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22 DKDHR 

VI.GP.P2.02 

Danfoss District Energy

Instructions for installation and use 

VX Solo II substations

10.0  Adjustment and commissioning, filling the system and differential pressure controller

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 unit in accordance with the instructions on pages 

17-21.

Filling the system

Filling of water to the heating system must be done through con-

nection to an exterior cold water supply.

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 first start-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.

Filling - (Note, by means of exterior cold water supply):

If the pressure drops below 1 bar, water must be added to the system. 

The operating pressure should never exceed 1.5 bar. 

(The safety valve opens at 3 bar)

1.  Pump must be switched off when water is added to the system.

2.  Fill heat exchanger and system with water until the manometer 

  shows a working pressure, which corresponds to the system 

   5 m (approx. 1.5 - 2.0 bar)

3.  Vent the system completely.

4.  Start the pump.

5.  For substations, which include zone valve, remember to remove   

      the red split on the position indicator of the zone valve.

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.

Differential pressure controller

(Standard on systems with self-acting thermostatic valve).

The differential pressure controller reduces the fluctuating pressure 

in the district heating network to a small and invariable operating 

pressure in the substation.

The required room temperature is controlled on your radiator ther-

mostats.

Differential pressure controller AVPL

AVPL is a self-acting differential pressure controller for PN 16 with 

adjustable differential pressure setting and the differential pressure 

controller can be set at any differential pressure between 5 kPa and 

25 kPa (0.05 bar and 0.25 bar).

The preset factory setting of the controller is 10 kPa (0.1 bar).

The differential pressure can be set by means of an Allen key NV 3. 1 

turn corresponds with 1 kPa (0.01 bar).

The controller settings can be changed in accordance with the en-

closed producer instructions: 

Differential pressure controller (PN 16) AVPL

Return mounting, adjustable setting

7369316-0  SIBC

VI.CB.T1.6K © Danfoss 05/03

1

Instructions

AVPL 1.0/1.6

1

5

3

4

7

r

kPa

20

25

19

24

18

23

17

22

16

21

15

20

14

19

13

18

12

17

11

16

10

15

9

14

8

13

7

12

6

11

5

10

4

9

3

8

2

7

1

6

0

5

2

   6

AVPL

Summary of Contents for VX Solo II Series

Page 1: ...Danfoss District Energy MAKING MODERN LIVING POSSIBLE VX Solo II Instructions for installation and use ...

Page 2: ...eral 19 10 0 Adjustment and commissioning filling the system and differential pressure controller 22 11 0 Adjustment and commissioning Heating circuit 24 12 0 Circulation pump Heating circuit 30 13 0 Adjustment and commissioning DHW cylinder circuit 31 14 0 Pump DHW cylinder circuit 32 15 0 Maintenance 33 15 1 Maintenance schedule recommendations 34 16 0 Troubleshooting 35 16 1 Troubleshooting Hea...

Page 3: ...on of pipes can be established both in the top or in the bottom of the substation Please note that the ball valves are supplied loose with the substation for mounting on site Cylinder return Cylinder supply Cylinder return HE return HE supply DH supply DH returnf 17 16 1 30 8 4 24 Primary Secondary DHW 24 1 Plate heat exchanger HE 4 Diff pressure controller 5 Strainer 7 Ball valve 8 Circulation pu...

Page 4: ... as con nection of pipes can be established both in the top or in the bottom of the substation Please note that the ball valves are supplied loose with the substation for mounting on site 1 Plate heat exchanger HE 5 Strainer 7 Ball valve 8 Circulation pump HE 11 Safety valve HE 13 Thermometer 14 Pockets for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting ...

Page 5: ...tion for mounting on site Primary Secondary FH supply FH return HE return HE supply DH supply DH return 16 DH Supply HE Supply HE Return DH Return FH Supply FH Return Supply limit 1 Plate heat exchanger HE with insulation 5 Strainer 6 Non return valve 7 Ball valve 8 Circulation pump HE 10 Circulation pump FH 11 Safety valve HE 13 Thermometer 14 Pocket for pressure gauge 15 Manometer 16 Expansion v...

Page 6: ...ifferential pressure controller with flow limitation AVPB F 5 Strainer 7 Ball valve 8 Circulation pump HE 11 Safety valve HE 13 Thermometer HE Supply HE Return 14 Pockets for pressure gauge 15 Manometer 16 Expansion vessel 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 25 Controller Danfoss ECL Comfort 210 A237 26 Outdoor sensor ESMT 27 Sensor ESMC 29 Actuator AMV 150 HE 30 2 way ...

Page 7: ...substation for mounting on site Cylinder supply Cylinder return HE return HE supply DH supply DH return 16 DH Supply HE Supply HE Return DH Return Cylinder Supply Cylinder Return Supply limit 25 1 57 31 29 30 8 32 24 23 Sensor pocket for heat meter 24 Fitting piece for heat meter 25 Controller Danfoss ECL Comfort 210 A247 26 Outdoor sensor ESMT 27 Sensor ESMC 28 Immersion sensor ESMB 29 Actuator A...

Page 8: ... the bottom of the substation Please note that the ball valves are supplied loose with the substation for mounting on site Storage cylinder Supply limit Cylinder supply Cylinder return 33 Actuator AMV 150 FH 34 Three way valve VMV 57 Safety thermostat FH circuit Options 57 Safety thermostat HE circuit 24 Fitting piece for heat meter 25 Controller Danfoss ECL Comfort 210 A260 26 Outdoor sensor ESMT...

Page 9: ...bstation for mounting on site Storage cylinder Supply limit Cylinder supply Cylinder return 33 Actuator AMV 150 FH 34 Three way valve VMV 57 Safety thermostat FH circuit Options 57 Safety thermostat HE circuit 26 Outdoor sensor ESMT 27 Sensor ESMC 28 Immersion sensor ESMB 29 Actuator AMV 13 HE 30 Flow controller with integrated control valve AHQM 31 Actuator AMV 150 Cylinder 32 Flow controller wit...

Page 10: ...blished both in the top or in the bottom of the substation Please note that the ball valves are supplied loose with the substation for mounting on site Storage cylinder Supply limit Cylinder supply Cylinder return Cylinder supply Cylinder return 24 Fitting piece for heat meter 25 Controller Danfoss ECL Comfort 210 A237 26 Outdoor sensor ESMT 27 Sensor ESMC 28 Immersion sensor ESMB 29 Actuator AMV ...

Page 11: ...ting on site Primary Secondary Cylinder supply Cylinder return HE return HE supply DH supply DH return 16 DH Supply HE Supply HE Return DH Return Cylinder Supply Cylinder Return Supply limit 25 1 33 29 30 10 34 24 11 1 Plate heat exchanger HE 5 Strainer 6 Non return valve 7 Ball valve 8A Circulation pump DHW 10 Circulation pump HE 11 Safety valve HE 13 Thermometer 14 Pockets for pressure gauge 15 ...

Page 12: ...the substation for mounting on site Storage cylinder Supply limit Cylinder supply Cylinder return FH supply FH return Primary Secundary FH supply FH return HE return HE supply DH supply DH return Cylinder supply Cylinder return Secundary Primary 16 57 4 8 24 1 10 25 30 29 34 33 1 Plate heat exchanger HE 5 Strainer 6 Non return valve 7 Ball valve 8 Circulation pump HE 8A Circulation pump DHW 10 Cir...

Page 13: ...m Connections Order 1 District heating DH supply 2 District heating DH return 3 Heating HE Cylinder return 4 Heating HE Cylinder supply 5 Cylinder HE supply 6 Cylinder HE return Connections size DH G ET DCW DHW HE G IT VX Solo II H2WP H2WS Dimensions Dimensions without cover H861 x W650 x D365 mm Dimensions with cover H861 x W700 x D381 mm Connections Order 1 District heating DH supply 2 District ...

Page 14: ...end regular inspections of the substation ideally in connection with readings of the district heating meter Pay special attention to any leaks and an excessively high return temperature in the district heating circuit poor cooling of the district heating water Cooling i e the difference between the supply and return temperature of the district heating water has a significant ef fect on the overall...

Page 15: ...twillbesetbytheinstallerinconnectionwiththecom missioning butitmaybenecessarytoadjustitsubsequentlydepend ing on the outdoor temperature Approximate thermostat scale setting Pos 1 20 C 2 30 C 3 40 C 4 50 C 5 60 C 6 70 C PleasenotethatalabelontheTCthermostatwillindicatethetemperature range NB For houses that are heated exclusively with floor heating The supply temperature should typically be set to...

Page 16: ...ing in accordance with the local regulations for disposal of used packaging materials Thesubstationismadeofmaterialsthatcannotbedisposedoftogether with household waste Closeallenergysourcesanddisconnectallconnectionpipes Disconnect anddismantletheproductfordisposalinaccordancewiththeapplicable local regulations for the disposal of the individual components Connection It must be possible to cut off...

Page 17: ... 20 5 IMPORTANT Tighten all pipe connections as they may have loosened during transport and handling do NOT overtighten 6 On systems that feature a safety valve establish a drain con nection in compliance with the applicable legislation 7 Fill the heat exchanger the system with water according to the instructions on page 22 until the manometer shows a working pressure which corresponds to the syst...

Page 18: ...g the radiator thermostats Alternatively the heating circuits can be regulated using fully auto matic Danfoss ECL weather compensation equipment a Danfoss ECL controller in combination with electronic actuator s The ECL controller acts as the brain of the heating system It lets you easily control and optimise system performance and operation VX Solo II substations are also fitted with pump s As an...

Page 19: ...ten 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 itisimportantthatyouDONOTOVERTIGHTENtheunion nuts Over tightening may result in leaks Leaks caused by over tightening or failure to retighten connections are not cover...

Page 20: ...lations Remember to check and tighten all pipe connections before commissioning the heat meter Mounting of temperature sensor The heat meter notpartofthedelivery is supplied with temperature sensors for measuring the supply and return flow temperatures TheVX Solo II substations are prepared for mounting of temperature sensors with M10x1 connection see photo to the right The supply flow sensor is m...

Page 21: ...r Connection cable 2 x 0 4 1 5 mm Connect the cable ends to ECL controller in clamps 29 and 30 Mounting of immersion sensor ESMB 12 The immersion sensor for accurate temperature measurement and control in the cylinder is supplied separately and must be mounted and connected to the controller on site Temperature range immersion sensor 0 to 100 C Temperature range immersion pocket 0 to 180 C 2 wire ...

Page 22: ...ater until the manometer shows a working pressure which corresponds to the system height 5 m approx 1 5 2 0 bar 3 Vent the system completely 4 Start the pump 5 For substations which include zone valve remember to remove the red split on the position indicator of the zone valve If system pressure drops dramatically within a short time heating system should be examined for leakage this includes chec...

Page 23: ...es the best possible operating conditions The control valve opens on falling differential pressure to maintain constant differential pressure and closes on rising differential pres sure or when set max flow is exceeded The differential pressure controller is preset from factory and should not be adjusted afterwards The controller has a control valve with adjustable flow restrictor and flow setting...

Page 24: ...actuator of the zone valve is switched on by an exter nal contact from the room thermostat and starts to open or close the valve The actuating movement is achieved by means of an electrically heated expansion element When the heating current is switched off the actuator shuts or opens the valve The actuator is equipped with a visual position indicator to show the open or closed position of the val...

Page 25: ...e 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 flow temperature must be set Please refer to the enclosed manufacturer instructions for the ECL 210 310 controller in order to set the required temperature for the heating circuit ECLApplicationK...

Page 26: ...ng AHQM AMV 13 607 6 DQIRVV QVWUXFWLRQV 09 5 5 09 90 96 09 940 09 9 1 1 Press and hold the button on the bottom side of the actuator during manual override Manual override AMV 150 Instructions AMV 150 73691180 DH SMT SI VI KU N2 1J Danfoss 01 2008 1 ENglIsh Actuators for three point control AMV 150 www danfoss com Page 2 DANsK Motorer til 3 punkts styring AMV 150 www danfoss dk Side 3 DEUTsCh Stel...

Page 27: ...olei AMV 150 www danfoss com Lpp 5 MAgYAR Szelepmozgatók hárompontos szabályozáshoz AMV 150 www danfoss com 6 oldal ČEsKY Servopohony s tříbodovým regulačním signálem AMV 150 www danfoss cz Strana 6 POlsKI Siłowniki sterowane sygnałem 3 punktowym AMV 150 www danfoss pl Strona 7 РУССКИЙ Электроприводы для трехпозиционного регулирования AMV 150 www danfoss ru Страница 7 AMV 150 AMV 150 AMV 150 VS2 D...

Page 28: ...nfoss ECL 210 or ECL 310 the heating circuit s can be supplied with safety function safety thermostat type Jumo AT actuator AMV 13 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 house hold piping HE supply on site Please see enclos...

Page 29: ...e system If the recommended pump setting does not give the desired distri bution of heat in the rooms of the house change the pump setting to the shown alternative For further infomation about pump settings please refer to the en closed Grundfos instructions ALPHA2 L Installation and operating instructions Summer operation SubstationswithDanfossT CThermostat Inthesummer youcanstopthepumpbyswitchin...

Page 30: ...s Setting of pump according to the enclosed instructions ALPHA2 GRUNDFOS INSTRUCTIONS Summer operation SubstationwithT Cthermostat In periods without heating demand the pump can be switched of on the switch and the shut off valve summer valve S in top of the sta tion can be closed during this period Switch on the pump for a short period at least once per month For start up follow the above start u...

Page 31: ...ionKeyBoxwithECLComfort210 310userguideand mounting guide for further information We recommend that your order commissioning of the controller with your local Danfoss Sales Company Below schedule states whether the VX Solo II is supplied with connection pipes for DHW cylinder on the primary side or the se condary side and whether the DHW temperature in the cylinder is controlled by the electronic ...

Page 32: ... selector switch is centre position default Select setting 2 and 3 only if the pump setting does not meet actual system requirements Please see enclosed instructions GRUNDFOS UPS Press and hold the button on the bottom side of the actuator during manual override Manual override AMV 150 Instructions AMV 150 73691180 DH SMT SI VI KU N2 1J Danfoss 01 2008 1 ENglIsh Actuators for three point control A...

Page 33: ...n the secondary side If it becomes necessary to clean the exchanger with acid this can be done as shown on the drawing to the right Brazed plate heat exchangers can withstand rinsingwithadiluteacidsolution e g 5 formic aceticorphosphoric acid Measures after maintenance work After maintenance work and before commissioning Check that all screwed connections are tight Checkthatallsafetyfeatures cover...

Page 34: ...eaks If you identify a leak replace the gaskets and retighten the pipe connec tions Check that the safety valve on the cold water supply is 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 t...

Page 35: ...oller clean valve seat if required Defective sensor Replace sensor Defektive actuator Check the functioning of the actuator Defective motor valve or possibly dirt in the valve housing Check the functions of the motor valve clean valve housing if required Automatic controls wrongly set or defec tive possibly power failure Check if the setting of the controller is correct see separate instructions C...

Page 36: ...or correctly Poor cooling Strainer clogged Clean strainer Too small heating surface too small radiators compared to the total heating requirement of the building Increase total heating surface Poor utilization of existing heating surface Make sure that the heat is distributed evenly across the full heating surface open all radiators and keep the radiator in the system from heating up at the bottom...

Page 37: ...id solution or replace heating element Inadequate cylinder capacity Wait for heating loading of the cylinder You may check the specifications of the manufacturer conc cylinder capacity Long waiting time Circulation pump out of operation Check whether the pump is running whether the pump is receiving power control that there is no air in the pump housing see pump manual Temperature too low See No d...

Page 38: ...y tubes Automatic controls wrongly set Check that the controller has been cor rectly set see separate instructions Immersion sensor placed incorrectly Place immersion sensor correctly in ac cordance with the manufacturer instruc tions for the cylinder You may contact Danfoss Redan A S for further information Calified heating element Clean DHW cylinder with acid solution or replace heating element ...

Page 39: ... EEC EN 61000 6 1 2007 Electromagnetic compatibility Generic standard Immunity for residential commercial and light industry EN 61000 6 2 2007 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 Emissio...

Page 40: ...40 DKDHR VI GP P2 02 Danfoss District Energy Instructions for installation and use VX Solo II substations ...

Page 41: ... 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 substation 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 a...

Page 42: ...42 DKDHR VI GP P2 02 Danfoss District Energy Instructions for installation and use VX Solo II substations ...

Page 43: ...43 43 Danfoss District Energy VI GP P2 02 DKDHR Instructions for installation and use VX Solo II substations ...

Page 44: ...Produced by Danfoss Redan A S 06 2014 VI GP P2 02 Danfoss Redan A S District Energy Omega 7 Søften DK 8382 Hinnerup Tel 45 87 43 89 43 Fax 45 87 43 89 44 redan danfoss com www redan danfoss dk ...

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