Viessmann DN25B Installation, Start-Up And Service Instructions Manual Download Page 1

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997692210VIEUS0x-mub-en – V01 05/2014

Solar-Divicon, DN25B

Installation, Start-up and
Service Instructions

For use by the heating contractor

Please file in Service Binder

Summary of Contents for DN25B

Page 1: ...997692210VIEUS0x mub en V01 05 2014 1 Solar Divicon DN25B Installation Start up and Service Instructions For use by the heating contractor Please file in Service Binder ...

Page 2: ...alist 11 4 2 Preparation for flushing specialist 13 4 3 Flushing and filling specialist 13 4 4 Setting the solar loop flowrate specialist 15 5 Cleaning 16 6 Maintenance and decommissioning specialist 16 6 1 Partial draining of the solar installation specialist 17 6 2 Complete draining of the solar installation specialist 17 6 3 Replacing the pump specialist 18 6 4 Replacing the gaskets in the sola...

Page 3: ...g product 1 2 Designated use The solar station is a pre assembled fitting assembly checked for tightness and used for recirculating the solar fluid in a closed loop solar circuit The solar station must only be used in solar thermal systems as pumping station in the solar circuit taking into consideration the technical limit values indicated in this manual The station may only be assembled indoors ...

Page 4: ...bserve the instructions regarding the pressure relief valve The pressures calculated by the installation planner for the expansion tank and the operating pressure of the installation must be set prior to filling system Material damage due to mineral oils Mineral oil products permanently damage the EDPM sealing elements resulting in a loss of their sealing characteristics We cannot be held liable f...

Page 5: ...ion Propylene glycol is hazardous in case of ingestion It is irritant in case of eye or skin contact Wear chemical resistant protective gloves and safety glasses with side shields when handling propylene glycol mixtures Observe the instructions of the antifreeze manufacturer It often happens that solar thermal systems cannot be completely drained after flushing Thus there is a risk of frost damage...

Page 6: ... Ball valve with temperature gauge in the return equipped with replaceable spindle blue 1 3 Pressure relief valve 87 psi 6 bar 1 4 Fill valve 1 5 Connection for the expansion tank 1 6 Pressure gauge 87 psi 6 bar 2 Solar pump 3 1 Ball valve in flowmeter 3 2 Drain valve 3 3 Flowmeter 3 4 Return from the storage tank 4 1 Supply to the storage tank 4 2 Airstop equipped with manual bleeder 5 2 Ball val...

Page 7: ... the mounting location and level the unit Mark the mounting hole locations next to the temperature gauges onto the mounting surface 4 Drill the holes into the mounting surface and fasten the solar station to the wall by means of the enclosed screws and if required the enclosed wall anchors Material damage due to high temperatures Since the solar fluid may be very hot near the collector the fitting...

Page 8: ...plugged on individual parts and all the way into the housing of the cutting ring fitting First tighten the union nut manually Tighten the union nut by rotating it by one full turn Secure the housing of the cutting ring fitting against distortion in order to avoid damaging the sealing ring 6 Connect a discharge line to the connection 1 3 at the pressure relief valve Conduct the discharge line into ...

Page 9: ...ntentional start of the pump motor 10 Connect the 120V power supply from the solar controller to the solar station pump The controller must be provided on site Observe the separate instructions of the controller Wiring can run in the slots in the back foam insulation panel of the solar station Observe all local electrical code requirements The assembly of the solar station is now complete and you ...

Page 10: ...or skin contact Wear chemical resistant protective gloves and safety glasses with side shields when handling propylene glycol mixtures Observe the instructions of the antifreeze manufacturer Risk of frost It often happens that solar thermal systems cannot be completely drained after flushing Thus there is a risk of frost damage when flushing with water Therefore the solar thermal system should onl...

Page 11: ... be present out of the system use only flush and fill stations equipped with suitable micro filters Ball valve with integrated check valve Normal direction of flow in the picture downstream 0 45 90 Check valve in operation through flow in flow direction only normal operating position Check valve not in operation through flow in both directions use this positioning to help purge air during intial c...

Page 12: ...irstop and can be discharged via the vent plug 4 2 Danger of scalding due to escaping vapor The escaping solar fluid can have a temperature of more than 212 F 100 C and cause scaldings Carefully open the vent plug and close it again as soon as medium escapes Venting the solar thermal system after commissioning Immediately after installation vent the solar thermal system daily and then weekly or mo...

Page 13: ...valve 3 1 in the flowmeter 4 Connect the flush and fill station to the solar station Pressure hose to the fill connection 1 4 Flushing hose to the drain connection 3 2 4 3 Flushing and filling specialist 1 Open the fill and drain valves 1 4 and 3 2 2 Put the flush and fill station into operation and keep flushing until clear medium escapes 3 Vent the solar thermal system several times at the vent ...

Page 14: ...re on the pressure relief valve 87 psi 6 bar 5 Check at the pressure gauge if the system pressure is dropping and eliminate any leaks if present 6 Reduce the pressure on the drain valve 3 2 to the system specific pressure 7 Connect the expansion tank to the solar circuit and set the operating pressure of the solar thermal system by means of the flush and fill station for the required expansion tan...

Page 15: ...re to the operating pressure again 12 Remove the hoses of the flush and fill station and screw the the closure caps on the fill and drain valves Note The closure caps are only for protection against soiling They have not been constructed for high system pressures their tightness being guaranteed by the closed ball valves Correct Incorrect 4 4 Setting the solar loop flowrate specialist Scale 1 10 U...

Page 16: ...e product you must read and observe the following safety instructions Risk of electric shock Disconnect all electrical devices in the heating circuit from the power supply before carrying out maintenance work or decommissioning Secure the electrical devices against being switched on again Risk of burns and scalding The valves and fittings may heat up to more than 212 F 100 C During maintenance or ...

Page 17: ...tation and replacement of seals above the ball valves 5 2 and 1 2 1 Perform partial draining as described above 2 Open the check valves in the supply and return ball valves 5 2 and 1 2 by rotating them to the 45 position see page 11 3 To accelerate draining of the solar circuit you can open the bleeding device if present at the highest point of the solar thermal system 4 Dispose of the solar fluid...

Page 18: ...sponds to the operating pressure repeat commissioning as described from page 10 onward 6 4 Replacing the gaskets in the solar station specialist 1 Gaskets below the ball valves Perform partial draining as described in section 6 1 Partial draining of the solar installation specialist Gaskets above the ball valves Drain the solar thermal system completely as described in section 6 2 Complete drainin...

Page 19: ...al system completely as described in section 6 2 Complete draining of the solar installation specialist 2 Disconnect the pipe joints with the solar thermal system 3 To remove the solar station from the support pull out the clip springs sideways using a screwdriver 4 Pull out the station towards the front ...

Page 20: ...d like to install a Solar Divicon solar station The station comprises two check valves 2 x 7 9 inch head 15 8 inch head 2 x 200 mm wc 400 mm wc You use a mixture of water and 40 of propylene glycol as a solar fluid The installation height between the collector and the storage tank is 33 ft 10 m Installation height in ft Temperature difference storage tank collector in R Result The check valves pre...

Page 21: ...Solar Divicon DN25B Installation Start up Service 21 8 Spare parts specialist ...

Page 22: ...le thread NPT Outlet of pressure relief valve female thread Operating data Max admissible pressure 87 psi 6 bar Max operating temperature 248 F 120 C Short term load 320 F 160 C 15 minutes Max propylene glycol content 50 Equipment Pressure relief valve 87 psi 6 bar Pressure gauge 0 87 psi 0 6 bar Check valves 2 x 7 9 inch head 2 x 200 mm wc can be opened Flowmeter 1 10 USgpm 4 38 lpm Solar loop pu...

Page 23: ...Solar Divicon DN25B Installation Start up Service 23 9 1 Pressure drop characteristic Pressure loss ft of head Flow rate USgpm Solar Divicon DN25B ...

Page 24: ...ine in l ft Ventilation collector field Manual bleeder Automatic bleeder No Vented Airstop station Vented Solar fluid type of glycol Antifreeze checked up to F Serial numbers Flow rate UGgpm Station Pump type Controller Pump stage I II III System pressure psig Software version Expansion tank type Initial pressure psig Flow rate reducing position Pressure relief valve Checked Check valves Checked I...

Page 25: ... the functional and safety devices for optimum circuit control The components enable Medium circulation with solar pump Safety against pressure increase Exact flow rate control Flushing filling and draining the circuit Measuring the supply and return temperatures Deaerating the solar loop Shutting off the circuits Preventing gravity circulation Thermal insulation of the components Dimen sions Tota...

Page 26: ... 387 7373 Fax 519 885 0887 www viessmann ca info viessmann ca Viessmann Manufacturing Company U S Inc 45 Access Road Warwick Rhode Island 02886 USA TechInfo Line 1 888 484 8643 1 800 288 0667 Fax 401 732 0590 www viessmann us com info viessmann us com 5516 057 01 05 2014 Solar Divicon DN25B Installation Start up Service ...

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