can not be free

standing and must be securely fastened to the floor and

the wall.

Wall mount or wall and floor installations must be capable

of supporting the weight of the boilers, distribution

manifold(s) and insulation.

Page

5285 280 v1.0

Cascade System Guide

Wall Mounted Multiple Boilers (without manifold)

Using standard Viessmann components, a maximum of 4 same size boilers can be connected in a cascade system using

a LL distribution manifold or field piped system (as shown below).

For systems requiring more than 4 boilers a custom Viessmann control is required.

For systems that do not use the LLDM (field piped

systems) the contractor must size the pump according to

the pressure drop of the piping and the pressure drop of

the boiler heat exchanger.

For a list of recommended heating circuit/boiler pumps

refer to page 11.

A low loss header must be installed between the primary

boiler circuit and secondary system circuit. The LLH must

be sized to accommodate the highest flow rate.

All supply and return pipes are field supplied.

Control options for cascade system not using LLDM.

Vitocontrol-S WB2B cascade control.

For systems up to 4 boilers of the same size, using KMK

bus communication between the Vitotronic HC1 boiler

control and the Vitocontrol-S WB2B cascade control.

BMS or third party cascading controller

For systems up to 4 boilers of the same size, using

0-10VDC temperature signal between the Vitotronic 200

HO1 and the third party controller.

System type Wall mounted

WB2B 80 WB2B916

WB2B 105 WB2B917

System type Wall mounted

WB2B 80 WB2B912

WB2B 105 WB2B913

5285 280 v1.0

Cascade System Guide

Multiple Boilers using a Standard Distribution Manifold and LLH

The following illustrations will show a 2, 3 and 4 multiple boiler configurations using standard 2 or 3 boiler distribution

manifolds. All low loss distribution manifold packages include a LLH.

Standard 2 Boiler Distribution Manifold with Low Loss Header (dimensions in. [mm])

(front view shown)

Part No. Z008 013 includes a 2 boiler distribution manifold, a low loss header and the necessary mounting hardware.

Part No. 7424 333 for manifold insulation (order separately if required, not shown).

Part No. 7424 336 for LLH insulation (order separately if required, not shown).

5285 280 v1.0

Cascade System Guide

Multiple Boilers using a Standard Distribution Manifold and LLH (continued)

Standard 3 Boiler Distribution Manifold with Low Loss Header (dimensions in. [mm])

(front view shown)

Part No. Z008 014 includes a 3 boiler distribution manifold, a low loss header and the necessary mounting hardware.

Part No. 7424 334 for 3 boiler manifold insulation (order separately if required, not shown).

Part No. 7424 337 for LLH insulation (order separately if required, not shown).

5285 280 v1.0

Cascade System Guide

Multiple Boilers using a Standard Distribution Manifold and LLH (continued)

Standard 2x - 2 Boiler Distribution Manifolds with Low Loss Header (dimensions in. [mm])

(front view shown)

Part No. Z008 015 includes 2x - 2 boiler distribution manifolds, a low loss header and the necessary mounting hardware.

Part No. 2x - 7424 333 for 2 boiler manifold insulation (order separately if required, not shown).

Part No. 7424 338 for LLH insulation (order separately if required, not shown).

5285 280 v1.0

Cascade System Guide

Boilers for Cascade System

Pumps per Boiler with the Manifold System

Control options for cascade system when using LLDM.

Vitocontrol-S WB2B cascade control.

For systems up to 4 boilers of the same size, using KMK

bus communication between the Vitotronic HC1 boiler

control and the Vitocontrol-S WB2B cascade control.

BMS or third party cascading controller

For systems up to 4 boilers of the same size, using

0-10VDC temperature signal between the Vitotronic 200

HO1 and the third party controller.

The packages listed above include the following

components;

- WB2B Boiler

- Vitotronic boiler control

- Power pump module

- 30 psig relief valve

- Pressure gauge

- Gas shut-off valve

- (2) fill/drain valves

- Mounting hardware

Optional components:

- 45 psig relief valve (PN 9549944)

- 60 psig relief valve (PN 9560183)

System type With manifold

WB2B 80 WB2B918

WB2B 105 WB2B919

System type With manifold

WB2B 80 WB2B914

WB2B 105 WB2B915

One circulation pump per boiler is required:

- UPS 26-99 FC 7248585 for a max of 24 gpm

- UPS 26-150 F 7441596 for a max of 28 gpm

Boiler model 200-W, WB2B 80 105

rt for NG/LPG Output Btu/h 260 000 350 000

25º F rise (GPM) 20.8 28.0

30º F rise (GPM) 17.3 23.3

35º F rise (GPM) 14.9 20.0

40º F rise (GPM) 13.0 17.5

5285 280 v1.0

Cascade System Guide

Control for Heating System Loop

Additional Mixing Valves

Vitocontrol-S, is capable of controlling (1) high

temperature circuit and (2) low temperature circuits with

mixing valves.

Refer to the price book 1 and 2 for available 3 and 4 way

mixing valve sizes and corresponding part numbers.

BMS tie-ins to the Vitocontrol-S will require additional

integration equipment, the following integration equipment

is available from Viessmann;

0-10VDC Extension input module

Versatronik 505 BACIP Gateway

Versatronik 505 LONIP Gateway

External mixing valve controllers are required when

controlling 3 or more mixing valve circuits, use one

Vitotronic 200 HK1M (PN 7134627) in conjunction with

the Vitocontrol-S for each additional mixing valve circuit

in the system.

Additional equipment required when installing a Vitotronic

200 HK1M are as follows;

- (1) LON Connection cable 23 ft. (7 m) (7143495)

- (1) LON Terminal end resistors 92 pieces ( 7143497)

- (1) LON Communication modules for HK1M (7172173)

- (1) LON Communication modules for WB2B (7179113)

Venting Systems

Each boiler must be vented separately using one of the

following certified venting systems:

- Coaxial PP(s)

- Stainless steel

- CPVC Vent

- Flexible PP(s)

- PP(s) rigid venting

Refer to the Venting Installation Instructions

for more detail.

5285 280 v1.0

Cascade System Guide

Set-up for Cascade System with External 0-10V Temperature Signal to the Boiler

Preparing the single boiler connections to the pump power module and coding addresses that needs to be changed.

Coding changes for the Vitotronic 200, HO1 boiler:

- No coding changes are required, boiler control is capable

of automatic recognition, if the BMS system fails to

recognize the Vitotronic 100 HO1, please refer to the

Vitodens 200 WB2B Start-up/Service Manual.

5285 280 v1.0

Cascade System Guide

Set-up for Cascade System with Vitocontrol-S

Preparing the single boiler connections to the pump power module and the coding addresses that needs to be changed.

Require coding changes for the Vitotronic 100 HC1 boiler

control (changes to be made in Coding 2):

- coding address 01:1 changed to 01: 2

(multiple boiler systems)

- coding address 07: changed to 07:_(for each boiler #

in the cascade system)

- coding address 76:0 changed to 76:2

(with cascade communication module)

- coding address 77: changed to 77:_(for each boiler #

in the cascade system)

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