Instructions for installation and use
Indirect, fully insulated district heating subtations Akva Lux II VXi, VXi Solo
Indirect district heating substation for heating and domestic hot water.
VXi
Fully insulated for very low heat losses.
www.danfoss.com
Instructions for installation and use |
Akva Lux II VXi, VXi Solo HWP, VXi Solo H |
Akva Lux II VXi |
VXi Solo HWP |
VXi Solo H |
1.0 Content |
|
|
2.0 |
Installation instructions, safety and handling............................................................................................................................................................... |
3 |
3.0 |
Getting started - Quick guide for easy start-up............................................................................................................................................................. |
4 |
4.0 |
Main components / Connections....................................................................................................................................................................................... |
6 |
5.0 |
Diagrams, Dimensional sketches, Examples.................................................................................................................................................................. |
8 |
6.0 |
General, Mounting of heat meter and safety valves................................................................................................................................................ |
11 |
7.0 |
Filling the system with water............................................................................................................................................................................................ |
12 |
8.0 |
Variable connection possibilities..................................................................................................................................................................................... |
13 |
9.0 |
Recirculation (only Akva Lux II VXi)................................................................................................................................................................................. |
14 |
10.0 |
Electricical connections...................................................................................................................................................................................................... |
15 |
11.0 |
Adjustmend and commissioning.................................................................................................................................................................................... |
16 |
12.0 |
Heating circuit, Danfoss ECL 210/310 automatics..................................................................................................................................................... |
17 |
13.0 |
Control of heating circuit................................................................................................................................................................................................... |
18 |
14.0 |
Heating circuit, pump and summer operation........................................................................................................................................................... |
20 |
15.0 |
Domestic hot water.............................................................................................................................................................................................................. |
22 |
16.0 |
Maintenance........................................................................................................................................................................................................................... |
24 |
17.0 |
Troubleshooting.................................................................................................................................................................................................................... |
26 |
18.0 |
EU Declaration of conformity........................................................................................................................................................................................... |
30 |
19.0 |
Commissioning Certificate................................................................................................................................................................................................ |
31 |
2 | © Danfoss | Produced by Danfoss Redan A/S | 2017.01 |
VI.JV.R1.02 |
Instructions for installation and use |
Akva Lux II VXi, VXi Solo HWP, VXi Solo H |
2. INSTALLATION INSTRUCTIONS, SAFETY AND HANDLING
Instructions
Please read these instructions carefully before installing and comissioning this substation. 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 peroperty. Exceeding the recommended operating parameters considerably increases the risk of personal injury and/or damage to property. Installation, commissioning and maintenance must be carried out by qualified and authorized personnel in compliance with the local safety regulations.
Once the station has been installed and is operating, there is normally no need to alter the settings or other functions. The district heating substation is very reliable and easy to operate.
Energy source
The substation 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 substation is designed only to operate with water and other heating media may not be used.
The substation is to be connected to the household piping in a frost-free room, where the temperature does not exceed 50 °C and the relative humidity is not higher than 80%. The substation must no be covered, bricked in or otherwise cut off from access.
Choise of materials
Only use materials, that comply with local regulations.
Corrosion
The maximum chloride compounds of the medium must not be higher than 300 mg/l.The risk of corrosion increases considerably if the recommended chloride content is exceeded.
Safety valve(s)
Installation of safety valve(s) must always be in compliance with local regulations.
Noise level.
≤ 55 dB.
PTC2+P controller for domestic hot water
The controller is preset from factory and sealed with a red sticker. This sealing must not been broken.
The warranty becomes void if the sealing is broken.
Storage
Before installation, the units must be stored in a dry, heated (i.e. frostfree) room.
(Relative humidity max. 80% and storage temperature 5-70 °C).
The units must not be stacked higher than the limit at the factory (max. 8 layers) 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 substation 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 substation is made of materials that cannot be disposed of together with household waste.
Close all energy sources and disconnect all connection pipes. Disconnect and dismantle the product for disposal in accordance with the applicable 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.
Potential bonding should be carried out according to 60364-4-41: 2007 and IEC 60364-5-54: 2011.
Bonding poing is marked on the mounting plate below right corner withanearthingsymbolandtherewillbeaholeinthestationmounting plate and a label with earth symbol.
Warning! Hot surfaces
Parts of the substation may be very hot and can cause burn injuries. Be very careful when you are in the immediate vicinity of the substation.
Warning of 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 substation and from outflow of the medium (water/steam). Exceeding the substation 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 substation, if possible and call for appropriate assistance.
If the domestic hot water is discoloured or malodorous, shut off all ball valves on the substation, notify all users and call for professional assistance immediately.
Warning of damage during transport
On reception of the substation, and before installing it, check for any evidence of damage during transport.
The substation must be handled and moved with the greatest care and attention.
IMPORTANT -Tightening of connections
Before adding water to the system, ALL pipe connections MUST be retightened, as vibrations during transport may have caused leaks. Once the substation has been filled and the system has been put into operation, ALL pipe connections MUST be tightened once more.
(Do not overtighten! - See page 8,Test and Connections)
Handling
We recommend that you wear suitable safety footwear while handling and installing the substation.
NOTE: Interventions/rework on our components results in loss of warranty.
VI.JV.R1.02 |
© Danfoss | Produced by Danfoss Redan A/S | 2017.01 | 3 |
Instructions for installation and use |
Akva Lux II VXi, VXi Solo HWP, VXi Solo H |
3. GETTING STARTED - QUICK GUIDE FOR EASY START-UP
Mounting
Connect the substation to the household piping in accordance with the labelling at the bottom and/or in accordance with the instructions in this manual. Upon delivery the substation is prepared for connection in bottom of the substation, but can also be established in top.
If the household piping system features domestic hot water recirculation, the substation must be connected to the recirculation system.Thecirculationsetforrecirculationconnectionisnotstandard equipment. The set must be purchased as extra equipment.
We recommend establishing recirculation BEFORE mounting the substation on the wall.
For instructions about recirculation connection, see page 14.
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.
GETTING STARTED AKVA LUX II VXi
The VXi substations offer variable connection possibilities, as connections of pipes can be established in the top or in the bottom of the substation.- Upon delivery the substation is prepared for connection in bottom of the substation. For change of connection from bottom to top, demount plugs on connection pipes in top of substation and ball valves on connection pipes in bottom of substation, and mount plugs in connection pipes in bottom of substation. See page 13 for further information.
For connection in TOP for DCW and DHW please note that this includes relocation of the built-in blind plates BEFORE mounting the substation on the wall. (Please see instruction on page 13 for further information).
Ifthehouseholdpipingsystemfeaturesdomestichotwaterrecirculation, the substation must be connected to the recirculation system, - according to instructions on page 14.
1.Mount the substation on a solid wall using two sturdy bolts (max. 8 mm), screws, expansion bolts or similar.
2.Tighten all pipe connections, as they may have loosened during transport and handling.
3.Mount the district heating meter (see page 11).
4.On systems that feature a safety valve, establish a drain connection in compliance with the applicable legislation.
5.Fill the heat exchanger / the system with water according to the instructions on page 12.
6.Open the ball valve for the HE supply and return flow, as well as the DHW outlet and heat up the system.
7.Check the substation and the household piping thoroughly for leaks.
8.Pressure test the entire system for leaks in accordance with the applicable regulations.
9.Connect pump and automatic components, if any, 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, if any.
11.Connection
Now switch on the pump and automatic components, if any.
12. Finish by adjusting the substation in accordance with the instruction manuals and remember to fill out the Commissioning Certificate page 31.
Note!
Heating and cooling the substation may cause leaks.Therefore it may be necessary to retighten the connections in the period after commissioning.
Note!
Never lift the station by its front insulation cover!
GETTING STARTED - VXi Solo HWP / VXi Solo H
The VXi substations offer variable connection possibilities, as connections of pipes can be established in the top or in the bottom of the substation.- Upon delivery the substation is prepared for connection in bottom of the substation. For change of connection from bottom to top, demount plugs on connection pipes in top of substation and ball valves on connection pipes in bottom of substation, and mount plugs in connection pipes. See page 10 for further information.
For connection in TOP for DCW and DHW please note that this includes relocation of the built-in blind plates BEFORE mounting the substation on the wall. (Please see instruction on page 13 for further information).
1.Mount the substationon a solid wall using two sturdy bolts (max. 8 mm), screws, expansion bolts or similar.
2.Tighten all pipe connections, as they may have loosened during transport and handling.
3.Mount the district heating meter (see page 11).
4.On systems that feature a safety valve, establish a drain connection in compliance with the applicable legislation.
5.Fill the heat exchanger / the system with water according to the instructions on page 12.
6.Open the ball valve for the HE supply and return flow and heat up the system.
7.Check the substation and the household piping thoroughly for leaks.
8.Pressure test the entire system for leaks in accordance with the applicable regulations.
9.Connect pump and automatic components, if any, 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, if any.
11.Connection
Now switch on the pump and automatic components, if any.
12. Finish by adjusting the substation in accordance with the instruction manuals and remember to fill out the Commissioning Certificate page 31.
4 | © Danfoss | Produced by Danfoss Redan A/S | 2017.01 |
VI.JV.R1.02 |
Instructions for installation and use |
Akva Lux II VXi, VXi Solo HWP, VXi Solo H |
The station is easily mounted on the wall. It is recommended that at least two people are involve in the installation.
Note: Never lift the unit by its front insulation cover!
Easy access for setting the ECL 210/310 controller.
The control panel is removed with a single click, and allows easy access to the components behind it.
The station can easily be connected to the household piping.
By removing the white front panel, easy access is provided to the display and components for regulatory and maintenance purposes.
Through the cut-out piece in the front insulation cover free access is provided to the pump.
The front insulation cover can easily be removed without tools.
Please note: The VXi station is shown here with ECL 110 controller, - but it is supplied with ECL 210 or 310 controller.
VI.JV.R1.02 |
© Danfoss | Produced by Danfoss Redan A/S | 2017.01 | 5 |
Instructions for installation and use |
Akva Lux II VXi, VXi Solo HWP, VXi Solo H |
4. MAIN COMPONENTS / CONNECTION
Akva Lux II VXi
1.Plate heat exchanger HE
2.Plate heat exchanger DHW
5.Strainer
6.Non-return valve
7A. Ball valve ¾ ET/ET 120 mm for thermometer/manometer
7B. Ball valve ¾ IT/ET 120 mm for thermometer
7C. Ball valve ¾ ET/ET 120 mm for DVGW
8.Circulation pump, HE
11.Safety valve, HE
12.Safety valve, DHW
13.Thermometer
15.Manometer
16.Expansion vessel
23A. Sensor pocket ½”/10x1, plug M10 for heat meter
23B. Plugs ½” with O-Ring
24.Fitting piece for heat meter ¾” x 110 mm
25.Danfoss Controller ECL 310/A337
26.Pressure independent control valve with integrated flow
38.limiter AVQM PTC2+P Controller
40.Thermostat for bypass/circulation
57.Safety thermostat Jumo AT
Accessories available as extra equipment (mounting on site)
Recirculation pipe set - Code No. 145H3879
For systems that feature domestic hot water recirculation.
KFE tap - code No. 145H3717
For filling and draining 1/4”
16
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<![if ! IE]> <![endif]>supply |
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<![if ! IE]> <![endif]>return |
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<![if ! IE]> <![endif]>return |
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<![if ! IE]> <![endif]>supply |
<![if ! IE]> <![endif]>DHW |
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<![if ! IE]> <![endif]>DCW |
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<![if ! IE]> <![endif]>DH |
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<![if ! IE]> <![endif]>DH |
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<![if ! IE]> <![endif]>HE |
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<![if ! IE]> <![endif]>HE |
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Primary |
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Secundary |
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6 | © Danfoss | Produced by Danfoss Redan A/S | 2017.01 |
VI.JV.R1.02 |
Instructions for installation and use |
Akva Lux II VXi, VXi Solo HWP, VXi Solo H |
VXi Solo HWP
1.Plate heat exchanger HE
4.Differential pressure controller with flow limitation AVPB-F
5.Strainer
7A Ball valve ¾ ET/ET 120 mm for thermometer/manometer
7B Ball valve ¾ IT/ET 120 mm for thermometer
8.Circulation pump, HE
11.Safety valve, HE
13.Thermometer
14.Pressure relief
15.Manometer
16.Expansion vessel
23A. Sensor pocket ½”/10x1, plug M10 for heat meter
23B. Plug ½” with O-ring
24.Fitting piece for heat meter ¾” x 110 mm
25.Danfoss Controller ECL 310/A337
Accessories available as extra equipment (mounting on site)
KFE tap - code No. 145H3717 For filling and draining 1/4”
VXi Solo H
1.Plate heat exchanger HE
5.Strainer
7A. Ball valve ¾ ET/ET 120 mm for thermometer/manometer
7B. Ball valve ¾ IT/ET 120 mm for thermometer
8.Circulation pump, HE
11.Safety valve, HE
13.Thermometer
14.Pressure relief
15.Manometer
16.Expansion vessel
23A. Sensor pocket ½”/10x1, plug M10 for heat meter
23B. Plug ½” with O-ring
24.Fitting piece for heat meter ¾” x 110 mm
25.Danfoss Controller ECL 310/A230
30.Pressure independent control valve with integrated flow limiter Danfoss AVQM
Accessories available as extra equipment (mounting on site)
KFE tap - code No. 145H3717 For filling and draining 1/4”
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<![if ! IE]> <![endif]>DH supply |
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<![if ! IE]> <![endif]>DH return |
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<![if ! IE]> <![endif]>HE return |
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<![if ! IE]> <![endif]>HE supply |
<![if ! IE]> <![endif]>Cylinder supply |
<![if ! IE]> <![endif]>Cylinder return |
||||||||||||||||
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Primary |
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Secundary |
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DHW |
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16
15
25
1
30
8 11
24
23A+B
13
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| <![if ! IE]> <![endif]>DH supply |
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<![if ! IE]> <![endif]>DH return |
<![if ! IE]> <![endif]>HE return |
<![if ! IE]> <![endif]>HE Supply |
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Primary |
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Secundary |
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||||||||
VI.JV.R1.02 |
© Danfoss | Produced by Danfoss Redan A/S | 2017.01 | 7 |
Instructions for installation and use |
Akva Lux II VXi, VXi Solo HWP, VXi Solo H |
|
|
||
5. DIAGRAMS, DIMENSIONAL SKETCHES, EXAMPLES - AKVA LUX II VXI |
|||||
|
1 |
Plate heat exchanger HE |
13 |
Thermometer |
|
|
2 |
Plate heat exchanger DHW |
15 |
Manometer |
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|
5 |
Strainer |
16 |
Expansion vessel 12 L |
|
|
6 |
Non-return valve |
23A |
Sensor pocket ½”/10x1, plug M10 |
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7A |
Ball valve ¾ ET/ET, 120 mm |
|
for heat meter |
|
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for Therm./Mano. |
23B |
Plug ½” with O-ring |
|
|
7B |
Ball valve ¾ IT/IT, for therm. |
24 |
Fitting piece for heat meter |
|
|
7C |
Ball valve ¾ ET/ET, DVGW |
|
3/4” x 110 mm |
|
DHW |
8 |
Circulation pump |
25 |
Danfoss Controller ECL 310/A337 |
|
11 |
Safety valve HE |
26 |
Outdoor sensor, ESMT |
||
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|||||
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12 |
Safety valve DHW |
27 |
Danfoss sensor, ESMC |
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29 |
Danfoss actuator HE, AMV 150 |
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30 |
Pressure independent control |
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valve with integrated flow limiter |
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AVQM |
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Circ. |
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38 |
PTC2+P controller |
|
DCW |
|
40 |
Thermostat for Bypass/ |
||
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Circulation |
||
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HE |
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HE |
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Supply |
Bypass |
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Supply |
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HE |
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HE |
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Return |
|
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Return |
|
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550 |
|
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100 |
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350 |
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100 |
<![if ! IE]> <![endif]>35 |
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<![if ! IE]> <![endif]>800 |
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<![if ! IE]> <![endif]>145 |
65 |
100 |
80 |
80 |
80 |
80 |
65 |
|
1 |
|
2 |
3 |
4 |
5 |
6 |
|
360
55 |
Connections:
1.District heating (DH) supply
2.District heating (DH) return
3.Heating (HE) return
4.Heating (HE) supply
5.Domestic hot water (DHW)
6.Domestic kold water (DCW)
| <![if ! IE]> <![endif]>55 |
Wand |
|
<![if ! IE]> <![endif]>360 |
von oben |
|
8 | © Danfoss | Produced by Danfoss Redan A/S | 2017.01 |
VI.JV.R1.02 |
Instructions for installation and use |
|
Akva Lux II VXi, VXi Solo HWP, VXi Solo H |
|
|
||||||||
5. DIAGRAM, DIMENSIONAL SKETCHES, EXAMPLES - VXI SOLO HWP |
||||||||||||
|
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|
|
1 Plate heat exchanger HE |
8 |
Circulation pump |
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|
Supply limit |
|
4 Differential pressure controller with |
11 |
Safety valve HE, 3 bar ½” |
||||
Cylinder |
|
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|
|
flow limitation AVPB-F |
13 |
Thermometer |
|
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5 |
Strainer |
15 |
Manometer |
||
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7A Ball valve ¾ ET/ET, 120 mm |
16 |
Expansion vessel 12 L |
|
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for thermometer/manometer |
23 |
Sensor pocket ½”/10x1, plug |
|
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7B Ball valve ¾ IT/IT, for thermometer |
|
M10 for heat meter |
|
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Cylinder supply |
|
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24 |
Fitting piece for heat meter |
|||
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3/4” x 110 mm |
||||
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25 |
Danfoss Controller ECL 310/ |
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A337 |
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26 |
Outdoor sensor, ESMT |
|
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|
|
Cylinder return |
|
|
27 |
Danfoss sensor, ESMC |
|||
|
|
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|
29 |
Danfoss actuator HE, AMV 150 |
||||
DH |
|
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HE |
Supply |
|
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Supply |
DH |
|
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HE |
Return |
|
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|
Return |
|
|
550 |
|
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|
100 |
|
350 |
|
|
100 |
<![if ! IE]> <![endif]>35 |
|
360 |
Connections: |
|||
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|||
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1. District heating (DH) supply |
||
|
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|
|
2. District heating (DH) return |
||
|
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|
3. Heating (HE) return |
||
|
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|
4. Heating (HE) supply |
||
|
|
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|
5. Cylinder supply |
||
|
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6. Cylinder return |
||
|
|
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|
|
|
<![if ! IE]> <![endif]>800 |
|
|
|
|
|
|
|
|
|
|
|
|
<![if ! IE]> <![endif]>145 |
|
|
|
|
|
65 |
100 |
80 |
80 |
80 |
80 |
65 |
|
|
55 |
|
|
|
1 |
2 |
3 |
4 |
|
5 |
6 |
|
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|
<![if ! IE]> <![endif]>55 |
Wand |
|
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|
|
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|
|
|
|
|
|
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|
|
|
<![if ! IE]> <![endif]>360 |
|
|
|
|
|
|
|
von oben |
|
|
|
|
|
|
|
|
|
|
VI.JV.R1.02 |
© Danfoss | Produced by Danfoss Redan A/S | 2017.01 | 9 |
Instructions for installation and use Akva Lux II VXi, VXi Solo HWP, VXi Solo H
5. DIAGRAM, DIMENSIONAL SKETCHES, EXAMPLES - VXI SOLO H
1 |
Plate heat exchanger HE |
23 |
Sensor pocket ½”/10x1, plug M10 for heat |
5 |
Strainer |
|
meter |
7A |
Ball valve ¾ ET/ET, 120 mm for thermo./Mano. |
24 |
Fitting piece for heat meter |
7B |
Ball valve ¾ IT/IT, for thermometer |
|
3/4” x 110 mm |
8 |
Circulation pump |
25 |
Danfoss Controller ECL 310/A230 |
11 |
Safety valve HE, 3 bar ½” |
26 |
Outdoor sensor, ESMT |
13 |
Thermometer |
27 |
Danfoss sensor, ESMC |
15 |
Manometer |
29 |
Danfoss actuator HE, AMV 150 |
16 |
Expansion vessel 12 L |
30 |
Pressure independent control valve with |
|
|
|
integrated flow limiter Danfoss AVQM |
DH |
|
|
|
|
|
Supply |
|
|
|
|
|
DH |
|
|
|
|
|
Return |
|
|
|
|
|
|
|
|
|
550 |
|
| <![if ! IE]> <![endif]>35 |
100 |
|
|
350 |
100 |
|
|
|
|
|
|
| <![if ! IE]> <![endif]>800 |
|
|
|
|
|
| <![if ! IE]> <![endif]>145 |
|
|
|
|
|
|
65 |
100 |
80 |
80 |
|
|
1 |
|
2 |
3 |
4 |
| <![if ! IE]> <![endif]>55 |
|
|
|
|
Wand |
| <![if ! IE]> <![endif]>360 |
|
|
|
|
|
HE
Supply
HE
Return
Connections:
1. District heating (DH) supply
2. District heating (DH) return
3. Heating (HE) return
4. Heating (HE) supply
von oben
10 | © Danfoss | Produced by Danfoss Redan A/S | 2017.01 |
VI.JV.R1.02 |
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