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Mounting and Installation Guide
Akva Lux II TDv substation
Fully insulated district heating substation for low-temperature district heating and instantaneous domestic hot water.
Akva Lux II TDv
Fully insulated district
heating substation for
district heating and in-
stantaneous DHW
districtenergy.danfoss.com
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Table of Contents
Related Manuals for Danfoss Akva Lux II TDv
Summary of Contents for Danfoss Akva Lux II TDv
- Page 1 Mounting and Installation Guide Akva Lux II TDv substation Fully insulated district heating substation for low-temperature district heating and instantaneous domestic hot water. Akva Lux II TDv Fully insulated district heating substation for district heating and in- stantaneous DHW districtenergy.danfoss.com...
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Page 2: Table Of Contents
11.0 Domestic hot water ..........................................16 12.0 Maintenance............................................17 13.0 Troubleshooting ........................................... 19 14.0 EU Declaration of conformity ......................................22 15.0 Commissioning Certificate ........................................ 23 16.0 Guidelines for water quality in Danfoss brazed heat exchangers ........................24 DKDHR 145X2085 / AQ428255318526en-010101 Danfoss District Energy... -
Page 3: Installation Instructions, Safety And Handling
Instructions Akva Lux II TDv INSTALLATION INSTRUCTIONS, SAFETY AND HANDLING Instructions Please read these instructions carefully before installing and comis- sioning this substation. The manufacturer accepts no liability for loss or damage resulting from failure to comply with these instructions for use. - Page 4 Akva Lux II TDv INSTALLATION INSTRUCTIONS, SAFETY AND HANDLING Reach All products of the Akva Lux II TDv series comply with the provisions of the REACH regulation. We are therefore obliged to inform our customers about the presence of substances according to the SVHC candidate list, if they are present.
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Page 5: Product Introduction
The Akva Lux II TDv is also equipped with a zone valve RA-C and thereby prepared for fitting of a thermal actuator TWA-Q, which enables connection to an electronic programmable room thermostat. -
Page 6: Getting Started - Quick Guide For Easy Start-Up
GETTING STARTED AKVA LUX II TDv If the household piping system features domestic hot water recirculation, the substation must be connected to the recirculation system, - accord- ing to instructions on page 11. -
Page 7: Main Components / Connections
Instructions Akva Lux II TDv 5. MAIN COMPONENTS / CONNECTIONS- AKVA LUX II TDv Plate heat exchanger DHW Differential pressure controller AVPL Strainer PTC2+P Controller Danfoss FJVR thermostat for bypass/circulation Zone valve RA-C 145H4156 145H4746 Accessories Code No. Cover, white painted H410 x W310 x D210... -
Page 8: Diagram, Dimensional Sketch, Example
Instructions Akva Lux II TDv 6. DIAGRAM & DIMENSIONAL SKETCH, EXAMPLE - AKVA LUX II TDv 2. Plate heat exchanger DHW 4. Differential pressure controller AVPL 5. Strainer 38. DHW controller PTC2+P 40. Danfoss FJVR for bypass/circ. 52. Zone valve RA-C DN15... -
Page 9: General
Insulation front The insulation front panel on the Akva Lux II TDv substations can be removed without using tools. Take hold of the air duct in the top and bottom of the front insulation section and pull carefully forward until the front insulation section releases from the rear section. -
Page 10: Recirculation
35 °C. If the circulation pump (outside the unit) is switched off for a longer period, it is to be recommended that the Danfoss FJVR thermostat is closed during the same period. 10 DKDHR... - Page 11 Instructions Akva Lux II TDv 8. RECIRCULATION Fig. 1 Demount plugs (6 mm Allen key) from controller. Fig. 2 Mount nipple A in controller. Fig. 1 Fig. 2 Fig. 3 Mount circulation hose end B1 in controller. Fig. 4 Unscrew the 3 screws on locking rail.
- Page 12 Instructions Akva Lux II TDv Fig. 9 Demount capillary tube from T-piece. Fig. 10 Mount m8 x 1 screw plug F in T-piece. Fig. 11 Demount capillary tube from T-piece as shown. Fig. 9 Fig. 10 Fig. 12 Mount support rail and tighten screws D with your screwdriver, as shown.
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Page 13: Safety Set
Please note that the safety kit shown can be used on different unit types, and that there may therefore be components/pipe pieces that should not be used on the Akva Lux II TDv. Not to be used on Akva Lux II TDv The safety kit is mounted on the cold water inlet, as shown in the photo on the right. -
Page 14: Adjustment And Commissioning
During inspection and adjustment The insulation front panel on the Akva Lux II TDv substations can be removed without using tools. Take hold of the air duct in the top and bottom of the front insulation section and pull carefully forward until the front insulation section releases from the rear section. - Page 15 The room temperature is adjusted via the thermostat heads on the radiators. Zone valve RA-C / thermal actuator TWA-Q The Akva Lux II TDv is equipped with zone valve RA-C, which enables connection to an electronic programmable room thermostat. Please note that a TWA-Q thermal actuator must be mounted on the zone valve prior to connection to an electronic programmable room thermostat.
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Page 16: Domestic Hot Water
Fig. 2 As a standard the substation is equipped with a bypass thermostat, Danfoss FJVR, so that when water is tapped, the water heater immediately starts to produce hot water. We recommend setting of the thermostat in pos.3. If you have to wait a long time (i.e. more than 20 sec.) for hot water, it may be necessary to set the thermostat... -
Page 17: Maintenance
If rinsing with clean water is not sufficient, the exchanger can also be cleaned by circulating a cleaning agent approved by Danfoss (e.g. Kaloxi or Radiner Fl cleaning fluid) through the exchanger. Both these cleaning fluids are environmentally friendly and can be disposed off through the standard sewer system. - Page 18 Instructions Akva Lux II TDv 12. MAINTENANCE SCHEDULE (recommendations) Interval Maintenance work Comments If you identify a leak, replace the gaskets and retighten Check all connections for leaks the pipe connections Check that the safety valve on the cold water Check the functionality by turning the lever on the safety supply is functioning correctly.
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Page 19: Troubleshooting
Instructions Akva Lux II TDv 13. TROUBLE SHOOTING - HEATING Fundamental In the event of disruptions to operation, you should fundamentally - before commencing the actual troubleshooting - check whether: • the system is correctly connected • there is a power supply to the system - pump and automatics •... - Page 20 Dirt strainer in the district heating sup- Clean the dirt strainer. ply line clogged. Defective DHW controller. Check controller settings. You may con- tact Danfoss Redan A/S for further infor- mation. Replace sensor. Defective sensor. (PTC2) Hot water temeprature too low As above.
- Page 21 Instructions Akva Lux II TDv Problem Possible cause Solution Calified heat exchanger Clean heat exchanger with acid solution or replace heat exchanger Poor cooling Short-circuited heat exchanger Replace heat exchanger Discoloured water (for a longer period) Short-circuited heat exchanger Replace heat exchanger...
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Page 22: Eu Declaration Of Conformity
Instructions Akva Lux II TDv 14. EU DECLARATION OF CONFORMITY 22 DKDHR 145X2085 / AQ428255318526en-010101 Danfoss District Energy... -
Page 23: Commissioning Certificate
Instructions Akva Lux II TDv 15. COMMISSIONING CERTIFICATE Commissioning certificate The substation is the direct link between the district heating supply network and the household piping system. All supply pipes and the pipes in the household piping system must be checked and rinsed before commissioning. Once the system has been filled with water, all pipe connections must be retightened before performing pressure test for leaks. -
Page 24: Guidelines For Water Quality In Danfoss Brazed Heat Exchangers
Use is not recommended * Hardness ration limits defined per experience and internal tests in Danfoss laboratory ** In case of three or more parameters evaluated with o consultancy is needed with Consultant for Corrosion & Microbiology or BU HHE Representative... - Page 25 Instructions Akva Lux II TDv 25 25 Danfoss District Energy 145X2085 / AQ428255318526en-010101 DKDHR...
- Page 26 Instructions Akva Lux II TDv 26 DKDHR 145X2085 / AQ428255318526en-010101 Danfoss District Energy...
- Page 27 Instructions Akva Lux II TDv 27 27 Danfoss District Energy 145X2085 / AQ428255318526en-010101 DKDHR...
- Page 28 Instructions Akva Lux II TDv 28 DKDHR 145X2085 / AQ428255318526en-010101 Danfoss District Energy...