Buderus Logalux PL750 Technische Daten

Documentation for the

contractor

Please read carefully prior

to installation and mainte-

nance

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.

Installation and Maintenance

Instruction

Solar Combi-Tank

for DHW and Space

Heating

Logalux PL750/2 S

6 720 615 217-00.1RS

6 720 615 191 - 08/2008 US

Table of Contents

Logalux PL750/2 S - Changes may be made following technical improvements!

Table of Contents

1 Safety Precautions and symbol clarification 3

1.1 Safety Precautions 3

1.2 Symbol Clarification 3

2 Product Description 4

2.1 Applications 4

2.2 Intended Use 4

2.3 Guidelines for Installations 4

2.4 Product Disposal 4

2.5 Product Packaging 5

2.6 Dimensions and Connections 6

2.7 Technical Specifications 7

2.8 Glossary of measuring points 8

3 Transportation 9

3.1 Transportation Means 9

3.1.1 Transportation with dolly 9

3.1.2 Transportation with overhead crane 10

3.2 Product Placement 10

4TankAssembly 11

4.1 PL750/2S Placement and

Installation 11

4.1.1 Installation of tank feet 11

4.1.2 Installation of tank temperature sensor at

MB2 Measuring Point 11

4.1.3 Installation of tank temperature sensor

for boiler control at MB1 measuring point 12

4.1.4 Installation of tank temperature sensors

M1 – M8 12

4.1.5 Installation of tank kit components 13

4.2 Installation of the Insulation 14

4.3 Water Side Piping Connections 15

4.4 Connections for the KS Solar Pump Station 17

5 Start-up and Shut-down of Tank 18

5.1 Start-up Operations 18

5.1.1 Operational information from contractor 18

5.1.2 System start-up 19

5.2 Decommissioning of the system 19

5.2.1 Shutdown of solar hot water tank 19

5.2.2 Shutdown of heating system in cold

weather conditions 19

5.2.3 Environmental protection 20

6 Maintenance 21

6.1 Preparation of cleaning of solar combi-tank 21

6.2 Cleaning of solar combi- tank 22

6.3 Checking of magnesium anode rod 23

6.4 Replacement of Magnesium Anode Rod 24

6.5 Placing solar tank back in operation after

cleaning 25

7 Replacement Parts 26

7.1 Replacement parts for PL750/2S 26

7.2 Heat Exchanger 27

7.3 Clean-out cover and anode rod assembly for

PL750/2S 29

7.4 Insulation Jacket for PL750/2S Tank 31

Safety Precautions and symbol clarification

Logalux PL750/2 S - Changes may be made following technical improvements! 3

1 Safety Precautions and symbol clarification

1.1 Safety Precautions

Placement, remodeling

VFire danger!

Solder and welding operations can result in fire, as the

insulation is combustible.

VThe solar combi-tank can only be installed or renovated

by trained installers.

Installation and Start-up Procedure

VCarefully follow these installation instructions, to

ensure long and trouble-free operation.

VDo not assemble the equipment in a damp environ-

ment.

Function

VFollow these directions for trouble free operation,

installation and maintenance.

VScalding danger!

WARNING! Danger of scalding (> 140 °F) from hot

water. A thermostatic tempering valve must be installed

on domestic hot outlet connection of tank, which is sup-

plied with the KS Solar Pump Station.

Maintenance

VRecommendation for end customer: Please sign

up for an annual service and maintenance contract with

your installer. Make sure to have annual maintenance

performed on your boiler and solar system.

VUse only original Buderus replacement parts.

1.2 Symbol Clarification

Signal words are describing the gravity of each danger

when safety precautions are not followed.

–Caution indicates possibility of light property damage.

–Warning indicates light personal injury or severe prop-

erty damage.

–Danger indicates possible severe personal injury with

potential loss of life.

Guidelines contain important information in order to avoid

or reduce danger to people and equipment.

If the solar storage tank will be installed in Massachusetts,

it must be installed by an a licensed plumber, installer or

dealer who is registered in that state.

Safety warnings are designated in the text

with a triangular warning label and grey color-

ing.

Guidelines in the text are designated with

shown symbol. The text is bracketed between

two horizontal lines.

We reserve the right to change and improve

technical information without prior notice.

It is expected that the installer is a licensed

heating contractor with the knowledge of ac-

cepted industry practices for the installation

and maintenance of the equipment and vari-

ous applications of the equipment involved.

2Product Description

Logalux PL750/2 S - Changes may be made following technical improvements!

2 Product Description

2.1 Applications

The solar combi-tank PL750/2S is designed for the heat-

ing and storage of domestic hot water. Applicable guide-

lines for domestic hot water must be followed.

2.2 Intended Use

The solar combi-tank PL750/2S is intended for heating

domestic hot water using a closed solar system filled with

a heat transfer fluid to prevent accidental freezing. The

tank can only be used in a closed system.

Any other use voids the warranty of the tank.

2.3 Guidelines for Installations

2.4 Product Disposal

VDispose of packaging of the solar tank in an environ-

mental friendly fashion.

VA Solar Combi-tank that is being replaced, must be dis-

posed of in a suitable fashion.

Follow all specific state and local codes re-

garding the installation and operation of the

equipment.

All electrical components must be approved

for the US.

Product Description

Logalux PL750/2 S - Changes may be made following technical improvements! 5

2.5 Product Packaging

Solar combi- tank PL750/2S consists of:

– Tank shell with corrosion protection

– The cathodic corrosion protection consists of hygienic

Buderus Thermoglaze DuoClean and a magnesium

anode protection system.

– Tank insulation made from non FCKW insulation mate-

rial.

– Solar indirect coil integrated into a heating lance

– Dry well for installation of DHW tank temperature sen-

sor.

– DHW temperature control of the boiler system controls

the DHW temperature.

– Dry well for installation of tank temperature sensor.

– Solar controller regulates the solar system by monitor-

ing the tank and collector temperature sensors.

– Hand-hole cover for service and maintenance access.

– Magnesium anodes.

– Insulation Jacket cover

Fig. 1 PL750/2 S

1Insulation

2Tank shell

3Magnesium anode rod

4Top tank insulation

5Top tank cover

6Dry well sensing port (MB1) for boiler control (FB)

7Stainless steel heating coil

8Dry well sensing port (MB2) for solar control (FSS)

2Product Description

Logalux PL750/2 S - Changes may be made following technical improvements!

2.6 Dimensions and Connections

Fig. 3 Dimensions and Connections PL750/2 S

AW DHW outlet

EK Cold water feed

EZ DHW recirc tapping

RS1 Return tank (Solar)

RS2 Return tank

(Oil, Gas, Condensing boiler for DHW heating)

RS3 Return boiler

RS4 Return heating circuit

RS5 Return solid fuel boiler

RSO Return solar loop

VS1 Supply solar loop

VS2 Supply solid fuel boiler

VS3 Supply tank

(Oil, Gas, condensing boiler for DHW heating)

VS4 Supply tank (heating circuits)

VS5 Supply boiler

VSO Supply solar loop

EL Drain buffer water tank

EL1 Drain DHW tank

MSensoring port, e.g. Temperature control

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

0,8"

6 720 615 217-04.1RS

Product Description

Logalux PL750/2 S - Changes may be made following technical improvements! 7

2.7 Technical Specifications

Tank model PL750/2 S

Tank volume total gal 198

l 750

Tank volume DHW gal 79

l 300

Tank volume Buffer gal 119

l 450

Diameter D inch 39

mm 1000

Diameter D (without insulation) inch 31.5

mm 800

Height H inch 76

mm 1920

AW NPT ¾ "

VS1NPT ¾ "

RS1NPT ¾ "

VS2-VS5NPT 1¼ "

RS2-RS5NPT 1¼ "

EL NPT 1¼ "

EL1NPT ¾ "

EK NPT 1 "

EZ NPT ¾ "

Dry weight1)

1) Dry weight, incl. packaging material.

lb. 573

kg 260

Maximum Operating Values:

Temperature Buffer water /solar

loop

°F 230

°C 110

DHW temperature °F 203

°C 95

Operating pressure solar loop psi 116

bar 8

Operating pressure DHW psi 1472)

2) In the Commonwealth of Massachusetts the operating pressure

is limited to 100 psi. Install a 100 psi relief valve.

bar 103)

3) Every installation requires the use of a thermal expansion tank

and pressure/temperature relief valve in the heating system and

solar system.

Operating pressure buffer water psi 43.5

bar 3

Tab. 1 Technical Specifications

2Product Description

Logalux PL750/2 S - Changes may be made following technical improvements!

2.8 Glossary of measuring points

Control Type Function/Task Sensor Location

Measuring

Point

With all warm water functions Warm Water Dry Well in Clean-

out Cover

MB1

Integrated '-Solar Controls

(KS0105/KS0110/KS0120), Loga-

matic 2107, R43xx

Component '-Solar Controller,

DBS

Switching the solar system on and off Bottom of tank MB2

3rd Party Controller (STECA) Safeguarding max. temperature Top of tank M, M1

Component '-Flow control of the

PU yes/no

Bypass PU Reference position

for system test run

R43xx and Logamatic-Controllers Control of a system test run in combi-

nation with a hydraulic switch

Reference position

for system test run

Logamatic 2107, R43xx Heating Control Reference position

for solar heating

Control for a solid-fuel heating sys-

tem

Terminate heating of the Solar Combi-

tank

Bottom of tank M7

DBS Switch High-flow/Low-flow Middle of tank M1

All hot water functions Open selection of functions Bottom of tank M6, M8

Tab. 2 Overview sensor ports of PL750/2 S

Transportation

Logalux PL750/2 S - Changes may be made following technical improvements! 9

3 Transportation

The solar combi-tank PL750/2S is attached to the pallet

with screws.

Fig. 4 Solar combi-tank on pallet

3.1 Transportation Means

Move the solar combi-tank PL750/2 S with a hand dolly,

a pallet jack, or a crane.

3.1.1 Transportation with dolly

VPlace the hand dolly at the backside of the packaged

tank.

VStrap the tank to the hand dolly.

VMove the tank to its final location.

Danger: Potential danger due to falling over

of tank.

VUse only transport devices that are in safe

operating condition.

VFor lifting only attach the harness to the 2

hooks at the top of the tank.

Danger: Potential for injury due to carrying

of heavy loads.

VAlso move and lift the tank with at least

two people.

Caution: Potential damage due to improper

securing of tank for transport.

VUse suitable tools and strapping materials

when securing and moving the tank with a

transport aid.

VBring in the entire tank in its original pack-

aging to the final installation location. This

will protect the tank better during trans-

port.

A Buderus hand dolly can be purchased

through your local wholesaler.

3Transportation

Logalux PL750/2 S - Changes may be made following technical improvements!

3.1.2 Transportation with overhead crane

VPlace the two lifting hooks of the chain into the desig-

nated lifting rings on top of the tank.

VHook the crane chain into the lifting chain.

VProtect the tank from falling and lift the tank to its final

installation location.

VLower the tank carefully to the floor; do not drop down

onto the floor!

One can move the tank inside the building also in a hori-

zontal manner due to possible height restrictions.

VRemove only the tank packaging at the final installation

site.

Fig. 5 Transportation with lifting crane

1Lifting eyes

3.2 Product Placement

VMaintain suggested service access dimensions

(ÆFig. 6).

VPlace tank on a level and sufficiently strong floor.

Clearance to wall

Fig. 6 Recommended minimum clearances

(in inch/mm)

1Solar Combi-tank

2Boiler

Caution: Damage due to internal stresses!

VPlace the tank in a frost free room.

VUse the solar combi-tank ONLY in closed

loop applications.

VOpen expansion tanks can NOT be used

with these solar combi-tanks.

Sufficient overhead space is required for the

removal of the magnesium anode rod as well

as some side clearance.

VVerify for suitable clearance dimensions by

referencing Tab. 1, page 7 and Fig. 6.

20"/500

>4"/>100

16"/400

6 720 615 217-08.1RS

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