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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.
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