Danfoss Akva Lux II TDP-F Operating instructions

Brand: Danfoss

Model: Akva Lux II TDP-F

Category: Water heaters & boilers

Type: Operating instructions

Danfoss District Energy

MAKING MODERN LIVING POSSIBLE

Akva Lux II TDP-F

Instructions for installation and use

1.0 Contents

Type 004U8264 Type 0048089 Cover for wall-mounting

Cover for recess mountingType 0048044

Instructions for installation and use Akva Lux II TDP-F substations

DKDHR VI.HE.A1.02 Danfoss District Energy

1.0 Contents ....................................................................................................................................................................................................................................... 2

2.0 Product introduction ............................................................................................................................................................................................................... 3

5.1 Akva Lux II TDP-F, fully insulated - Type A (004U8264) .......................................................................................................................................3

5.2 Akva Lux II TDP-F (with bypass thermostat mounted before heat meter) - Type 004U8089 ................................................................ 4

5.3 Akva Lux II TDP-F (with bypass thermostat mounted after heat meter) - Type 004U8044 ...................................................................5

3.0 Dimensional sketches / Connections ................................................................................................................................................................................ 6

4.0 Enduser instructions, General .............................................................................................................................................................................................. 7

5.0 Enduser instructions, initial adjustment/setting ..........................................................................................................................................................8

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

7.0 Installation instructions, Getting started ...................................................................................................................................................................... 10

8.0 Installation instructions, general ..................................................................................................................................................................................... 11

9.0 Installation instructions, recirculation connection ................................................................................................................................................... 14

9.1 Installation instructions - recirculation connection - Circulation set 1 - 004U8400 .............................................................................. 15

9.2 Installation instructions - recirculation connection - Circulation set 2 - 004U8401 .............................................................................. 20

9.3 Installation instructions - recirculation connection - Circulation set 3 - 004U8403 .............................................................................. 21

9.4 Installation instructions - recirculation connection - Circulation set 4 - 004U8405 .............................................................................. 24

10.0 Adjustment and commissioning of the Akva Lux II TDP-F variants .................................................................................................................... 26

11.0 Flow regulator ........................................................................................................................................................................................................................ 28

12.0 Circulation pump - DHW .................................................................................................................................................................................................... 29

13.0 Operation and maintenance ............................................................................................................................................................................................ 30

13.1 Maintenance schedule (recommendations) ..................................................................................................................................................... 31

14.0 Trouble shooting ................................................................................................................................................................................................................... 32

14.1 Troubleshooting - Heating ....................................................................................................................................................................................... 32

14.2 Troubleshooting - Domestic hot water ................................................................................................................................................................ 33

15.0 EU Declaration of Conformity ...................................................................................................................................................................................... 34

16.0 Commissioning Certicate ................................................................................................................................................................................................ 35

2 Plate heat exchanger, DHW

4 Dierential pressure controller

5 Dirt strainer

6 Non-return valve

17 Air vent

23 Sensor pocket for heat meter ½“

24 Fitting piece for heat meter, ¾” x 110 mm

38 PTC2+P controller

40 Danfoss FJVR thermostat for bypass/circulation

52 Zone valve

60 Fitting piece for DCW meter, 3/4” x 80 mm

----------------------------------------------------------------

Options:

7 Ball valve

40A Connection for circulation

52A Thermal actuator Danfoss TWA-A NC

53 Room thermostat Danfoss TP 7000

63 Complete safety valve set incl. ball valve 60 mm

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

2.0 Product introduction

5.1 Akva Lux II TDP-F, fully insulated - Type (004U8264)

2 Plate heat exchanger DHW

4 Dierential pressure controller

5 Dirt strainer

6 Non-return valve

17 Air vent

23 Sensor pocket for heat meter

24 Fitting piece for heat meter

38 PTC2+P controller

40 Thermostat for bypass/circulation

52 Zone valve

60 Fitting piece for DCW meter

Please note that the ball valves are not part of

the delivery and must be mounted on site.

Please note:

Your substation may look dierent than the substation shown,

as variants with other components may be supplied.

The control function, however, is basically as stated in this

instruction manual.

Instructions for the tted components will be supplied together

with the substation.

Connections size:

DH, HE, DHW, DCW: G¾” IT

Recirc.: R½” ET

Supply

Return

DCW

DHW

DCW

Connection for circ.

Bypass

(Standard)

Room thermostat

(dly. as loose part)

Circ. (option)

*Option:

after heat meter

Supply

Return

Primary SecundaryDomestic water

DHW DCW HE

Return

Supply

Return

DCW

* Separate tting set required (see pg. 11).

Please contact your local Danfoss sales oce.

2 Plate heat exchanger, DHW

4 Dierential pressure controller

5 Dirt strainer

6 Non-return valve

17 Air vent

23 Sensor pocket for heat meter ½“

24 Fitting piece for heat meter, ¾” x 110 mm

38 PTC2+P controller

40 Danfoss FJVR thermostat for bypass/circulation

60 Fitting piece for DCW meter, 3/4” x 80 mm

----------------------------------------------------------------

Options:

7 Ball valve

40A Connection for circulation

52 Zone valve Danfoss RA-C / Actuator TWA-A NC

53 Room thermostat

63 Complete safety valve set incl. ball valve 60 mm

69 Return temperature limiter FJVR

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

5.2 Akva Lux II TDP-F (with bypass thermostat mounted before heat meter) - Type 004U8089

2 Plate heat exchanger DHW

4 Dierential pressure controller

5 Dirt strainer

6 Non-return valve

17 Air vent

23 Sensor pocket for heat meter

24 Fitting piece for heat meter

38 PTC2+P controller

40 Thermostat for bypass/circulation

60 Fitting piece for DCW meter

Please note that the ball valves are not part of the delivery and

mus be mounted on site.

Please note:

Your substation may look dierent than the substation shown,

as variants with other components may be supplied.

The control function, however, is basically as stated in this

instruction manual.

Instructions for the tted components will be supplied together

with the substation.

Connections size:

DH, HE, DHW, DCW: G¾” IT

Recirc.: R½” ET

Supply

Return

DCW

DHW

DCW

Connection for circ.

Bypass

(Standard)

Room thermostat

(dly. as loose part)

Circ. (option)

Primary SecondaryDomestic water

DHW DCW

Return

Supply

Return

DCW

2 Plate heat exchanger, DHW

4 Dierential pressure controller

5 Dirt strainer

5A Dirt strainer with plug ½”

6 Non-return valve

17 Air vent

23 Sensor pocket for heat meter ½“

24 Fitting piece for heat meter, ¾” x 110 mm

30 Return temperature limiter

38 PTC2+P controller

40 Danfoss FJVR thermostat for bypass/circulation

47 Flow limiter

52 Zone valve

54 T-piece (w. ½” plug)

59 Fitting piece for DCW meter, DHW meter 3/4” x 80 mm

----------------------------------------------------------------

Options:

7 Ball valve

40A Connection for circulation

52A Actuator TWA-A NC

63 Complete safety valve set incl. ball valve 60 mm

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

5.3 Akva Lux II TDP-F (with bypass thermostat mounted after heat meter) - Type 004U8044

2 Plate heat exchanger DHW

4 Dierential pressure controller

5 Dirt strainer

5A Dirt strainer with plug

6 Non-return valve

17 Air vent

23 Sensor pocket for heat meter

24 Fitting piece for heat meter

30 Return temperature limiter

38 PTC2+P controller

40 Thermostat for bypass/circulation

47 Flow limiter

52 Zone valve

54 T-piece with plug

59 Fitting piece for DCW, DHW meter

Please note that the ball valves are not part of the delivery

and must be mounted on site.

Please note:

Your substation may look dierent than the substation shown,

as variants with other components may be supplied.

The control function, however, is basically as stated in this

instruction manual.

Instructions for the tted components will be supplied together

with the substation.

Connections size:

DH, HE, DHW, DCW: G¾” IT

Recirc.: R½” ET

Supply

Return

DCW

DHW

DCW

Bypass

(Standard)

Primary SecondaryDomestic water

DHW DCW

Return

Supply

Return

DCW

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

3.0 Dimensional sketches / Connections

460 mm

21 3 4 5 6

65 mm 65 mm65 mm 65 mm

530 mm

65 mm 65 mm

575 mm

Type 004U8264: Akva Lux II TDP-F,

fully insulated

Connections:

0 Recirculation

1 Domestic cold water (DCW)

2 Domestic hot water (DHW)

3 Domestic cold water (DCW)

4 District heating (DH) supply

5 District heating (DH) return

6 Heating (HE) supply

7 Heating (HE) return

Depth incl. mounting plate:

115 mm

Connections size:

DH, HE, DCW, DHW: ¾” IT

Recirculation: R½” ET

Type 004U8089: Akva Lux II TDP-F

with bypass thermostat mounted

before heat meter.

Type 004U8044: Akva Lux II TDP-F

with bypass thermostat mounted

after heat meter.

Connections:

1 Domestic cold water (DCW)

2 Domestic hot water (DHW)

3 Domestic cold water (DCW)

4 District heating (DH) supply

5 District heating (DH) return

6 Heating (HE) supply

7 Heating (HE) return

Depth: 150 mm

Connections size:

DH, HE, DCW, DHW ¾” IT

Recirculation: R½” ET

21 3 4 5 6

65 mm 65 mm65 mm 65 mm

65 mm 65 mm

440 mm

575 mm

440 mm

21 3 4 5 6

575 mm

Keyholes for mounting

65 mm 65 mm65 mm 65 mm65 mm 65 mm

Type 004U8044Type 004U8089

21 3 4 5 6

65 mm 65 mm65 mm 65 mm

65 mm 65 mm

551 mm

90 mm

550 mm

491 mm

575 mm

610 mm

910 mm

460 mm

Akva Lux II TDP-F with recirculation, - in recess box

Keyholes for mounting

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

4.0 Enduser instructions, General

Instructions

Please read these instructions carefully.

The manufacturer accepts no liability for loss or damage resulting from

failure to comply with these instructions. Read and follow these instruc-

tions carefully to prevent the risk of physical injury and/or damage to

property. Exceeding the recommended operating parameters appreci-

ably 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 substation types Akva Lux II TDP-F, which

are district heating substations for direct heating for single-family,

semi-detached and terraced houses as well as ats. With one heating

circuit and instantaneous water heater for domestic hot water heating.

The Akva Lux II TDP-F, Type 004U8264 is fully enclosed in an EPP insula-

tion box as a standard.

Akva Lux II TDP-F substations are tted with a dierential pressure con-

troller that maintains a constant pressure in the heating circuit(s). 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.

The Akva Lux II TDP-F variants are designed for wall mounting and

are available as built-in variant with a recess box or as wall-mounted

variant.

The Akva Lux II TDP-F, types 004U8264 and 004U8089 are supplied

with bypass thermostat mounted before heat meter (bypass con-

sumption is registered by the heat meter).

For fully insulated Akva Lux II TDP-F, type 004U8264, please note that

a tting set can be ordered separately to enable a change of feature,

so that bypass consumption is not registered by the heat meter.

Akva Lux II TDP-F, type 004U8044 is supplied with bypass thermostat

mounted after heat meter (bypass consumption is not registered by

the heat meter).

We recommend regular inspections of the substation - ideally in con-

nection with readings of the district heating meter.

Pay special attention to any leaks and an excessively high return tem-

perature in the district heating circuit (poor cooling of the district heat-

ing 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 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

related to 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.

Warning! Hot surfaces

Parts of the substation may be very hot and can cause burn in-

juries. 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 net-

work can be up to 90°C and the operating pressure can be up

to 10 bar. This may result in a risk of scalding from touching the

substation and from outow of the medium (water/steam). Ex-

ceeding 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 profes-

sional assistance without delay.

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 situa-

tion, the district heating meter will register very modest consumption

as the volume of water is very small.

On substations with recirculation, the heat meter registers the heat

loss in the recirculation pipe.

Irregularities

When reading the meters, 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.

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

5.0 Enduser instructions, initial adjustment/setting

Domestic hot water control

Danfoss PTC2+P controller (Fig. 1) 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 should never exceed 55°C

to prevent limescale deposits building up in the water heater.

Option: Alternatively the Akva Lux TDP-F substations may be tted with a

Danfoss PM2+P controller (Fig. 1b) for domestic hot water. Set the DHW

temperature by turning the adjuster lever towards red (hotter) or blue (cold-

er). Start by turning the lever clockwise – until the pin is opposite the blue

dot. 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.

NB! The indicator of temperature setting must be positioned be-

tween the blue and red dot, otherwise the controller will shut down.

Bypass or circulation thermostat

Thermostat (Fig. 2) that keeps the branch pipe warm in the summer

or regulates the circulation temperature if domestic hot water recir-

culation has been established in the hot water system.

The thermostat should initially be set to position 3.

Heating circuit, Dierential Pressure Controller

The dierential pressure controller (Fig. 3) reduces the high, uctu-

ating pressure in the district heating network to a constant operat-

ing pressure. 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 thermo-

stats or poor regulation capacity, it may be necessary to reset the

dierential pressure controller to a lower or higher operating pres-

sure. We suggest that you contact your local plumber for assistance.

Heating circuit, temperature control

The room temperature is regulated exclusively using the radiator

thermostats.

Return temperature limiter

Return temperature limiters are used to limit the return tempera-

ture of radiators.

The return temperature limiter should be set to the required maxi-

mum return temperature, in compliance with the local demands.

Scale setting (indicative:

I = 10° C

1 = 20 °C

2 = 30 °C

3 = 40 °C

4 = 45 °C

I = 50 °C (max. temperature)

To ensure sucient cooling and proper operation the HE return

temperature must be lower than the temperature set on the ow

controller.

Fig. 1a

Fig. 2

Fig. 3

TD200AVPL

Indicator

Fig. 1b

Adjuster lever

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

Handling

We recommend that you wear suitable safety footwear while

handling and installing the substation.

6.0 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.

Read and follow these instructions carefully to prevent the risk of physi-

cal 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

qualied 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 or a water-glycol

mixture (up to 40%), 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 o 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 recom-

mended chloride content is exceeded.

Safety valve(s)

Installation of safety valve(s) must always be in compliance with local

regulations.

Noise level.

≤ 55 dB.

Storage

Before installation, the units must be stored in a dry, heated (i.e. frost-

free) 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 o all energy sources to the unit - includ-

ing electrical connections - at all times.

Potential equalization/grounding

Potential equalization is an electrical equalizing connection to se-

cure against user contact with dangerous voltage, which may occur

for example between two piping systems. Potential equalization re-

duces corrosion in heat exchangers, water heaters, district heating

substations and plumbing installations. Equalization of potentials

should be eected according to local regulations.

Warning! Hot surfaces

Parts of the substation may be very hot and can cause burn inju-

ries. 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 90°C and the operating pressure can be up to 10 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 appropri-

ate 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 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 lled and the system has been put

into operation, ALL pipe connections MUST be tightened once

more.

(Do not overtighten! - See page 11, Test and Connections)

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

7.0 Installation instructions, Getting started

Connect the substation to the household piping in accordance with

the labelling at the bottom and/or in accordance with the instruc-

tions in this manual.

If the system features DHW recirculation, a recirculation connec-

tion must be established on the substation. The circulation set

is optional equipment, which must be ordered separately and

mounted on site.

We recommend establishing recirculation BEFORE mounting the

substation on the wall.

For instructions about recirculation connection, see pages 14-25.

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.

Commissioning:

Please note that the “getting started” quick guide presupposes

that shutt-o possibility is established to and from the substa-

tion. - We recommend mounting of ball valves.

Please note that ball valves are not part of the delivery for most

types of TDP-F substations and must be ordered separately.

1. If the household piping system features domestic hot water

recirculation, the substation must be connected to the recircu-

lation system. See pages 14-25 for further information about

DHW recirculation.

2. The substation is prepared for wall mounting. Mount the sub-

station on a solid wall using two sturdy bolts, screws, expan-

sion bolts or similar.

3. Mount ball valves (not part of the delivery) on the substation

and make sure that they are closed, when connnecting them

to the household piping.

4. Mount the district heating meter (see page 11).

5. IMPORTANT! Tighten all pipe connections, as they may have

loosened during transport and handling.

6. On systems that feature a safety valve, establish a drain con-

nection in compliance with the applicable legislation.

7. Open the ball valve for the HE supply and return ow and ll the

system with water by carefully opening the ball valve for the

district heating supply ow and at the same time venting the

system. Finally, open the ball valve for the district heating return

ow. (Please note that the ball valves are not part of the delivery).

8. Check the substation and the household piping thoroughly

for leaks.

9. Pressure test the entire system for leaks in accordance with

the applicable regulations.

10. Connect pump and automatic components, if any, to the elec-

tricity supply, but do not switch on the power.

11. Heat the system and vent the radiator circuit/heating side

thoroughly on the radiators and the air valve, if any.

12. For TDP-F stations, which include zone valve and actuator, re-

member to remove the red split on the position indicator of

the actuator after installation.

13. Now switch on the pump and automatic components, if

any.

14. Finish by adjusting the substation in accordance with this

instruction manuals.

Heating and cooling of the system may cause leaks. There-

fore it may be necessary to retighten the connections in the

period after commissioning.

1111

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

8.0 Installation instructions, general

The installation, connection and maintenance of the substation must

be performed by qualied and authorised personnel.

Installation must always be performed in accordance with the ap-

plicable legislation and in compliance with these instructions.

The substation must be installed so that it is freely accessible and can

be maintained without unnecessary disruption. Lift the substation

by its mounting plate/rear section and secure it to a solid wall using

2 sturdy bolts, screws or expansion bolts positioned in the two key-

holes in the mounting plate/rear section.

Before commissioning, rinse all the pipes in the household piping

system thoroughly to remove any impurities, and check and clean

the dirt strainers in the substation.

Connect the substation to the household piping in accordance with

the labelling at the bottom and/or in accordance with the instruc-

tions in this manual.

Test and connections

Before lling the system with water, retighten all the pipe connections

because vibrations and shocks during transport and handling may

have caused leaks. Once the system has been lled with water, tighten

all the pipe connections once more before performing pressure test

for leaks. After heating of the system, check all the connections and

retighten if necessary.

Please note that the connections features EPDM rubber gaskets!

Therefore, it is important that you DO NOT OVERTIGHTEN the

union nuts. Over-tightening may result in leaks. Leaks caused by

over-tightening or failure to retighten connections are not covered

by the warranty.

Heat meter, tting pieces.

The substation is equipped with tting pieces for heat meter on

the district heating return line.

Fitting of heat meters

- Close the ball valves on the district heating and the heating

sides.

- Loosen the union nuts at both ends of the tting piece and

remove it.

- Fit the heat meter, - remember to insert gaskets.

- Mount sensor, - remember to insert gaskets.

- After mounting of heat meter remember to check and tighten

all pipe connections before commissioning the substation.

The heat meter consists of ow meter, two temperature sensors for

mounting in DH supply and return and a microprocessor calculator

for the calculation of energy consumption. On the LCD display of the

calculator the energy consumption can be read.

For Akva Lux II TDP-F, fully insulated, a cut-out in the front insula-

tion cover makes it possible to build in the calculator of the heat

meter in the font insulation, - please see photos to your right, - and

thus enable easy reading of the exact energy consumption on the

LCD display.

Please note that for Akva Lux II TDP-F, fully insulated, it is possible to

perform change of feature to enable that bypass consumption is not

registered by the heat meter. This requires a tting set, which is available

as extra equipment.

Please contact your local Danfoss sales oce for further information

and for placement of order for this.

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

Mounting of temperature sensors

As standard the heat meter is supplied with temperature sensors

for measuring the supply and return ow temperatures.

The Akva Lux II S-F at station is prepared for mounting of tem-

perature sensors with M10x1 connection (see photo to the right):

The supply ow sensor is mounted in the sensor pocket on DH

supply (pos A.)

- demount M10 plug (Pos. A)

- insert one temperature sensor in the sensor pocket

- tighten temperature sensor union nut

Mount the return ow sensor in the heat meter housing (pos. B).

Cold water meter(s), tting pieces.

The substation is equipped with tting piece(s) for cold water

meter(s).

Fitting of cold water meter(s)

- Close the ball valves on the domestic cold water and the do-

mestic hot water supply.

- Loosen the union nuts at both ends of the tting piece and

remove it.

- Fit the cold water meter, - remember to insert gaskets.

- After mounting of cold water meter remember to check and

tighten all pipe connections before commissioning the cold

water meter(s).

Hot water meter, tting piece

The substation can be equipped with tting piece for hot water

meter.

Fitting of hot water meter

- Close the ball valves on the domestic cold water and the do-

mestic hot water supply.

- Loosen the union nuts at both ends of the tting piece and

remove it.

- Fit the hot water meter, - remember to insert gaskets.

- After mounting of hot water meter remember to check and

tighten all pipe connections before commissioning the hot

water meter.

Meter display (reading of meter dials)

For easy reading of the meter display, the lower right corner of the

front insulation can easily be removed, as shown in the photo to

your right.

1313

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

Zone valve / thermal actuator TWA-A

The Akva Lux II TDP-F can be supplied with zone valve/thermal ac-

tuator TWA-A, which enables connection to an electronic program-

mable room thermostat.

The thermal actuator of the zone valve is switched on by an exter-

nal contact from the room thermostat, and starts to open or close

the valve. The actuating movement is achieved by means of an

electrically heated expansion element. When the heating current is

switched o, the actuator shuts or opens the valve.

The actuator is equipped with a visual position indicator to show

the open or closed position of the valve.

Electronic programmable room thermostat (option)

If the substation is connected to a room thermostat the tempera-

ture is controlled by the room thermostat and radiator thermostats.

Please note that the room thermostat keeps the temperature at a

constant level in the whole apartment according to the set room

parameters.

Consult additional maintenance instructions for room thermostat

for further information. It is recommended to avoid fully opened

thermostats on some radiators and fully shut-o on others. Higher

temperature at the top and lower temperature at the bottom part

of radiators means that the system operation is correct. To keep cor-

rect temperature and friendly microclimate for human beings in the

apartment, it is recommended to ensure regular airing in rooms.

Thermal actuator TWA-A

TWA-A

For Danfoss RA valves

TWA-V

For Danfoss RAV/VMT valves

TWA-L

For Danfoss RAVL valves

TWA-K

For Heimeier/MNG/Oventrop

valves with M30 × 1.5 connection,

generally as per attached drawing.

Other valves must be veried

individually to ensure correct

valve closing measurement and

valve top geometry.

TWA-D

For Danfoss RTD valves

088R0248| 15.12.2005 | Version 03

INSTRUCTIONS

TWA NC

VI.SB.H3.02 12-2005 Produced by Danfoss Industri Service 05.09 JJ-Bi.DS

*) 24 V

Class II transformer (SELV)

**) 230 V max. 3 A pre-fuse

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

Safety valve

As optional equipment the substation can be equipped with a safety

valve set.

Please note that this is not part of the delivery and must be ordered

separately and mounted on site.

Always establish a blow-o pipe from the safety valve. The blow-o

pipe must be lead to a drain in accordance with applicable legislation.

Please note that installation of safe valve set is possible only for instal-

lations with 120 mm ball valves.

See separate installation guide for mounting of safety valve set.

The safety valve set includes two dierent pipes, as it is prepared for

mounting on at stations with and without circulation set.

Illustration 1 to the right shows Akva Lux II TDP-F with safety valve

set only.

Illustration 2 to the right shows Akva Lux II TDP-F with circulation set

and safety valve set.

9.0 Installation instructions, recirculation connection

If the household piping system features domestic hot water

recirculation, the substation must be connected to the recirculation

system. The circulation set for recirculation connection is not standard

equipment. The set must be purchased as extra equipment.

We recommend establishing recirculation BEFORE mounting the

substation on the wall.

Connect the recirculation pipe from the xed household piping to

the hexagon nipple at the bottom of the substation, - see photo to

your right .

Remember always to mount circulation pump and non-return

valve to the circulation pipe and to mount safety valve on the

DCW inlet. The pump must be installed so that the pump is pumping

water towards the substation.

A safety valve must be mounted in the DCW inlet.

If a time-controlled pump is used, we recommend setting of the

circulation water temperature to approx. 35°C.

Please note that if the circulation pump (outside the substation) is

stopped for a protracted period, we recommend that the bypass

thermostat is shut o for the same period.

Please note that four circulation sets for recirculation connection are

available as optional equipment.

The four circulation sets and and control change possibilities from

bypass to DHW recirculation will be described thoroughly on pages

15 to 24.

Connection to the household recirculation pipe

1515

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

9.1 Installation instructions - recirculation connection - Circulation set 1 - 004U8400

You must always t a pump and a non-return valve to the recir-

culation pipe, with ow direction towards the substation.

A safety valve must be mounted in the DCW inlet.

Fig. 1

Remove the nipples/plugs from the domestic hot water controller

(use a 6 mm Allen key).

Fig. 2

Mount hexagon nipple A in the DHW controller (pack).

Fig. 3

Fit pipe bushing B in the DHW controller.

Fig. 4

Loosen union nuts and remove the existing capillary tube between

the bypass thermostat and the T-piece (as shown in g. 4).

Fig. 5

Plug the hole with ball C and union nut D.

Fig. 6

Fit new capillary tube E1 by means of cutting rings F and union nuts

D between the bypass thermostat and the pipe bushing B. Tighten

with single end wrench.

Fig. 7

Fit circulation hose end G1 in hexagon nipple A (do not forget gas-

ket!), and t the hose through the cut-out in the left side of the rear

insulation cover.

Fig. 8

Mount bracket H for recirculation connection on the mounting rail,

as shown, and fasten by means of two screws I.

Fig. 1 Fig. 2

Fig. 3 Fig. 4

Akva Lux II TDP-F, Type 004U8264

Fig. 7 Fig. 8

Fig. 5 Fig. 6

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

Fig. 9

Mount non-return valve J and hexagon nipple K in the pump, as

shown on the photo to your right.

Fig. 10

Loosen union nut.

Fig. 11

Turn pump motor head by 180 degrees. Tighten the union nut

again.

Fig. 12

Please note that the arrow on the back of the housing indicates

the dirction of ow. - Please note the position of the arrow as

shown in the photo to your right.

Fig. 13

Fit pump in bracket H and fasten with locknut L.

Fig. 14

Fit circulation hose end G2 in non-return valve J. (Do not forget

gasket!)

Fig. 9

Fig.10

Fig. 11 Fig.12

Fig. 13 Fig.14

Akva Lux II TDP-F, prepared for domestic hot water recirculation.Akva Lux II TDP-F with bypass-function.

1717

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

You must always t a pump and a non-return valve to the recir-

culation pipe, with ow direction towards the substation.

A safety valve must be mounted in the DCW inlet.

Fig. 1

Remove the nipples/plugs from the domestic hot water controller

(use a 6 mm Allen key).

Fig. 2

Mount hexagon nipple A in the DHW controller (pack).

Fig. 3

Fit pipe bushing B in the DHW controller.

Fig. 4

Remove the existing capillary tube and union nut from bypass

thermostat and angle piece (do not re-use).

Fig. 5

Plug the hole in the angle piece with the steel ball C and a union

nut D.

Fig. 6

Fit new capillary tube E2 in bypass thermostat by means of cutting

rings F and a union nut D. Tighten with single end wrench.

Fig. 1 Fig. 2

Akva Lux II TDP-F, Type 004U8089

Akva Lux II TDP-F, Type 004U8044

Cover for wall mounting

Cover for recess mounting

Fig. 5 Fig. 6

Fig. 3 Fig. 4

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

Fig. 7

Fit/screw hose end G1 onto the hexagon nipple A and t the other

end of the capillary tube E2 in pipe bushing B by means of a cutting

ring F and a union nut D. Tighten with single end wrench.

Fig. 8

Mount bracket H for recirculation connection on the mounting rail,

as shown, and fasten by means of two screws I.

Fig. 9

Mount non-return valve J and hexagon nipple K in the pump, as

shown in the photo to your right.

Fig. 10

Loosen union nut.

Fig. 11

Turn pump motor head by 180 degrees. Tighten the union nut

again.

Fig. 12

Please note that the arrow on the back of the housing indicates

the dirction of ow. - Please note the position of the arrow as

shown in the photo to your right.

Fig. 13

Fit pump in bracket H and fasten with locknut L.

Fig. 14

Fit circulation hose end G2 in non-return valve J. (Do not forget

gasket!)

Fig. 7 Fig. 8

Fig. 9

Fig.10

Fig. 11 Fig.12

Fig. 13 Fig.14

1919

Danfoss District Energy VI.HE.A1.02 DKDHR

Instructions for installation and use Akva Lux II TDP-F

PLEASE NOTE (only for 004U8044):

For systems with DHW recirculation the bypass thermostat

must alway be installed before the heat meter.

On substations, that are supplied with bypass thermo-

stat mounted after the heat meter (Akva Lux II TDP-F, Type

004U8044), the bypass thermostat must therefore be relocated

before the substation is prepared for recirculation, - i.e. the by-

pass thermostat must be mounted before the heat meter.

Please follow the below instructions:

Start by shutting o all connections to the substation.

First follow the instructions for Fig. 1, 2 and 3 on page 16.

Then demount 3/4” plug in T-piece (pos. A), as illustrated in g. 1.

Remove the existing capillary tube from pos. C to D. See g. 2.

Demount bypass thermostat incl. 3/4” reducer bushing from pos. B.

Unscrew 3/4” reducer bushing from bypass thermostat (the 3/4”

reducer bushing is not to be reused). See g. 3.

Mount bypass thermostat in pos A, as illustrated in g. 4.

Plug the hole in pos. B with 3/4” plug (from pos A) and gasket, as

illustrated in g. 5.

Plug the hole in pos. D with a steel ball and 6 mm union nut.

Finally follow instructions for g. 6 to 14 on pages 16 and 17.

Fig. 1

Fig. 2

Fig. 3 Fig. 4

Fig. 5

Fig. 6

DKDHR VI.HE.A1.02 Danfoss District Energy

Instructions for installation and use Akva Lux II TDP-F

9.2 Installation instructions - recirculation connection - Circulation set 2 - 004U8401

You must always t a pump and a non-return valve to the recir-

culation pipe, with ow direction towards the substation.

A safety valve must be mounted in the DCW inlet.

For recirculation connection please refer to installation instructions

for circulation set 1 - 004U8400.

Akva Lux II TDP-F, Type 004U8264

Akva Lux II TDP-F, Type 004U8089

Akva Lux II TDP-F, Type 004U8044

Cover for wall mounting

Cover for recess mounting

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Danfoss Akva Lux II TDP-F Operating instructions

Brand: Danfoss

Model: Akva Lux II TDP-F

Category: Water heaters & boilers

Type: Operating instructions

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Danfoss Akva Lux II TDP-F Operating instructions

Danfoss Akva Lux II TDP-F Operating instructions

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