FläktGroup Row-DENCO DRX 051 User manual

Row-DENCO®
OPERATION MANUAL

Table of Contents Row-DENCO
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1 Unit Identification Plate .............................................................. 4
2 Unit Type Code ............................................................................ 6
2.1 Indoor type code ...................................................................................... 6
2.2 Outdoor type code ................................................................................... 7
3 Overview of Units and Packaged Content ................................ 8
3.1 Documents enclosed with the unit ........................................................... 8
3.2 General characteristics ............................................................................ 8
3.3 Versions ................................................................................................. 11
3.4 Type of system ....................................................................................... 12
4 Safety and User Instructions ................................................... 14
4.1 Availability of the operation manual ....................................................... 14
4.2 Scope of the operation manual .............................................................. 14
4.3 Symbols used ........................................................................................ 14
4.4 Labelling of safety instructions ............................................................... 15
4.5 Used safety symbols .............................................................................. 16
4.6 Safety-conscious work procedures ........................................................ 17
4.7 Proper use ............................................................................................. 19
4.8 Safety devices ........................................................................................ 20
4.9 Modifications and changes .................................................................... 20
4.10 Spare parts ............................................................................................ 20
4.11 Disposal ................................................................................................. 20
4.12 Selection and qualification of personnel ................................................ 20
5 Technical Data ........................................................................... 21
5.1 Row-DENCO DX rack cooler ................................................................. 21
5.2 Row-DENCO CW rack cooler ................................................................ 22
5.3 Operating limits ...................................................................................... 22
6 Receipt, Transport and Handling ............................................. 23
6.1 Transport ................................................................................................ 23
6.2 Receiving the unit .................................................................................. 24
6.3 Storage .................................................................................................. 24
6.4 Standard packaging and packaging with wooden crate (optional) ......... 25
7 Dimensional Drawings .............................................................. 26
7.1 DRX 051-071-121 (300 X 1000 X 42U RACK) ...................................... 26
7.2 DRX 051-071-121 (300 X 1200 X 42U RACK) ...................................... 27
7.3 DRC 020-035 (300 X 1000 X 42U RACK) ............................................. 28
7.4 DRC 036 (300 X 1000 X 42U RACK) .................................................... 29
7.5 DRC 020-035 (300 X 1200 X 42U RACK) ............................................. 30
7.6 DRC 036 (300 X 1200 X 42U RACK) .................................................... 31
7.7 DROU 051 and DROU 071 .................................................................... 32
7.8 DROU 121 ............................................................................................. 33
8 Installation ................................................................................. 34
8.1 Overview Diagram ................................................................................. 34
8.2 Install Row-DENCO ............................................................................... 37
8.3 Connection of the refrigeration circuit to the external evaporator (on-site) .
38
8.4 Refrigerant connections (DRX/DROU) .................................................. 41
8.5 Water connections (DRC) ...................................................................... 45

Row-DENCO Table of Contens
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 3
9 Electrical Connection ............................................................... 49
9.1 Requirements ......................................................................................... 49
9.2 DRX Connection Configuration .............................................................. 54
9.3 DRC connection configuration ................................................................ 55
9.4 Electrical specifications ........................................................................... 56
10 Commissioning and Testing .................................................... 57
10.1 Evacuation .............................................................................................. 57
10.2 Charging ................................................................................................. 58
10.3 Preparing for first start up ....................................................................... 58
10.4 Condensate drain ................................................................................... 61
10.5 Instruments and alarms .......................................................................... 61
10.6 Calibrating the control and safety devices .............................................. 61
10.7 Calibrating the dirty filter sensor ............................................................. 61
10.8 Modulating water valve ........................................................................... 62
10.9 2-Way valve shut off ............................................................................... 64
10.10 2-Way ON/OFF valve (optional) ............................................................. 65
10.11 Temperature and Hhumidity Pprobe (option DRZ-3HSENA.E04) .......... 65
10.12 Energy monitoring (optional) ................................................................... 66
10.13 Dual power supply (optional) .................................................................. 66
10.14 Humidifier ................................................................................................ 67
10.15 Maintenance ........................................................................................... 72
11 Maintenance .............................................................................. 74
11.1 Cleaning the air filter ............................................................................... 74
11.2 Checking and cleaning the condenser coils ........................................... 74
11.3 Checking and cleaning the drains ........................................................... 75
11.4 General examination of operation ........................................................... 75
11.5 Visual check of the condition of the pressurised containers ................... 75
12 Troubleshooting ........................................................................ 76
13 Dismantling and Disposal ........................................................ 80
13.1 Dismantling ............................................................................................. 80
13.2 Disposal .................................................................................................. 81
Log Book for Chiller, Heat Pumps and Compressor/Condenser Units ... 82
PROTECTION NOTICES
The reproduction, distribution and utilization of this document as well as the communication of its contents
to others without express authorization is prohibited. Offenders will be held liable for the payment of dama-
ges. All rights reserved in the event of the grant of a patent, utility model or design.

Unit Identification Plate Row-DENCO
4FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
1 Unit Identification Plate
The unit identification plate is secured on the unit and is explained as follows. Enter the
data from the unit identification plate in the operation manual. This record establishes
the relationship between the unit and the operation manual. If this condition is met, the
operation manual can then be used to enter test and inspection data for your unit.
Fig. 1-1
The Row-DENCO rating plate is positioned on a panel inside the unit, and provides the
following information:
– model and serial number of the unit
– power supply (voltage, phases and frequency)
– power consumption of the unit
– current draw of the unit: FLI (Full Load Input), FLA (Full Load Current) and LRA
(Locked Rotor Current)
FläktGroup Deutschland GmbH
FläktGroup Deutschland GmbH
Company name
Max. operating pressure
high and low pressure side
Max. operating pressure on water
side
Drawing number of wiring diagram
Company logo
Unit type
Item number
Serial Number
Year of manufacture
Operating weight
Refrigerant
Refrigerant charge volume
Oil type
Power supply
Max. power consumption
Max. current consumption
Max. storage
and shipping temperature

Row-DENCO Unit Identification Plate
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 5
The DROU condensing units can be identified by the:
Packaging label
Showing the data identifying the product.
Rating plate
Showing the unit technical and performance data. If this is lost, ask After Sales Service
for a replacement.
NOTE!
Tampering with or the removal or absence of rating plates or other means enabling
the unit to be identified causes problems during installation and maintenance.

Unit Type Code Row-DENCO
6FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
2 Unit Type Code
2.1 Indoor type code
Row-DENCO DR X 3 0XX A 5
Product range Cooling system Dimension Unit size Series Power supply
DR Row-DENCO
CChilled water
XSplit system
3Width of unit x 100 mm
020 only DRC version
025 only DRC version
035 only DRC version
036 only DRC version
051 only DRX version
071 only DRX version
121 only DRX version
ASeries
5230 V/1Ph/50 Hz

Row-DENCO Unit Type Code
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 7
2.2 Outdoor type code
Row-DENCO DROUD121A1.W
Product range Key outdoor unit Outdoor system Refrigerant Unit size Series Power supply Version
DR Row-DENCO
OOutdoor units
UCondensing Unit
DR-410A
051
071
121
ASeries
1400 V/3Ph/+N/50 Hz - only Unit size 071-121
5230 V/1Ph/+N/50 Hz - only Unit size 051
.N Standard version
.W Winter-Kit down to -35 °C ambient
NOTE!
For detailed planning please only use the order-related documentation. Detailed
dimensional drawings can be obtained on request from your relevant FläktGroup
sales office. Specifications and technical data are subject to regular updates. The
manufacturer reserves the right to make necessary changes to information without
prior written notice.

Overview of Units and Packaged Content Row-DENCO
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3 Overview of Units and Packaged Content
3.1 Documents enclosed with the unit
Each unit is delivered complete with the following documents:
–Row-DENCO installation, user and maintenance manual
– Wwiring diagram
– list of spare parts
– CE declaration with list of European directives and standards that the unit is com-
pliant with
– warranty conditions
3.2 General characteristics
3.2.1 Row-DENCO indoor unit
Description of the unit
The Row-DENCO air-conditioning unit is an innovative and efficient system for mana-
ging hot spots in data centers, guaranteeing low energy consumption and possibility to
be used with HIGH DENSITY racks that generate extremely high loads, up to and over
40 kW/m² per rack. The use of the latest generation EC fans with brushless motors
ensures excellent performance in terms of low power consumption and low noise. N+1
dynamic management of the EC fans to optimise consumption and cooling system red-
undancy are available as standard.
On the Row-DENCO versions, the units are positioned in rows of RACKS, with a layout
so as to create cold aisles, where the cool air from the Rack Cooler is delivered, and
hot aisles, where the air heated by the electronic equipment housed in the RACKS is
discharged. These are individual units installed between the Racks in a row, so as to
absorb the local heat load of the servers.
On Row-DENCO versions, the air to be cooled is taken in at the rear of the unit directly
from the data center hot aisle (35 °C), giving considerable benefits in terms of both
energy efficiency and cooling capacity, before being cooled and then delivered into the
cold aisle (18-20 °C), in other words, at the front of the same rack where the air is taken
in.
Fig. 3-1
Structure
Extremely compact structure that reduces overall dimensions, made from galvanised
steel plate with RAL9002 epoxy powder coating. The panelling is coated with an inno-
vative double layer of plastic, is lined on the inside with special soundproofing material.
Fans
The use of latest generation 225 mm diameter radial fans with EC brushless motors
ensures excellent performance and low power consumption. N+1 dynamic manage-
ment of EC fans is featured as standard, allowing operation at reduced flow-rate to opti-
mise power consumption. Moreover, in the event of a fault on one fan, the other fans
are operated at maximum speed to ensure the same cooling performance.
The fan section has been designed to allow rapid replacement in the event of faults,
thus reducing system downtime.

Row-DENCO Overview of Units and Packaged Content
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 9
Filters
Regenerable polyester fibre filtering media (G2 efficiency) treated with synthetic resins,
supported by a frame with protective metal mesh. The filtering media is flame retar-
dant.
Air-Sources Heat Exchanger
Finned coil with large frontal surface area, made from mechanically expanded tubes
and aluminium fins with hydrophilic treatment and high heat transfer area. The coil is
placed upstream of the fans for optimum air distribution.
Electrical Ppanel
Built and wired in compliance with IEC 204-1/EN60204-1 standards, complete with fan
contactor and overload protection.
Microprocessor Control System
The microprocessor, by managing the compressor for the direct expansion unit and the
modulating 3-way valve for the water chiller, controls cooling capacity and operating
alarms, with the possibility of connection to supervisory systems.
Immersed Electrode Humidifier (optional)
Modulating steam production and automatic control of salt concentration in the water
tank to allow the use of untreated water.
3.2.2 Outdoor condensing unit
Description of the DROU unit
For direct expansion versions, the DROU outdoor condensing unit combined with the
DRX indoor unit, is aircooled with axial-flow fans, fitted with INVERTER-DRIVEN HER-
METIC SCROLL compressor for operation on R-410A refrigerant, mounted on rubber
vibration dampers, complete with oil pre-charge, supplied with oil separator to ensure
correct lubrication even at minimum speed, and fitted with thermal protector.
Structure
Powder coated metal plate base panelling and inside structure. Non-flammable closed
cell polyethylene foam thermal insulation and soundproofing on the inside.
Inverter-Driven compressors
High efficiency hermetic scroll compressor with brushless DC motor, complete with
thermal protector, with electronic capacity control managed by INVERTER. This ensu-
res unit operating efficiency even at part loads, which represent more than 75 % of nor-
mal operating time, meaning effective overall average energy savings of up to 50 %
compared to traditional ON/OFF technology. Mounted on rubber vibration dampers,
complete with sump heater, oil charge and oil separator to prevent migration of the gas
charge and ensure lubrication of the compressor sump during operation at minimum
speed. Complete with thermal protector and sump heater installed as standard on all
versions.
Electrical panel
Power and control electrical panel constructed in accordance with IEC 204-1/
EN60204-1, complete with control and terminal blocks for connection to the power sup-
ply and auxiliary controls.
Protection grille
The unit comes with a protection grill on the condenser coil.

Overview of Units and Packaged Content Row-DENCO
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Heat exchange coils
Made using copper tubes mechanically expanded onto aluminium fins with a high heat
exchange area.
Condenser fan
External impeller axial-flow fans, statically and dynamically balanced at low speed. Six-
or four-pole electric motor with built-in thermal cut-out. Housed in aerodynamic tubes
with accident prevention grill. Device for operation at low outside air temperatures: con-
tinuous fan speed control according using a pressure transducer. EC axial-flow fan
available as an option.
Fig. 3-2: Explo Outdoor Condensing Unit
1: Grille Protection for finned coil
2: Electrical panel
3: Gas valve
4: Scroll compressor
5: Fan
1
2
3
4
5

Row-DENCO Overview of Units and Packaged Content
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 11
3.3 Versions
3.3.1 Air-Cooled direct expansions unit – DRX
The DRX series units, with single direct expansion cooling circuit, use air for cooling in
the condensing stage, and are therefore combined with the DROU air-cooled outdoor
condensing units.
Refrigerant circuit – DRX
Unit featuring a refrigerant circuit complete with the following components:
– direct expansion coil
– low pressure switch
– electronic expansion valve
– pressure transducer and temperature probe for electronic valve
– shut-off valves for connection to outdoor unit
– connections available from top or bottom
DROU
Unit supplied pre-charged with refrigerant and factory tested. Unit featuring a refrige-
rant circuit complete with the following components:
–filter-drier
– liquid indicator
– safety pressure switch to control high discharge pressure (manual reset)
– liquid receiver
– external connections with valves
3.3.2 Chilled water unit – DRC
The DRC 020-025-035 units featuring a single chilled water cooling circuit supplied by
a chiller installed on-site, while model DRC 036 has two independent circuits, one pri-
mary and one secondary as backup, both using chilled water (CW) supplied by two
chillers installed on-site.
The unit is supplied with a modulating valve complete with servo motor .
The signal to open and/or close the valve is automatically managed by the electronic
controller, so as to maintain the desired indoor conditions.
The inside air is cooled when flowing through the cooling coil on the Row-DENCO.
Water circuit
Unit featuring a refrigerant circuit complete with the following components:
– chilled water coil
– 3-way modulating valve complete with three-position servomotor
– threaded water fittings
– connections available from top or bottom
: Refrigerant piping
: Water piping
Fig. 3-3
Fig. 3-4

Overview of Units and Packaged Content Row-DENCO
12 FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
3.4 Type of system
3.4.1 Rack cooling with cold/hot aisle configuration with front outlet
Fig. 3-5: Row-DENCO version with front outlet
The units are installed in the rows of RACKS so as to form cold and hot aisles.
The electronic equipment in the RACKS use their own fans to independently take in the
cooling air delivered into the cold aisle. The hot exhaust from the RACK is discharged
into the hot aisle, where it is taken in and cooled by the Row-DENCO unit.
hot aisle
cold
aisle
hot aisle
hot aisle
cold
aisle
hot aisle
hot aisle
cold
aisle
Air flow on Row-DENCO with front outlet
(top view) Row-DENCO version
front Ooutlet/rear intake
cooling-only configuration,
without humidifier
Row-DENCO version
front outlet/rear intake
configuration with humidifier
dimensions
L = 300 mm
D = 1000/1200 mm
H = 2085 mm
dimensions
L = 300 mm
D = 1200 mm
H = 2085 mm

Row-DENCO Overview of Units and Packaged Content
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 13
3.4.2 Rack cooling with cold/hot aisle configuration with side outlet
Fig. 3-6: Row-DENCO version with side outlet
The units are installed in the rows of RACKS so as to form cold and hot aisles.
The electronic equipment in the RACKS use their own fans to independently take in
the cooling air delivered into the cold aisle. The hot exhaust from the RACK is dischar-
ged into the hot aisle, where it is taken in and cooled by the Row-DENCO unit.
In the version with side outlet, the air is delivered directly to the front of the racks, redu-
cing the risk of mixing between cold and hot air, and ensuring correct air distribution
even when the rack cooler is installed at the start of the row.
hot aisle
cold
aisle
hot aisle
hot aisle
cold
aisle
hot aisle
hot aisle
cold
aisle
Air flow on Row-DENCO with side outlet
(top view) Row-DENCO version side outlet/rear intake
dimensions
L = 300 mm
D = 1200 mm
H = 2085 mm
right outlet
left outlet
right+left outlet

Safety and User Instructions Row-DENCO
14 FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
4 Safety and User Instructions
FläktGroup units are constructed using state-of-the-art technology and according to
recognized safety regulations.
Use the FläktGroup units in a technically sound condition for the intended purpose
observing the current operation manual, taking safety aspects and potential hazards
into account. It is important to appreciate that failure to follow the instructions in this
manual may result in death or injury to the user, third persons, or damage to the
FläktGroup unit itself, connected units or other equipment! Have all faults repaired by
an authorized specialist without delay!
4.1 Availability of the operation manual
This operation manual contains important information regarding safe and correct ope-
ration of the unit.
This manual must always be available at the site where unit is operating. Every person
working on the equipment must read this manual fully before commencing the work
and take note of all relevant information while performing a task.
The operation manual is intended to be used by fitting and installation companies, buil-
ding services engineers, technical personnel or trained persons as well as electrical
and refrigeration engineering specialists.
4.2 Scope of the operation manual
This operation manual provides information about the following:
– Assembly/disassembly
– Installation
– Commissioning
– Use and operation
– Maintenance and Troubleshooting
4.3 Symbols used
The following symbols are used to highlight particular text sections in this operation
manual:
– This symbol is used to indicate normal lists.
•This symbol indicates handling instructions.
This symbol indicates the result of an action.
Danger symbols are specified in section „Labelling of safety instructions“ of page 15.
ATTENTION
Damage to the unit!
In case of alarms and faults, always make sure that the cause of the fault is identi-
fied. In particular, multiple resets of an alarms without first rectifying the cause can
damage the unit and invalidate the warranty.
Notice!
Additional details on using the unit are specified here.
Recycling!
This symbol is used to highlight instructions for the proper recycling of packaging
material and assembly groups no longer in use (separated according to recyclable
materials).

Row-DENCO Safety and User Instructions
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 15
4.4 Labelling of safety instructions
To designate the safety instructions the following symbols and notices are provided in
appropriate places throughout this document:
4.4.1 DANGER – Death/serious irreversible injury
Indicates an extremely hazardous situation which will result in death or serious irre-
versible injury, if the safety instruction is not followed.
Example:
4.4.2 WARNING – Death/serious injury
Indicates a hazardous situation which can result in death or serious irreversible injury,
if the safety instruction is not followed.
Example:
4.4.3 CAUTION – Minor or moderate injury
Indicates a hazardous situation which can result in minor or moderate injury, if the
safety instruction is not followed.
Example:
Electrocution through hazardous voltage will lead to death or serious injury.
•Disconnect the unit from the power supply and ensure the power cannot be
switched back on.
•Ensure the unit is voltage-free and isolated, earth and short circuit the unit, cover
or shield off neighboring live components.
High concentration of refrigerants in the air can result in death or serious in-
jury!
High concentration of refrigerants in the air may have an anaesthetic effect and
cause unconsciousness. Prolonged exposure may cause irregular heartbeat and
sudden death. Very high concentration of refrigerant may cause suffocation by
reduced oxygen content in the surrounding air.
•You should therefore only work in an adequately ventilated environment, and
exercise due care and attention when carrying out the work.
•Wear protective clothing and, if necessary, an autonomous breathing apparatus.
Sharp edges can cause injuries!
Observe precaution when cleaning due to risk of cuts on thin and sharp edges.
•Wear protective gloves.

Safety and User Instructions Row-DENCO
16 FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
4.4.4 ATTENTION – Environmental or material damage
Indicates actions that can result in equipment or property-damage only accidents.
Examples:
4.5 Used safety symbols
ATTENTION
ATTENTION
Risk of environmental damage!
Heavily contaminated filters can have a negative impact on production processes.
Depending on the filtered-out materials, contaminated filters are therefore classi-
fied as hazardous waste and must be properly disposed of according to the pre-
vailing guidelines and laws.
ATTENTION
Risk of damage to the unit!
If dampers are abruptly shut during unit operation, the unit can be damaged
beyond repair as a result of negative pressure or overpressure.
Electrical hazard
PERSONAL injury
Overhead loads
Risk of tipping
Rotating components!
Toxic substances
Crushing of limbs
Sharp cutting edges
Inflammable materials
Scalding
Hot surfaces

Row-DENCO Safety and User Instructions
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 17
4.6 Safety-conscious work procedures
Observe the following instructions when carrying out installation, adjustment or repair
jobs:
•Wear suitable protective clothing during work, such as protective footwear, gloves,
safety goggles, etc.
•Avoid flame sources, especially burning cigarettes. Open flame sources and
smoking in the proximity to the unit are prohibited. Filters and especially used filters
can easily catch fire. Leaking refrigerant can catch fire and emit noxious substances.
When working within range of mains voltage:
When working with refrigerants:
Please consider section "4.6.1 Handling refrigerants".
Cooling
Environmental damage
Damage to the unit
Electrocution through hazardous voltage will lead to death or serious injury.
•Disconnect the unit from the power supply and ensure the power cannot be
switched back on.
•Ensure the unit is voltage-free and isolated, earth and short circuit the unit, cover
or shield off neighboring live components.
Danger due to toxic substances!
High concentrations of refrigerants in the air may have an anaesthetic effect and
cause unconsciousness. Prolonged exposure may cause irregular heartbeat and
sudden death. Very high concentrations of refrigerant may cause suffocation by
reducing the oxygen content in the surrounding air. You should therefore only work
in an adequately ventilated environment, and exercise due care and attention when
carrying out the work.
Glycols and other antifreeze agents are harmful for humans and animals, if swallo-
wed. Consult a doctor immediately if swallowed by mistake.
•You should therefore only work in an adequately ventilated environment, and
exercise due care and attention when carrying out the work.
Caution due to low temperatures!
Contact with a liquid refrigerant can result in skin burns or injury to other organs.
Exercise due caution and attention when carrying out jobs and avoid contact with a
refrigerant.
•Wear protective gloves.

Safety and User Instructions Row-DENCO
18 FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
For all kinds of work:
•Please comply with the installation and transport instructions for FläktGroup units.
•Observe the pre-commissioning check points.
•Always make sure that the FläktGroup unit is accessible only to authorized and
trained technical personnel. If necessary, use appropriate equipment to keep
unauthorized persons away from the unit.
•Have all leaks eliminated by the FläktGroup Service or a specialist refrigeration
company immediately (refer to section 4.10).
•The safety sheet stating the type of refrigerant charged on the given unit shall be
firmly secured in the machine room of the unit in a well visible manner (refer to unit
identification plate or operation manual for the unit).
High pressure hazard!
When working on hydraulic or refrigeration circuits or in case of damage to the com-
ponents or piping, there is a risk of injury from fluids or gases escaping at high pres-
sure. Exercise due caution and attention when carrying out this work.
•Wear suitable protective clothing during work.
ATTENTION
Environmental damage!
Do not pollute the environment with liquid products, refrigerants or oils.
Dispose of the latter in accordance with local laws and regulations by avoiding
harm to the environment.Ethylene glycol and propylene glycol are categorised as
Water Hazard Class 1 in accordance with the catalog of water pollutants (mild
water pollutants). This also applies to mixtures with water.

Row-DENCO Safety and User Instructions
FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications 19
4.6.1 Handling refrigerants
According to DIN EN 378 Part 1 the R-134a and R-410A refrigerants belong to A1
group. Refer to the unit identification plate for data and charge volume of a particular
refrigerant.
Observe the usage details in accordance with EC regulation 842/2006.
Features of applicable refrigerant types:
– Non-combustible
– No direct toxic effect
– Colorless and odorless
– Heavier than air
– Contains fluorinated greenhouse gases as defined by the Kyoto protocol
– Ozone-depleting potential OPD: 0
– Greenhouse potential GWP: R-134a: 1300, R-410A: 1980
– Water hazard class WGK 1, with a slight risk to water
•Wear appropriate clothes when performing jobs with refrigerants and in the proximity
to a refrigeration circuit, e.g.
– Sealing protective goggles
– PVA or leather gloves
– Protective clothes for entire body
– If necessary, an autonomous breathing apparatus
First aid First aid measures directly after or during contact with refrigerants:
•Ensure your own protection against leaking refrigerant.
•Under all circumstances - call a doctor or and/an ambulance.
•Remove clothes contaminated by the refrigerant.
Inhalation Additional measures after inhalation of refrigerants:
•Take the injured person to a well-ventilated location.
•Ensure that the injured person is in a stable lateral position.
•Consumption of food and beverages must be avoided.
•If the injured person collapses or loses consciousness – perform mouth-to-mouth
respiration.
Skin contact Additional measures after skin contact with refrigerants:
•Rinse the affected body parts using lukewarm water for at least 15 min.
Eye contact Additional measures after eye contact with refrigerants:
•Do not rub your eyes.
•Remove contact lenses if you have any.
•Rinse your eyes with lots of water.
4.7 Proper use
The compressor-condenser units of the GL line are exclusively provided for connection
to an on-site air handling unit with integrated evaporator for room climate control.
Depending on the load consumption, the individual compressors are switched OFF
and ON with a signal on-site in order to adapt the unit power to the load consumption.
Proper use also includes observance of the operation manual and the inspection and
maintenance conditions stipulated by FläktGroup.
Improper use Any use other than that described above is considered improper. The manufacturer/
supplier is not liable for damage arising from improper use. The user alone bears the
risk.

Safety and User Instructions Row-DENCO
20 FläktGroup DC-2014-0106-GB 2019-02/R3 • Subject to modifications
4.8 Safety devices
Depending on the unit equipment, the following components are secured:
– Padlock in the door-stop device (TAS) on each door
– Locks of switch cabinet
– The panels and doors with lockable handles
– Fan chambers are secured by door protection grilles
– V-belt drives are secured by belt guards
Ensure by others on site that the contact protection for intake and discharge fittings is
provided.
4.9 Modifications and changes
Changes, alterations or modifications of the unit are not allowed. Tampering with the
unit or its misapplication will invalidate the CE conformity and void warranty.
If delivered units are disassembled by others on-site, the factory warranty is rendered
invalid. In this case professional services by FläktGroup should be arranged in
advance.
4.10 Spare parts
Only original FläktGroup spare parts are allowed, since FläktGroup is not liable if third-
party spare parts are used.
4.11 Disposal
Equipment, operating supply materials, components and filters must be disposed of
according to the material type in a safe and environmentally friendly manner.
4.12 Selection and qualification of personnel
Ensure that every person working on the unit has read and understood entire operation
manual. Please read this document fully before commencing any work, and not while
performing a task.
All jobs must only be carried out by qualified licensed staff or other individuals with
proper professional training and experience in the following areas:
– Occupational health and safety regulations
– Accident prevention regulations
– Directives and recognized codes of practice
All jobs with the refrigeration circuit shall be performed only by certified and licensed
staff in accordance with the valid EG Regulation 842/2006 Article 5, EG Regulation
303/2008 Article 4 and 5 as well as "Ordinance on climate protection against changes
caused by release of certain fluorinated greenhouse gases" Article 5, passed by the
German parliament.
All skilled staff must be able to assess the entrusted work and must be able to recog-
nize and avoid all associated dangers.
Personal Injury and Damage to the Unit!
It is not allowed to operate FläktGroup units:
– in areas subject to explosion risk
– in environments with strong electromagnetic fields
– in environments with high levels of air contamination
– in environments with corrosive and/or aggressive air