Buderus Logalux PL750 Installation And Maintenance Instruction
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Buderus Logalux PL750 Installation And Maintenance Instruction

Buderus Logalux PL750 Installation And Maintenance Instruction

Solar combi-tank for dhw and space heating
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Installation and Maintenance
Instruction
Logalux PL750/2 S
Solar Combi-Tank
for DHW and Space
Heating
NOTICE TO HOME OWNER/END
USER OF EQUIPMENT
When the anode rod is not profes-
sionally and annually maintained, the
tank will lose its warranty.
Annual service records must be main-
tained and shown in case of a war-
ranty claim along with an original proof
of purchase.
Refer to page 21 to 25 for annual
maintenance instructions to maintain
tank warranty.
In the Commonwealth of Massachu-
setts this tank must be installed by a
licensed plumber.
Documentation for the
contractor
Please read carefully prior
to installation and mainte-
nance

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Summary of Contents for Buderus Logalux PL750

  • Page 1 Refer to page 21 to 25 for annual maintenance instructions to maintain tank warranty. In the Commonwealth of Massachu- setts this tank must be installed by a licensed plumber. Logalux PL750/2 S Documentation for the contractor Please read carefully prior to installation and mainte- nance...

  • Page 2: Table Of Contents

    Preparation of cleaning of solar combi-tank Cleaning of solar combi- tank Checking of magnesium anode rod Replacement of Magnesium Anode Rod Placing solar tank back in operation after cleaning Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 3: Safety Precautions And Symbol Clarification

    V Use only original Buderus replacement parts. cepted industry practices for the installation and maintenance of the equipment and vari- ous applications of the equipment involved. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 4: Product Description

    V Dispose of packaging of the solar tank in an environ- mental friendly fashion. V A Solar Combi-tank that is being replaced, must be dis- posed of in a suitable fashion. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 5: Product Packaging

    Magnesium anode rod Top tank insulation Top tank cover Dry well sensing port (MB1) for boiler control (FB) Stainless steel heating coil Dry well sensing port (MB2) for solar control (FSS) Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 6: Dimensions And Connections

    M1-8 Used sensoring ports according to system design and used items MB1 FB sensor port for measuring actual DHW temperature MB2 FSS sensor port for solar sensor tank bottom Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 7: Technical Specifications

    100 psi. Install a 100 psi relief valve. 3) Every installation requires the use of a thermal expansion tank and pressure/temperature relief valve in the heating system and solar system. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 8: Glossary Of Measuring Points

    Terminate heating of the Solar Combi- Bottom of tank tank Switch High-flow/Low-flow Middle of tank All hot water functions Open selection of functions Bottom of tank Tab. 2 Overview sensor ports of PL750/2 S Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 9: Transportation

    A Buderus hand dolly can be purchased through your local wholesaler. 3.1.1 Transportation with dolly V Place the hand dolly at the backside of the packaged tank. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 10: Transportation With Overhead Crane

    V Maintain suggested service access dimensions (Æ Fig. 6). 6 720 615 217-08.1RS V Place tank on a level and sufficiently strong floor. Fig. 6 Recommended minimum clearances (in inch/mm) Solar Combi-tank Boiler Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 11: Tank Assembly

    6 720 615 217-13.1RS Fig. 8 Measuring point MB (solar sensor dry well) Sensor Wire Solar temperature sensor Measuring point MB Lower clean-out cover Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 12: For Boiler Control At Mb1 Measuring Point

    V Carefully secure the sensor wire 6 720 615 217-14.1RS Fig. 10 Installation of the system sensors (basic drawing) Temperature Sensor Tension Spring Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 13: Installation Of Tank Kit Components

    T piece with P & T valve Water volume Max. coil input Minimum pipe size ¾ NPT 200 – 400 53 – 103 198,000 Tab. 3 Sizing of the P & T valve discharge line Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 14: Installation Of The Insulation

    V Seal the top cover with a strap and 4 coiled spring pins Front cover strip Top insulation (2 inch/50 mm) [8]. Top insulation (4 inch/100 mm) Insulation clean-out cover Top tank cover Strap with spring pins Bottom insulation Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 15: Water Side Piping Connections

    (e.g. PEX tubing). Cold inlet connection V Use installation materials that can handle Tank drain connection temperatures in excess of 176 °F (80 ° C). DHW recirc connection Logalux PL750/2 S - Changes may be made following technical improvements!
  • Page 16 EK cold water inlet tions. V Check all connections for leaks. V Install proper safety relief valve and thermal expansion vessel to the buffer water tank to ensure safe operation. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 17: Connections For The Ks Solar Pump Station

    V Route the piping with a steady slope down from the air vent. Install an air vent where necessary at every high point in the piping system. (Temperature range up to 302 °F (150 °C)). Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 18: Start-Up And Shut-Down Of Tank

    V Inform the end user regarding annual maintenance pro- cedures to ensure a lifetime of trouble free operation. V Hand all installation documentation to the end user. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 19: System Start-Up

    V Shut down the heating system according to the instructions supplied with the product. In freezing climates and system decommis- sioning: Completely drain the solar combi-tank, also in the lower areas of the tank. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 20: Environmental Protection

    Obsolete products contain raw materials that can be recycled. The components are easily separated and are clearly marked. In this manner the individual components are eas- ily sorted and added into the recycling and disposal stream. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 21: Maintenance

    (Fig. 3, page 6). V Remove DHW tank sensor (FB) and insertion wire from dry well. V Remove hex. bolts, hand-hole cover, magnesium anode rod and hand-hole gasket. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 22: Cleaning Of Solar Combi- Tank

    In case of extreme hard and solid deposits, you can remove these through a chemical cleaning. We recom- mend you have a professional perform the chemical clean- ing. Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 23: Checking Of Magnesium Anode Rod

    V When the diameter is reduced to ½" (15 mm), replace the anode rod. V Install the new anode rod back into the tank. Fig. 17 Check magnesium anode rod Clean-out cover Magnesium anode rod Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 24: Replacement Of Magnesium Anode Rod

    Fig. 18 Replacement of magnesium anode rod Magnesium anode Gasket Clean out cover Insulating sleeve Flat washer Lock washer Hex head nut M8 Ground wire eyelet Lock washer M8 nut Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 25: Placing Solar Tank Back In Operation After Cleaning

    V Check all connections and clean-out cover for leaks. Ground wire V Install insulation piece and top tank cover. Gasket clean-out cover Insertion wire DHW sensor Ground wire eyelet Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 26: Replacement Parts

    Replacement parts for PL750/2S Position Fig. 20, page 26 Part Nr. Description 7747022601 Buderus Logalux PL750/2 S Tab. 4 Solar Combi-Tank PL750/2 S 6 720 615 217-01.1RS Fig. 20 Solar Combi-Tank PL750/2S Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 27: Heat Exchanger

    Connection pipe red 490 mm long for PL750/2S/W 67900733 Heating lance Hex. Screw ISO4017-M12x30-8 Washer DIN125-A13-A3K 63018202 Insertion wire for temperature sensor cable Tab. 5 Replacement parts for heat exchanger Solar-combi tank PL750/2 S Logalux PL750/2 S - Changes may be made following technical improvements!
  • Page 28 Replacement Parts 99909961-00-Wärmetauscher PL750_2S-1000_2S Fig. 21 Heat exchanger solar-combi tank PL750/2 S Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 29: Clean-Out Cover And Anode Rod Assembly For Pl750/2S

    Clean-out cover PL750/2 S 63043454 Gasket 120x152x10 mm 63018201 Insertion wire for temperature sensor cable Tab. 6 Available spare parts for clean-out cover and anode for PL750/2 S Tank Logalux PL750/2 S - Changes may be made following technical improvements!
  • Page 30 Replacement Parts 6 720 615 217-03.1RS Fig. 22 Clean-out cover and anode assembly for PL750/2 S Logalux PL750/2 S - Changes may be made following technical improvements!

  • Page 31: Insulation Jacket For Pl750/2S Tank

    Jacket Cover Strip - Front 63004262 Jacket Cover Strip - Back Consisting of: 3x2 Jacket Cover Strips 100 mm Strap with spring pins Tab. 7 Available spare parts for PL750/2 S Insulation Jacket Logalux PL750/2 S - Changes may be made following technical improvements!
  • Page 32 Replacement Parts 6 720 615 217-02.1RS Fig. 23 Insulation Jacket for PL750/2 S Logalux PL750/2 S - Changes may be made following technical improvements!
  • Page 33 Notes Logalux PL750/2 S - Changes may be made following technical improvements!
  • Page 34 Notes Logalux PL750/2 S - Changes may be made following technical improvements!
  • Page 35 Notes Logalux PL750/2 S - Changes may be made following technical improvements!
  • Page 36 Bosch Thermotechnology Corp. 50 Wentworth Avenue Londonderry, NH 03053 Tel. 603-552-1100 Fax 603-584-1681 www.buderus.net U.S.A. Products manufactured by Bosch Thermotechnik GmbH Sophienstrasse 30-32 D-35576 Wetzlar www.buderus.de Bosch Thermotechnology Corp. reserves the right to make changes without notice due to continuing...

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