Viessmann VITOCELL 100-U - Default Chapter; Table of Contents

Index
1. Sizing systems for DHW heating 1.1 Principles ...................................................................................................................... 4
■ General information .................................................................................................. 4
■ Irregular DHW demand ............................................................................................. 4
■ Constant DHW demand ............................................................................................ 4
■ High DHW demand ................................................................................................... 4
■ EDIS calculation program ......................................................................................... 4
■ Hydraulic connection ................................................................................................. 4
2. Product information 2.1 Product description ....................................................................................................... 5
■ Vitocell 100-H (type CHA) ......................................................................................... 5
■ Vitocell 300-H (type EHA) ......................................................................................... 5
■ Vitocell 100-V (type CVA) ......................................................................................... 5
■ Vitocell 100-V (type CVW) ........................................................................................ 5
■ Vitocell 300-V (type EVA) ......................................................................................... 5
■ Vitocell 300-V (type EVI) ........................................................................................... 5
■ Vitocell 100-W (type CUG) ........................................................................................ 6
■ Vitocell 100-L (type CVL) and Vitotrans 222 ............................................................. 6
■ Vitocell 100-B (type CVB)/Vitocell 100-U (type CVUA) ............................................. 6
■ Vitocell 300-B (type EVB) ......................................................................................... 6
■ Vitocell 340-M/360-M (type SVKA/SVSA) ................................................................. 6
■ Vitotrans 353 (freshwater module) ............................................................................ 7
2.2 Overview of product features ........................................................................................ 7
2.3 Intended use of Viessmann cylinders ........................................................................... 7
3. Selecting the cylinder type 3.1 Selection according to N
L
factor ...................................................................................
7
■ Vitocell 100 selection diagram .................................................................................. 9
■ Vitocell 300 selection diagram .................................................................................. 10
■ Selection diagrams, cylinder loading system Vitocell 100-L, type CVL, in conjunction
with Vitotrans 222 ..................................................................................................... 11
3.2 Selection according to continuous output ..................................................................... 11
■ Table for selection according to continuous output ................................................... 12
4. Sizing 4.1 Sizing according to peak draw-off rate and DIN 4708-2 ............................................... 13
■ Calculating the heat demand for DHW heating in residential buildings .................... 13
■ Calculating the applicable draw-off demand per draw-off point to be considered .... 14
■ Calculating the demand factor N ............................................................................... 14
■ Boiler supplement Z
K
................................................................................................
16
■ Calculating the heat demand for DHW heating in commercial enterprises ............... 17
■ Calculating the heat demand for DHW heating in hotels, guest houses and residential
homes ....................................................................................................................... 17
■ Calculating the heat demand for DHW heating in commercial saunas ..................... 18
■ Calculating the heat demand for DHW heating for sports halls ................................ 19
■ Calculating the heat demand for DHW heating in connection with district heating
systems ..................................................................................................................... 19
4.2 Sizing according to peak flow rate with reference to DIN 1988-300 ............................. 20
■ Calculating the DHW demand ................................................................................... 21
■ Calculating the required buffer volume ..................................................................... 21
4.3 Sizing according to continuous output .......................................................................... 22
■ Determining the required DHW cylinder, example 1 (with constant flow tempera-
tures) ......................................................................................................................... 22
■ Determining the required DHW cylinder, example 2 (with a fixed heat source tem-
perature differential) .................................................................................................. 23
5. Cylinder loading systems —
Vitocell 100-L with Vitotrans 222
5.1 Applications and advantages ........................................................................................ 24
5.2 Function description of the cylinder loading system ..................................................... 24
■ Operation with modulating flow temperature ............................................................ 24
■ Operation with constant flow temperature ................................................................ 25
■ Operation with a heat pump in conjunction with a heating lance for DHW heating .. 26
5.3 General formulas for calculating the cylinder loading system ....................................... 27
5.4 Sample calculation ........................................................................................................ 27
■ Calculation of the cylinder size based on water volume ........................................... 28
■ Calculation of the cylinder size based on heat volume ............................................. 28
6. Installation — DHW cylinders 6.1 Connection on the DHW side ....................................................................................... 28
■ Vitocell 100-H and 300-H up to 200 litre capacity ..................................................... 29
■ Vitocell 300-H from 350 litre capacity ....................................................................... 30
■ Vitocell 100-V and 300-V .......................................................................................... 30
■ Connection on the DHW side of cylinder banks with Vitocell 300-H ......................... 31
Index
2
VIESMANN
DHW heating
5414 646 GB