KSB Hya-Duo D FL Series Installation instructions

Fire-fighting System
Hya-Duo D FL
From series 2014w33
Installation/Operating Manual

Legal information/Copyright
Installation/Operating Manual Hya-Duo D FL
Original operating manual
All rights reserved. The contents provided herein must neither be distributed, copied, reproduced,
edited or processed for any other purpose, nor otherwise transmitted, published or made available to a
third party without the manufacturer's express written consent.
Subject to technical modification without prior notice.
© KSB SE & Co. KGaA, Frankenthal 29/05/2019

Contents
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Contents
Glossary .................................................................................................................................................. 5
1 General.................................................................................................................................................... 6
1.1 Principles ...........................................................................................................................................................6
1.2 Installation of partly completed machinery....................................................................................................6
1.3 Target group.....................................................................................................................................................6
1.4 Other applicable documents............................................................................................................................6
1.5 Symbols .............................................................................................................................................................6
1.6 Key to safety symbols/markings.......................................................................................................................7
2 Safety...................................................................................................................................................... 8
2.1 General..............................................................................................................................................................8
2.2 Intended use .....................................................................................................................................................8
2.3 Personnel qualification and personnel training.............................................................................................8
2.4 Consequences and risks caused by non-compliance with this manual .........................................................9
2.5 Safety awareness ..............................................................................................................................................9
2.6 Safety instructions for the operator/user........................................................................................................9
2.7 Safety information for maintenance, inspection and installation ..............................................................10
2.8 Unauthorised modes of operation................................................................................................................10
3 Transport/Temporary Storage/Disposal............................................................................................. 11
3.1 Checking the condition upon delivery..........................................................................................................11
3.2 Transport.........................................................................................................................................................11
3.3 Storage/preservation......................................................................................................................................12
3.4 Return to supplier...........................................................................................................................................12
3.5 Disposal ...........................................................................................................................................................13
4 Description............................................................................................................................................ 14
4.1 General description ........................................................................................................................................14
4.2 Product information as per Regulation No. 1907/2006(REACH).................................................................14
4.3 Designation.....................................................................................................................................................14
4.4 Name plate......................................................................................................................................................14
4.5 Design details..................................................................................................................................................14
4.6 Configuration and function...........................................................................................................................16
4.7 Noise characteristics .......................................................................................................................................17
4.8 Scope of supply...............................................................................................................................................17
4.9 Dimensions and weights ................................................................................................................................17
5 Installation at Site................................................................................................................................ 18
5.1 Checks to be carried out prior to installation...............................................................................................18
5.2 Installing the fire-fighting system .................................................................................................................19
5.3 Mounting the accumulator............................................................................................................................19
5.4 Connecting the piping ...................................................................................................................................20
5.4.1 Connecting the by-pass line ..............................................................................................................20
5.4.2 Fitting an expansion joint (optional)................................................................................................21
5.5 Installing operator-supplied valves ...............................................................................................................21
5.6 Electrical connection ......................................................................................................................................21
5.6.1 Sizing the power cable ......................................................................................................................22
5.6.2 On-site protective measures..............................................................................................................22
5.6.3 Connecting the fire-fighting system.................................................................................................22
5.6.4 Connecting the limit switches (remote ON/OFF)..............................................................................23
5.6.5 Connecting the dry running protection device................................................................................23
5.6.6 Connecting the volt-free contacts ....................................................................................................23
5.6.7 Connecting electrical accessories ......................................................................................................23
6 Commissioning/Start-up/Shutdown................................................................................................... 24
6.1 Commissioning/Start-up.................................................................................................................................24

Contents
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6.1.1 Prerequisites for commissioning/start-up .........................................................................................24
6.1.2 Priming and venting the fire-fighting system..................................................................................24
6.1.3 Setting the dry running protection device.......................................................................................26
6.1.4 Start-up...............................................................................................................................................26
6.1.5 Checklist for commissioning/start-up................................................................................................26
6.2 Operating limits..............................................................................................................................................27
6.2.1 Frequency of starts.............................................................................................................................27
6.2.2 Ambient conditions ...........................................................................................................................27
6.2.3 Maximum operating pressure ...........................................................................................................27
6.2.4 Fluid handled .....................................................................................................................................28
6.2.5 Minimum flow rate............................................................................................................................28
6.3 Shutdown........................................................................................................................................................28
6.3.1 Shutdown ...........................................................................................................................................28
6.3.2 Measures to be taken for shutdown ................................................................................................28
7 Operation.............................................................................................................................................. 29
7.1 LED display......................................................................................................................................................29
7.2 Operating modes............................................................................................................................................29
7.2.1 Manual mode .....................................................................................................................................29
7.2.2 Functional check run..........................................................................................................................29
7.3 Functions.........................................................................................................................................................30
7.3.1 Automatic switchover (duty system and back-up system)...............................................................30
7.3.2 Dry running protection......................................................................................................................30
7.3.3 Temperature monitoring...................................................................................................................30
8 Servicing/Maintenance........................................................................................................................ 31
8.1 General information/safety regulations........................................................................................................31
8.2 Inspection contract.........................................................................................................................................31
8.3 Servicing/Inspection........................................................................................................................................32
8.3.1 Supervision of operation ...................................................................................................................32
8.3.2 Maintenance schedule.......................................................................................................................32
8.4 Setting the pre-charge pressure ....................................................................................................................33
9 Trouble-shooting.................................................................................................................................. 34
10 Related Documents.............................................................................................................................. 36
10.1 General assembly drawings with list of components...................................................................................36
10.1.1 Hya-Duo D FL with Movitec 2, 4, 6, 10, 15........................................................................................36
10.1.2 Hya-Duo D FL with Movitec 25, 40, 60, 90........................................................................................37
10.2 Wiring diagram (limit switches).....................................................................................................................38
11 EC Declaration of Conformity ............................................................................................................. 39
12 Certificate of Decontamination........................................................................................................... 40
13 Commissioning Report......................................................................................................................... 41
Index ..................................................................................................................................................... 42

Glossary
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Glossary
Accumulator
Pressure losses may occur in the piping system
downstream of the fire-fighting system which may
be caused by leakage of small quantities of water.
The accumulator serves to compensate pressure
losses and minimises the frequency of starts of the
fire-fighting system.
Back-up system
The part of the fire-fighting system / break tank
package booster set for fire-fighting which
ensures the supply of fire-fighting water in the
event of a fire if the duty system fails (see also
duty system).
Certificate of decontamination
A certificate of decontamination is enclosed by the
customer when returning the product to the
manufacturer to certify that the product has been
properly drained to eliminate any environmental
and health hazards arising from components in
contact with the fluid handled.
DIN14462
The fire-fighting systems/ break tank package
booster sets for fire fighting must comply with the
German standard for water conduits for fire
extinguishing.
Duty system
The active part of the fire-fighting system / break
tank package booster set for fire-fighting which
ensures the supply of fire-fighting water in the
event of a fire (see also back-up system).
IE3
Efficiency class to IEC60034-30: 3=Premium
Efficiency (IE = International Efficiency)
Manual mode
Direct operation on the power supply network,
independently of the control unit.
Pump activation
Pump activation means that a pump is started up
by a starting signal from the pressure switch, from
a wall hydrant (limit switch) via remote ON/OFF, or
from the broken wire and short-circuit monitoring
relay.
Switchgear and controlgear assembly
Control cabinet with one or several control units/
switchgears and electrical equipment.

1 General
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1 General
1.1 Principles
This operating manual is valid for the type series and variants indicated on the front
cover.
The operating manual describes the proper and safe use of this equipment in all
phases of operation.
The name plate indicates the type series, the main operating data and the serial
number. The serial number uniquely describes the product and is used as
identification in all further business processes.
In the event of damage, immediately contact your nearest KSB service facility to
maintain the right to claim under warranty.
1.2 Installation of partly completed machinery
To install partly completed machinery supplied by KSB refer to the sub-sections under
Servicing/Maintenance.
1.3 Target group
This operating manual is aimed at the target group of trained and qualified specialist
technical personnel.
1.4 Other applicable documents
Table1: Overview of other applicable documents
Document Contents
Sub-supplier product literature Operating manuals, logic diagram and other
product literature of accessories and integrated
machinery components
1.5 Symbols
Table2: Symbols used in this manual
Symbol Description
✓Conditions which need to be fulfilled before proceeding with the
step-by-step instructions
⊳Safety instructions
⇨Result of an action
⇨Cross-references
1.
2.
Step-by-step instructions
Note
Recommendations and important information on how to handle
the product

1 General
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1.6 Key to safety symbols/markings
Table3: Definition of safety symbols/markings
Symbol Description
!DANGER
DANGER
This signal word indicates a high-risk hazard which, if not avoided,
will result in death or serious injury.
!WARNING
WARNING
This signal word indicates a medium-risk hazard which, if not
avoided, could result in death or serious injury.
CAUTION
CAUTION
This signal word indicates a hazard which, if not avoided, could
result in damage to the machine and its functions.
Explosion protection
This symbol identifies information about avoiding explosions in
potentially explosive atmospheres in accordance with EU Directive
2014/34/EU (ATEX).
General hazard
In conjunction with one of the signal words this symbol indicates a
hazard which will or could result in death or serious injury.
Electrical hazard
In conjunction with one of the signal words this symbol indicates a
hazard involving electrical voltage and identifies information about
protection against electrical voltage.
Machine damage
In conjunction with the signal word CAUTION this symbol indicates
a hazard for the machine and its functions.

2 Safety
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2 Safety
!DANGER
All the information contained in this section refers to hazardous situations.
In addition to the present general safety information the action-related safety
information given in the other sections must be observed.
2.1 General
▪This operating manual contains general installation, operating and maintenance
instructions that must be observed to ensure safe operation of the system and
prevent personal injury and damage to property.
▪Comply with all the safety instructions given in the individual sections of this
operating manual.
▪The operating manual must be read and understood by the responsible specialist
personnel/operators prior to installation and commissioning.
▪The contents of this operating manual must be available to the specialist
personnel at the site at all times.
▪Information and markings attached directly to the product must always be
complied with and kept in a perfectly legible condition at all times. This applies
to, for example:
– Flow direction arrow
– Markings for connections
– Name plate
▪The operator is responsible for ensuring compliance with all local regulations not
taken into account.
2.2 Intended use
▪The fire-fighting system must only be operated within the operating limits
described in the other applicable documents.
▪Only operate the fire-fighting system in perfect technical condition.
▪Do not operate partially assembled fire-fighting systems.
▪Only use the fire-fighting system to handle the fluids described in the product
literature of the respective design variant.
▪Never operate the fire-fighting system without the fluid to be handled.
▪Observe the information on minimum flow rates specified in the product
literature (to prevent overheating, bearing damage, etc).
▪Observe the maximum flow rates indicated in the data sheet or product
literature (to prevent overheating, cavitation damage, bearing damage, etc).
▪Do not throttle the flow rate on the suction side of the fire-fighting system (to
prevent cavitation damage).
▪Consult the manufacturer about any other modes of operation not described in
the product literature.
2.3 Personnel qualification and personnel training
▪ All personnel involved must be fully qualified to install, operate, maintain and
inspect the product this manual refers to.
▪The responsibilities, competence and supervision of all personnel involved in
transport, installation, operation, maintenance and inspection must be clearly
defined by the operator.
▪Deficits in knowledge must be rectified by means of training and instruction
provided by sufficiently trained specialist personnel. If required, the operator can
commission the manufacturer/supplier to train the personnel.
▪Training on the fire-fighting system must always be supervised by specialist
technical personnel.

2 Safety
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2.4 Consequences and risks caused by non-compliance with this manual
▪Non-compliance with these operating instructions will lead to forfeiture of
warranty cover and of any and all rights to claims for damages.
▪Non-compliance can, for example, have the following consequences:
– Hazards to persons due to electrical, thermal, mechanical and chemical
effects and explosions
– Failure of important product functions
– Failure of prescribed maintenance and servicing practices
– Hazard to the environment due to leakage of hazardous substances
2.5 Safety awareness
In addition to the safety information contained in this operating manual and the
intended use, the following safety regulations shall be complied with:
▪Accident prevention, health regulations and safety regulations
▪Explosion protection regulations
▪Safety regulations for handling hazardous substances
▪Applicable standards, directives and laws
2.6 Safety instructions for the operator/user
▪Fit protective equipment (e.g. contact guards) supplied by the operator for hot,
cold or moving parts, and check that the equipment functions properly.
▪Do not remove any protective equipment (e.g. contact guards) during operation.
▪Provide the personnel with protective equipment and make sure it is used.
▪Contain leakages (e.g. at the shaft seal) of hazardous fluids handled (e.g.
explosive, toxic, hot) so as to avoid any danger to persons and the environment.
Adhere to all relevant laws.
▪Eliminate all electrical hazards. (In this respect refer to the applicable national
safety regulations and/or regulations issued by the local energy supply
companies.)

2 Safety
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2.7 Safety information for maintenance, inspection and installation
▪Modifications or alterations of the fire-fighting system require the
manufacturer's prior consent.
▪Use only original spare parts or parts/components authorised by the
manufacturer. The use of other parts/components can invalidate any liability of
the manufacturer for resulting damage.
▪The operator ensures that maintenance, inspection and installation are
performed by authorised, qualified specialist personnel who are thoroughly
familiar with the manual.
▪Carry out work on the fire-fighting system during standstill only.
▪The pump (set) must have cooled down to ambient temperature.
▪Pump pressure must have been released and the pump must have been drained.
▪When taking the fire-fighting system out of service always adhere to the
procedure described in the operating manual.
▪Decontaminate fire-fighting system which handle fluids posing a health hazard.
(ðSection8.1,Page31)
▪As soon as the work has been completed, re-install and re-activate any safety-
relevant devices and protective devices. Before returning the product to service,
observe all instructions on commissioning. (ðSection6.1,Page24)
▪Make sure the fire-fighting system cannot be accessed by unauthorised persons
(e.g. children).
▪Prior to opening the fire-fighting system, pull the mains plug and wait for at
least 10minutes.
2.8 Unauthorised modes of operation
▪Always observe the limits stated in the product literature.
▪The warranty relating to the operating reliability and safety of the mechanical
seal supplied is only valid if the fire-fighting system is used in accordance with its
intended use. (ðSection2.2,Page8)

3 Transport/Temporary Storage/Disposal
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3 Transport/Temporary Storage/Disposal
3.1 Checking the condition upon delivery
1. On transfer of goods, check each packaging unit for damage.
2. In the event of in-transit damage, assess the exact damage, document it and
notify KSB or the supplying dealer and the insurer about the damage in writing
immediately.
3.2 Transport
DANGER
Fire-fighting system tilting
Risk of injury by falling fire-fighting system!
▷Never suspend the fire-fighting system by its cable.
▷Observe the applicable local accident prevention regulations.
▷Observe the information on weights, centre of gravity and fastening points.
▷Use suitable and permitted transport equipment, e.g. crane, forklift or pallet
truck.
▷Attach the fire-fighting system to crane lifting tackle as shown, or use a forklift
or pallet truck to move the pallet.
Movitec 2, 4, 6, 10, 15 Movitec 25, 40, 60, 90
Fig.1: Transporting the fire-fighting system
üTransport equipment/ lifting equipment suitable for the corresponding weight
has been selected and is on hand.
1. Remove the packaging. Remove the caps from the connection openings.
2. Check for any in-transit damage.
3. Transport the fire-fighting system to the place of installation.
4. Attach the fire-fighting system to the lifting tackle as shown. Lift it off the
wooden skids. Dispose of the wooden skids.
5. Carefully place down the fire-fighting system at the site of installation.

3 Transport/Temporary Storage/Disposal
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3.3 Storage/preservation
CAUTION
Damage during storage due to frost, humidity, dirt, UV radiation or vermin
Corrosion/contamination of the fire-fighting system!
▷Store the fire-fighting system in a frost-proof, roofed area.
CAUTION
Wet, contaminated or damaged openings and connections
Leakage or damage of the fire-fighting system!
▷Only remove caps/covers from the openings of the fire-fighting system at the
time of installation.
If commissioning is to take place some time after delivery, we recommend that the
following measures be taken for storing the fire-fighting system:
Store the fire-fighting system in a dry, protected room where the atmospheric
humidity is as constant as possible.
Table4: Ambient conditions for storage
Ambient condition Value
Relative humidity 50% maximum
Ambient temperature 0°C to +40°C
▪Frost-free
▪Well-ventilated
3.4 Return to supplier
1. Drain the fire-fighting system as per operating instructions.
2. Flush and clean the fire-fighting system, particularly if it has been used for
handling noxious, explosive, hot or other hazardous fluids.
3. If the fire-fighting system has handled fluids whose residues could lead to
corrosion damage in the presence of atmospheric humidity or could ignite upon
contact with oxygen, the fire-fighting system must also be neutralised, and
anhydrous inert gas must be blown through the fire-fighting system to ensure
drying.
4. Always complete and enclose a certificate of decontamination when returning
the fire-fighting system. (ðSection12,Page40)
Always indicate any safety measures and decontamination measures taken.
NOTE
If required, a blank certificate of decontamination can be downloaded from the
following web site: www.ksb.com/certificate_of_decontamination

3 Transport/Temporary Storage/Disposal
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3.5 Disposal
WARNING
Fluids handled, consumables and supplies which are hot and/or pose a health
hazard
Hazard to persons and the environment!
▷Collect and properly dispose of flushing fluid and any fluid residues.
▷Wear safety clothing and a protective mask if required.
▷Observe all legal regulations on the disposal of fluids posing a health hazard.
1. Dismantle the fire-fighting system.
Collect greases and other lubricants during dismantling.
2. Separate and sort the pump materials, e.g. by:
- Metals
- Plastics
- Electronic waste
- Greases and other lubricants
3. Dispose of materials in accordance with local regulations or in another
controlled manner.
Electrical or electronic equipment marked with the adjacent symbol must not be
disposed of in household waste at the end of its service life.
Contact your local waste disposal partner for returns.
If the used electrical or electronic equipment contains personal data, the operator is
responsible for deleting it before the equipment is returned.

4 Description
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4 Description
4.1 General description
▪Fire-fighting system
4.2 Product information as per Regulation No. 1907/2006(REACH)
For information as per chemicals Regulation (EC) No 1907/2006 (REACH), see http://
www.ksb.com/reach.
4.3 Designation
Example: Hya-Duo D FL 2/ 1506 B
Table5: Designation key
Code Description
Hya-Duo Type series
D FL Fire-fighting system with three-phase motor
2 Number of pump sets
15 Pump size
06 Number of stages
B Design status
4.4 Name plate
1
2
4
3
6
5
8
7
Johann-Klein-Straße 9
Deutschland
67227 Frankenthal
KSB SE & Co. KGaA
Hmax: 88,4 m Qmax: 22,5 m³/h
Made in Germany 29133689
ZNI1448 P
Hya-Duo D FL 2/1506 B
2019w04
400 V 3~ 10,07 A
50 Hz 5,5 kW IP55
Fig.2: Name plate (example)
1 Type series, size 5 Year/ calender week of construction
2 Rated voltage 6 Maximum current input
3 Frequency, power 7 Enclosure
4 Maximum head 8 Maximum permissible flow rate
4.5 Design details
Design
▪Fully automatic fire-fighting system
▪Baseplate-mounted1)
▪Discharge-side, direct-flow membrane-type accumulator, approved for drinking
water
▪Vibration damping
Installation
▪Stationary dry installation
1) Version with Movitec90B excluded

4 Description
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Drive
▪Three-phase asynchronous motor
▪220 – 240V/ 380 – 420V, 380 – 420V/ 660 – 720V
▪Enclosure IP55
▪Efficiency class IE3 to IEC60034-30
▪DOL starting up to and including 4kW
▪Soft starter
▪Pressure-controlled starting and flow-controlled stopping
Automation
▪Electro-mechanical control system, IP54
▪Timer
▪Manual-automatic selector switch
▪Phase monitoring relay
▪In automatic mode, the motor protection circuit only outputs an alert.
▪Terminal strip/terminals with identification for all connections
▪Pressure switch or remote ON/OFF, monitored for broken wires and short circuit
▪Circuit diagram to VDE and parts list for electric parts
Indication via indicator lamps:
▪Colour LED indicating lack of water (red)
▪Colour LED indicating a fault (amber)
▪Colour LED indicating readiness for operation (green)
▪Colour LED indicating operation started by pressure switch or remote ON/OFF
(white)
Indication via volt-free isolating terminals:
▪Lack of water
▪Overflow
▪Position of manual-automatic selector switch
▪Pump control via pressure switch or remote ON/OFF
▪General fault message
▪Drinking water stop
Monitoring for broken wires and monitoring for short circuit:
▪>10.3kΩ: broken wire
▪10kΩ: good state
▪1kΩ: pump start through actuation of limit switch
▪< 300Ω: short circuit

4 Description
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4.6 Configuration and function
4
5
1
2
3
6
Fig.3: Illustration of the fire-fighting system
1 High-pressure centrifugal pump 4 Control cabinet
2 Temperature monitoring 5 Pressure switch
3 Valve 6 Solenoid valve
Design Fully automatic fire-fighting system, comprising two high-pressure centrifugal pumps
(1), piping and control cabinet (4) on a common baseplate. The fire-fighting system
comprises one duty system and one back-up system. Anti-vibration mounts are fitted
at the pump feet and baseplate.
Function The pump sets are started and stopped as a function of pressure via an electro-
mechanical control system. If the pressure drops below the set start-up pressure pE
the pump sets are started up via the pressure switch. When consumption decreases
again, the pump sets are stopped as a function of pressure after the set after-run
time (up to 10minutes). Independently of the pressure switch, the fire-fighting
system can also be controlled via remote ON/OFF (e.g. a switch in the wall hydrant).
The pressure switch and remote ON/OFF input are monitored for broken wires and
short circuit. If a broken wire or short circuit are detected, the fire-fighting system is
started up automatically and a fault is indicated.
In the event of a fire, pumping the fluid handled is of top priority. In automatic
mode, the protection features (dry running protection, motor protection) cannot be
enabled. If the motor protection switch trips, the motor will keep running on the
power supply network without further monitoring. A fault message is output.

4 Description
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4.7 Noise characteristics
For the noise characteristics refer to the operating manual of the pump (set).
4.8 Scope of supply
Depending on the model, the following items are included in the scope of supply:
▪Fire-fighting system
– Two vertical Movitec high-pressure centrifugal pumps
– Discharge-side piping
– Check valve
– Shut-off valves
– Discharge-side, direct-flow membrane-type accumulator
– Pressure switch on the discharge side
– Pressure gauge
– Base frame
– Temperature sensor
▪Control unit
– Two power supply connections
– Two motor protection switches
– Two master switches
– Two relays for broken wire monitoring/ short-circuit monitoring
– Two manual-automatic selector switches
– Two timers
– Two phase monitoring relays
– Two soft starters
– Two control transformers
– Terminal strip with markings for all connections
4.9 Dimensions and weights
For dimensions and weights refer to the outline drawing.

5 Installation at Site
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5 Installation at Site
5.1 Checks to be carried out prior to installation
WARNING
Installation on mounting surfaces which are unsecured and cannot support the
load
Personal injury and damage to property!
▷Use a concrete of compressive strength class C12/15 which meets the
requirements of exposure class X0 to EN206-1.
▷The mounting surface must have set and must be completely horizontal and
even.
▷Observe the weights indicated.
NOTE
The anti-vibration mounts provide adequate insulation against solid-borne noise.
NOTE
Do not operate the fire-fighting system near living quarters and/or sleeping
quarters.
NOTE
Observe the installation requirements to DIN14462.
Before beginning with the installation check the following:
▪All structural work required has been checked and prepared in accordance with
the dimensions in the outline drawing.
▪The fire-fighting system can be operated on the power supply network according
to the data on the name plate. (ðSection4.4,Page14)
▪The place of installation is frost-free.
▪The place of installation can be locked.
▪The place of installation is well-ventilated.
▪A suitably dimensioned drain connection (e.g. leading to a sewer) is available.
▪If the system is installed below the flood level, the country-specific drainage
regulations must be complied with.
▪If expansion joints are used, take note of its creep resistance. Expansion joints
must be easily replaceable.

5 Installation at Site
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5.2 Installing the fire-fighting system
DANGER
Microbial contamination of drinking water
Danger to life!
▷If the volume of the inlet line exceeds 1.5l and/or the length of the inlet line
≥10×DN, flush the inlet line at least 1× per week. (ðSection6.1.2,Page24)
WARNING
Top-heavy fire-fighting system
Risk of injury by fire-fighting system tipping over!
▷Until the fire-fighting system is firmly anchored, secure it against tipping over.
▷Firmly anchor the fire-fighting system.
NOTE
To prevent the transmission of piping forces and solid-borne noise, installing
expansion joints with length-limiters is recommended.
üThe packaging of the fire-fighting system has been removed.
üSufficient clearance in all directions is provided for servicing work.
üAll structural work required has been checked.
üThe dimensions of the foundation are correct, and the concrete has set firmly.
üThe foundation is level.
1. Align the fire-fighting system horizontally.
ðStandard design: If necessary, insert shims, wedges or other supports under
baseplate sections designed to contact the floor.
ðVersion with feet (optional): Adjust the feet height.
2. Connect the suction line to the inlet side of the pressure booster system.
Connect the discharge line to the discharge side of the pressure booster system.
See DIN1988.
3. Mark the fastening hole positions on the foundation in accordance with the
outline drawing (other applicable documents).
4. Drill the holes (maximum diameter: 12mm).
5. Insert plug fixings of appropriate size.
6. Place the fire-fighting system in its correct installation position.
7. Use suitable bolts to firmly anchor the fire-fighting system.
5.3 Mounting the accumulator
CAUTION
Dirt in the fire-fighting system
Damage to the pump set!
▷Clean the accumulator before filling it.
üThe original operating manual of the accumulator is on hand.
1. Mechanically and electrically connect the accumulator in accordance with the
original operating manual supplied.

5 Installation at Site
20 of 44 Hya-Duo D FL
5.4 Connecting the piping
CAUTION
Air pockets in suction line
Fire-fighting system system cannot prime!
▷Lay the piping with a continuously rising slope.
1952:116
1
Fig.4: Correct piping connection
1 Suction lift operation
1. Install the piping without transmitting any stresses and strains.
2. Connect the piping to the distribution lines on the inlet side and discharge side.
5.4.1 Connecting the by-pass line
CAUTION
By-pass line not connected
Flooding of installation room!
▷Guide the by-pass line from the solenoid valve to the sewer or the accumulator.
üThe fire-fighting system has been properly installed. (ðSection5.2,Page19)
üThe accumulator has been mounted. (ðSection5.3,Page19)
1. Seal the threads of the by-pass line with suitable sealing material. Screw the by-
pass line into the solenoid valve.
2. Guide the by-pass line to the sewer or into the accumulator.