Danfoss Akva Vita II TD, Akva Lux II TD, Akva Les II TD, Akva Lux II S, Akva Les II S Instructions For Installation And Use Manual

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MAKING MODERN LIVING POSSIBLE

Danfoss District Energy

Akva Vita II TD & S

Akva Lux II / Akva Les II TD & S

Instructions for installation and use

Instructions for installation and use TD & S substations

Akva Vita II TD Akva Lux II TD

Akva Les II TD

Akva Vita II S Akva Lux II S

Akva Les II S

1. Contents

1. Contents ................................................................................................................................................................................................................................................2

2. Product introduction, Akva Vita II TD ..........................................................................................................................................................................................3

3. Product introduction, Akva Lux II TD / Akva Les II TD ...........................................................................................................................................................4

4. Product introduction, Akva Vita II S ............................................................................................................................................................................................5

5. Product introduction, Akva Lux II S / Akva Les II S .................................................................................................................................................................6

6. Instructions for use, General ..........................................................................................................................................................................................................7

7. Instructions for use, Initial adjustment / setting .....................................................................................................................................................................8

8. Installation instructions, Safety and Handling ........................................................................................................................................................................9

9. Installation instructions, GETTING STARTED ......................................................................................................................................................................... 10

10. Installation instructions, general ............................................................................................................................................................................................... 11

11. Installation instructions - specially for S substations ......................................................................................................................................................... 12

12. Installation instructions - recirculation connection ........................................................................................................................................................... 13

13. Adjustment and commissioning, Akva Vita II TD ................................................................................................................................................................. 14

14. Adjustment and commissioning, Akva Lux II TD & Akva Les II TD ................................................................................................................................. 15

15. Adjustment and commissioning, Akva Vita II S .................................................................................................................................................................... 16

16. Adjustment and commissioning, Akva Lux II S & Akva Les II S ....................................................................................................................................... 17

17. Adjustment and commissioning of S substations, heating circuit ................................................................................................................................18

18. Operation and maintenance ....................................................................................................................................................................................................... 20

19 Troubleshooting .............................................................................................................................................................................................................................. 22

20. EU Declaration of Conformity ..................................................................................................................................................................................................... 24

21. Commissioning certicate ........................................................................................................................................................................................................... 25

DKDHR VI.GP.U2.02 Danfoss District Energy

Instructions for installation and use TD & S substations

2. Product introduction, Akva Vita II TD

DHW

DCW

DH. SUPPLY

DH. RETURN

(By-pass) (factory connection)

Principal components

Plate heat exchanger, brazed, domestic hot water

1. Domestic hot water controller PM2+P

2. Bypass thermostat, Danfoss FJVR

3. Dierential pressure controller, AVPL

4. Safety valve

5. Fitting piece for meter

6. Thermometer, DHW

7. Dirt strainer

8. Sensor pocket

9. White-painted cover

13.

Filter on cold water supply

The unit has been prepared for recirculation.

Fitting set for recirculation connection available as extra equip

ment

Standard item number

Akva Vita II TD H04.393.001 Akva Vita II TD with cover H04.393.001K

Accessories available as extra equipment (mounting on site)

Recirculation pipe set - VVS no. 374976.810 For systems that feature DHW recirculation.

Plate heat exchanger, domestic hot water, type Danfoss XB06H-1 Dierential pressure controller, Danfoss AVPL 0.1–0.25 bar Dirt strainer, REDAN, embedded in T-piece Non-return valve Ball valve Safety valve, domestic hot water, 10 bar Thermometer Pressure outlet 1/2" Sensor pocket Fitting piece for meter 3/4" x 110 x 165 mm DHW controller, PM2+P Danfoss FJVR for by-pass/circulation

HE SUPPLY

HE RETURN

550

32580

520

1 2 3 4 5 6

310

45 65 65 65130100

Top view

Wall

Danfoss Expansion Unit - VVS no. 374972.820. The expansion unit is available as extra equipment for systemswhere a oor drain is to be avoided. (Must not be used in systems with domestic hot water recirculation).

Booster set/pressure intensier - VVS no. 374994.820.

13C

The booster set can be connected as extra equipment in areaswith low district heating dierential pressure.

1” Fitting set for meter (max. 130 mm) - VVS no. 374929.918 For meters with 1” connectors.

Danfoss District Energy VI.GP.U2.02 DKDHR

2 Plate heat exchanger, domestic hot water, type Danfoss XB06H-1 4 Differential pressure controller, Danfoss AVPL 0.1–0.25 bar 5 Dirt strainer, REDAN, embedded in T-piece 6 Non-return valve 7 Ball valve 12 Safety valve, domestic hot water 10 bar 13 Thermometer 14 Pressure outlet 1/2" 23 Sensor pocket 24 Fitting piece for meter, 3/4" x 110/165 mm 38 Domestic hot water controller, Danfoss PTC2 + P 3,0 40 Danfoss FJVR for by-pass/circulation

-----------------------------61 Circulation pipe (not part of the delivery) 62 Non-return valve (not part of the delivery) 64 Pump, DHW recirc. (not part of the delivery)

HE RETURN

HE SUPPLY

(factory connection)

DHW

DCW

DH. RETURN

DH. SUPPLY

DHW RECIRC

Instructions for installation and use TD & S substations

3. Product introduction, Akva Lux II TD / Akva Les II TD

535

32572,5

535

618

37,5 100 130 65 65 65

285

Principal components

Plate heat exchanger, brazed, domestic hot water

1. Domestic hot water controller, PTC2+P

2. Bypass thermostat, Danfoss FJVR

3. Dierential pressure controller, AVPL

4. Safety valve

5. Fitting piece for meter

6. Thermometer, hot water

7. Dirt strainer

8. Sensor pocket

9. White-painted cover

13.

Filter on cold water supply

The unit has been prepared for recirculation.

Fitting set for recirculation connection is available as extraequipment.

Standard item number

Akva Lux II TD 26 H05.393.001 Akva Lux II TD 26 with cover H05.393.001K Akva Lux II TD 40 H05.393.002 Akva Lux II TD 40 with cover H05.393.002K

Akva Les II TD 60+ H05.393.006 Akva Les II TD 60+ with cover H05.393.006K

Accessories available as extra equipment (mounting on site)

Recirculation pipe set - VVS no. 374976.810 For systems that feature domestic hot water recirculation.

Danfoss Expansion Unit - VVS no. 374972.820. The expansion unit is available as extra equipment for systems where a oor drain is to be avoided. (Must not be used in systems with domestic hot water recirculation).

13C

Booster set/pressure intensier - VVS no. 374994.820. The booster set can be connected as extra equipment in areas with low district heating dierential pressure.

1” Fitting set for meter (max. 130 mm) - VVS no. 374929.918 For meters with 1” connectors.

DKDHR VI.GP.U2.02 Danfoss District Energy

Instructions for installation and use TD & S substations

4. Product introduction, Akva Vita II S

550

DHW

DCW

DH. SUPPLY

(factory connection)

2 Plate heat exchanger, domestic hot water, type Danfoss XB06H-1 4 Differential pressure controller, Danfoss AVPL 0.1-0.25 bar 5 Dirt strainer, REDAN, embedded in T-piece 6 Non-return valve 7 Ball valve 8 Pump, Wilo Smart 15/6 -130 230V or Grundfos Alpha2 L 12 Safety valve, domestic hot water 10 bar 13 Thermometer 14 Pressure outlet 1/2" 17 Air vent 23 Sensor pocket 24 Fitting piece for meter, 3/4" x 110/165 mm 30 Redan Thermostat, kvs 1.2 38 Domestic hot water controller, PM2+P 40 Danfoss FJVR for by-pass/circulation 43 Blind plate

RADIATOR HE SUPPLY

FLOOR HE SUPPLY

520

310

254

451

1 2 3 4 5 6

45 65 65 65130100

138

32580

Top view

DH. RETURN

Principal components

Plate heat exchanger, brazed, domestic hot water

1. Domestic hot water controller PM2+P

2. Bypass thermostat, Danfoss FJVR

3. Dierential pressure controller, AVPL

4. Safety valve

5. Fitting piece for meter

6. Thermometer, ‹ oor heating, › thermometer, domestic hot water

7. Dirt strainer

8. Sensor pocket

9. Pump, Wilo Yonos PARA

10. Thermostat

11. Air valve

12. White-painted cover

13.

Filter on cold water supply

Non-return valve - insert

The substation has been prepared for recirculation.

Fitting set for recirculation connection is available as extra

Standard item number

Akva Vita II S A14.393.001 Akva Vita II S with cover A14.393.001K

FLOOR HE RETURN

RADIATOR HE RETURN

218.5

340.5

Accessories available as extra equipment (mounting on site)

Recirculation pipe set - VVS no. 374976.810 For systems that feature domestic hot water recirculation.

Danfoss Expansion Unit - VVS no. 374972.820. The expansion unit is available as extra equipment for systems where a oor drain is to be avoided.

(Must not be used in systems with domestic hot water recirculation).

Booster set/pressure intensier - VVS no. 374976.850. The booster set can be connected as extra equipment in areas with low district heating dierential pressure.

1” Fitting set for meter (max. 130 mm) - VVS no. 374929.918 For meters with 1” connectors.

Danfoss District Energy VI.GP.U2.02 DKDHR

535

618

535

618

32572,5

285

37,5 100 130 65 65 65

Instructions for installation and use TD & S substations

5. Product introduction, Akva Lux II S / Akva Les II S

DHW

DHW CIRC

DCW

DH SUPPLY

DH. RETURN

(By-pass) (factory connection)

Principal components

Plate heat exchanger, soldered, domestic hot water

1. Domestic hot water controller, PTC2+P

2. Bypass thermostat, Danfoss FJVR

3. Dierential pressure controller, AVPL

4. Safety valve

5. Fitting piece for meter

6. Thermometer, ‹ oor heating, › thermometer, domestic hot water

7. Dirt strainer

8. Sensor pocket

9. Pump – Grundfos Alpha2

10. Thermostat

11. Air valve

12. White-painted cover

13.

Filter on domestic cold water supply

Non- return valve, insert

The substation has been prepared for recirculation.

Fitting set for recirculation connection is available as extra equipment.

Standard item number

Akva Lux II S 26 A15.393.001 Akva Lux II S 26 with cover A15.393.001K Akva Lux II S 40 A15.393.002 Akva Lux II S 40 with cover A15.393.002K

Akva Les II S 60+ H05.393.006 Akva Les II S 60+ with cover H05.393.006K

Plate heat exchanger, domestic hot water, type Danfoss XB06H-1 Dierential pressure controller, Danfoss AVPL 0.1-0.25 bar Dirt strainer, REDAN, embedded in T-piece Non-return valve Ball valve Pump, Grundfos Alpha2 L 15–60 130 230V Safety valve, domestic hot water 10 bar Thermometer Pressure outlet 1/2" Air vent Sensor pocket Fitting piece for meter, 3/4" x 110/165 mm Redan Thermostat, kvs 1.2 Domestic hot water controller, Danfoss PTC2 + P 3,0 Danfoss FJVR for by-pass/circulation Blind plate

Circulation pipe (not part of the delivery) Non-return valve (not part of the delivery) Pump, DHW recirc. (not part of the delivery)

RADIATOR HE SUPPLY

FLOOR HE SUPPLY

FLOOR HE RETURN

RADIATOR HE RETURN

72,5

284

481

37,5 100 130 65 65 65

138

285

325

206

333

Accessories available as extra equipment (mounting on site)

Recirculation pipe set - VVS no. 374976.810 For systems that feature domestic hot water recirculation.

Danfoss Expansion unit - VVS no. 374972.820. The expansion unit is available as extra equipment for systems where a oor drain is to be avoided. (Must not be used in systems with domestic hot water recirculation).

Booster set/pressure intensier - VVS no. 374976.850. The booster set can be connected as extra equipment in areas with low district heating dierential pressure.

1” Fitting set for meter (max. 130 mm) - VVS no. 374929.918 For meters with 1” connectors.

DKDHR VI.GP.U2.02 Danfoss District Energy

Instructions for installation and use TD & S substations

6. Enduser instructions, General

Instructions

Please read these instructions carefully before installing and commissioning 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 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 qualied and authorised personnel (both plumbing and electrical work). Once the station has been installed and is operating, there is nor- mally no need to alter the settings or other functions. The district heating substation is very reliable and easy to operate.

If necessary, you can change the temperature settings as described on page 8. For more detailed information about the substation, see the sections concerning installation and commissioning.

Description

These instructions apply to two substation types (TD and S) – which are both tted with an instantaneous water heater and designed for direct connection to the district heating supply.

TD substations are tted with a dierential pressure controller that maintains a constant pressure in the radiators. The supply temperature to the radiators is always identical to the district heating supply temperature. The room temperature is adjusted solely using the radiator thermostats.

S substations are tted with a dierential pressure controller that maintains a constant pressure in the heating circuit(s). The supply temperature to the oor heating is regulated using the thermostat in the substation. S substations are also tted with a pump. In rooms with oor heating, the temperature is regulated using the oor heating thermostat for the room in question. In rooms with radiators, the temperature is regulated using the radiator thermostats. Alternatively, the heating circuits can be regulated using fully automatic Danfoss ECL weather compensation equipment (not standard).

We recommend regular inspections of the substation - 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 dierence between the supply and return temperature of the district heating water – has a signicant eect on the overall energy economy. Therefore, it is important to focus on the supply and return temperature in the heating system. The dierence should typically be 30–35°C in systems that operate with radiators. In systems that feature oor heating, the dierence is typically 5–10°C. In these systems, it is important that the supply temperature does not exceed 35°C. Please note that a low district heating return temperature is directly dependent on the return temperature from the heating/oor heating circuit and the return temperature of the domestic hot water recirculation (in systems with domestic hot water recirculation). It is therefore important to focus on these return temperatures.

Cooling from the water heater alone:

During tapping, the level of cooling will typically be 30–35°C. When domestic hot water is not being tapped, it is completely normal for the return temperature from the water heater to rise slightly. In this situation, the district heating meter will register very modest consumption as the volume of water is very small. On substations with recirculation, the calorie meter registers the heat loss in the recirculation pipe.

Irregularities

When reading the meter, check all joints and connections for leaks.

If you identify any irregularities/leaks, contact your professional provider for assistance. Check the troubleshooting section before contacting your professional provider.

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 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 substation and from outow 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 re, leaks or other hazards, immediately shut o all sources of energy to the substation, if possible, and call for appropriate assistance. If the domestic hot water is discoloured or malodorous, shut o all ball valves on the substation notify all users and call for professional assistance without delay.

Danfoss District Energy VI.GP.U2.02 DKDHR

Instructions for installation and use TD & S substations

7. Enduser instructions, Initial adjustment/setting

Domestic hot water control

Danfoss PM2+P controller (Fig. 1) for domestic hot water. Set the DHW temperature by turning the adjuster lever towards red (hotter) or blue (colder). Start by turning the lever clockwise – until the pin is opposite the blue dot. Then turn the lever counter-clockwise until the tempera- ture of the tap water is approx. 48°C during normal tapping ow (7–8 litres per min.). The temperature must never exceed 55°C to prevent limescale deposits building up in the water heater.

Fig. 1

Danfoss PTC2+P controller (Fig. 2) for domestic hot water. Set the DHW temperature by moving the adjuster lever towards “+” (hotter) or “-” (colder). Start by turning the lever clockwise – until it stops/until you cannot turn it any further. Then turn the lever counter-clockwise until the temperature of the tap water is approx. 48°C during normal tapping ow (7–8 litres per min.). The temperature must never exceed 55°C to prevent limescale deposits building up in the water heater.

Bypass or circulation thermostat

Thermostat (Fig. 3) that keeps the branch pipe warm in the summer or regulates the circulation temperature if domestic hot water recirculation has been established in the hot water system. The thermostat should initially be set to position 3.

Heating ciruit, Dierential Pressure Controller

The dierential pressure controller (Fig. 4) reduces the high, uctuating pressure in the district heating network to a constant operating pressure over the unit. The dierential pressure controller is initially set by the plumber in connection with the commissioning of the substation. If disruptions to the operation occur: noise in the radiator thermostats or poor regulation capacity, it may be necessary to reset the dierential pressure controller to a lower operating pressure. We suggest that you contact your local plumber for assistance.

Regulation of the supply temperature to the heating circuit

TD substations: The temperature cannot be regulated.

S substations: The supply temperature to the substation can be set by

adjusting the thermostat T°C (Fig. 5). The thermostat will be set by the plumber in connection with the commissioning, but it may be necessary to adjust it subsequently depending on the outdoor temperature. Indicative scale setting: (the scale is on top of the lever) Pos. 4 ≈ 50°C 5 ≈ 60°C 6 ≈ 70°C The setting values may vary depending on the operating conditions. It is important to set the supply temperature to the radiators as low as possible. Use the radiator thermostats to regulate the room temperature.

NB! For houses that are heated exclusively with oor heating. The supply temperature should typically be set to approx. 30–35°C, which corresponds to pos. 2–2.5 on the thermostat (guiding value). The supply temperature must never exceed 40°C. (In addition, ALWAYS refer to the instructions from the oor supplier)

Fig. 2

Fig. 3

Fig. 4

Fig. 5

Fig. 6

Alternatively, S substations can be controlled by an electronic control-

ler, Danfoss ECL (g. 6). See the enclosed documentation for same.

Pump (only on S substations)

S substations are factory tted with a pump (g. 7). The pump setting is established in connection with the commissioning. Generally speaking, this setting is not to be altered. If it should nevertheless be necessary to change the pump setting, see the section concerning pumps in the installation and commissioning sections regarding the individual products. In the summer, you can switch o the power to the pump at the mains if you want to save electricity by not heating your home. Start-up and venting – see the installation and commissioning sections, if necessary.

DKDHR VI.GP.U2.02 Danfoss District Energy

Fig. 7

Instructions for installation and use TD & S substations

8. Installation instructions, 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 qualied and authorised personnel (both plumbing and electrical work).

Heat 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 exclusively to heat water. The substation must not be used to heat other media. The substation is to be connected to the household piping in a frostfree room, where the temperature does not exceed 50°C, and where the relative humidity is not higher than 80%. The substation must not be covered, bricked in or otherwise cut o 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.

Connection

It must be possible to cut o all energy sources to the unit – including electrical connections – at all times.

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 substation and from outow of the medium. 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 re, leaks or other hazards, immediately shut o all energy sources to the assistance. If the

domestic hot water all ball valves on the substation, notify all users and call professional assistance without delay.

Warning about 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.

substation

, if possible, and call appropriate

is discoloured or malodorous, shut o

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 (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 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 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.

NB! - Tightening of connections

Before lling the substation with water, ALL pipe connections MUST be retightened, as vibrations during transport may have caused leaks. Once the substation has been lled and the system is hot, ALL pipe connections MUST be retightened once more. DO NOT OVERTIGHTEN THE PIPE CONNECTIONS – see page 11, “Test & connections”.

Handling

We recommend that you wear suitable safety footwear while handling and installing the substation.

Danfoss District Energy VI.GP.U2.02 DKDHR

+ 19 hidden pages

Danfoss Akva Vita II TD, Akva Lux II TD, Akva Les II TD, Akva Lux II S, Akva Les II S Instructions For Installation And Use Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1. Contents

8. Installation instructions, Safety and Handling