Danfoss Akva Lux II VXe User manual

Instructions for installation and use
VXe
Fully insulated
for very low
heat losses.
Indirect district heating substation for heating and domestic hot water.
Indirect, fully insulated district
heating subtation Akva Lux II VXe
www.danfoss.com

Instructions for installation and use Akva Lux II VXe
2 | © Danfoss | Produced by Danfoss Redan A/S | 2021.02 xxxxxxx
2.0 Installation instructions, safety and handling...............................................................................................................................................................3
3.0 Getting started - Quick guide for easy start-up............................................................................................................................................................5
4.0 Main components / Connections......................................................................................................................................................................................7
5.0 Diagram, Dimensional sketch, Example..........................................................................................................................................................................9
6.0 General, Mounting of heat meter and safety valves................................................................................................................................................ 10
7.0 Filling the system with water ........................................................................................................................................................................................... 11
8.0 Recirculation........................................................................................................................................................................................................................... 12
9.0 Electrical connections......................................................................................................................................................................................................... 13
10.0 Adjustmend and commissioning ................................................................................................................................................................................... 14
11.0 Heating circuit, Danfoss ECL 310 automatics............................................................................................................................................................. 15
12.0 Control of heating circuit................................................................................................................................................................................................... 16
13.0 Heating circuit, pump......................................................................................................................................................................................................... 18
14.0 Domestic hot water ............................................................................................................................................................................................................. 20
15.0 Maintenance........................................................................................................................................................................................................................... 21
16.0 Troubleshooting ................................................................................................................................................................................................................... 23
16.0 EU Declaration of conformity........................................................................................................................................................................................... 25
17.0 Commissioning Certificate................................................................................................................................................................................................ 26
1.0 Content
Akva Lux II VXe HWP
ECL 310/A237/A337
Akva Lux II VXe HWP
ECL 310/A237/A337, STW (safety temperatur monitor)

Instructions for installation and use Akva Lux II VXe
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2. 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 mainte-
nance must be carried out by qualified and authorized personnel in
compliance with the local safety regulations.
Once the station has been installed and is operating, there is normally
no need to alter the settings or other functions. The district heating
substation is very reliable and easy to operate.
Energy source
The substation is primarily designed for connection to district heating.
Alternative energy sources can be used if the operating conditions are
equivalent to district heating at all times.
Application
The substation is designed only to operate with water and other heating
media may not be used.
The substation is to be connected to the household piping in a frost-free
room, where the temperature does not exceed 50 °C and the relative
humidity is not higher than 80%. The substation must no be covered,
bricked in or otherwise cut off from access.
Choise of materials
Only use materials, that comply with local regulations.
Corrosion
The maximum chloride compounds of the medium must not be higher
than 300 mg/l.The risk of corrosion increases considerably if the recom-
mended chloride content is exceeded.
Safety valve(s)
Installation of safety valve(s) must always be in compliance with lo-
cal regulations.
Noise level.
≤ 55 dB.
PTC2+P controller for domestic hot water
The controller is preset from factory and sealed with a
red sticker. This sealing must not been broken.
The warranty becomes void if the sealing is broken.
Storage
Before installation, the units must be stored in a dry, heated (i.e. 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.
Connection
It must be possible to cut off all energy sources to the unit - including
electrical connections - at all times. The unit must be connected to an
electrical equalizer connection.
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 substa-
tion.
Warning of high pressure and high temperature
The maximum supply temperature in the district heating network
can be up to 120°C and the operating pressure can be up to 16 bar.
This may result in a risk of scalding from touching the substation and
from outflow of the medium (water/steam). Exceeding the substa-
tion design data and operating parameters for pressure and tem-
perature carries an appreciable risk of personal injury and/or damage
to property.
Emergencies
In the event of fire, leaks or other hazards, immediately shut off all
sources of energy to the substation, if possible and call for appropri-
ate assistance.
If the domestic hot water is discoloured or malodorous, shut off all
ball valves on the substation, notify all users and call for professional
assistance immediately.
Warning of damage during transport
On reception of the substation, and before installing it, check for any
evidence of damage during transport.
The substation must be handled and moved with the greatest care
and attention.
IMPORTANT - Tightening of connections
Before adding water to the system, ALL pipe connections MUST be
retightened, as vibrations during transport may have caused leaks.
Once the substation has been filled and the system has been put into
operation, ALL pipe connections MUST be tightened once more.
(Do not overtighten! - See page 8, Test and Connections)
Handling
We recommend that you wear suitable safety footwear while
handling and installing the substation.
NOTE: Interventions/rework on our components results in loss of
warranty.

Instructions for installation and use Akva Lux II VXe
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Reach
All products of the Akva Lux IITriiiple series comply with the provisions
of the REACH regulation.
We are therefore obliged to inform our customers about the presence
of substances according to the SVHC candidate list, if they are present.
We hereby inform you:This product contains brass parts containing lead
(CAS 7439-92-1) in a concentration above 1% (w/w).
Potential equalization / grounding
Equipotential bonding is understood as all measures for eliminating elec-
tri-cal potential differences (contact voltages), which can occur between
eg two pipelines. Equipotential bonding is an important measure for pro-
tec-tion against electric shock. Equipotential bonding reduces corrosion
in the heat exchanger, instantaneous water heaters, district heating sta-
tions and plumbing installations. Equipotential bonding should be in ac-
cordance with the provisions 60364-4-41: 2007 and IEC 60364-5-54: 2011.
Binding point is marked with a grounding symbol on the bottom right
corner of the mounting plate and there is a hole in the mounting plate
and a label with grounding symbol.
Disposal
The station consists of materials that must not be disposed of with
household waste. Disconnect the entire energy supply and disassem-
ble the product for disassembly and dispose of it in accordance with
local regulations.
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.
2. INSTALLATION INSTRUCTIONS, SAFETY AND HANDLING

Instructions for installation and use Akva Lux II VXe
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Mounting
Connect the substation to the household piping in accordance with
the labelling at the bottom and/or in accordance with the instructions
in this manual.
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.
For instructions about recirculation connection, see page 14.
GETTING STARTED is a quick guide and some details in connection with
installation and commissioning may require additional information,
which can be found elsewhere in this instruction manual.
GETTING STARTED AKVA LUX II VXe
If the household piping system features domestic hot water recircula-
tion, the substation must be connected to the recirculation system,
- according to instructions on page 14.
1. Mount the substation on a solid wall using two sturdy bolts (max. 8
mm), screws, expansion bolts or similar.
2. Tighten all pipe connections, as they may have loosened during
transport and handling.
3. Mount the district heating meter (see page 11).
4. On systems that feature a safety valve, establish a drain connection
in compliance with the applicable legislation.
5. Fill the heat exchanger / the system with water according to the
instructions on page 12.
6. Open the ball valve for the HE supply and return flow, as well as the
DHW outlet and heat up the system.
7. Check the substation and the household piping thoroughly for leaks.
8. Pressure test the entire system for leaks in accordance with the ap-
plicable regulations.
9. Connect pump and automatic components to the electricity supply,
but do not switch on the power.
10. Heat the system and vent the radiator circuit/heating side tho-
roughly on the radiators and the air valve, if any.
11. Connection
Now switch on the pump and automatic components, if any.
12. Finish by adjusting the substation in accordance with the instruc-
tion manuals and remember to fill out the Commissioning Certificate
page 31.
Note!
Heating and cooling the substation may cause leaks.Therefore
it may be necessary to retighten the connections in the period
after commissioning.
Note!
Never lift the station by its front insulation cover!
3. GETTING STARTED - QUICK GUIDE FOR EASY START-UP

Instructions for installation and use Akva Lux II VXe
6 | © Danfoss | Produced by Danfoss Redan A/S | 2021.02 xxxxxxx
3. GETTING STARTED - QUICK GUIDE FOR EASY START-UP
Start-up: See page 5 ” Getting started”
Diagram example: See page 9
Main components. See page 7 + 8
Mounting / Mounting of heat meter: See page 10
Safety valves: See page 10
Re-circulation: See page 12
Electrical connection: See page 13
Outdoor sensor: Connect to terminal block U
Commissioning: See page 17-22
Reading of meter:
Consumption and actual DH temperatures can be
read on the meter display, placed under the ECL controller.
Temperatures:
To be read on thermometers 13
Pressure:
To be read on manometer 15
Filling the system with water: See page 11
15
Meter
display
U
13
13
57
7C7A 7B

Instructions for installation and use Akva Lux II VXe
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1.
2.
5.
6.
7A.
7B.
7C.
8.
11.
12.
13.
14.
15.
16.
23A.
23B.
24.
25.
29.
30.
38.
40.
Akva Lux II VXe HWP, ECL 310/A237/337
Plate heat exchanger HE
Plate heat exchanger DHW
Strainer
Non-return valve
Ball valve ¾ ET/ET 120 mm for thermometer/manometer
Ball valve ¾ IT/ET 120 mm for thermometer
Ball valve ¾ ET/ET 120 mm for DVGW
Circulation pump, HE
Safety valve, HE, 3 bar ½”
Safety valve, DHW, 10 bar ½”
Thermometer
Manometer connection
Manometer
Expansion vessel 12 L
Sensor pocket ½”for heat meter
Plugs ½”with O-Ring
Fitting piece for heat meter ¾”x 110 mm
Danfoss Controller ECL 310/A237/337
Actuator AMV
Pressure independent control valve with integrated flow
limiter AVQM
PTC2+P Controller
Thermostat for bypass/circulation
Primary
DHW
DCW
HE return
HE supply
DH supply
DH return
Secondary DHW
4. MAIN COMPONENTS / CONNECTION- AKVA LUX II VXE A237/337
7C7A 7B
25
2
8
40
38
16
17
1
24
29
23A+B
13
6
12
11
7E
5
14
15
30
5

Instructions for installation and use Akva Lux II VXe
8 | © Danfoss | Produced by Danfoss Redan A/S | 2021.02 xxxxxxx
4. MAIN COMPONENTS / CONNECTION - AKVA LUX II VXE A237/337, STW
25
2
8
40
38
16
17
1
24
29
30
7C7A 7B
23A+B
13
6
12
11
7E
57
1.
2.
5.
6.
7A.
7B.
7C.
8.
11.
12.
13.
14.
15.
16.
23A.
23B.
24.
25.
29.
30.
38.
40.
57.
Akva Lux II VXe HWP, ECL 310/A237/337
Plate heat exchanger HE
Plate heat exchanger DHW
Strainer
Non-return valve
Ball valve ¾ ET/ET 120 mm for thermometer/manometer
Ball valve ¾ IT/ET 120 mm for thermometer
Ball valve ¾ ET/ET 120 mm for DVGW
Circulation pump, HE
Safety valve, HE, 3 bar ½”
Safety valve, DHW, 10 bar ½”
Thermometer
Manometer connection
Manometer
Expansion vessel 12 L
Sensor pocket ½”for heat meter
Plugs ½”with O-Ring
Fitting piece for heat meter ¾”x 110 mm
Danfoss Controller ECL 310/A237/337
Actuator AMV
Pressure independent control valve with integrated flow
limiter AVQM
PTC2+P Controller
Thermostat for bypass/circulation
Safety thermostat Jumo AT
Primary
DHW
DCW
HE return
HE supply
DH supply
DH return
Secondary DHW
5
14
5
15

Instructions for installation and use Akva Lux II VXe
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DH
Supply HE
Supply
HE
Return
DH
Return
DHW
DCW
23A Sensor pocket ½”/10x1, plug M10
for heat meter
23B Plug ½” with O-ring
24 Fitting piece for heat meter
3/4” x 110 mm
25 Danfoss Controller ECL 310/
A237/337
26 Outdoor sensor, ESMT
27 Danfoss sensor, ESMC
29 Danfoss actuator HE, AMV 150
30 Pressure independent control
valve with integrated flow limiter
AVQM
38 PTC2+P controller
40 Thermostat for Bypass/
Circulation
1 Plate heat exchanger HE
2 Plate heat exchanger DHW
5 Strainer
6 Non-return valve
7 Ball valve ¾
8 Circulation pump
11 Safety valve HE
12 Safety valve DHW
13 Thermometer
14 Manometer connection
15 Manometer
16 Expansion vessel 12 L
65 100 80 80 80 80 65
1 2 3 4 5 6
550
932
315
55
1: Fjv. frem
2: Fjv. retur
3: Varme retur
4: Varme frem
5: V.V.
6: K.V
POS.
Qty.
PART NUMBER Description
1
1
003H6735 AVQM DN15 kvs=1.6
2
1
003L1047 FJVR sensor 10-50°
3
1
003L3864 PTC2+P 15/3.0 45-65
4
2
004B1852 XB06H-1, 26 pl
5
2
004B6040 Ball valve DN20 N/N
6
2
004B6094 Ball valve DN20 N/N
7
2
004B6102 Filter f. TEE DN20
8
1
004U8616 Kontraventil indb. m. krave DN20
9
1
082G3093 AMV 150 230V
10
1
087H3040 ECL 310
11
1
087H3230 Sokkel ECL 210/310
12
2
087N0015 ESMC
13
2
101001 Pladeskrue 4.2x13
14
7
113206 Popnitte Ø4.8x10 Alu
15
1
1251102 Tee DN20 boret 1/8" venstre
16
1
125168 Blok DN20
17
1
125170 Tee forl. DN20 3/4" x 3/4" x 3/4"
18
2
130062 Kronmuffe
19
1
144B2149 Tee DN20 3/4"x3/4"x1/2"
20
2
144B2151 Tee 1/2i"x3/4"x3/4" union nut (125.308)
21
1
144B2159 Tee 3/4"M x 3/4"N x M14x1
22
1
144B2162 Tee DN20 3/4"x nut x 1/2"
23
1
144B2172 Prop 1/2" m. O-ring
24
1
144B2176 Mont.bøsning f. 3/4"x1" Oml.
25
1
144B2185 Monteringsbøsning 2x 3/4" Oml.
26
1
144B2189 Filter for PM/PT°C-Regulator
27
2
144B2195 Prop 1/2" m. M10x1
28
1
144B2327 Tee DN20 Nut x Nut x 3/4"
29
2
144B2379 Flatseal Ø24/17x2,75
30
1
144B2383 Safety valve Syr 10 bar 1/2" x 3/4"
31
1
144B2384 Sikkerhedsventil Syr 3 bar 1/2" x 3/4"
32
1
144B2386 Luftskrue 1/2"
33
3
144B2476 Angle 3/4" ext. thr. 3/4" nut
34
1
144B2515 Kuglehane vinkel 3/4"N x 3/4" Oml.
35
1
144B2516 Slutmuffe 3/4" Redan
36
38
145H3120 Pakning 3/4" m EPDM 282
37
2
145H3121 Pakning 1" 30x21,5x3
38
4
145H3133 Termometer (0 - 120)
39
1
145H3134 Termometer (0 - 60)
40
1
145H3137 Gasket Ø11/5 x 1 fiber
41
1
145H3138 Flatseal Ø24/17x2
42
2
145H3278 Tee boret højre M8x1
43
1
145H3397_07 Kap. rør Ø4x1
44
2
145H3432 Hexagon nipple 1/2" x 3/4" w. O-ring
45
5
145H3443 Fjederbølge Ø15x8 f. termometer
46
2
145H3619 Kuglehanesæt grøn DVGW
47
1
145H3696 Beslag f. Tee
48
1
145H3711 Grundfos UPM3 Auto L 15-70 130 EUX9
49
1
145H3825 Tape m. symboler
50
1
145H3993 Passtk. 3/4" x 110 Stål
51
1
145H4196 Bagplade VXe
52
1
145H4197 Beslag f. VX
53
1
145H4198 Beslag VXe
54
1
145H4203 Isolering VX-ny
55
1
145H4205 Cap. tube Ø6x0,7
56
1
145H4210 Polystyren plade f. mont. af måler
57
3
145H4233 Gipsdybel Ø14,5x22 mm GK
58
3
145H4234 Pladeskrue ST 3.5x9,5 BN30904
59
1
145H4236-01 Strips 3,6x1,5 L=200 sort
60
2
145H4236-02 Strips 3,6x1,5 L=200 sort
61
1
145H4294 Corner angle 1/8" f. manometer
62
1
145H4364 Skrue M6x8 Indv. 6kt. ELZ BN3
63
1
145H4490 Manometer 4 bar 1/4" bag 130°
64
1
145H4713 Låseskinne
65
1
145H4811
66
1
183L5060 Label Jord
67 1 183L5070 Overlay VXe Danfoss
68
1
305411-14 Kap. rør Ø4x1
69
1
326131S Termometerlomme Ø18
70
1
371155-6kt30 Label kontraventil
71
1
5301511 Rør Ø18
72
1
5302034 Rør Ø18
73
1
5302051 Rør Ø18
74
1
530206 Rør Ø18
75
1
530207 Rør Ø18
76
1
530208 Rør Ø18
77
1
5302111 Rør Ø18
78
1
530213 Rør Ø18
79
1
5302131 Rør Ø18
80
1
530364 Rør Ø18
81
1
5303641 Rør Ø18
82
1
8301032 Rør Ø18
83
1
830142
84
1
Label FILTER-Ø18 Label Filter
85
1
Label-outdor
censor Label Outdor Censor
86
1
PTC2_kap10 PTC2 kap-rør
87
1
PTC2_sensor PTC2 føler
88
1
X00096100 VXe-trykeksp. sæt
Danfoss Standard
A3 1:6
Material Size Scale Projection
Danfoss Redan A/S
Approval
JJ 30-10-2018
Design
Replace
VXe
Designation
1 / 1 Sheet
Rev.
145F0589 No.
Confidential: Property of Danfoss Redan A/S, Nordborg, Denmark.
Not to be handed over to, copied or used by third party. Two- or three
dimensional reproduction of contents to be authorized by Danfoss Redan A/S.
65.592 kg
Weight
General tolerance accuracy, measurements without tolerance:
ISO 2768 - mK
F F
E E
D D
C C
B B
A A
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
Connections:
1. District heating (DH) supply
2. District heating (DH) return
3. Heating (HE) return
4. Heating (HE) supply
5. Domestic hot water (DHW)
6. Domestic kold water (DCW)
5. DIAGRAM & DIMENSIONAL SKETCH, EXAMPLE - AKVA LUX II VXE A237/337

Instructions for installation and use Akva Lux II VXe
10 | © Danfoss | Produced by Danfoss Redan A/S | 2021.02 xxxxxxx
6. GENERAL, MOUNTING OF HEAT METER AND SAFETY VALVES
General
The installation, connection and maintenance of the substation
must be performed by qualified 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
4 sturdy bolts (max. 8 mm), screws or expansion bolts positioned
in the four keyholes.
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.
For fully insulated systems
The insulation front panel on the VXe substations can be removed
without using tools.Take hold of the air duct in the top and bottom
of the front insulation section and pull carefully forward until the
front insulation section releases from the rear section. Then pull
gently until the front section is free from the components.
Test and connections
Before filling 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 filled with water,
tighten all the pipe connections once more before performing pres-
sure test for leaks. After heating of the system, check all the connec-
tions and retighten if necessary.
Please note that the connections may feature EPDM rubber gaskets!
Therefore, it is important that you DO NOT OVERTIGHTEN the
union nuts. Overtightening may result in leaks. Leaks caused by
overtightening or failure to retighten connections are not covered
by the warranty.
Heat meter, fitting pieces.
The substation is equipped with fitting pieces for heat meter on
the district heating return line. (Measurement: 3/4”x 110 mm).
Fitting of heat meters
- Close the four ball valves on the district heating and the
heating sides.
- Loosen the union nuts at both ends of the fitting piece (A + B)
and remove it.
- Fit the heat meter, - remember to insert gaskets.
- Mount sensor, - remember to insert gaskets.
- Mount temperature sensors in sensorpockets (according to
heat meter instructions.
- After mounting of heat meter remember to check and tighten
all pipe connections before commissioning the substation.
Meter display (reading unit)
The meter reading unit is placed on the console together with
the ECL regulator, as shown in the photo to the right, so that
reading of the meter can be done without removing the insula-
tion cover.
Safety valve(s)
Always lead the blow-off pipe from the safety valve to a drain in
accordance with applicable legislation.
The insulation cover is be prepared for this and blow-off pipe
from the safety valves are led through the slit in the insulating
cover as shown in the photo to the right.
A B
Meter
display

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7. FILLING THE SYSTEM WITH WATER
Test and connections
Before filling the system with water, retighten all the pipe connec-
tions because vibrations and shocks during transport and handling
may have caused leaks. Once the system has been filled with wa-
ter, 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 feature 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.
Filling, start-up
Before filling the system with water, retighten all the pipe connec-
tions. Once the system has been filled with water, tighten all the
pipe connections once more before performing pressure test for
leaks. Before filling the system with water and starting-up, check if:
- pipes are connected according to the circuit diagram,
- expansion vessel is connected,
- heat meter is mounted,
- shut-off valves are closed,
- threaded and flanged connections are tightened,
- recirculation, if any, has been established.
Filling the heat exchanger / the system with water:
• The pump must be switched off when filling the system with
water.
• Open the ball valves for the HE supply and return flow and
fill the system with water and at the same time venting the
system.
• Fill the heat exchanger / the system with water until the ma-
nometer shows a working pressure, which corresponds to the
system height + approx. 5 m (approx. 1.2 - 1.5 bar).
• Finally open the remaining ball valves and heat up the sy-
stem.
• After filling and heat-up of the system it should be vented by
means of the air vents on the substation, if any and on the
radiators.
• Then switch on the pump.
* Note: There is no filling valve inside the station. For refilling use
a refill hose, customary for heating systems. Filling of water to
the heating system must be done outside the substation,
typically by connection to a cold water supply in the house-
hold installation.

Instructions for installation and use Akva Lux II VXe
12 | © Danfoss | Produced by Danfoss Redan A/S | 2021.02 xxxxxxx
8. RECIRCULATION
Circulation set for Akva Lux IIVXe substations is available as extra equip-
ment. The set applies to various substation types, therefore excess
components may occur.
It is to be recommended to prepare the substation for recircu-
lation BEFORE mounting it on the wall.
Fig. 1
Circulation set code No. 145H4438:
1. Sheathed steel hose
2. 1/8 x 4 mm nipple/bushing
3. Mounting bracket
4. Hexagon nipple
5. Screw plug (4 mm)
Fig. 2
Remove console (6) incl. ECL controller and meter (not shown in
photo) to make room for mounting the circulation kit. The console
is removed by pulling it out / up so that it comes free of bypass
thermostat, manometer and domestic hot water controller.
Fig. 3
Remove the nipples/plugs from the domestic hot water controller
(use a 6 mm Allen key). Do not re-use the plugs!
Fig. 4
Remove/demunt capillary tube on T-piece.
Fig. 5
Seal off T-piece with a 4 mm plug (5).
Fig. 6
Fit/screw circulation hose end (steel hose) onto the controller (in the
rear connection piece). Fit capillary tube on the DHW controller by
means of 1/8 x 4 mm nippel/bushing (2).
Fig. 7
Carry the circulation hose behind and down alongside the cold water
pipe as shown and mount the supplied bracket (3), as shown, with two
screws and secure the hose with a 1½“hexagonal nipple - thus prepared
for establishing a possible circulation connection.
NOTE!
Remember always to mount circulation pump and non-return
valve on the circulation pipe.
This not part of the circulation set.
New function (from bypass to circulation thermostat)
When the substation is connected to the household recirculation
system, the thermostat will function as a circulation thermostat and
control the circulation water temperature, independently of the set
DHW temperature. It is recommended to set the termostat in pos. 3.
Fig. 2
Fig. 3
Fig. 5
Fig. 7
Fig. 4
Fig. 6
Fig. 1
1
2
3
4
5
6

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ECL Comfort 210 bundpart
9. ELECTRICAL CONNECTION
Electrical connection
The electrical connection of the substation must be performed by
a qualified and authorised electrician in compliance with all ap-
plicable rules and regulations.
The station should be connected to a 230 V AC power supply.
The power supply / connection must be carried out in accordance
with the applicable regulations and instructions.
The station must be wired and connected to an external main switch
so that it can be disconnected during maintenance, cleaning and
repairs or in the event of an emergency.
Do not forget to establish potential equalization.
The Akva Lux II VXe are delivered with Danfoss ECL Comfort 310
controllers from factory.
The actuator and sensors are mounted in the station.The controller
is built into the console at the top of the station.
The station is wired and tested in the factory.
Electrical connections between the controller, pump(s), sensor and
actuator(s) are made.
Mounting of outdoor temperature sensor (ESMT)
The outdoor temperature sensor is delivered separately and must
be mounted on site according to the enclosed illustrations.
The outdoor sensor is always to be mounted on the coldest side
of the property, where it is less likely o exposed to direct sunshine
(normally the north side of the property).
The sensor must not be exposed to the morning sun, and should
not be placed above windows, doors, air vents or other heat sources,
and not under balconies and roof eaves.
Mounting height approx. 2.5 m above ground.
Temperature range: -50 to 50° C.
Electrical connections
The cables can be connected to the sensor in any order.
Connection cable: 2 x 0.4 - 1.5 mm²
For ECL 310:
Connect the cable ends to ECL controller in common ground
terminal and in terminal 29.
Access to ECL base part
Access to the base part for connection of outdoor sensor or the like
is obtained by pulling the lock (pin) down with a screwdriver until
a yellow line is visible on the lock. Then, the front piece can easily
be removed. Lock by pressing the lock (pin) up.
Controller ECL Comfort 310
Supply voltage: 230 V a.c. - 50 Hz
Voltage range: 207 bis 244 V a.c. (IEC 60038)
Power consumption: 5 VA
Load on relay outputs: 4(2) A - 230 V a.c
Load on triac outputs: 0,2 A - 230 V a.c.
Actuator AMV 150
Supply voltage: 230V a.c. - 50 Hz
Power consumption: 2 / 8 VA
For further information please see enclosed instruction manual.
Pumpe UPM3 AUTO
Supply voltage: 230 V a.c. - 50 Hz
Protection class:
IP44 Power consumption: Max. 52 Watt
For further information please refer to the enclosed instructions for
the circulation pumps.
Lock / pin
Common ground
terminal

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10. ADJUSTMENT AND COMMISSIONING
General information
PLEASE NOTE! Some models may have a slightly different appear-
ance, but the control function is in principle the same as described
below.
Commissioning
Commission the substation in accordance with the instruction
manual.
Filling the system / operating pressure
Fill the unit with water according to the instructions on page 11.
If the pressure drops below 1 bar, water must be added to the sys-
tem.
The operating pressure should never exceed 1.5 bar.
(The safety valve opens at 2,5 bar).
The pressure is read on the manometer.
If system pressure drops dramatically within a short time, heating
system should be examined for leakage, - this includes checking
the factory set pressure of the expansion vessel, which is normally
0,5 bar.
Differential pressure controller
For Akva Lux IIVXe the differential pressure controller is installed in
the AVQM self-acting flow controller with integrated control valve.
Please see page 16.
Manometer
AVQM

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11. HEATING CIRCUIT, DANFOSS ECL 310 AUTOMATICS
Weather-compensated control of the heating circuit
Danfoss ECL 310
The temperature for the heating circuit is controlled electronically by
the Danfoss ECL controller. The supply temperature ist calculated by
the controller on basis of the outdoor temperature.
The ECL Comfort controller is loaded with a selected application by
means of an ECL Application Key (Plug-&-Play). The Application Key
contains information about application, languages and factory set-
tings. Various applications can be loaded by means of the ECL Ap-
plication Key, and it is possible to update the controller with new
application software.
The controller is factory preset to turn off the heating automatically
in the summer period. The controller settings can be changed in ac-
cordance with the enclosed producer instructions for the mounted
controller.
The controller is pre-programmed (normally) with the following fac-
tory settings:
• Language = English,
• Operating mode of the controller = Comfort“Sun”Symbol,
• Application type = A237/337
Motor speed and motor protection is set and the controller is func-
tional is functionally tested, so it’s ready for use.
Start-up of ECL 310 (easy start-up)
When the outside temperature sensor is properly installed and electri-
cally connected to the controller as described in the instructions on
page 15, proceed as follows:
1. Connect the controller and switch it on,
2. Choose ‘MENU’ in any circuit - Confirm and turn the dial and
choose ‘Common controller settings’ in the circuit selector at the
top right corner in the display,
(You navigate in the controller by turning the dial left or right to the desired position.
The position indicator in the display ( ) will always show you where you are).
3. Turn dial to select time and date,
Push the dial to confirm the selection
4. Select time and date,
5. The controller is now ready for use. Set heat curve and
temp. max. according to the procedure described below.
Setting / change of factory settings:
6. Choose ‘MENU’ in any circuit - Confirm and turn the dial and
choose‘ Heating circuit’in the circuit selector at the top right corner
in the display (radiator symbol),
7. Then turn the diall and choose‘Settings’ and confirm by pushing
the dial.Then choose‘Flow temperature’and here you set‘Heat
curve’(value), according to the actual system type, including“Temp.
max.”,
8. Typical setting ranges:
Heating circuit one-string two-string Floor heating
Temp. max. 70-90°C 55-65°C 35-40°C
Heat curve 1,0 - 1,75 0,8 - 1,0 0,1 - 0,5
Note; in systems that feature only floor heating the max. supply tempe-
raturemust bechangedaccordingtotheabovementionedinformation.
If increased heat demandoccurs duringtheheatingperiod,the controller
settings can be changed
See ECL Application Key Box with ECL Comfort
210/310 user guide and mounting guide, for
further information.
Turn the dial to choose ’MENU’
and press to confirm selection
Circuit selector
Choose this symbol to enter
‘Common controller settings”
Circuit selector
Heating circuit

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Self-acting flow controller with integrated control valve and ac
tuator
For controlling the heating circuit the Akva Lux IIVXe is supplied with
a self-acting flow controller with integrated control valve Danfoss
AVQM and a Danfoss AMV actuator placed in the primary return flow
line. The AMV actuator is electrically wired to the controller from
the plant.
The control valve closes on rising differential pressure and opens on
falling differential pressure to control max flow. The controller closes
when set max. flow is exceeded.
In a combination with electrical actuators AMV and ECL electronic
controllers the flow and temperature can be controlled to achieve
highest energy savings.The controller is equipped with excess pres-
sure safety valve, which protects control diaphragm for flow control
from too high differential pressure.
AMV 150
The actuator has undergone a functional test and is preset from
factory.
In the event of operating disturbances the actuator can be shut off
manually by turning the manual override knob on top of the actuator
clockwise. Please note that the knob can be“tight”to turn.
For additional information see the enclosed manuals:
Self-acting flow controller with integrated control valve and
actuator AVQM
Electronic actuator AMV 150
-
12. CONTROL OF HEATING CIRCUIT
AMV 150
Press and hold the button (on
the bottom side of the actuator)
during manual operation.
Manual override
AVQM

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Safety function, Jumo AT
The heating circuit(s) can be supplied with a safety thermostat Jumo
AT for protection against overheating.
From factory the Jumo AT safety thermostat is pre-wired to the
Danfoss ECL controller with a 2 m cable, enabling the thermostat
housing to be mounted in any mounting position on the household
piping (HE supply) on site.
For additional information see the enclosed manuals for:
Jumo AT
12. CONTROL OF HEATING CIRCUIT

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Fig. 1. User interface
with a push button and
five LEDs.
Fig. 2. Performance view
13. HEATING CIRCUIT, PUMP
Grundfos Pump UPM3
Grundfos UPM3 Auto has 12 optional settings, which can be select-
ed with the push-botton. See fig. 1 - User interface.
The pump is set from factory to Proportional pressure AUTOadapt.
The user interface shows:
* performance view (during operation)
- operation status
- alarm status
* settings view (after pressing the button)
During operation, the display shows the performance of the pump.
By pressing the button, the display changes status or you can
change settings.
The LEDs show the power consumption for the pump.
When the pump is running, LED 1 is green. The four yellow
LEDs indicate the current power consumption.
See fig. 2 - Performance view.
Performance
% of P1max. Green Yellow Yellow Yellow Yellow
0% (standby)
0 - 25%
25 - 50%
50 - 75%
75 - 100 %

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Check the pump setting by pressing the button once (one constant
pessure).The LEDs will briefly (2 sec.) show the pump setting before
changing back to showing the power consumption.
See fig. 3 - Pump setting view.
If the pump setting does not give the desired distribution of heat in
the rooms of the house, change the pump setting.
See fig. 4 - Recommended pump settings.
Before starting the setting, make clear what the display should
show for the new setting (see fig. 3).
To change the pump setting, choose the setting you want (see fig
3), press the button down for more than 2 seconds (less than 10)
and the pump switches to setting selection, the LEDs start flashing
and display the current setting.Then press the button until the LEDs
shows the desired setting. The LEDs flash and when they stop the
new setting is saved.The LEDs return to show power cunstumption.
Please note that if the LEDs do not flash after 2 seconds, possibly
the pump setting is locked. To unlock, press the button down for
more than 10 seconds. LEDs will flash and the pump is unlocked.
To lock the pump, repeat the procedure.
For more information, se enclosed Grundfos instructions.
Alarm status
In case the 1st LED is red the pump has detected one or more alarms.
See fig. 5 - Alarm status. When there is no active alarm anymore
the user interface switches back to operation mode shortly and then
showing power consumption.
Fig. 4. Recommended pump settings
Fig. 5. Alarm status
Fig. 3. Pump setting view
* Bronze or stainless steel pump housing
UMP3 15-70 AUTO
Application Recommended pump mode
Radiator
two-pipe system
1. Auto adapt proportional pressure mode
2. Proportional pressure mode
Radiator
one-pipe system
1. Constant curve mode, speed 1-2-3-4
2. Constant pressure mode
Floor heating 1. Auto adapt, Constant pressure mode
Ventilation 1. Constant curve mode, speed 1-2-3-4
2. Constant pressure mode
Domestic hot water* 1. Constant curve mode, speed 1-2-3-4
Function Red Yellow Yellow Yellow Yellow
Blocked
Supply voltage low
Electrical error
SETTING VIEW
SETTING VIEW
PWM PROFILE A: 4M
PWM PROFILE A: 5M
PWM PROFILE A: 6M
PWM PROFILE A: 7M
UPM3 FLEX AS
UPM3 FLEX AS is a exible solution for boiler
systems now and in the future. It is designed to
work both with and without PWM signal, allow-
ing you to upgrade your systems without having
to change the circulators.
Description
»Integrated OEM high ecient circulator
»For exible use in appliances without PWM
speed control with 4 speeds
»or in applications with externally controlled
signal with standard PWM prole A for 4 MAX
curves
Exceeding benchmark level of the Ecodesign
requirements in 2015, EEI ≤ 0.20 EN16297/3
UPM3 AUTO
UPM3 AUTO is for all applications in which an
internally controlled pump is needed. It is designed
to be used in appliances or cabinets with increased
ambient temperatures and limited space options;
either in standalone applications or in kit systems
without PWM controller.
Description
»Standalone OEM high eciency circulator
»For standalone applications
»Optimal for oorheating with a high valve authority
»Flexibility of settings benets the OEM production and
the installation in the eld
Internally controlled circulators
» 3 control modes
»10 Curves
»PLUS AUTOADAPT proportional and constant pressure
»Substitutes ALPHA2 pumps
MAXIMUM CURVE PWM PROFILE A
4 M 4 M
5 M 5 M
6 M 6 M
7 M 7 M
PROPORTIONAL
PRESSURE
CONSTANT
PRESSURE
CONSTANT
CURVE
CURVE 1 CURVE 1 4/2 M
CURVE 2 CURVE 2 5/3 M
CURVE 3 CURVE 3 6/4 M
AUTOADAPT AUTOADAPT 7/5 M
SETTING OPTIONS
SETTING OPTIONS
AUTOADAPT
AUTOADAPT
PUMP RUNS
WITHOUT PWM
SIGNAL
PUMP RUNS WITH
PWM SIGNAL
PROP. PRESS.: CURVE 1
PROP. PRESS.: CURVE 2
PROP. PRESS.: CURVE 3
PROP. PRESS.: AUTOADAPT
CONST. PRESS.: CURVE 1
CONST. CURVE: CURVE 1
CONST. PRESS.: CURVE 2
CONST. CURVE: CURVE 2
CONST. PRESS.: CURVE 3
CONST. CURVE: CURVE 3
CONST. PRESS.: AUTOADAPT
CONST. CURVE: CURVE 1
13. HEATING CIRCUIT, PUMP

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14. DOMESTIC HOT WATER
General information
PLEASE NOTE! Some models may have a slightly different appearance,
but the control function is in principle the same as described below.
Commissioning
Commission the substation in accordance with the instructions in
this manual.
Regulation of domestic hot water temperature
The domestic hot water is prepared in the heat exchanger based on
the flow principle and the temperature is controlled by a combined
hydraulic and thermostatic self-acting controller PTC2+P with in-
tegrated differential pressure controller, which blocks the flow of
primary and secondary side flow through the heat exchanger im-
mediately after completion of the tapping process.
PTC2 controller for DHW (Fig. 1).
Adjust the hot water temperature by moving the adjuster lever to-
wards“+”(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 flow (7–8 litres per min.).The temperature
must never exceed 55°C to prevent limescale deposits building up
in the water heater.
Bypass thermostat (default)
As a standard the substation is equipped with a bypass thermostat,
Danfoss FJVR, so that when water is tapped, the water heater
immediately starts to produce hot water. We recommend setting
of the thermostat in pos.3. If you have to wait a long time (i.e. more
than 20 sec.) for hot water, it may be necessary to set the thermostat
at a higher value.
If you want to avoid waiting time altogether, you will need to set up
domestic hot water recirculation to the tapping points.
Circulations thermostat / conversion to recirculation
If the household piping system features domestic hot water recir-
culation, the substation must be connected to the recirculation sys-
tem.
Scale setting (indicative)
Pos. 2 = 30°C
3 = 40°C
4 = 45°C
Conversion to recirculation requires only an additional circulation
set. (This is not part of the delivery and must be purchased as extra
equipment, - see photo on page 14).
Connect the recirculation pipe from the fixed household piping sys-
tem to the hexagon nipple at the bottom of the substation (please see
page 14 for instructions about how to make recirculation connection).
If a time-controlled pump is used, we recommend setting the circu-
lation water temperature to approx. 35 °C.
Alternative controller PM2+P
As alternative the temperature can be controlled by a the pres-
sure-controlled self-acting controller PM2+P with integrated differ-
ential pressure controller. 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 temperature of the tap water
is approx. 48°C during normal tapping flow (7–8 litres per min.). The
temperature must never exceed 55°C to prevent limescale deposits
building up in the water heater. NB! The pin must be positioned be-
tween the blue and red dot, otherwise the controller will shut down.
Abb.
Adjuster lever
Adjuster lever
Fig. 1
Fig. 2
Fig. 3