Danfoss S 22 Operating guide [da]
MAKING MODERN LIVING POSSIBLE
S 22
Instructions for installation and use
Danfoss District Energy
Instructions for installation and use |
S 22 |
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S 22 with cover |
S 22, ECL 310, A266 |
1.Content
1. |
Content................................................................................................................................................................................................................................................... |
2 |
2. |
Product introduction, S 22 - ECL Comfort 310, A266, electronic control of 2 circuits............................................................................................... |
3 |
3. |
Enduser instructions, description and initial adjustment.................................................................................................................................................... |
4 |
4. |
Installation instructions, connection, safety and handling................................................................................................................................................. |
5 |
5. |
Installation instructions, GETTING STARTED............................................................................................................................................................................. |
6 |
6. |
Installation instructions, general................................................................................................................................................................................................... |
7 |
7. |
Electrical connections, ECL Comfort 310................................................................................................................................................................................... |
8 |
8. |
Adjustment and commissioning, heating circuit.................................................................................................................................................................... |
9 |
9. |
Adjustment and commissioning, DHW circuit - App. A266.............................................................................................................................................. |
11 |
10. |
Operation and maintenance....................................................................................................................................................................................................... |
12 |
11. |
Maintenance plan............................................................................................................................................................................................................................ |
13 |
12. |
Troubleshooting............................................................................................................................................................................................................................... |
14 |
13. |
EU Declaration of Conformity..................................................................................................................................................................................................... |
16 |
14. |
Commissioning Certificate........................................................................................................................................................................................................... |
17 |
2 DKDHR |
VI.IE.D1.01 |
Danfoss District Energy |
Instructions for installation and use |
S 22 |
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2. Product introduction, S 22 - ECL Comfort 310, A266, electronic control of 2 circuits
Cover
Note!
The diagram is intended as a guide.
Principal components
1.Plate heat exchanger, brazed, DHW
2.Valve housing, HE
3.Actuator, HE
4.Valve housing, DHW
5.Actuator, DHW
6.Controller Danfoss ECL Comfort 310
7.Differential pressure controller AVP-F
8.Strainer
9.Thermometer, DH supply
10.Thermometer, DH return
11.Pump, HE
12.Circulation pump, DHW
13.Thermometer, DHW
14.Thermometer, HE supply
15.Thermometer, HE return
16.Safety valves, DHW
17.Air valve
18.Manometer, DH supply
19.Manometer, DH return
20.Fitting piece for heat meter (optional)
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Alternative equipment
Fitted standard pump can be replaced with an A-labelled Grundfos pump. Please contact our sales department for further information.
Accessories available as extra equipment
White cover with door - Code No. 144B2056
Replacement parts (heat exchangers without insulation cover)
Heat exchanger XB37M-1 20 |
Code No. 004B1692 |
Heat exchanger XB37M-1 30 |
Code No. 004B1694 |
Heat exchanger XB37M-1 40 |
Code No. 004B1696 |
Heat exchanger XB37M-1 50 |
Code No. 004B1697 |
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Danfoss District Energy |
VI.IE.D1.02 |
DKDHR 3 |
Instructions for installation and use |
S 22 |
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3. Enduser instructions, description and initial adjustment
Instructions
Please read these instructions carefully before installing and commissioning this unit. The manufacturer accepts no liability for loss or damage resulting from failure to comply with these instructions for use. Read and follow these instructions carefully to prevent the risk of physical injury and/or damage to property. Exceeding the recommended operating parameters appreciably increases the risk of personal injury and/or damage to property.
Installation, commissioning and maintenance must be carried out by qualified and authorised personnel (both plumbing and electrical work).
Once the station has been installed and is operating, there is normally no need to alter the settings or other functions. The district heating unit is very reliable and easy to operate.
Description
These instructions apply to S 22 with Danfoss ECL Comfort 310 controller for control of both the heating circuit as well as a domestic hot water circuit based on an instantaneous water heater (Application A266).
S 22 units are fitted with a differential pressure controller that maintains a constant pressure in the radiators. The supply temperature to the heating circuit is controlled electronically, and also the domestic hot water temperature is controlled electronically.
We recommend regular inspections of the unit - ideally in connection with readings of the district heating meter.
Pay special attention to any leaks and an excessively high return temperature in the district heating circuit (poor cooling of the district heating water). Cooling – i.e. the difference between the supply and return temperature of the district heating water – has a significant effect on the overall energy economy. Please note that the district heating return temperature is directly related to the return temperature from the heating circuit (and the return temperature from the DHW plate heat exchanger). Therefore, it is important to focus on the supply and return temperature in the heating system.
The difference should typically be 30–35°C in systems that operate with radiators. In systems that feature floor heating, the difference is typically 5–10°C.
Initial setting
S 22 is electronically controlled (fully automatic) and there is normally no need to alter the settings or other functions. The DHW and HE temperatures are set during initial adjustment and commissioning of the unit.
We suggest that you contact qualified and authorised personnel, if it becomes necessary to change the parameters (temperatures,
Irregularities
When reading the meter, check all joints and connections for leaks.
If you identify any irregularities/leaks, contact your professional provider for assistance.
Warning! Hot surfaces
Parts of the unit may be very hot and can cause burn injuries. Be very careful when you are in the immediate vicinity of the unit.
Warnings about high pressure and high temperature
The maximum supply temperature in the district heating network can be up to 120°C and the operating pressure can be up to 16 bar. This may result in a risk of scalding from touching the unit and from outflow of the medium (water/steam). Exceeding the unit design data and operating parameters for pressure and temperature carries an appreciable risk of personal injury and/or damage to property.
Emergencies
In the event of fire, leaks or other hazards, immediately shut off all sources of energy to the unit, if possible, and call for appropriate assistance.
If the domestic hot water is discoloured or malodorous, shut off all ball valves on the unit notify all users and call for professional assistance without delay.
4 DKDHR |
VI.IE.D1.02 |
Danfoss District Energy |
Instructions for installation and use |
S 22 |
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4.Installation instructions, connection, safety and handling
Instructions
Please read these instructions carefully before installing and commissioning this unit. The manufacturer accepts no liability for loss or damage resulting from failure to comply with these instructions for use. Read and follow these instructions carefully to prevent the risk of physical injury and/or damage to property. Exceeding the recommended operating parameters appreciably increases the risk of personal injury and/or damage to property.
Installation, commissioning and maintenance must be carried out by qualified and authorised personnel (both plumbing and electrical work).
Heat source
The unit is primarily designed for connection to district heating. Alternative energy sources can be used if the operating conditions are equivalent to district heating at all times.
Application
The unit is designed exclusively to heat water. The unit must not be used to heat other media.
The unit is to be connected to the household piping in a frost-free room, where the temperature does not exceed 50°C, and where the relative humidity is not higher than 80%. The unit must not be covered, bricked in or otherwise cut off from access.
Choise of materials
Only use materials that comply with local regulations.
Corrosion
The maximum chlorine content of the medium must not be higher than 300 mg/l. The risk of corrosion increases considerably if the recommended chlorine content is exceeded.
Safety valve(s)
Safety valves must always be installed in accordance with the applicable local regulations.
Noise level
≤ 55 dB
Storage
Before installation, the unit(s) must be stored in a dry, heated (i.e. frostfree) room.
(Relative humidity max. 80% and storage temp. 5–70°C).
The units must not be stacked higher than the limit at the factory. Units supplied in cardboard packaging must be lifted using the handles incorporated in the packaging. Units must be placed on pallets for transport/moving across large distances.
As far as possible, do not lift the unit by the pipes. Lifting by the pipes may cause leaks. REMEMBER to retighten.
Disposal
Dispose of the packaging in accordance with the local regulations for disposal of used packaging materials. The unit is made of materials that cannot be disposed of together with household waste.
Closeallenergysourcesanddisconnectallconnectionpipes.Disconnect anddismantletheproductfordisposalinaccordancewiththeapplicable local regulations for the disposal of the individual components.
Connection
It must be possible to cut off all energy sources to the unit – including electrical connections – at all times. The unit must be connected to an electrical equalizer connection.
Potential equalization/grounding
Potential equalization is an electrical equalizer connection to secure against user contact with dangerous voltage, which may occur for example between two piping systems. Potential equalization reduces corrosion in heat exchangers, water heaters, district heating units and plumbing installations. Equalization of potentials should be effected according to local regulations.
Warning! Hot surfaces
Parts of the unit may be very hot and can cause burn injuries. Be very careful when you are in the immediate vicinity of the unit.
Warnings about high pressure and high temperature
The maximum supply temperature in the district heating network can be up to 120°C and the operating pressure can be up to 16 bar. This may result in a risk of scalding from touching the unit and from outflow of the medium. Exceeding the unit design data and operating parameters for pressure and temperature carries an appreciable risk of personal injury and/or damage to property.
Emergencies
Intheeventoffire,leaksorotherhazards,immediatelyshutoffallenergy sources to the unit, if possible, and call appropriate assistance.
If the domestic hot water is discoloured or malodorous, shut off all ball valves on the unit, notify all users and call professional assistance without delay.
Warning about damage during transport
Onreceptionoftheunit,andbeforeinstallingit,checkforanyevidence of damage during transport.
The unit must be handled and moved with the greatest care and attention.
NB! -Tightening of connections
Before filling the unit with water, ALL pipe connections MUST be retightened, as vibrations during transport may have caused leaks. Once the unit has been filled and the system is hot, ALL pipe connections MUST be retightened once more. DO NOT OVERTIGHTEN THE PIPE CONNECTIONS – see page 7,“Test & connections”.
Handling
Werecommendthatyouwearsuitablesafetyfootwearwhilehandling and installing the unit.
We recommend that you wear suitable safety working gloves while handling and installing the unit.
Donotremoveanytransportbracketsuntiltheunitisintheimmediate vicinity of the installation site.
Danfoss District Energy |
VI.IE.D1.02 |
DKDHR 5 |
Instructions for installation and use |
S 22 |
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5.Installation instructions, GETTING STARTED
Connect the unit to the household piping in accordance with the labelling at the bottom and/or in accordance with the instructions in this manual.
Please also refer to page 7, top, Installation instructions, General.
Mount S 22 on a solid wall using expansion bolts or similar. Please note that the unit weighs more than 60 kg!
See page 7 for more details.
GETTING STARTED is a quick guide and some details in connection with installation and commissioning may require additional information, which can be found elsewhere in this instruction manual.
1.When the unit has been securely mounted, close all shut-off valves on supply and return pipes before connecting the unit to the household piping.
2.Mount the district heating meter (if the unit includes built-in fitting piece for heat meter - see page 7 in the instructions, if necessary).
3.IMPORTANT! Tighten all pipe connections, as they may have loosened during transport and handling (do NOT overtighten!) - check that the air valve in top of the unit is closed.
4.Establish a drain connection on the safety valves in compliance with the aplicable legislation.
5.Open the ball valves for HE supply and return and fill the system with water by carefully opening the ball valve for the district heating supply flow and at the same time venting the system. Finally, open the ball valve for the district heating return flow.
6.Carefully open the ball valve for the DCW inlet.
7.Check the unit and the household piping thoroughly for leaks.
8.Pressure test the entire system for leaks in accordance with the applicable regulations.
9.Connect the ECL automatics to the electricity supply, but do not switch on the power.
10.Heat the system and vent the radiator circuit/heating side thoroughly on the radiators and the air valve, see pages 11 and 13 “Venting of system” in the instruction manual
11.Now switch on the automatics at the mains.
12.Finish by adjusting the unit in accordance with the instructions and remember to fill-in the commissioning certificate on page 18.
13.IMPORTANT! Heating and cooling of the system may cause leaks. Therefore it may be necessary to retighten the connections in the period after commissioning.
District heating |
DCW |
Circ. DHW |
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HE |
HE |
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supply return |
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return |
supply |
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Primary |
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Domestic water |
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Secondary |
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6 DKDHR |
VI.IE.D1.02 |
Danfoss District Energy |
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