Page is loading ...
Danfoss District Energy
MAKING MODERN LIVING POSSIBLE
Akva Lux II TDP-F
Instructions for installation and use
2
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 Certicate ................................................................................................................................................................................................ 35
33
2 Plate heat exchanger, DHW
4 Dierential 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 Dierential 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 dierent 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
DH
Supply
DH
Return
DCW
DHW
DCW
Connection for circ.
Bypass
(Standard)
Room thermostat
(dly. as loose part)
Circ. (option)
*Option:
after heat meter
HE
Supply
HE
Return
17
38
40
24
2
52
23
6
5
4
60
Primary SecundaryDomestic water
DHW DCW HE
Return
HE
Supply
DH
Supply
DH
Return
DCW
5
* Separate tting set required (see pg. 11).
Please contact your local Danfoss sales oce.
4
2 Plate heat exchanger, DHW
4 Dierential 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 Dierential 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 dierent 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
DH
Supply
HE
Supply
HE
Return
DH
Return
DCW
DHW
DCW
Connection for circ.
Bypass
(Standard)
Room thermostat
(dly. as loose part)
Circ. (option)
17
38
40
24
2
23
23
5
4
60
5
Primary SecondaryDomestic water
DHW DCW
HE
Return
HE
Supply
DH
Supply
DH
Return
DCW
6
55
2 Plate heat exchanger, DHW
4 Dierential 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 Dierential 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 dierent 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
DH
Supply
HE
Supply
HE
Return
DH
Return
DCW
DHW
DCW
Bypass
(Standard)
52
17
38
40
24
2
23
54
5A
4
59
5
30
59
47
59
Primary SecondaryDomestic water
DHW DCW
HE
Return
HE
Supply
DH
Supply
DH
Return
DCW
6
6
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
7
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
7
65 mm 65 mm
440 mm
575 mm
440 mm
21 3 4 5 6
575 mm
7
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
7
65 mm 65 mm
551 mm
0
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
Keyholes for mounting
77
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 qualied 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 dierential 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 dierence between the supply and return
temperature of the district heating water – has a signicant eect on
the overall economy. Therefore, it is important to focus on the supply
and return temperature in the heating system.
The dierence should typically be 30–35°C in systems that operate
with radiators. In systems that feature oor heating, the dierence
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 outow 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.
8
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, Dierential Pressure Controller
The dierential pressure controller (Fig. 3) reduces the high, uctu-
ating pressure in the district heating network to a constant operat-
ing pressure. The dierential 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
dierential 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 sucient 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
Adjuster lever
99
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
qualied 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 eected 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 outow 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)
10
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 qualied 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 oce for further information
and for placement of order for this.
12
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.
A
A
B
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 veried
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
14
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 dierent 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
1
2
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
F
A
D
C
G1
B
Akva Lux II TDP-F, Type 004U8264
Fig. 7 Fig. 8
Fig. 5 Fig. 6
G2
H
I
J
KL
M
E1
E2
16
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
J
K
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
F
A
D
C
G1
B
G2
H
I
J
KL
M
E1
E2
18
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
J
K
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:
1.
Start by shutting o all connections to the substation.
2.
First follow the instructions for Fig. 1, 2 and 3 on page 16.
3.
Then demount 3/4” plug in T-piece (pos. A), as illustrated in g. 1.
4.
Remove the existing capillary tube from pos. C to D. See g. 2.
5.
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.
6.
Mount bypass thermostat in pos A, as illustrated in g. 4.
7.
Plug the hole in pos. B with 3/4” plug (from pos A) and gasket, as
illustrated in g. 5.
8.
Plug the hole in pos. D with a steel ball and 6 mm union nut.
9.
Finally follow instructions for g. 6 to 14 on pages 16 and 17.
Fig. 1
Fig. 2
Fig. 3 Fig. 4
A
B
C
D
Fig. 5
A
D
Fig. 6
B
20
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
F
A
D
C
G1
B
G2
H
I
J
K
L
E2
E1
/
