Viessmann Vitocell 300-H Technical Manual
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Viessmann Vitocell 300-H Technical Manual

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See also: Instruction and Installation Manual , Technical Data Manual
VIESMANN
Technical guide
DHW heating
Central DHW heating
with Viessmann DHW cylinders
■
with Viessmann cylinder loading system
■
with Viessmann freshwater module
■
5414646 GB
5/2018
DHW heating
DHW cylinders and
cylinder loading systems

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  • Page 1 VIESMANN DHW heating DHW cylinders and cylinder loading systems Technical guide DHW heating Central DHW heating with Viessmann DHW cylinders ■ with Viessmann cylinder loading system ■ with Viessmann freshwater module ■ 5414646 GB 5/2018...

  • Page 2: Table Of Contents

    ■ Hydraulic connection ....................Product information 2.1 Product description ....................... ■ Vitocell 100-H, type CHA ..................■ Vitocell 300-H, type EHA ..................■ Vitocell 100-V, types CVA, CVAA, CVAA-A .............. ■ Vitocell 100-V, type CVWA ..................■ Vitocell 300-V, type EVIA-A, EVIA-A+ ..............
  • Page 3 ■ Vitocell 300-H, from 350 l capacity ................■ Vitocell 100-V and Vitocell 300-V ................35 ■ Connection on the DHW side of cylinder banks with Vitocell 300-H ......6.2 DHW circulation pipes ....................6.3 Connection of the DHW circulation pipe with cylinder banks ........38 ■...

  • Page 4: Sizing Systems For Dhw Heating 1.1 Basics

    EDIS calculation program For reliable sizing of DHW systems, Viessmann provides free EDIS software. This can be used for calculations for both residential build- ings (to DIN 4708-2) and non-residential buildings (e.g. hotels, army barracks, industrial enterprises).

  • Page 5: Product Information 2.1 Product Description

    160, 200, 350 and 500 l capacity, horizontal, made from stainless Cylinder banks steel, internal indirect coil Vitocell 300-H, 350 and 500 l capacity can be combined with on-site Horizontal DHW cylinder made from stainless steel with internal indi- manifolds for the heating water and DHW sides to form cylinder rect coil.

  • Page 6: Vitocell 100-W, Types Cuga, Cuga-A

    Product information (cont.) Vitocell 100-W, types CUGA, CUGA-A 120 and 150 l capacity, vertical, enamelled, internal indirect coil Vitocell 100-W, type CUGA-A: Vertical DHW cylinder with internal indirect coil especially for installa- ■ Vacuum-insulated panel in cylinder jacket for ErP energy efficiency tion below a wall mounted oil or gas boiler.

  • Page 7: Vitotrans 353 (Freshwater Module)

    > 300 l are supplied with separate thermal insulation. to achieve ErP energy efficiency class A or A+ respectively. 2.3 Intended use of Viessmann cylinders The appliance is only intended to be installed and operated in sealed Any usage beyond this must be approved by the manufacturer for unvented systems that comply with EN 12828 / DIN 1988, or solar the individual case.

  • Page 8: Selecting The Cylinder Type

    Selecting the cylinder type 3.1 Selection according to N factor General information The detailed specification and performance parameters for the DHW cylinder can be found in the datasheets. The following tables help with initial selection. DHW cylinder selection The calculated demand factor N (see from page 13) is used to Example: select the DHW cylinder performance factor N ≥...
  • Page 9 Selecting the cylinder type (cont.) Vitocell 100-H Vitocell 100-V Vitocell 100-B Vitocell 100-U 130 to 200 l 160 to 500 l 300 to 950 l 300 l Upper indirect coil Upper indirect coil 70 °C 80 °C 90 °C 70 °C 80 °C 90 °C 70 °C...
  • Page 10 Selecting the cylinder type (cont.) Vitocell 100 selection diagram - Part 2 Vitocell 100-H Vitocell 100-V Vitocell 100-B Vitocell 100-U 750 to 950 l 70 °C 80 °C 90 °C 70 °C 80 °C 90 °C 70 °C 80 °C 90 °C 70 °C 80 °C...
  • Page 11 Selecting the cylinder type (cont.) Vitocell 300 selection diagram Vitocell 300-H Vitocell 300-V Vitocell 300-B 160 to 500 l 160 to 500 l 300 and 500 l Upper indirect coil 70 °C 80 °C 90 °C 70 °C 80 °C 90 °C...

  • Page 12: Selection Diagrams, Cylinder Loading System Vitocell 100-L, Type Cvla, With Vitotrans 222

    Selecting the cylinder type (cont.) Selection diagrams, cylinder loading system Vitocell 100-L, type CVLA, with Vitotrans 222 Performance factor N Peak output (over 10 minutes) 3000 2500 2850 (3 x 950) l 1900 (2 x 950) l 2000 1500 (2 x 750) l 2850 (3 x 950) l 1500 950 l...

  • Page 13: Selection According To Continuous Output

    60 °C 50 °C Horizontal DHW cylinders Vitocell 100-H 130 l — 160 l — 200 l — Vitocell 300-H 160 l — 200 l — 350 l — 500 l — DHW cylinders for wall mounted boilers Vitocell 100-W...

  • Page 14: Sizing

    This may homes, campsites, sports halls. occur, e.g. in commercial enterprises or schools (intermittent opera- You can obtain the Viessmann "EDIS" calculation program by con- tion). The 10-minute peak output is determined almost exclusively by tacting one of our sales offices.

  • Page 15: Calculating The Applicable Draw-Off Demand Per Draw-Off Point To Be Considered

    Sizing (cont.) Table 3 – Residential unit with deluxe equipment level Existing amenities per residential unit To be taken into account for calculating the demand Room Equipment Bathroom As existing, according to table 4, no. 2 to 4 Bath As existing, incl. any additional facilities according to table 4, no. 6 or 7, if arranged Shower cubicle to permit simultaneous use Not taken into account...
  • Page 16 Sizing (cont.) Σ(n · p · v · w The demand factor N is identical to the number of standard residen- 3.5 · 5820 tial units in the building project. It does not necessarily correspond to the actual number of residen- Σ(n ·...

  • Page 17: Boiler Supplement Z K

    = 35) as cylinder bank com- der storage temperature of 60 °C. Select a DHW cylinder with an N prising 2 x Vitocell 300-H, each with 350 l capacity factor at least equal to N. ■ From the Vitocell 300-V datasheet: Vitocell 300-V with 600 l capacity (N = 34.8) as cylinder bank...

  • Page 18: Calculating The Heat Demand For Dhw Heating In Commercial Enterprises

    Sizing (cont.) Calculating the heat demand for DHW heating in commercial enterprises 1. Demand calculation Using table 8, we arrive at the following DHW volume required: Allow for a suitable number of washing facilities (washing/shower a) DHW demand of the washing facilities: 120 × 3.5 l/min × 3.5 min units) for the type of business concerned (see the earlier DIN 18228, = 1470 l part 3, page 4).

  • Page 19: Calculating The Heat Demand For Dhw Heating In Commercial Saunas

    Selected DHW cylinders: Hotel category Standard Good High 3 × Vitocell 300-H, each with 500 l capacity ϕ 3 × Vitocell 300-V, each with 500 l capacity = Heat-up time in h The heat-up time is subject to the rated heating output Calculating the required heat-up output available for DHW heating.

  • Page 20: Calculating The Heat Demand For Dhw Heating For Sports Halls

    4 min Heat-up time Z 50 min Selected DHW cylinders: 2 x Vitocell 300-H, each with 350 l, People per heat-up time and training peak output at 70 °C heating water flow temperature = 989 l at 40 °C unit n: Min.
  • Page 21 Sizing (cont.) 2. Calculating the required heat-up output for the calculated cyl- Size the boiler and circulation pump for cylinder heating according to inder capacity: the required heat-up output. To guarantee adequate heating of the building during winter too, add V ·...

  • Page 22: Sizing According To Peak Flow Rate With Reference To Din 1988-300

    Sizing (cont.) 4.2 Sizing according to peak flow rate with reference to DIN 1988-300 Application For DHW heating systems operating according to the instantaneous However, to avoid oversizing, the calculated peak flow rate must not water heater principle, e.g. freshwater modules, the DHW demand be higher than the sum of the two largest individual consumers that can be determined according to the peak flow rate principle.

  • Page 23: Calculating The Required Buffer Volume

    Sizing (cont.) Table 13 - Excerpt from "Vitotrans 353", type PBMA/PZMA datasheet Heating wa- Set DHW Max. draw- Transfer Required At 10 °C cold water inlet temperature: Return tem- ter tempera- tempera- off rate output heating Max. draw-off rate at the mixing valve at perature to ture in the ture...

  • Page 24: Sizing According To Continuous Output

    Sizing (cont.) 4.3 Sizing according to continuous output Application Sizing according to continuous output is employed if hot water is to be continuously drawn from the DHW cylinder. This sizing method is therefore mainly used for commercial applications. Determining the required DHW cylinder, example 1 (with constant flow temperatures) Requirements: Where several cylinders are connected in parallel, the total pressure ■...
  • Page 25 Sizing (cont.) Conversion of continuous output from l/h to kW = Continuous output in kW or Φ ² req. req. = Continuous output in l/h µ = Spec. thermal capacity 1 kWh 860 l · K ΔT = Temperature differential between DHW outlet temperature and cold water inlet temperature in = µ...
  • Page 26 Sizing (cont.) Calculating the required flow rate on the heating water side = Flow rate on the heating water side in l/h µ or Φ = Required continuous output in kW ² req. req. ΔT = Heating water temperature differential in K = Spec.

  • Page 27: Cylinder Loading Systems - 5.1 Applications And Advantages

    Cylinder loading systems — Vitocell 100-L with Vitotrans 222 5.1 Applications and advantages The Viessmann cylinder loading system is a combination of a ■ Short-term peak loads, i.e. high draw-off rates and varying reheat Vitocell 100-L DHW cylinder and a modular Vitotrans 222 heat times, e.g.

  • Page 28: Function Description Of The Cylinder Loading System

    DHW temperature. A set DHW temperature of max. 60 °C prevents scaling of the plate heat exchanger. Pasteurisation is feasible in conjunction with Viessmann boilers with the Vitotronic boiler control units or with the Vitotronic 200-H heating circuit control units (accessories).

  • Page 29: Operation With A Heat Pump In Conjunction With A Heating Lance For Dhw Heating

    Cylinder loading systems — Vitocell 100-L with Vitotrans 222 (cont.) During draw-off and once draw-off has ended, the cylinder volume is Provided the above set heating water and DHW temperatures are reheated to the set temperature via the Vitotrans 222. In the fully observed, the Vitotrans 222 heat exchanger set can be operated up to a total water hardness of 20 °dH (total of alkaline earths heated state (no draw-off), cylinder loading pump N and heating...
  • Page 30 Cylinder loading systems — Vitocell 100-L with Vitotrans 222 (cont.) A DHW H Heat pump B Hot water inlet from the heat exchanger K Line regulating valve C Heating lance L Non-return valve D Plate heat exchanger M Cylinder loading pump E Air vent valve N Shared cold water connection with safety assembly to DIN 1988 F Heating water flow from the heat pump...

  • Page 31: General Formulas For Calculating The Cylinder Loading System

    Cylinder loading systems — Vitocell 100-L with Vitotrans 222 (cont.) 5.3 General formulas for calculating the cylinder loading system Calculation based on water volume L · t With reference to EN 12831, Q = Φ is used for heat volume and in l c ·...

  • Page 32: Sample Calculation

    Cylinder loading systems — Vitocell 100-L with Vitotrans 222 (cont.) 5.4 Sample calculation A sports centre is equipped with 16 showers which are limited to Φ = Total heat demand in kWh (for production and demand) 15 l/min. Φ = Usable heat volume of the total cylinder volume in kWh According to design requirements, 8 showers are operated simulta- Φ...

  • Page 33: Installation - Dhw Cylinders 6.1 Connection On The Dhw Side

    Permissible operating pressure: 10 bar (1 MPa). The connection diameter of the safety valve must be as follows: Only for cylinder banks Vitocell 300-H: ■ Up to 200 l capacity With DHW outlet temperatures in excess of 60 °C, the connection min.

  • Page 34: Vitocell 100-H And Vitocell 300-H Up To 200 L Capacity

    Installation — DHW cylinders (cont.) Vitocell 100-H and Vitocell 300-H up to 200 l capacity G H KLM Connection on the DHW side to DIN 1988 A DHW K Pressure gauge connection B DHW circulation pipe L Non-return valve C DHW circulation pump...

  • Page 35: Vitocell 100-V And Vitocell 300-V

    Installation — DHW cylinders (cont.) R Non-return valve/pipe separator S Diaphragm expansion vessel, suitable for potable water Vitocell 100-V and Vitocell 300-V H K LM Connection on the DHW side in accordance with DIN 1988 A DHW K Pressure gauge connection B DHW circulation pipe L Non-return valve C DHW circulation pump...

  • Page 36: Connection On The Dhw Side Of Cylinder Banks With Vitocell 300-H

    Installation — DHW cylinders (cont.) Connection on the DHW side of cylinder banks with Vitocell 300-H Note ■ Observe stacking height: Vitocell 300-H, 350 l: Max. 2 pce Vitocell 300-H, 500 l: Max. 3 pce ■ Observe the cross-sections of DHW connecting pipes.

  • Page 37: Dhw Circulation Pipes

    Installation — DHW cylinders (cont.) 6.2 DHW circulation pipes For reasons of hygiene and convenience, DHW circulation pipes are Connecting to the cold water inlet is also an option for DHW cylin- installed in DHW heating systems. Observe the applicable standards ders where, due to the ratio of the draw-off rate and/or the flow rate and rules.

  • Page 38: Connection Of The Dhw Circulation Pipe With Cylinder Banks

    Installation — DHW cylinders (cont.) 6.3 Connection of the DHW circulation pipe with cylinder banks General information ■ Connect the DHW circulation pipe with detachable fittings. ■ Install the cylinder banks with DHW circulation according to the diagrams below to ensure that each individual cylinder is heated evenly.

  • Page 39: Installing The Vitocell 100-V And Vitocell 300-V As A Cylinder Bank

    Installation — DHW cylinders (cont.) Installing the Vitocell 100-V and Vitocell 300-V as a cylinder bank Connection in conjunction with condensing boilers or district heating systems without return temperature limit and systems with branched DHW circulation networks A Draw-off points D DHW circulation pump B DHW circulation pipe E Check valve...

  • Page 40: Connection On The Heating Side

    D Heating water flow C Heating water return D Heating water flow E Circulation pump E Circulation pump F Spring-loaded check valve F Spring-loaded check valve G Vitocell 100-H or Vitocell 300-H G Vitocell 100-H or Vitocell 300-H VIESMANN DHW heating...
  • Page 41 Installation — DHW cylinders (cont.) Vitocell 300-H as cylinder bank Note Observe the cross-sections of connection pipes on the heating water side. 700 and 1000 l (2 cylinders) 2 x 700 l and 2 x 1000 l (2 x 2 cylinders)

  • Page 42: Connection On The Heating Side With Return Temperature Limit

    Installation — DHW cylinders (cont.) Vitocell 100-V and Vitocell 300-V Control by starting/stopping the circulation pump Control via a control valve A Air vent valve B Heating water flow B Heating water flow C Vitocell 100-V or Vitocell 300-V C Vitocell 100-V or Vitocell 300-V G Heating water return D Spring-loaded check valve H Sensor for water temperature controller...
  • Page 43 Installation — DHW cylinders (cont.) A Water temperature controller F Sensor for the return temperature limiter B Gland fitting G Internal indirect coil C Tee H Heating water return D Fitting K Sensor for return temperature limiter E Thermal insulation L Sensor for water temperature controller M Heating water flow Vitocell 100-V and Vitocell 300-V as a cylinder bank...

  • Page 44: Installation - Cylinder Loading System

    Installation — cylinder loading system 7.1 DHW connection Version 1 — cylinder loading system with one Vitocell 100-L and Vitotrans 222 for modulating flow tem- peratures A Draw-off points (DHW) G Heating water return B DHW circulation pump H Shared cold water connection with safety assembly to DIN 1988 C Vitotrans 222 heat exchanger set with mixer assembly K Vitocell 100-L, (here: 500 l capacity) D Vitotronic 200-H, type HK1B, HK3B...

  • Page 45: Version 2 - Cylinder Loading System With Several Vitocell 100-L In Parallel And Vitotrans 222 For Modulating Flow Temperatures

    Installation — cylinder loading system (cont.) Version 2 — cylinder loading system with several Vitocell 100-L in parallel and Vitotrans 222 for modulat- ing flow temperatures A Vitocell 100-L, (here: 500 l capacity) G Plate heat exchanger B DHW circulation pipe H Heating water flow C DHW circulation pump K Heating water return...

  • Page 46: Version 3 - Cylinder Loading System With Several Vitocell 100-L In Parallel And Vitotrans 222 For Constant Flow Temperatures

    Installation — cylinder loading system (cont.) Version 3 — cylinder loading system with several Vitocell 100-L in parallel and Vitotrans 222 for constant flow temperatures A Vitocell 100-L, (here: 500 l capacity) H Heating water return B DHW circulation pipe K Cylinder loading pump (secondary), highly efficient C DHW circulation pump L Plate heat exchanger...

  • Page 47: Version 4 - Cylinder Loading System With Several Vitocell 100-L Connected In Series And Vitotrans 222 For Modulating Flow Temperatures

    Installation — cylinder loading system (cont.) Version 4 — cylinder loading system with several Vitocell 100-L connected in series and Vitotrans 222 for modulating flow temperatures 21 17 B A Vitocell 100-L, (here: 500 l capacity) G Plate heat exchanger B DHW circulation pipe H Heating water flow C DHW circulation pump...

  • Page 48: Connections

    Installation — cylinder loading system (cont.) 7.2 Connections Connection on the DHW side of the Vitotrans 222 (accessories) in conjunction with a Vitocell 100-L (Connection to DIN 1988) A Draw-off points (DHW) K Pressure gauge connection B DHW circulation pipe L Non-return valve C DHW circulation pump M Drain...

  • Page 49: Connections On The Heating Water Side

    Installation — cylinder loading system (cont.) Pressure gauge Drinking water filter Provide a connection for a pressure gauge. Install a drinking water filter in accordance with DIN 1988. The instal- lation of a drinking water filter prevents dirt from being introduced Flow regulating valve into the drinking water system.

  • Page 50: Appendix

    Appendix 8.1 Questionnaire regarding the sizing of DHW cylinders DHW cylinders in DHW heating systems 1. Address 2. Essential details Name Required cylinder temper- °C ature Street Flow temperature of the °C heat source Postcode / Town Spread (Δt) = Optimised Telephone (for any queries) Date...
  • Page 51 Appendix (cont.) = Retirement home, nursing home Number of beds DHW demand (45 °C) l/bed Number of covers DHW demand (45 °C) l/cover Number of additional draw-off Demand period Hours points Number of draw-off points per room = Campsite, recreational camp Number of campers Shower frequency Number of users/hour and shower...

  • Page 52: Checklist For Heat Exchanger Enquiries/Sizing

    Appendix (cont.) 8.2 Checklist for heat exchanger enquiries/sizing Intended use: Water/water = System separation, underfloor heating system = System separation, district heating system = DHW heating = Other: System temperatures Primary Secondary Inlet °C Inlet °C Outlet °C Outlet °C Output Limits (e.g.

  • Page 53: Checklist For Heat Exchanger Enquiries/Sizing

    °C Outlet °C Output Limits (e.g. max.) Pressure drop Primary mbar Secondary mbar Limits Pressure stages Limits Temperatures °C Special conditions? Specification of heat exchanger type Tubular heat exchanger = Vertical = Horizontal (Viessmann only supplies vertical version) VIESMANN DHW heating...

  • Page 54: Keyword Index

    Keyword index Boiler supplement Zk............... 17 Return temperature limit..............42 Calculation of the cylinder loading system........31 Safety valve..................33 Checklist for heat exchanger enquiries/sizing........52 Selection diagrams, DHW cylinder..........8, 11 Circulation pump for cylinder heating, sizing........24 Selection of DHW cylinder Cylinder loading system, calculation..........31 –...
  • Page 55 VIESMANN DHW heating...
  • Page 56 Subject to technical modifications. Viessmann Werke GmbH & Co. KG Viessmann Limited D-35107 Allendorf Hortonwood 30, Telford Telephone: +49 6452 70-0 Shropshire, TF1 7YP, GB Fax: +49 6452 70-2780 Telephone: +44 1952 675000 www.viessmann.com Fax: +44 1952 675040 E-mail: info-uk@viessmann.com...

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