Danfoss FLS-50 Operating guide
Installation, start-up
and operating instructions
Domestic Water Heater FLS-50
Always keep the operating manual near the device.
Read the operating manual before commencing work.
Notice! Before starting the device, make sure that it is not damaged and that it is in perfect working order.
DKDHR |
VI.GE.T1.02 © Danfoss 12/2010 |
1 |
Installation, start-up and operating instructions FLS-50
1 General................................................................................................................................................ |
4 |
1.1 Information about the operating manual............................................................................................................. |
4 |
1.2 Supporting documents............................................................................................................................................... |
4 |
1.3 Explanations of the symbols...................................................................................................................................... |
4 |
1.4 Warranty and liability.................................................................................................................................................... |
5 |
1.5 Copyright.......................................................................................................................................................................... |
5 |
1.6 Spare parts........................................................................................................................................................................ |
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1.7 Dismantling...................................................................................................................................................................... |
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1.8 Disposal............................................................................................................................................................................. |
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2 Safety.................................................................................................................................................. |
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2.1 General............................................................................................................................................................................... |
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2.2 Responsibility of the operator.................................................................................................................................. |
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2.3 Intended use.................................................................................................................................................................... |
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2.4 Possible misuse............................................................................................................................................................... |
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2.5 Occupational safety...................................................................................................................................................... |
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2.6 Personal protective equipment................................................................................................................................ |
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2.7 Potential hazards involving the device.................................................................................................................. |
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2.8 Emergency stop switch............................................................................................................................................... |
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2.9 Operating personnel.................................................................................................................................................... |
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2.10 What to do in case of danger or accidents......................................................................................................... |
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2.11 Residual hazards/risk analysis............................................................................................................................... |
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3 Technical data.................................................................................................................................. |
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3.1 Technical and main system data............................................................................................................................. |
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3.1.1 Circuit diagram...................................................................................................................................................... |
11 |
3.1.2. Bill of materials..................................................................................................................................................... |
11 |
3.1.3 Type plate............................................................................................................................................................... |
12 |
3.1.4 Pressure loss curve ............................................................................................................................................. |
12 |
3.1.5 Capacity examples.............................................................................................................................................. |
12 |
3.1.6 FLS-50 + options.................................................................................................................................................. |
12 |
3.1.7. Dimensions and photo of components...................................................................................................... |
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4 Function............................................................................................................................................ |
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4.1 Function / General...................................................................................................................................................... |
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5 Setup................................................................................................................................................. |
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5.1 Assembly and installation/general....................................................................................................................... |
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5.1.1 Figure FLS-50......................................................................................................................................................... |
15 |
6 Transport, packing and storage..................................................................................................... |
16 |
6.1 Transport pallets with a fork lift truck.................................................................................................................. |
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6.2 Transport inspection................................................................................................................................................. |
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6.3 Packaging...................................................................................................................................................................... |
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6.4 Storage............................................................................................................................................................................ |
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7 Installation....................................................................................................................................... |
18 |
7.1 Assembly preparations................................................................................................................. |
18 |
7.1.1 Electrical connection.......................................................................................................................................... |
18 |
7.1.2 Assembly of FLS-50............................................................................................................................................. |
21 |
7.1.2.1 Assembling the basic device................................................................................................................... |
22 |
7.1.2.2 Assembling Option 1................................................................................................................................. |
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7.1.2.3 Assembling Option 2................................................................................................................................. |
23 |
7.1.2.4 Assembling Option 3.................................................................................................................................. |
25 |
7.1.2.5 Assembling Option 4................................................................................................................................. |
26 |
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Installation, start-up and operating instructions FLS-50
8 Start-up............................................................................................................................................. |
27 |
8.1 Controller....................................................................................................................................................................... |
27 |
8.2 Fault and shutdown................................................................................................................................................... |
28 |
8.3 Restarting after a fault.............................................................................................................................................. |
28 |
9 Operation.......................................................................................................................................... |
28 |
9.1 Switching the device on............................................................................................................................................ |
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9.2 Switching the device off........................................................................................................................................... |
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10 Maintenance................................................................................................................................... |
29 |
10.1 Safety information.................................................................................................................................................... |
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10.2 Maintenance work.................................................................................................................................................... |
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10.3 Measures after maintenance work..................................................................................................................... |
30 |
11 Faults............................................................................................................................................... |
31 |
11.1 Functional faults........................................................................................................................................................ |
31 |
11.2 Safety information.................................................................................................................................................... |
32 |
11.3 What to do in case of faults................................................................................................................................... |
32 |
12 Spare parts...................................................................................................................................... |
32 |
11.3 What to do in case of faults................................................................................................................................... |
32 |
13 Appendix I....................................................................................................................................... |
33 |
13.1 Exchanger calculations........................................................................................................................................... |
34 |
13.2 Pressure loss curve, Primary pump.................................................................................................................... |
39 |
13.3 Temperature sensor................................................................................................................................................. |
40 |
13.4 Temperature/flow meter........................................................................................................................................ |
44 |
13.5 Pressure loss curve, Circulation pump.............................................................................................................. |
45 |
14 Appendix II..................................................................................................................................... |
46 |
14.1 Declaration of Conformity..................................................................................................................................... |
47 |
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Installation, start-up and operating instructions FLS-50
1 General |
1.1 Information about the operating manual |
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This operating manual describes installation, |
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operation and maintenance of the system. |
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Compliance with the safety and handling |
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instructions is a requirement for working safely |
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and using the system properly. |
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Apart from this, the local accident prevention |
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regulations and general safety regulations |
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applicable where the system is used must also be |
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observed. |
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The operating manual is a part of the product |
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and should be kept accessible near where the |
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system is operated at all times for installation, |
operation, maintenance and cleaning personnel. The graphics in this manual, which are intended to provide a better description of the facts, are not necessarily to scale and may deviate slightly from the actual system design.
Apart from this operating manual, the operating instructions for the installed components should also be observed. The information contained in these – especially in relation to safety – must be complied with.
1.2 Supporting documents
If not stated otherwise, the individual system components are purchased modules from other manufacturers. All the components used in the system have been subject to risk assessments by their manufacturers. The component manufacturers have declared that the design of the components complies with applicable European and national regulations.
The manufacturers' conformity declarations and the operating, maintenance and repair
instructions for the individual components are inseparable elements of the system documentation. All the instructions on safety, assembly and installation, operation, maintenance, dismantling and disposal of the components contained in the manufacturers' documentation must be followed by operating personnel.
1.3 Explanations of the symbols
Important safety and technical information in this operating manual is marked with warning signs. The information must be observed to prevent accidents, injury and damage to property.
WARNING!
This symbol indicates hazards that could affect health or cause injuries, permanent bodily harm or death.
Observe the instructions on occupational safety closely and be especially careful in such cases.
WARNING!
Risk of injury from electrical current.
This symbol draws your attention to dangerous situations involving electrical current. If the safety instructions are not complied with, there is a risk of serious injury or death. Work must be carried out only by a qualified electrician.
NOTICE!
This symbol indicates instructions which, if not followed, may result in damage,
malfunctions and/or failure of the system.
NOTE!
This symbol highlights hints that should be observed to ensure efficient, problem-free operation of the system.
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Installation, start-up and operating instructions FLS-50
1.4 Warranty and liability
All data and information in this operating manual were compiled with consideration of applicable regulations, the current technical/ engineering development status and our many years of knowledge and experience.
The actual scope of delivery may differ from the explanations and drawings shown here in case of special designs, if additional options are ordered or due to recent technical modifications. If you have any questions, please contact the manufacturer.
This operating manual should be read carefully before any work is done to and
with the device, especially before it is used for the first time. The manufacturer accepts no liability for damage or faults that result from non-compliance with the operating manual .
We may make technical modifications within the scope of improving performance characteristics and in the course of further development.
The warranty does not cover components, such as tools, that are subject to normal wear when the device is used as intended or consumables such as grease, oil or cleaning agents.
In all other respects, the obligations agreed in the delivery contract shall apply in addition to the manufacturer's general terms and conditions of business and terms and conditions of delivery and the statutory regulations applicable at the time the contract was concluded.
1.5 Copyright
The operating manual should be treated as confidential. It is intended only for people involved with the system. The operating manual may not be handed over to a third person without the written consent of the manufacturer. If you have any questions, please contact the manufacturer.
The information, texts, drawings, pictures and other presentations are protected by
copyright and are subject to other industrial property rights. Misuse of the above is indictable.
The content, including excerpts, may not be copied in any way whatsoever, nor may it be utilised or disclosed without the written consent of the manufacturer. Compensation shall be due in case of infringements of the above. We reserve the right to assert further claims.
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Installation, start-up and operating instructions FLS-50
1.6 Spare parts
Use only the manufacturer's original spare parts.
Wrong or faulty spare parts may cause damage, malfunctions or complete failure of the system.
If unapproved spare parts are used, this voids all warranty, service, compensation and liability claims against the manufacturer, its agents, dealers and representatives.
1.7 Dismantling
To dispose of the device separately, clean it and dismantle it with consideration of applicable occupational safety and environmental protection regulations. See also: Hygiene.
WARNING! Risk of injury.
Stored residual energies, sharp-edged components, sharp points and edges on and in the device or on the required tools
may cause injury. Therefore, all work to dismantle the device must be carried out only by qualified personnel.
WARNING! Not drinking water! Domestic water in system parts that have not been used for a long period may not
have drinking water quality. Please prevent use, empty the system parts and dispose of the water .
Before starting to dismantle the device:
–Switch the device off and make sure that it cannot be switched on again.
–Physically isolate the complete power supply from the device, discharge stored residual energy properly.
–Remove operating and auxiliary materials and residual processing materials in an environmentally friendly manner.
1.8 Disposal
If no return or disposal agreement has been made, when components have been properly dismantled dispose of the materials as follows:
•Scrap residual metal materials.
•Have plastic elements recycled.
•Sort and dispose of the other components according to their properties.
•Dispose of residual media properly. Observe the statutory regulations when discharging additives (glycol, etc.).
NOTICE!
Electric scrap, electronic components, lubricants and other auxiliary materials are subject to special waste treatment
and may be disposed of only by authorised specialist companies.
Remove substances such as grease, oil, preservatives and cleaning agents from the device separately and in an environmentally compatible manner. Use approved containers to catch and keep the respective substances. Until final disposal, store containers, clearly marked with information about the content, level and date, in such a way that they cannot be misused.
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DKDHR |
Installation, start-up and operating instructions FLS-50
2 Safety
This section gives an overview of all important safety aspects for optimum protection of personnel and for the safe and fault-free operation of the device.
The individual chapters also contain specific safety information, marked with symbols, to prevent direct hazards.
2.1 General
When it was developed and produced, the device complied with all applicable, acknowledged rules of technology and is deemed to be safe to operate. However, the device may harbour risks if it was installed by unqualified personnel or is not used for its intended purpose. Therefore, every person who is to work on or with the device must have read and understood the operating manual before commencing work. The operator is advised to have personnel confirm that they acknowledge the operating manual.
Changes of any type, additions or conversions to the device are not allowed.
NOTE!
Always coordinate any changes or extensions with the manufacturer.
All safety, warning and operating instructions for the device must be kept in a legible condition. Damaged signs or stickers must be replaced without delay.
Specified settings and adjustment ranges must be complied with.
2.2 Responsibility of the operator
•Always keep the operating manual near the device and make sure that it is accessible at all times for installation, operating, maintenance and cleaning personnel.
•Operate the device only in a technically faultless and safe condition.
•Keep safety features freely accessible at all times and check them regularly.
Statements regarding occupational safety refer to the regulations of the European Union applicable at the time the device was manufactured. The operator must ensure that the listed occupational safety measures comply with the current status of the regulations and observe new regulations throughout the entire service life of the device. Outside the European Union the applicable occupational safety laws and regional regulations and provisions must be complied with.
Apart from the occupational safety information in this operating manual, the general safety, accident prevention and environmental protection regulations applicable to the use of
the device must be observed and complied with. The operator and his authorised personnel are responsible for fault-free operation of the device and for clear definition of responsibilities regarding installation, operation, maintenance and cleaning of the device.
The information in the operating manual must be followed completely and absolutely.
The operator must also ensure that
–in a risk assessment other risks arising due to the particular working conditions at the place where the device is installed are identified.
–all other work and safety information identified in the workplace risk assessment is defined in operating instructions.
–the German Ordinance on Industrial Safety and Health (BetrSichV, Federal Law Gazette I 2002, 3777) applies.
2.3 Intended use
The operating safety of the device is guaranteed only if it is used as intended in accordance with the data in the operating manual.
Intended use also includes correct adherence to the installation, operation, maintenance and cleaning instructions.
Any additional and/or other use of the device is not allowed and shall be deemed to be an unintended use. Claims of any kind against the manufacturer and/or his agents due to damage caused by unintended use of the device shall be excluded. The operator and/or owner shall be solely liable for all damage resulting from unintended use .
2.4 Possible misuse |
NOTE! |
The device is installed inside a system and has no |
e.g. Emergency stop button, etc. |
separate control. With the installation the |
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operator must ensure that suitable safety |
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features are available so that the device can be |
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shut down in case of danger or faults. |
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Installation, start-up and operating instructions FLS-50
2.5 Occupational safety
If the instructions on occupational safety are followed, this can prevent risks for persons and/ or the system.
Non-compliance with these instructions can result in risks for persons and objects due to
mechanical effects or failure of the system and the entire workplace.
Non-compliance with the safety regulations voids all claims for compensation.
2.6 Personal protective equipment
When working on the device, the following must be worn:
Industrial protective clothing
is tightly fitting work clothing with low tear resistance, close fitting sleeves and with no protruding parts. Its main
purpose is to protect the wearer when he or she is reaching into moving parts.
Do not wear rings, chains or other jewellery.
Protective gloves
to protect the hands against friction, abrasion, puncture wounds or more serious injuries caused by hot surfaces.
Safety glasses
to protect the eyes against flying parts and splashes of liquid.
Safety shoes
to protect the wearer against falling parts and slipping on slippery floors.
Hard hat
to protect the wearer against falling and flying parts and materials.
2.7 Potential hazards involving the device
The device was subjected to a risk analysis. The design and construction of the device based on this analysis are state of the art.
However, there are residual hazards.
The device generates a strong spray of liquid when the drainage or ventilation fittings are opened.
The device works with a pressure of 10 bar.
WARNING! Risk of injury.
Risk of liquid spraying out under high pressure. Wear personal protective
equipment when carrying out all work on the device .
The device works with electrical voltages up to 230 V and currents up to 16 A.
WARNING! Risk of injury from electrical current.
Electrical energies can cause very serious injuries. There is a danger to life if the insulation or individual components are damaged.
–Before carrying out any maintenance, cleaning or repair work, switch off the main switch and make sure that it cannot be switched on again.
–If work is being carried out on the electrical system, isolate it from the power supply.
–Do not remove or disable any safety facilities by altering them.
WARNING! Risk of injury. Sharp-edged parts of the housing and
sharp corners can cause skin abrasions. Wear protective gloves when working on the device.
WARNING! Risk of burning.
Hot surfaces can cause serious burns. Always wear personal protective equipment when carrying out all work on the device .
The device works at a maximum temperature of 95°C.
Components in the device may contain automatic moving parts (motors, gears, etc.). The devices can be very heavy.
WARNING! Crushing hazard. When the device is being transported, also if lifting equipment is used, crushing can occur due to the weight. The
device may contain components that move with electricity (motors, gears) which could also cause crushing if they are touched during operation.
Always isolate the device and wear protective clothing when working on the device.
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Installation, start-up and operating instructions FLS-50
2.8 Emergency stop switch
The device is installed inside a system and has no separate control. The operator must ensure that emergency stop switches in compliance with applicable accident prevention regulations are
installed. The operator must prove that he has informed operating personnel about the location and functions of the emergency stop switches.
2.9 Operating personnel
The device may be operated and maintained only by authorised, trained and instructed personnel. These personnel must have been instructed especially about potential risks.
An instructed person is deemed to be a person who has been instructed about the work he or she has been entrusted with and the potential risks associated with improper behaviour and, if necessary, who has been instructed about the necessary safety features and safety measures. Trained personnel are deemed to be persons who, due to their professional training, knowledge and experience and knowledge of the relevant regulations, are able to assess the work they have been entrusted with and recognise potential risks.
If personnel do not have the required knowledge, they must be trained. The responsibilities for operation and
maintenance must be clearly defined and adhered to so that there is no unclear distribution of competency under the aspect of safety.
The device may be operated and maintained only by persons who can be expected to carry out their work reliably. The mode of working must not have an adverse effect on the safety of persons, the environment or the device. Persons under the influence of drugs, alcohol or medication that slows their reactions may not carry out any type of work on or with the device. The choice of personnel must take account of the national young persons employment laws and any underlying job-specific regulations. Operators must also ensure that no unauthorised persons work on or with the device. Unauthorised persons, such as visitors etc., may not come into contact with the device. They must remain at an appropriately safe distance from the device.
Users must report changes on the device that have an adverse effect on safety to the operator immediately.
2.10 What to do in case of danger or accidents
In case of danger or an accident, switch the device off immediately with an emergency stop switch.
Safety features with an emergency stop function should be activated only in emergency situations.
Safety features may not be used to switch the device off under normal conditions.
Always be prepared for accidents or fire. Have first aid facilities (medical kit, eye rinse bottles, etc.) and fire extinguishers nearby. Personnel must be confident in the use of and
know the locations of safety, accident reporting, first aid and rescue facilities. This ensures that risks are averted and that the best possible assistance is given in case of accidents.
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Installation, start-up and operating instructions FLS-50
2.11 Residual hazards/risk analysis
Location of hazard |
Type of hazard |
Aim of protection |
Measure |
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Shut-off valves and fittings in |
Crushing in case of manual |
Manual operation of the |
The design leaves sufficient |
the station |
operation |
shut-off valves and fittings |
space for ergonomic |
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must be possible without |
operation. |
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danger. |
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Piping and components in |
Can burn the skin if touched |
Safe contact with open |
Thermal insulation of piping |
the station |
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station |
and components |
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Warning signs at the station |
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Warning information in the |
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operating manual |
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Complete station |
Electric shock |
Safe contact with the station |
Protection against accidental |
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contact |
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Complete station |
Splashing liquids and/or |
Controlled reduction of |
Safety features acc. to DIN |
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steam under high pressure |
excess pressure in the event |
4747 T1 (hot water) and/or |
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of a fault |
DIN EN 12828 |
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Complete station |
Overheating of the station or |
Stop heating in case of a fault |
Safety features acc. to DIN |
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heat transfer to the |
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4747 T1 (hot water) and/or |
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connected house system in |
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DIN EN 12828 |
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excess of the permitted |
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temperature |
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During operation, the residual hazard can be limited to the following alphabetical value according to Suva risk assessment: B5/C4/D3/E2. The residual hazard potential results from non-compliance with the above operating
The system is equipped with the following warning sign, which points out the most important residual hazards:
instructions. The assemblies were produced according to the explicit specifications of the operator, who is responsible for compliance with the specified parameters, selection and qualification of the operating personnel.
The system must be operated only by trained , qualified personnel after they have studied the enclosed documentation in detail. Before the system is started for the first time, it must be filled and completely deaerated. Exceeding the permitted operating pressure or the maximum permitted operating temperature according to the type plate or any other use apart from the intended use are not allowed.
Risk of burning from touching the surface or from the emissions of hot media (water/ steam). Avoid touching the assembly or wear suitable protective clothing.
Crushing hazard when operating the assemblies
Risk of electric shock before working on the electrical system, isolate it
All flange connections, screw joints and electrical clamp and screw connections must be checked and tightened if necessary before the system is filled and put into operation. Switch pumps on only when they are full (no dry running).
Before starting the system for the first time, install it professionally (if not completely assembled in the factory):
•Safety valve/drainage and steam piping according to DIN 4751 and/or DIN 1988
•Strainer in primary supply line/secondary return line
•Potential equalisation acc. to VDE 0100 Part 540 (earthing/earth wires/potential equalisation)
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Installation, start-up and operating instructions FLS-50
3 Technical data |
3.1 Technical and main system data |
plate and in the documents in the appendixes |
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You will find the main system data on the type |
(cover sheet, circuit diagram, data sheet). |
3.1.1 Circuit diagram
Installed in top buffer tank
Scope of delivery
Buffer tank
Top
HW ¾“
Return
Buffer tank
CW
Buffer tank ¾“
Middle
Buffer tank Bottom
Circ.
¾“
3.1.2. Bill of materials
1Three-way mixer valve
2Three-way valve On/Off
3Pump
4Pump, circulation
5Plate heat exchanger
6Temperature/flow meter
7Controller
8Temperature sensor
9Safety valve
10Non-return valve
11Shut-off valve
12Temperature sensor
13Temperature sensor
14Temperature sensor
Optional accessories
Option 1: Temperature control, inlet
Option 2: Circulation
Option 3: Shut-off valves/ball valves
Option 4: Stratification control
3.1.3 Type plate
The type plate is attached to the system. The type plate contains the following data:
–Manufacturer
–Device no.
–Year of construction (year/calendar week)
–Type
–Power
–Dimensioning parameters
–Max. permissible operating temperature
–Max. permissible operating pressure
– Test pressure |
Example of type plate |
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Installation, start-up and operating instructions FLS-50
3.1.4 Pressure loss curve
3.1.5 Capacity examples
Capacity examples
HW |
HW |
HW |
Supply/Return |
Flow |
Temperature |
Flow rate |
Power |
Primary |
Primary |
°C |
l/min. |
CW |
°C |
l/min. |
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10/45 |
20 |
50 |
60/20 |
18 |
10/45 |
14 |
34 |
50/27 |
21 |
10/45 |
25 |
60 |
75/16 |
15 |
10/55 |
18 |
55 |
75/20 |
15 |
10/55 |
12 |
36 |
60/30 |
18 |
* Max. chloride compounds 150 mg/l
3.1.6 FLS-50 + Options
When possible options are used the pressure loss ratio changes as shown in the curve below. The TVM-H 25 mixing valve, among other elements, is recommended for primary-side installation with service water values with dH > 20. This means a recommended flow temperature of 65 °C can be set.
FLS 50 + Optioner
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60,00 |
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6 |
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55,00 |
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50,00 |
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5 |
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45,00 |
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40,00 |
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4 |
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35,00 |
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| <![if ! IE]> <![endif]>[kPa] |
30,00 |
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3 |
<![if ! IE]> <![endif]>[m] |
| <![if ! IE]> <![endif]>dP |
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<![if ! IE]> <![endif]>H |
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25,00 |
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20,00 |
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2 |
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15,00 |
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10,00 |
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5,00 |
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0,00 |
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Q [l/min]
FLS 50 PRI
FLS 50 + Optioner FLS 50 + AMZ 113 FLS 50 + TVM H25 Wilo RS 15/6
12 |
VI.GE.T1.02 © Danfoss 12/2010 |
DKDHR |
Installation, start-up and operating instructions FLS-50
3.1.7 Dimensions and photo of components
1Three-way valve (option)
2Three-way valve On/Off (option)
3Pump
4Pump, circulation (option)
5Plate heat exchanger
6Temperature/flow meter
7Controller
8Temperature sensor
9Safety valve (option)
10Non-return valve
11Shut-off valve (option)
10
5
3
8
7
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Primary |
Primary DCW |
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Supply |
Return |
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Primary |
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6
DHW
Domestic hot water
130 mm
DKDHR |
VI.GE.T1.02 © Danfoss 12/2010 |
13 |
Installation, start-up and operating instructions FLS-50
4 Function |
4.1 Function / General |
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The FLS-50 is a domestic hot water heater for a |
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single household; the water is heated by an |
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instantaneous water heater |
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in combination with a buffer tank. The hot water |
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supply and hot water feed to the buffer tank can |
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generally be ensured with solar energy in |
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combination with other energy sources, such as |
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oil or gas boilers, district heating or heat pumps. |
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The instantaneous flow process offers good |
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protection against Legionella because the |
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amount of warm water in the heat exchanger is |
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kept to a minimum. The heat exchanger ensures |
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an adequate supply of domestic hot water at |
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supply temperatures from 50°C. |
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The FLS-50 ensures a constant hot water |
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temperature, even in case of peak flow and |
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fluctuation supply temperatures, so that the |
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consuming devices are supplied with sufficient |
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hot water in all operating conditions. |
Primary circulation system
The primary side consists of a pump, a nonreturn valve and a temperature sensor.
Secondary circulation system
The secondary side consists of a flow/ temperature sensor on the hot water side and a temperature sensor at the cold water inlet.
Control
The electronic controller in the FLS-50 ensures a constant hot water temperature.
The controller receives signals from 3 sensors that measure the supply temperature in the primary side in the buffer tank, the secondary flow rate, the cold water inlet and the hot water outlet. The electronic controller converts these signals for infinitely variable speed control of the primary side pump that supplies the heat exchanger with energy from the buffer tank as required.
Options
Options include a primary-side mixer valve, a primary-side switching valve and sensor, an installation kit for HW circulation, constant maintenance of the circulation temperature by power control of the pump and shut-off and non-return valves at the CW inlet.
Construction
All pipes are stainless steel with threaded connections. The entire mechanical construction is fixed in a prefabricated EPP insulated cabinet by means of a click-in system and thus ensures stability and easy replacement of spare parts. The FLS-50 is to be installed vertically on the buffer tank or on a wall next to the buffer tank.
Installed in top buffer tank
Scope of delivery |
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Buffer tank |
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Top |
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DHW |
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¾“ |
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Return |
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Buffer tank |
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Buffer tank |
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DCW |
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¾“ |
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Middle |
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Buffer tank Bottom |
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Circ. |
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¾“ |
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1 |
Three-way valve |
Optional accessories |
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2 |
Three-way valve On/Off |
Option 1: |
Temperature control, inlet |
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3 |
Pump |
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Option 2: |
Circulation |
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4 |
Pump, circulation |
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Option 3: |
Shut-off valves/ball valves |
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5 |
Plate heat exchanger |
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Option 4: |
Stratification control |
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6 |
Temperature/flow meter |
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7 |
Controller |
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8 |
Temperature sensor |
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9 |
Safety valve |
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10 |
Non-return valve |
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11 |
Shut-off valve |
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12 |
Temperature sensor |
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13 |
Temperature sensor |
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14 |
Temperature sensor |
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14 |
VI.GE.T1.02 © Danfoss 12/2010 |
DKDHR |
Installation, start-up and operating instructions FLS-50
5 Setup |
5.1 Assembly and installation/general |
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Domestic water heater systems are usually |
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delivered completely piped and wired in a foam |
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insulated cabinet. All assemblies and |
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components are fixed in the insulated cabinet by |
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means of a click-in system. System connections |
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are specified in the data sheet and in these |
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instructions. |
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Make sure that the wall has the necessary |
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load-bearing capacity for the system (including |
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the weight of the water!). |
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Examine the prepared connections carefully so |
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that they can be joined without any tension. |
NOTE!
Do not use a pipe wrench on screwed joints. Use only a suitable spanner.
You will find pictures of the device below.
5.1.1 Figure FLS-50
Assembly holes
DKDHR |
VI.GE.T1.02 © Danfoss 12/2010 |
15 |
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