Danfoss S 22 User manual

Danfoss District Energy
MAKING MODERN LIVING POSSIBLE
S 22
Instructions for installation and use
S 22
Instructions for installation and use

2
1. Content
Instructions for installation and use S 22
DKDHR VI.IE.D1.01 Danfoss District Energy
1. Content..................................................................................................................................................................................................................................................2
2. Product introduction, S 22 - ECL Comfort 310, A266, electronic control of 2 circuits...............................................................................................3
3. Enduser instructions, description and initial adjustment ...................................................................................................................................................4
4. Installation instructions, connection, safety and handling.................................................................................................................................................5
5. Installation instructions, GETTING STARTED............................................................................................................................................................................6
6. Installation instructions, general..................................................................................................................................................................................................7
7. Electrical connections, ECL Comfort 310...................................................................................................................................................................................8
8. Adjustment and commissioning, heating circuit...................................................................................................................................................................9
9. Adjustment and commissioning, DHW circuit - App. A266............................................................................................................................................. 11
10. Operation and maintenance....................................................................................................................................................................................................... 12
11. Maintenance plan........................................................................................................................................................................................................................... 13
12. Troubleshooting.............................................................................................................................................................................................................................. 14
13. EU Declaration of Conformity..................................................................................................................................................................................................... 16
14. Commissioning Certicate .......................................................................................................................................................................................................... 17
S 22 with cover S 22, ECL 310, A266

Cover
33
Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR
2. Product introduction, S 22 - ECL Comfort 310, A266, electronic control of 2 circuits
Note!
The diagram is intended as a guide.
Principal components
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
Plate heat exchanger, brazed, DHW
Valve housing, HE
Actuator, HE
Valve housing, DHW
Actuator, DHW
Controller Danfoss ECL Comfort 310
Dierential pressure controller AVP-F
Strainer
Thermometer, DH supply
Thermometer, DH return
Pump, HE
Circulation pump, DHW
Thermometer, DHW
Thermometer, HE supply
Thermometer, HE return
Safety valves, DHW
Air valve
Manometer, DH supply
Manometer, DH return
Fitting piece for heat meter (optional)
Alternative equipment
Fitted standard pump can be replaced with an A-labelled Grundfos
pump. Please contact our sales department for further information.
Accessories available as extra equipment
White cover with door - Code No. 144B2056
Replacement parts (heat exchangers without insulation cover)
Heat exchanger XB37M-1 20 Code No. 004B1692
Heat exchanger XB37M-1 30 Code No. 004B1694
Heat exchanger XB37M-1 40 Code No. 004B1696
Heat exchanger XB37M-1 50 Code No. 004B1697
1 6
4
3 2
8
7
811
20
5
10 1415
19
16
13
12
17
18
20
9

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Instructions for installation and use S 22
DKDHR VI.IE.D1.02 Danfoss District Energy
3. Enduser instructions, description and initial adjustment
Instructions
Please read these instructions carefully before installing and com-
missioning this unit. The manufacturer accepts no liability for loss
or damage resulting from failure to comply with these instructions
for use. Read and follow these instructions carefully to prevent the
risk of physical injury and/or damage to property. Exceeding the
recommended operating parameters appreciably increases the risk
of personal injury and/or damage to property.
Installation, commissioning and maintenance must be carried out
by qualied and authorised personnel (both plumbing and electri-
cal 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 unit is very reliable and easy to operate.
Description
These instructions apply to S 22 with Danfoss ECL Comfort 310 con-
troller for control of both the heating circuit as well as a domestic hot
water circuit based on an instantaneous water heater (Application
A266).
S 22 units are tted with a dierential pressure controller that main-
tains a constant pressure in the radiators.The supply temperature to
the heating circuit is controlled electronically, and also the domestic
hot water temperature is controlled electronically.
We recommend regular inspections of the unit - ideally in connection
with readings of the district heating meter.
Pay special attention to any leaks and an excessively high return
temperature in the district heating circuit (poor cooling of the district
heating water). Cooling – i.e. the dierence between the supply and
return temperature of the district heating water – has a signicant
eect on the overall energy economy. Please note that the district
heating return temperature is directly related to the return tempera-
ture from the heating circuit (and the return temperature from the
DHW plate heat exchanger).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.
Initial setting
S 22 is electronically controlled (fully automatic) and there is nor-
mally no need to alter the settings or other functions. The DHW
and HE temperatures are set during initial adjustment and com-
missioning of the unit.
We suggest that you contact qualied and authorised personnel,
if it becomes necessary to change the parameters (temperatures,
Irregularities
When reading the meter, check all joints and connections for leaks.
If you identify any irregularities/leaks, contact your professional
provider for assistance.
Warning! Hot surfaces
Parts of the unit may be very hot and can cause burn injuries.
Be very careful when you are in the immediate vicinity of the unit.
Warnings about high pressure and high temperature
The maximum supply temperature in the district heating net-
work 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
unit and from outow of the medium (water/steam). Exceeding
the unit 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 unit, if possible, and call for appropri-
ate assistance.
If the domestic hot water is discoloured or malodorous, shut o
all ball valves on the unit notify all users and call for professional
assistance without delay.

55
Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR
4. Installation instructions, connection, safety and handling
Instructions
Please read these instructions carefully before installing and com-
missioning this unit. The manufacturer accepts no liability for loss
or damage resulting from failure to comply with these instructions
for use. Read and follow these instructions carefully to prevent the
risk of physical injury and/or damage to property. Exceeding the
recommended operating parameters appreciably increases the risk
of personal injury and/or damage to property.
Installation, commissioning and maintenance must be carried out
by qualied and authorised personnel (both plumbing and electri-
cal work).
Heat source
The unit 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 unit is designed exclusively to heat water.
The unit must not be used to heat other media.
The unit is to be connected to the household piping in a frost-free
room, where the temperature does not exceed 50°C, and where the
relative humidity is not higher than 80%.The unit must not be cove-
red, bricked in or otherwise cut o from access.
Choise of materials
Only use materials that comply with local regulations.
Corrosion
The maximum chlorine content of the medium must not be higher
than 300 mg/l. The risk of corrosion increases considerably if the
recommended chlorine content is exceeded.
Safety valve(s)
Safety valves must always be installed in accordance with the appli-
cable local regulations.
Noise level
≤ 55 dB
Connection
It must be possible to cut o all energy sources to the unit – including
electrical connections – at all times. The unit must be connected to an
electrical equalizer connection.
Potential equalization/grounding
Potential equalization is an electrical equalizer connection to secure
against user contact with dangerous voltage, which may occur for
example between two piping systems. Potential equalization reduces
corrosion in heat exchangers, water heaters, district heating units and
plumbing installations. Equalization of potentials should be eected
according to local regulations.
Warning! Hot surfaces
Parts of the unit may be very hot and can cause burn injuries. Be very
careful when you are in the immediate vicinity of the unit.
Warnings about high pressure and high temperature
The maximum supply temperature in the district heating network
can be up to 120°C and the operating pressure can be up to 16 bar.
This may result in a risk of scalding from touching the unit and from
outow of the medium. Exceeding the unit design data and operating
parameters for pressure and temperature carries an appreciable risk of
personal injury and/or damage to property.
Emergencies
In the event of re, leaks or other hazards, immediately shut o all energy
sources to the
unit , if possible, and call appropriate assistance.
If the domestic hot water is discoloured or malodorous, shut o all ball
valves on the unit, notify all users and call professional assistance with-
out delay.
Warning about damage during transport
On reception of the unit, and before installing it, check for any evidence
of damage during transport.
The unit must be handled and moved with the greatest care and at-
tention.
NB! - Tightening of connections
Before lling the unit with water, ALL pipe connections MUST be
retightened, as vibrations during transport may have caused leaks.
Once the unit has been lled and the system is hot, ALL pipe connec-
tions MUST be retightened once more. DO NOT OVERTIGHTEN THE
PIPE CONNECTIONS – see page 7,“Test & connections”.
Storage
Before installation, the unit(s) must be stored in a dry, heated (i.e. frost-
free) room.
(Relative humidity max. 80% and storage temp. 5–70°C).
The units must not be stacked higher than the limit at the factory. Units
supplied in cardboard packaging must be lifted using the handles
incorporated in the packaging. Units must be placed on pallets for
transport/moving across large distances.
As far as possible, do not lift the unit by the pipes. Lifting by the pipes
may cause leaks. REMEMBER to retighten.
Disposal
Dispose of the packaging in accordance with the local regulations for
disposal of used packaging materials. The unit 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.
Handling
Werecommendthat youwearsuitable safetyfootwearwhilehandling
and installing the unit.
We recommend that you wear suitable safety working gloves while
handling and installing the unit.
Do not remove anytransport brackets until the unitis in the immediate
vicinity of the installation site.

6
Instructions for installation and use S 22
DKDHR VI.IE.D1.02 Danfoss District Energy
Primary
supply return
District heating
Secondary
HE
return
HE
supply
Domestic water
DCW Circ. DHW
5. Installation instructions, GETTING STARTED
Connect the unit to the household piping in accordance with the
labelling at the bottom and/or in accordance with the instructions
in this manual.
Please also refer to page 7, top, Installation instructions, General.
Mount S 22 on a solid wall using expansion bolts or similar. Please
note that the unit weighs more than 60 kg!
See page 7 for more details.
GETTING STARTED is a quick guide and some details in connection
with installation and commissioning may require additional informa-
tion, which can be found elsewhere in this instruction manual.
1. When the unit has been securely mounted, close all shut-o
valves on supply and return pipes before connecting the unit
to the household piping.
2. Mount the district heating meter (if the unit includes built-in
tting piece for heat meter - see page 7 in the instructions, if
necessary).
3. IMPORTANT! Tighten all pipe connections, as they may
have loosened during transport and handling (do NOT
overtighten!) - check that the air valve in top of the unit is
closed.
4. Establish a drain connection on the safety valves in compli-
ance with the aplicable legislation.
5. Open the ball valves for HE supply and return 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.
6. Carefully open the ball valve for the DCW inlet.
7. Check the unit and the household piping thoroughly for
leaks.
8. Pressure test the entire system for leaks in accordance with
the applicable regulations.
9. Connect the ECL automatics to the electricity supply, but do
not switch on the power.
10. Heat the system and vent the radiator circuit/heating side
thoroughly on the radiators and the air valve, see pages 11
and 13“Venting of system” in the instruction manual
11. Now switch on the automatics at the mains.
12. Finish by adjusting the unit in accordance with the instruc-
tions and remember to ll-in the commissioning certicate
on page 18.
13. IMPORTANT! Heating and cooling of the system may cause
leaks. Therefore it may be necessary to retighten the connec-
tions in the period after commissioning.

77
Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR
6. Installation instructions, general
The installation, connection and maintenance of the unit must be
performed by qualied and authorised personnel. Installation must
always be performed in accordance with the applicable legislation
and in compliance with these instructions.
The unit must be installed so that it is freely accessible and can
be maintained without unnecessary disruption. Lift the unit by its
mounting plate/rear section (as far as possible do not lift the unit
by the pipes) and secure it to a solid wall using 2 expansion bolts or
the like positioned in the two keyholes in the mounting plate/rear
section. It is recommended that at least two people are involved in
the installation.
We recommend positioning of rubber spacers between the wall
and the unit to prevent the transfer of resonance noise from the
pump into the wall.
Before commissioning, rinse all the pipes in the household piping sys-
tem thoroughly to remove any impurities, and check and clean the dirt
strainers in the unit.
Test and connections
Before lling 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 lled 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.
Fitting piece for heat meter
As standard the S 22 is supplied without built-in tting piece for heat
meter.
If the unit is ordered with built-in tting piece for heat meter this is
mounted as described below.
Fitting of heat meter
- Close the ball valves on the district heating line
- Loosen the union nuts at both ends of the tting piece (20) and
remove it
- Fit/fasten the heat meter - remember gaskets
- Mount temperature sensors in sensor pockets (according to
meter regulations)
- Remember to check and tighten the union nuts and all pipe
connections before commissioning the heat meter.
Safety valve
Always lead the blow-o pipes from the safety valve (16) to a drain
in accordance with applicable legislation.
20
20
16

8
Instructions for installation and use S 22
DKDHR VI.IE.D1.02 Danfoss District Energy
230 V a.c. , A266.1 / A266.2 / A266.9
7. Electrical connections, ECL Comfort 310
Controller ECL Comfort 310
Supply voltage: 230 V AC - 50 Hz
Power consumption: 5 VA
Actuator AMV 10 / AMV 30 / AMV 150
Supply voltage: 230 V AC - 50 Hz
Power consumption: 2 VA / 7 VS / 8 VA
Pumps Wilo Yonos PARA, Stratos PARA, Star-Z NOVA
(Alternatively: Grundfos Alpha2, Magna, Alpha2 L CIL2)
Supply voltage: 230 V AC - 50/60 Hz
Power consumption:
Wilo, HE Max 45 Watt (Yonos) / 70 Watt (Stratos)
Grundfos, HE Max 25 Watt (Alpha2) / 185 Watt (Magna)
Wilo, DHW Max 4,5 Watt (Star-Z NOVA)
Grundfos, DHW Max 22 Watt (Alpha2 L 15-40 CIL2 PPS)
Electrical connection
The electrical connection of the unit must be performed by authorised
personnel.The unit is to be connected to a 230V AC mains power supply.
The power supply/connection must be carried out in accordance with
the applicable regulations and instructions.
The unit must be connected to an external switch so that it can be
disconnected in connection with maintenance, cleaning and repairs
or in the event of an emergency.
As standard the S 22 is supplied with Danfoss ECL Comfort 310 with
Application 266.The control equipment includes actuators and sensors
installed in the unit and the controller, placed/mounted on the mount-
ing plate in top of the unit.The controller is electrically wired to sensors,
pump and actuators.
Outdoor sensor is supplied loose, and installation and connection of
this is carried out in accordance with below instructions.
Installation of outdoor sensor (ESMT)
The outdoor temperature sensor is supplied loose with the unit.
It is to be mounted on site as shown in the drawings to the right.
Always mount the sensor on the coldest side of the building (normally
the north side).
It must not be exposed to morning sunlight, and must not be po-
sitioned above windows, doors, ventilation ducts, balconies under
overhanging roof sections, or close to any other heat source.
Installation height: approx. 2.5 m above ground level.
Temperature range: -50 to 50° C.
Electrical connection
The cables can be connected to the sensor in any order.
Connection cable: 2 x 0.4 - 1.5 mm²
The cable ends are connected to the ECL 310 controller in common
ground terminal and in terminal 29.
S 22 med electronic control of both circuits (App. A266)
From factory the controller is electrically wired to sensors, pump and
actuators according to the diagram to the right.
Mounting of sensor for DHW (ESMU)
Sensor pocket and sensor are factory-mounted in the unit and elec-
trically wired to the controller in common ground terminal and in
terminal 26.
Other sensors
Other supply and return ow sensors are also mounted and electrically
wired to the controller from factory.
Mounting of pumps
The circulation pump P1 is electrically wired to the controller in
terminal N and terminal 11.
The P2 for the heating circuit is electrically wired to the controller
in terminal N and terminal 12.
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. Locking is achieved by pressing the lock up.
ECL Comfort 310 base part
Common ground
terminal
Lock / pin
ESMU

7369053-0SIBC VI.HB.C1.00 © Danfoss 5/02 1
Instructions
VM2, VB2 2-way
065R9074
065R9074
DN L(mm)
15 65
20 70
25 75
32 100
40 110
50 130
DN L1(mm)
15 131
20 142
25 159
32 196
40 196
50 228
DN L2(mm)
15 139
20 154
25 159
32 184
40 294
50 330
DN L3(mm)
15 69
20 74
25 79
32 104
40 114
50 134
VM2 VB2
Manual override
Instructions
AVQM, AVQMT – PN 16, 25 / DN 15-50
73695050DH-SMT/SI VI.DB.T2.1N©Danfoss 09/2009 1
DN 15-3 2 DN 15- 50 DN32-50 DN 15-5 0 DN32-50 DN 15-5 0 D N 32-50
∆p= 0.2 ∆p = 0.2 ∆p = 0.2 ∆p= 0. 2 ∆p= 0.2 ∆p = 0.2 ∆p = 0.2
AVQM (PN 16) AVQM(PN 25) AVQMT(PN 25) AVQMT/AVT(PN 25)
ENGLISH Flow(and temperature) controller with integr ated control
valve AVQ M, AVQMT www.danfoss.com Page 7
DANSK Flow- (og temperatur-)regulatorme d indbygget motorventil
AVQM, AVQM T www.danfoss.dk Side 9
DEUTSCH Volumenstrom(und Temperatur-) Regler mit Motorstell ventil
AVQM, AVQM T www.danfoss.de Sei te 11
ESPAÑOLRegulad or de caudal (y temperatura) con válvula de control
integradaAVQM, AVQMT www.danfoss.es Página13
SLOVENŠČINA Regulatorpretok a (in temperature)z re gulacijskim ventilom
AVQM, AVQM T www.danfoss.si Str an 15
POLSKI Regulator przepływu (i temperatur y)z z aworem
regulacyjnym AVQM, AVQMT www.danfoss.pl Str ona 17
MAGYAR Térfogatáram(éshőmérséklet)szabályozó, motoros
szabályozó-szeleppel egybeépítve AVQM, AVQMT ww w.danfoss.hu Oldal19
SRPSKI Uputstvo AVQM, AVQMT-PN16, 25/DN 15-50 grejanje.danfoss.com Strana21
Alternative actuator
AMV150 and valve
housing VS2
99
Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR
General information
PLEASE NOTE! Some models may have a slightly dierent appearance,
but the control function is in principle the same as described below.
Commissioning
Commission the unit in accordance with instructions on page 6 -7.
Filling the system
Filling of water to the heating system must be done according to the
instructions on page 6 (item 5 - GETTING STARTED).
Check and tighten all connections before adding water to the system,
as vibrations during transport may have caused leaks. After having
added water to the system, tighten all the connections before per-
forming leak test.
Then heat up the system, check the connections and tighten once
again if necessary.
Before adding water to the system and rst start-up, check if:
- pipes are connected according to the circuit diagram,
- heat meter is mounted,
- shut-o valves are closed,
- threaded and anged connections are tightened.
Dierential pressure controller (common return pipe
- only Application A266)
The dierential pressure controller, Danfoss AVP-F reduces the high
uctuations in pressure in the district heating network, ensuring a
small and constant operating pressure across the unit. This ensures
optimum operating conditions for the control equipment.
The dierential pressure controller closes on rising dierential
pressure.The dierential pressure controller is preset to a xed value
from factory and should not be adjusted afterwards.
Please refer to enclosed producer instructions for further information.
Instructions AVP-F
Danfoss ECL Comfort 310
The substation is supplied with an Danfoss ECL 310 controller. The ECL
controller is supplied with an ECL Application Key A266.The application
Key contains information about application, language and factory set-
tings, adapted to the type of system, for which it is ordered.
Note! Various applications can be loaded.
The controller is factory-set for local language and the running time for
the actuator (heating circuit) is preset for the actual application.
General controller settings such as “Time and Date” must be entered
during commissioning of the controller. And also the desired supply
ow temperature must be set.
Please refer to enclosed manufacturer instructions for the ECL 210/310
controller to set the required temperature for the heating circuit:
ECL Application Key Box with ECL Comfort 210/310 user guide and
mounting guide, for further information.
We recommend that your order commissioning of the controller with your
local Danfoss representative.
Note, in systems that feature only oor heating it is important that the
supply temperature does not exceed 35°C, and ALWAYS check the in-
structions from the oor supplier ( typically for wooden oors).
Actuator + valve, unit with control of heating- and DHW circuits,
Application A266
For controlling the heating circuit the S 22, A266 is supplied with a
Danfoss AMV 10 actuator with Danfoss valve type VM2, placed on the
primary return ow pipe. The AMV actuator is electrically wired to the
controller from factory.
Please refer to enclosed producer instructions for further information.
Instructions AMV10
Factory setting
The actuator has undergone a functional test and is preset from factory.
In the event of operating disturbances the actuator can be shut o man-
ually in accordance with enclosed instructions, by turning the manual
override knob on top of the actuator clockwise. Please note that the
knob can be“tight”to turn.
8. Adjustment and commissioning, heating circuit

GRUNDFOS MAGNA
Series 2000
MAGNA 25-40, 25-60, 25-100, 32-40, 32-60, 32-100, 40-100(D), 50-100
GRUNDFOS INSTRUCTIONS
Installation and operating instructions
Installation and operating instructions Wilo-Yonos PARA 02/12 4523676-01
The new standard in High Efficiency
GB: Installation and operating instructions Wilo-Yonos PARA
1 General
About this document
The language of the original operating instructions is English. All
other languages of these instructions are translations of the original
operating instructions. These installation and operating instructions
are an integral part of the product. They must be kept readily
available at the place where the product is installed. Strict
adherence to these instructions is a precondition for the proper use
and correct operation of the product.
The installation and operating instructions correspond to the
relevant version of the product and the underlying safety regulations
and standards valid at the time of going to print. EC declaration of
conformity:
A copy of the EC declaration of conformity is a component of these
operating instructions (fig 8). If a technical modification is made on
the designs named there without our agreement or the declarations
made in the installation and operating instructions on
product/personnel safety
are not observed, this declaration loses its validity.
2 Safety
These operating instructions contain basic information which must
be adhered to during installation, operation and maintenance.
For this reason, these operating instructions must, without fail, be
read by the service technician and the responsible
specialist/operator before installation and operation.
It is not only the general safety instructions listed under the main
point “safety” that must be adhered to but also the special safety
instructions with danger symbols included under the following main
points.
Wilo-Yonos PARA
Variable pressure
Max. pos.
Venting
Vertical pos.
Constant pressure
Max. pos.
Pump - Wilo Stratos PARA / Yonos PARA (system with ECL)
The pump is factory connected to the ECL controller.
On systems with ECL controller turn the red switch to the right (con-
stant curve) and set it to “Max. pos.”initially. Then set the pump to the
lowest possible position, depending on the heating requirement for
the building - taking into account aspects such as cooling and power
consumption.
Venting: The pump features a built-in venting function, which can
be used when the system needs to be bled. Turn the red switch to
the vertical position. The pump will then run a venting routine that
lasts 10 minutes. There may be some noise during this phase. Once
the 10-minute period is nished, reset the pump according to the
instructions above.
For additional information, see the manual: Wilo Stratos PARA /
Yonos PARA.
Summer operation (all pump types)
Outside the heating period, the pump will be disconnected automati-
cally from the heating system. During the summer period, the control-
ler will start the pump for a minute at least once every three days to
prevent the pump from blocking.
Start-up after summer operation - venting
Please note that it may be necessary to vent the system again.To vent
the system, use the vent valve in the substation or on the radiators
and, if appropriate, the air valve at the highest point of the system.
Alternative pump - Grundfos Magna / Alpha2 (system with ECL)
The pump ist factory-set to control mode AutoADAPT without au-
tomatic nicht-time duty. The automatic night-time duty function is
not to be used.
On systems with ECL select control mode: constant-pressure con-
trol (see chapter on “Setting of control mode”) and then the set-
point is adjusted to the actual system characteristics.
Please see enclosed instructions:
GRUNDFOS MAGNA, GRUNDFOS INSTRUCTIONS
or GRUNDFOS ALPHA2
Please note, that the system cannot be vented through the pump.
Constant pressure
Max. pos.
Venting
Vertical pos.
Variable pressure
Max. pos.
or
or
10
Instructions for installation and use S 22
DKDHR VI.IE.D1.02 Danfoss District Energy

Data sheet
Three point controlled actuators
AMV 10, AMV20, AMV 30
AMV 13, AMV 23, AMV 23 SU,AMV 33 - spring return function
DH-SMT/ SI ED.95.N5.02 © Danfoss 05/2007 1
Description
AMV 10 A MV 13 AMV20, AMV 30 AMV 23 (23 SU), AMV 33
The actuators with or without safety func tion are
available for 3-point controls. The spring return
actuators can be used to provide safety shut off
on power failure. They are used with VS2, VM2,
VB2,VMV an d AVQMvalves.
In addition to basic function such as manual
control and position indication, the actuators are
also equipped with force sensitive switch-off to
ensure that actuators and valves are not exposed
toover load. This function automatically ensures
the self-adjustment of the end positions on the valve.
Main data:
• 24Vand230Vversion
• AMV10,13-spindlespeed14s/m m
• AMV20,23,23SU-spindlespeed15s/mm
• AMV30,33-spindlespeed3s/mm
• springreturnfunction(DIN32730
registration).
Ordering
Type Supply voltage CodeNo.
AMV10 230 V~ 082G3001
AMV10 24V~ 082G3002
AMV20 230 V~ 082G3007
AMV20 24V~ 082G3008
AMV30 230 V~ 082G3011
AMV30 24V~ 082G3012
Springreturn func tion - DIN 32730approval
Type Supply voltage CodeNo.
AMV13 230 V~ 082G3003
AMV13 24V~ 082G3004
AMV23 230V~ 082G300 9
AMV23 24 V~ 082G3040
AMV23SU 230 V~ 082G3041
AMV23SU 24V~ 082G3010
AMV 33 230 V~ 0 82G3013
AMV 33 24V~ 082G3014
Accessoriesfor AMV 20/23, AMV 30/33
Type Code No.
Additionalswitch(2×) 082G3201
Additionalswitch(2×)andpotentiometer(10kΩ) 0 82G3202
Additionalswitch(2×)andpotentiometer(1kΩ) 0 82G3203
7369053-0SIBC VI.HB.C1.00 © Danfoss 5/02 1
Instructions
VM2, VB2 2-way
065R9074
065R9074
DN L (mm)
15 65
20 70
25 75
32 100
40 110
50 130
DN L1(mm)
15 131
20 142
25 159
32 196
40 196
50 228
DN L2(mm)
15 139
20 154
25 159
32 184
40 294
50 330
DN L3(mm)
15 69
20 74
25 79
32 104
40 114
50 134
VM2 VB2
7369220-2 EI.96.A1.00 © Danfoss 02/02 1
1
Instructions
AMV 20, AMV 30
082R9092
082R9092
AMV 20, AMV 30 + VM2, VS2 AMV 20, AMV 30 + AVQM AMV 20, AMV 30 + VB2
2
34
N - 1
N - 3
or
ALPHA2 L
GRUNDFOS INSTRUCTIONS
www.grundfos.com/ALPHA2L
GB Installation and operating instructions
FNotice de montage et de mise en service
EInstrucciones de instalación
y funcionamiento
IIstruzioni di montaggio, uso e
manutenzione
GR    
TR Montaj ve kullanma klavuzu
HBeépítési és üzemeltetési utasítás
PL Instrukcja montau i obsugi
Wilo-Star-Z NOVA
4 160 098-Ed.01/2011-11-Wilo
9. Adjustment and commissioning, DHW circuit - App. A266
Danfoss ECL Comfort 310 - Application A266
The substation is supplied with an Danfoss ECL 310 controller. The
ECL controller is supplied with an ECL Application Key A266, which
is adapted to the type of system, for which electronic control of the
DHW circuit is wanted.
Note! Various applications can be loaded.
The controller is factory-set for local language and the running time
for the actuator (DHW circuit) is preset for the actual application.
General controller settings such as“Time and Date”must be entered
during commissioning of the controller. And also the desired DHW
temperature must be set.
Please refer to the enclosed manufacturer instructions for the ECL
210/310 controller in order to set the required domestic hot water
temperature:
ECL Application Key Box with ECL Comfort 210/310 user guide and
mounting guide, for further information.
We recommend that that your order commissioning of the controller
with your local Danfoss Sales Company.
Actuator + valve, unit with control of the heating and DHW cir-
cuits, Application A266
For controlling the domestic hot water circuit the S 22, A266 is sup-
plied with Danfoss AMV 30 actuator with Danfoss valve housing
type VM2 placed on the primary return ow pipe. The AMV actuator
is electrically wired to the controller from the plant.
Factory-setting
The actuator has undergone a functional test and is preset from
factory.
In the event of operating disturbances the actuator can be shut o
manually in accordance with enclosed instructions, 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 manuals: AMV30 and VM2.
Circulation pump (DHW recirculation)
Start-up of circulation pump
The unit comes standard with a circulation pump, Wilo-Star-Z
Nova.
The pump is electrically connected to the ECL controller from fac-
tory.
Start-up:
• Turn on the water supply
• Open the faucet farthest away in the system and let it run until
no more air is coming out of the faucet
• The pump is controlled by the ECL controller and the pump rotor
space bleeds automatically after a short time in operation. (There
may be some noise during this phase).
For additional information see the manual for Wilo-Star-Z NOVA
Alternatively a Grundfos Alpha2 L 15-40 CIL2 circulation pump may
be tted in the unit. Set the pump to “Constant-pressure curve - in
pos. I II or III, in accordance with manual.
For additional information see the manal for GRUNDFOS ALPHA2 L.
1111
Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR

17
Meter reading
The caretaker/owner must perform visual checking and reading of the
district heating meter at short, regular intervals in accordance with
the maintenance plan, page 13. (Please notat that the meter is not a
part of the delivery from Danfoss).
Service procedures must only be performed by trained, authorised
personnel.
NB! Excessive consumption for whatever reason is not covered by
the Danfoss warranty.
Inspection
The unit should be checked regularly by authorised personnel. Any
necessary maintenance must be performed in accordance with the
instructions in this manual and other sets of instructions.
During service the dirt strainers are to be cleaned – including the lter
on the controller, all pipe connections must be tightened and the
safety valve (pos. 16) must be function tested by turning the lever.
Always lead the blow-o pipes from the safety valves to a drain in
accordance with applicable legislation.
Rinsing/cleaning of plate heat exchanger
To clean the plate heat exchanger, rinse it by running clean water
through the exchanger at high speed and in the opposite direction to
the normal flow. This will remove any dirt deposits that may have built
up in the exchanger. If rinsing with clean water is not sufficient, the ex-
changer can also be cleaned by circulating a cleaning agent approved
by Danfoss (e.g. Radiner Fl cleaning fluid) through the exchanger. Use
an environmentally friendly cleaning fluid, which can be disposed off
through the standard sewer system. After use of a cleaning fluid, the
plate heat exchanger must be rinsed thoroughly with clean water.
Venting
During start-up (of the heating season) always vent the radiator cir-
cuit/heating side, the pump and the unit. To vent the unit, use the
air valve (pos. 17) in the unit. Vent the radiator circuit/heating side
on the bleed screws of the radiators. Vent the pump according to
instructions in the pump manual.
Measures after maintenance work
After maintenance work and before commissioning:
– Check that all screwed connections are tight.
– Check that all safety features, covers, that were removed, have been
replaced properly.
– Clean the working area and remove any spilled materials.
– Clear all tools, materials and other equipment from the working area.
– Connect to energy supply and check for leaks.
– Vent the system.
– Carry out any necessary adjustment again.
– Make sure that all safety features on the device and the system work
properly.
Cooling / Return temperature reading
Cooling – i.e. the dierence between the supply and return tem-
perature of the district heating water – has a signicant eect on
overall energy economy. Please note that the district heating return
temperature is directly related to the return temperature from the
heating circuit (and the return temperature from the DHW plate heat
exchanger).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 the
supply temperature should not exceed 35°C.
Tightening of connections
When reading the meter check that all connections are tight. If leaks
are found, contact authorized personnel immediately.
10. Operation and maintenance
Air valve
16
12
Instructions for installation and use S 22
DKDHR VI.IE.D1.02 Danfoss District Energy

1313
Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR
11. Maintenance plan
Maintenance plan (recommendations)
*)Enduser/caretaker.
Note! After maintenance work has been carried out all gaskets HAVE to be replaced.
Interval Maintenance work Comments
At least once per month Read meter and check the system for leaks Note the read meter values in a control book - contact authorized person-
nel immediately in case of leaks or other irregularities
At least once a year
Check all connections for leaks If you identify a leak, replace the gaskets and retighten the pipe connec-
tions
Check that the safety valves are functioning correctly. Check the functionality by turning the lever on the safety valves
Check that all components are intact and functioning as
intended
In the event of irregularities, lack of functionality or visible faults and
defects in a component, replace the component in questionn
Clean all dirt lters/strainers in the unit Replace any lters that are not intact
Check that any electrical cables are in serviceable condition
and that it is possible to disconnect the electrical power
supply to the unit
Visual check. Check whether it is possible to disconnect the current to
the unit.
Check the pipes and exchanger for signs of corrosion Visual check
Check that insulation cover, if any, is functioning as intended Check that the insulation ts tightly around the product/unit
Check that the temperature regulators are set in accordance
with the instructions in this manual Follow the instructions in the present manual
Check the functions of all shut-o valves Check that the ball valves open and close as they should

14
Instructions for installation and use S 22
DKDHR VI.IE.D1.02 Danfoss District Energy
12. Troubleshooting
Problem Possible cause Solution
No heat
Dirt strainer in the district heating or
heating return line clogged.
Filter in district heating meter clogged.
Defective or incorrectly set dierential
pressure controller.
Air pockets in the system.
Clean the lter / dirt strainer.
Clean the lter (in consultation with the
district heating plant).
Check the functions of the dierential
pressure controller - if necessary, clean the
valve seat.
Vent the system thoroughly - see the in-
structions
Uneven distribution of heat Air pockets in the system. Vent the installation thoroughly - see the
instructions.
Poor cooling
Insucient heating surface / radiators
too small compared to the total heating
requirement of the building.
Poor utilisation of the existing heating
surface.
Increase total heating surface.
Turn on all radiators and prevent the radi-
ators in the system from becoming warm
at the bottom.
No heat
Defective actuator - or possibly dirt in
the valve housing.
Automatic components/controller
incorrectly adjusted or defective - or
possibly power outage.
The pump is not working.
The pump is set at too low speed of rota-
tion (not all system types).
Air pockets in the system.
Check that the actor is functioning cor-
rectly - clean the valve seat if necessary.
Check that the controller setting is cor-
rect - see the separate instructions for the
controller.
Check the power supply.
Temporarily set the actuator to “manual”
control - see the instructions for the heat-
ing system.
Check that there is a power supply for the
pump, and that it is operating.
Check that there is no air in the pump
housing - see pump manual.
Set the pump to a higher speed - see the
instructions for the heating system.
Vent the installation thoroughly - see the
instructions.
Fundamental
In the event of disruptions to operation , you should fundamen-
tally - before commencing the actual troubleshooting - check
whether:
• the system is correctly connected
• the district heating supply temperature is at its normal level
• the dierential pressure is at its normal level - ask your district
heating supplier if necessary
• there is a power supply to the system - pump and automatics
• the dirt strainer in the district heating supply pipe is clean
• there is air in the system (if the system is vented)

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Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR
Problem Possible cause Solution
DHW*, variations in temperature
Non-return valve in the circulation pipe
defective (leads to mixing - the circula-
tion water pipes become cold during
tapping).
Replace the non-return valve.
Temperature too low / variations in
temperature
Non-return valve in thermostatic mixer
in the bathroom defective - results in hot
and cold water mixing. Please note that
uctuating temperatures may occur at
other tapping points in the system!
NB, Check all mixers in the house for
faults/defects!
Replace the mixer or perhaps only the
non-return valve.
Lack of hot water pressure
Clogged strainer in the cold water meter
or possibly in the cold water supply in
the unit.
Calied heat exchanger
Clean the strainer (cold water meter,
in consultation with the water supply
company).
Replace the heat exchanger.
Long wait for hot water Circulation pump out of order.
Check whether the pump is running -
and whether there is a power supply to
the pump. Make sure that there is no air
in the pump housing.
No hot water
Dirt strainer in the district heating sup-
ply line clogged.
Defective controller.
Defective sensor.
Clean the dirt strainer.
Check controller settings. You may con-
tact Danfoss Redan A/S for further infor-
mation.
Replace sensor.
Hot water temperature too low
As above.
Non-return valve in the circulation pipe
defective (leads to mixing - the circula-
tion water pipes become cold during
As above.
Replace non-return valve.
Hot water temperature too high Defective automatics/controller.
Check controller settings. You may con-
tact Danfoss Redan A/S for further infor-
mation.
Temperature falls during tapping
(lack of capacity)
Air in the capillary tube for the dieren-
tial pressure controller.
Calied plate heat exchanger.
Vent the capillary tube.
Replace the plate heat exchanger

16
Danfoss Redan A/S
District Energy
Omega 7, Søften
DK-8382 Hinnerup
Telephone [phone]
EC-DECLARATION OF CONFORMITY
For CE marking in EU (European Union)
Danfoss Redan A/S, District Energy
DK-8382 Hinnerup
Declares under our sole responsibility that below products including all available power and control options:
VX Solo 22
VX 22 - S 22
Main components: See instruction.
Covered by this declaration is in conformity with the following directive(s), standard(s) or other norma-
tive document(s), provided that the products are used in accordance with our instructions.
EU Directives:
EMC Directive 2004/108/EEC
EN 61000-6-1 2007 Electromagnetic compatibility- Generic standard: Immunity for residential, commercial and light
industry.
EN 61000-6-2 2005 Electromagnetic compatibility- Generic standard: Immunity industry.
EN 61000-6-3 2007 Electromagnetic compatibility- Generic standard: Emission for residential, commercial and light
industry.
EN 61000-6-4 2007 Electromagnetic compatibility- Generic standard: Emission industry.
Machinery Directive 2006/42/EEC
EN ISO 14121-1 Safety of machinery -- Risk assessment
EN 60204-1-Safety of machinery - Electrical equipment of machines — Part 1: General requirements
PED Directive 97/23/EEC
Conformity assessment procedure followed: Module A - Internal control of production
All substations that falls under Article 3 §3 and category 1 shall not be CE-marked according to this directive
CE marked affixed year 2010
Approved by:
Place and date of issue: Hinnerup, April 24th, 2012
Name: Thavarupan Perinpam
Title: Quality and Lean Manager
Instructions for installation and use S 22
DKDHR VI.IE.D1.02 Danfoss District Energy
13. EU Declaration of Conformity

1717
Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR
14. Commissioning Certicate
Commissioning certicate
The unit is the direct link between the district heating supply network and the household piping system. All supply pipes and the pipes in
the household piping system must be checked and rinsed before commissioning. Once the system has been lled with water, all pipe con-
nections must be retightened before performing pressure test for leaks. The dirt strainers must be cleaned and the unit must be adjusted
in accordance with the instructions in this manual.
It is important to comply with all technical regulations and the applicable legislation in every respect.
Installation and commissioning must only be performed by trained, authorised personnel.
The unit is checked in the factory for leaks before delivery. Leaks are however possible due to vibrations caused by transport, hand-ling and
heating of the system and therefore it is important to check all connections and to retighten if necessarys before commissioning.
Please note that the connections may feature EPDM gaskets! Therefore it is important that you DO NOT OVER-TIGHTEN the connections.
Over-tightening may result in leaks. Leaks caused by ove-rtightening or failure to retighten connections are not covered by the warranty.
To be lled-out by the installer.
This unit has been retightened, adjusted and commissioned
on the: by installer:
Date/Year Company name (stamp)

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Instructions for installation and use S 22
DKDHR VI.IE.D1.02 Danfoss District Energy

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Instructions for installation and use S 22
Danfoss District Energy VI.IE.D1.02 DKDHR

Danfoss Redan A/S · District Energy · Omega 7, Søften · DK-8382 Hinnerup
Tel.: [phone] · Fax: [phone] · [e-mail] · www.redan.danfoss.dk
VI.IE.D1.02 Produced by Danfoss A/S © 09/2012