Swegon CoolDX Series User manual

GB.COOLDX.IN.G.200701
COOL DX version G, COOL DX Top version F/G, COOLING UNIT
Installation and Maintenance Instructions
Sizes 005-080
The document was originally written in Swedish.
The document can also be downloaded in Finnish, French, Dutch, Italian,
Norwegian, Portuguese, Spanish and German from www.swegon.com
COOL DX COOL DX Top

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
2 www.swegon.com
CONTENTS
1. General Survey 3
1.1 General 3
1.2 Basic function diagram 4
2 Safety instructions 5
2.1 Safety switch/mains power switch 5
2.2 Risks 5
2.3 Electrical equipment 5
2.4 Authorisation 5
2.5 Identification decals 5
3 Installation 6
3.1 Legal requirements 6
3.2 Unloading/transport within the building site 7
3.2.1 Lifting using a forklift truck 7
3.2.2 Lifting using a crane 7
3.2.3 Lifting eye bolts 7
3.3 Arrangement 7
3.4 Docking configurations COOL DX 8
3.4.1 Height adjustment to height of GOLD/water trap 9
3.4.2 Connection to the GOLD unit,
COOL DX, sizes 008-012 10
3.4.3 Connection to GOLD Units,
COOL DX Size 020-040 11
3.4.4 Connection to GOLD units, Cool DX,
sizes 060-080 12
3.4.5 Stand-alone COOL DX 13
3.4.6 Supply air filter 13
3.5 Basic installation diagram for the COOL DX Top 14
3.5.1 Connection to the GOLD air handling unit,
version F 15
3.5.2 Drainage/water trap, version F 15
3.5.3 Connection to the GOLD air handling unit,
version G 16
3.5.4 Drainage/water trap, version G 17
4 Electrical connections 18
4.1 Connection to power supply 18
4.1.1 COOL DX 16
4.1.2 COOL DX Top, version F 18
4.1.3 COOL DX Top, version G 19
4.2 To connect the communication cable 20
4.2.1 COOL DX 20
4.2.2 COOL DX Top 20
5 Commissioning 21
5.1 Preparations 21
5.1.1 Before initial start up 21
5.1.2 Starting up 21
5.1.3 Pressure sensors 21
5.1.4 Phase-sequence monitor 21
5.1.5 Remedial action if wrong phase sequence 21
5.1.6 Recommended settings 22
6 Alarms 22
7 Maintenance 23
7.1 Cleaning 23
7.2 Handling of refrigerant 23
7.3 Leakage tracing interval/Obligation to report 23
7.4 Servicing 23
8 Troubleshooting and leakage tracing 24
8.1 Troubleshooting Schedule 24
8.2 Leakage tracing 24
9 Dimensions 25
10 General technical data 27
11 Electrical equipment 29
11.1 COOL DX 29
11.2 COOL DX Top, version F 31
11.3 COOL DX Top, version G 31
12 Internal Wiring Diagram 32
12.1 COOL DX 32
12.2 COOL DX Top, version F 37
12.3 COOL DX Top, version G 39
13 Commissioning Record 41

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 3
Refrigerant
The COOL DX/COOL DX Top has double refrigerant circuits
separated from each other. Type R410A refrigerant is used.
The refrigerant circuits are charged on the delivery. At pre-
sent, this refrigerant has no known influence on the ozone
layer and no known future restrictions are anticipated.
Refrigerant volume
See section 10. General technical data.
Installation check/Obligation to report/
Leakage tracing interval
Must be carried out according to the F-Gas Regulation
EU/517/2014 and associated local legislation. See also Sec-
tion 3.1.
ISO 9001 Quality Management and ISO 14001 Envi-
ronmental Management Systems
We at Swegon are deeply involved in the maintenance of
our certified quality management system defined by ISO
9001 and our certified environmental management sys-
tem defined by ISO 14001.
1. GENERAL SURVEY
1.1. General
Cooling unit COOL DX/COOL DX Top
Cooling unit COOL DX/COOL DX Top is a complete coo-
ling unit for comfort cooling in air handling systems. All
the components are fully wired, have fully connected
refrigeration circuits and are collected inside a common
casing. The outer skin is made of galvanized sheet steel,
pre-painted in Swegon’s grey metallic colour (closest com-
parable: RAL, 9007). The inner skin material is aluminium-
zinc coated sheet steel. Environmental class C4. Panel
thickness of 52 mm with intervening insulation consisting
of mineral wool.
The cooling coil and condenser are fabricated of copper
tubes and profiled aluminium fins; the casing is made of
galvanized sheet steel.
The cooing units are tested prior to delivery.
The COOL DX is available in 19 capacity variants spread
on nine physical sizes, designed for use with the size 008 -
080 GOLD air handling units.
The COOL DX Top is available in 6 capacity variants spread
on three physical sizes, designed for use with the size 004
- 012 GOLD air handling units.
Compressors
The compressor in the COOL DX/COOL DX Top cooling
unit is of scroll compressor type and/or rotary compressors.
Completely direct-acting system
The COOL DX/COOL DX Top has a completely direct-
acting system. It has an evaporation coil for direct-evapo-
rating refrigerant on the cold side and a condenser coil on
the hot side.

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
4 www.swegon.com
1.2 Basic function diagram
Operation
There are two refrigerant circuits in the cooling unit. The
circuits are separate from one another.
Each circuit is equipped with a finned condenser, a finned
evaporator and a compressor.
The two compressors have different capacity, which ena-
bles control in 3 steps.
The gaseous refrigerant is compressed by compressors M1
and M2 and from there moves on to condenser COND,
where it is chilled by the extract air and is condensed to
liquid form.
The pressure and the temperature decrease as the refri-
gerant in fluid form flows through expansion valves VET1
and VET2.
COND Condenser
VSH1 Overpressure protect. (not COOL DX Top)
VSH2 Overpressure protect. (not COOL DX Top)
B1,1P High pressure sensor
B2,1P Low pressure sensor
B1,2P High pressure sensor
B2,2P Low pressure sensor
BP1 Alarm pressure switch for high pressure
BP2 Alarm pressure switch for high pressure
M1 Compressor
M2 Compressor
M3 Compressor (size 080 cap.var. 3 only)
EVAP Evaporator
VET1 Expansion valve with thermostat
VET2 Expansion valve with thermostat
IPL1 Sight glass, refrigerant circuit 1
IPL2 Sight glass, refrigerant circuit 2
FD1 Filter drier
FD2 Filter drier
From the expansion valves the refrigerant moves on to
evaporator EVAP, where the refrigerant evaporates and
chills the outdoor air.
From evaporator EVAP, the evaporated refrigerant is con-
veyed further to the suction side of the compressors where
it is again compressed.
Control
The cooling capacity is regulated in three binary steps by
having one or two compressors in operation.
The cooling compressors are controlled from the GOLD
unit via relays on the IQlogic+module mounted in the
COOL DX/COOL DX Top.
Step 1: When cooling is needed, Compressor M1 is start-
ed.
Step 2: If more cooling is needed, Compressor M2 starts
and at the same time Compressor M1 stops. An adjust-
able time delay (a step duration of 300 seconds) ensures
that Compressor M2 will not start until Compressor M1 is
operating at full capacity.
Step 3: If even more cooling is needed, Compressor M1 is
restarted and is run at the same time as Compressor M2.
This third cooling step is also delayed by a preset time de-
lay setting. In addition, the restarting time (300 seconds)
for Compressor M1 shall have expired.
If less cooling is needed and the compressors are subse-
quently switched out step-by-step, there will be no delay
between compressors. The restarting time (300 seconds)
for Compressor M1 shall have expired to enable it to start
again in Step 1 after it has been operated in Step 3.
If any compressor is stopped, the restarting time must
expire before a restart can take place. The restart time is
calculated from one start to the next start.
Low/high pressure sensors B1/B2 measure the pressure
conditions in the system and transmit readings to the
control system to ensure that these are within stipulated
limits.
If the pressure in the cooling circuit becomes too low, or
if the pressure in the condenser circuit becomes too high,
the compressor is stopped and the text PRESSURE LIMIT-
ING is displayed alternately in the hand-held micro termi-
nal of the GOLD air handling unit.
When the restart time has expired, the compressors will try
to restart.
If the pressure continues to increase, the high-pressure
switches BP1 and BP2 will trip and stop the cooling unit
COOL DX.
Alarms 22:0 and 22:3 are on shown on the GOLD air han-
dling unit’s hand-held terminal.
The pressure switches BP1 and BP2 can be manually reset
by pressing a button on top of the pressure switch.
COND
VSH2
M1 M2
EVAP
VET1VET2
IPL1IPL2
FD1FD2
B2,2P
HP
B1,2P
LP
HP
B2,1P
HP
B1,1P
LP
HP
BP2BP1
VSH1
M3

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 5
2 SAFETY INSTRUCTIONS
2.1 Safety switch/mains power switch
The safety isolating switch is positioned on the inspection
side of the cooling unit.
The safety isolating switch should not be used for starting
or stopping of the cooling unit.
To ensure that the COOL DX is switched off: stop the air
handling unit or briefly switch off the cooling unit via the
hand-held micro terminal. See the GOLD Operation and
Maintenance Instructions.
On completing the above, the safety isolating switch can
be used for switching off the power supply. The safety
switch must be switched off in order to make it possible
to open the inspection door (not COOL DX Top, version
G).
Caution!
Always switch off the safety switch whenever you
service the unit, unless otherwise stated in relevant
instructions
2.2 Risks
Warning
Always isolate the power supply before starting any
work in the refrigerant circuit or the electrical system.
Warning
Under no circumstances may the refrigerant circuits be
opened by unauthorised personnel, since they contain
gas under high pressure.
Risk areas where exposure to refrigerant could occur
Practically the whole area inside the cooling unit is a risk
area. For particulars on how to deal with leakage, see Sec-
tion 7.2. Type R 410A refrigerant is used.
Warning
COOL DX
The inspection doors on the cooling unit must not be
opened while the air handling unit is in operation.
The door could fly open and cause personal injury.
(The safety isolating switch on the COOL DX must be
switched off before it will be possible to open the in-
spection door).
COOL DX Top
The inspection doors on the cooling unit can be opened
while the GOLD unit is in operation (not pressurized).
2.3 Electrical equipment
The electrical equipment of the cooling unit is housed in
a separate cubicle located behind one of the inspection
doors.
2.4 Authorisation
Only qualified and authorised electricians shall be permit-
ted to install electrical wiring in the unit.
Only an accredited refrigeration company shall be permit-
ted to modify or repair the refrigeration circuits.
Other modifications in the unit should only be made by
service personnel trained by Swegon.
2.5 Identification decals
The unit identification decal indicating type designation,
serial number, refrigerant volume, etc. is affixed to the
door of the cooling unit.
Type designation: COOL DX-aa-G-c-d-e-f-g
GOLD size
Capacity variant
Type designation: COOLDXTOP-aa-b-c-d-1
GOLD size
Version F/G
Capacity variant

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
6 www.swegon.com
3. INSTALLATION
3.1 Legal requirements
This product relies on the fluorinated gas R410A as the
refrigerant. It is known as a greenhouse gas because
it contributes to the global warming if released to the
atmosphere.
The European Union is committed to reducing emissions
of such gases and Regulation 517/2014 (F-Gas) must be
complied with.
Ensure that you are fully aware of your local regulations
and that they are complied with.
The global warming potential (GWP) of greenhouse gases
is expressed in equivalent mass of CO2. R410A has a GWP
of 2088 as per IPCC AR4.
The F-Gas regulation requires that all steps are taken to
eliminate the release of greenhouse gases to the atmos-
phere. In accordance with Regulation 517/2014, this
product is designed and manufactured so that all parts
containing the refrigerant gas are made tight by weld-
ing, brazing or a similar permanent connection including
capped valves and capped service ports that allow proper
repair or disposal. The product is leak tested in the factory
in accordance with EN 378-2.
If the installation in which this product shall be installed
will have a total quantity of green house gas with a total
GWP equivalent to 14 tonnes then it must be reported
to the relevant authority. This is the responsibility of the
operator and must be done prior to the installation.
Regulation 517/2014 requires that this product is leak
tested periodically. Details are given in the table below.
The product shall be leak tested after installation and prior
to start-up.
Leak testing and any other service work on the refrigerant
circuit must be carried out by an authorised person with
the necessary training and certification in accordance with
Regulation 517/2014.
Note that the Regulations governing refrigerants and their
use are subject to change and it is important to follow the
latest editions.
Air handling unit Circuit Refrigerant (kg) CO2e
COOL DX 008-1/2 1
2
1.2
1.3
2.51
2.71
COOL DX 012-1/2 1
2
1.5
1.7
3.13
3.55
COOL DX 020-1 1
2
1.2
1.5
2.51
3.13
COOL DX 020-2 1
2
2.5
2.8
5.22
5.85
COOL DX 020-3 1
2
2.1
2.4
4.38
5.01
COOL DX 030-1 1
2
1.8
2.0
3.76
4.18
COOL DX 030-2 1
2
3.0
3.2
6.26
6.68
COOL DX 030-3 1
2
2.9
3.3
6.06
6.89
COOL DX 040-1 1
2
3.3
4.0
6.89
8.35
COOL DX 040-2 1
2
3.3
4.5
6.89
9.40
COOL DX 040-3 1
2
5.5
4.5
11.48
9.40
COOL DX 060-1 1
2
4.5
5.5
9.40
11.48
COOL DX 060-2 1
2
5.0
5.2
10.44
10.86
COOL DX 060-3 1
2
6.0
7.5
12.53
15.66
COOL DX 080-1 1
2
6.6
7.3
13.78
15.24
COOL DX 080-2 1
2
6.5
9.0
13.57
18.79
COOL DX 080-3 1
2
9.0
11.5
18.79
24.01
Leakage warning system not installed
COOL DX
Air handling unit Circuit Refrigerant (kg) CO2e
COOL DX Top 005-1 1
2
0.95
1.00
1.98
2.09
COOL DX Top 005-2
(not version G)
1
2
1.02
1.03
2.13
2.15
COOL DX Top 008-1 1
2
1.15
1.20
2.40
2.51
COOL DX Top 008-2
(not version G)
1
2
1.29
1.30
2.69
2.71
COOL DX Top 012-1 1
2
1.60
1.70
3.34
3.55
COOL DX Top 012-2
(not version G)
1
2
1.75
1.92
3.65
4.01
COOL DX Top
Leakage warning system not installed

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 7
3.2 Unloading/transport
within the building site
Important!
All transport should be carried out with the cooling unit
in the horizontal position.
3.2.1 Lifting using a forklift truck
Warning
The unit has a high centre of gravity! Carefully lift the
cooling unit!
3.2.2 Lifting using a crane
Position two line spreaders at the upper side of the cooling
unit and two under the underside of the pallet or under
the cooling unit and lift in the pallet (or in the base frame
of the cooling unit if the unit is not delivered on a pallet.
See sketch
3.2.3 Lifting eye bolts (not COOL DX Top)
The COOL DX Top can be lifted using the four lifting eye
bolts located in the cooling unit’s duct connections (see
illustration). Remove the lifting eye bolts after you’ve lifted
the cooling unit into position.
3.3 Arrangement
Place the COOL DX/COOL DX Top at a suitable location.
Allow an open space around the safety isolating switch/
mains power switch for servicing in accordance with appli-
cable electrical safety regulations.
The unit can be positioned with its backside against a wall;
however it is advisable to position it at a distance of ap-
prox. 1 metre away from a wall to make it easier to service
the rear compressor.

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
8 www.swegon.com
3.4 Docking configurations COOL DX
(For COOL DX Top, see Section 3.4)
Locate the COOL DX cooling unit against the outdoor
air and exhaust air side of the GOLD unit. The COOL DX
can also be installed as a stand-alone unit. If you order a
stand-alone COOL DX, select the variant with end connec-
tion panels.
The dimensions and capacities of the COOL DX are de-
signed for connection to size 008-080 GOLD air handling
units.
For a list of the cooling unit sizes and capacities that
match a given size of GOLD unit, see Section 10. General
Technical Data.
COOL DX 008
COOL DX 012-080
Right hand version Left hand version
Right hand version
Outdoor air Supply air Extract air Exhaust air
Cooling coil, lower level/GOLD supply air fan, right-hand, bottom Cooling coil, upper level/GOLD supply air fan, right-hand, top
Cooling coil, upper level/GOLD supply air fan, left-hand, top Cooling coil, lower level/GOLD supply air fan, left-hand, bottom

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 9
3.4.1 Height adjustment to the height of the
GOLD/water trap
COOL DX, size 008
In combination with the GOLD RX 008
The GOLD air handling unit can be mounted on base
beams, a stand or some other form of foundation. Base
beams and stands are available as accessories.
Appropriate base beams and stands are also available as
accessories for the COOL DX. The base beams/stands are
matched to one another in terms of height. The stands
also provide space for accommodating a possible water
trap in the lower level (right-hand unit version).
In combination with the GOLD PX 008
The air handling unit is supplied with base beams. A set of
legs (accesssory) can be mounted in the base beams.
Appropriate base beams and set of legs are also available
as accessories for the COOL DX. The base beams/sets of
legs are matched to one another in terms of height. The
sets of legs also provide space for accommodating a pos-
sible water trap in the lower level (right-hand unit version).
COOL DX, sizes 012-080
The GOLD air handling unit and the COOL DX cooling unit
are supplied with a 100 mm high base beam.
Applicable to a cooling coil in the lower level:
If a water trap (accessory) is fitted, the GOLD air handling
unit and the cooling unit must be raised at least 50 mm to
provide space for the water trap. Adjustable support feet
(accessories) can be appropriately fitted to the base beams
for this purpose.

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
10 www.swegon.com
3.4.2 Connection to the GOLD unit,
COOL DX, sizes 008-012
The sealing strips are factory-fitted to the unit.
Connect the cooling unit directly to the air handling unit
by means of the screws supplied + pre-fitted rivet nuts and
2 expansion locking devices. See figure.
Secure the cooling unit to the air handling unit from the
air handling unit’s inspection door. It may be necessary
to remove the fan assembly or filter cassettes in order to
reach the expansion-type locking device.
Expansion-type locking device
In this case, fastening is done with the bolts sup-
plied and pre-fitted rivet nuts.
COOL DX Cooling unit

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 11
3.4.3 Connection to the GOLD unit,
COOL DX, sizes 020-040
The sealing strips are factory-fitted to the unit.
Dock the cooling unit directly to the GOLD air handling
unit by means of the supplied bolts (4 bolts) + pre-fitted
rivet nuts.
In this case, fastening is done with the bolts supplied and pre-fitted rivet nuts in
predrilled holes.
Alternative 1
If there is sufficient space for working from the rear of
the air handling unit, the simplest way to secure the cool-
ing unit at the rear edge of the GOLD unit is by externally
jointing it, see Illustration 1.
Secure the cooling unit to the front edge of the GOLD air
handling unit from within the unit via the inspection cover,
see Illustration 3.
Alternative 2
The cooling unit is secured to the back edge of the GOLD
unit within the casing, see Illustration 2. This requires
removal of the fan assembly and filter cassettes.
Secure the cooling unit to the front edge of the GOLD air
handling unit within the unit via the inspection cover, see
Illustration 3.
To secure accessories to the front edge
In this case, fastening is done with the bolts supplied and pre-fitted rivet nuts in
predrilled holes.
To secure accessories to the rear edge
Alternative 1, External installation
Alternative 2, Internal installation
Illustration 2
Illustration 3
COOL DX Cooling unit
COOL DX Cooling unit
Remove the cover and insulation. Secure the cooling unit
to the GOLD air handling unit with the bolts supplied and
pre-fitted rivet nuts. Refit the cover and the insulation.
The GOLD unit, rear
Illustration 1

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
12 www.swegon.com
3.4.4 Connection to GOLD units,
COOL DX, sizes 060-080
The sealing strips are factory-fitted to the unit.
Dock the cooling unit directly to the GOLD air handling
unit by means of the supplied bolts (4 bolts) + pre-fitted
rivet nuts, see illustration.
You may need to remove the filter cassettes.
In this case, fastening is done with the bolts supplied and pre-fitted rivet nuts in
predrilled holes.
COOL DX Cooling unit

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 13
COOL DX
GOLD Extract air fan
Existing hoses for measuring
the pressure drop across the
filter in the GOLD
Nipples in the
intermediate deck
Interconnection nipples
Blue hose
White hose
Pressure
transducer
3.4.5 Stand-alone COOL DX
The variant with end connection panel should be selected.
Connect the ducts between the GOLD unit and the COOL
DX unit, see Section 3.3 Installation principle COOL DX.
It may be necessary to lengthen the communication cable
and the tubes (not included in the supply) depending on
the distance between the GOLD unit and the COOL DX
unit.
3.4.6 Supply air filter
The supply air filter in the GOLD unit should be dismantled
and moved to the COOL DX unit.
The hoses for measuring air pressure drop across the
supply air filter are supplied in the COOL DX and are con-
nected inside the COOL DX at the factory. These hoses
must however be connected to supply air filter pressure
drop measurement hoses inside the GOLD unit.
IN.B.! Do not disconnect tubes from the pressure sensor.
Disconnection of the tubes could damage the nipples on
the pressure sensor.
N.B.! There are other variants besides those shown in the
sketch. See Section 3.3 Docking Configurations COOL DX.
Run and secure the tubes in a safe manner with bundling
straps, for instance.
Sizes 008-060:
Run hoses from the COOL DX unit to the space for the
GOLD unit’s extract air fan.
Disconnect the existing tubes for filter pressure drop meas-
urement from the nipples in the GOLD unit’s intermediate
deck. To prevent leakage, seal the nipples in the intermedi-
ate deck in an appropriate manner.
Use the connector nipples supplied to interconnect the
blue tube from the COOL DX unit with the blue tube from
the GOLD unit’s pressure sensor. Interconnect the white
tubes in the same way. See illustration.
Size 080:
Run the tubes from the COOL DX unit to the space for the
GOLD unit’s supply air filter.
Interconnect the blue tube from the COOL DX unit with
the blue tube from the GOLD unit’s pressure sensor, by
connecting the blue tube from the COOL DX unit to the
nipple mounted under the GOLD unit’s filter guide rail.
Connect the white tube directly to the pressure sensor.
Sizes 008-060
Size 080
Supply air
filter (to be
dismantled)
GOLD COOL DX
Measurement
tapping
Blue tube
White tube
Pressure
sensor
Existing
blue tube

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
14 www.swegon.com
3.5 COOL DX Top
Basic installation diagram
Locate the COOL DX Top cooling unit on top of the air
handling unit, see illustration.
The dimensions and capacity of the COOL DX Top cool-
ing unit are designed for connection to the size 004-012
GOLD RX Top air handling units.
For a list of the capacity sizes of cooling units matched to
respective air handling unit size, see Section 10. General
technical data.
COOL DX Top
Right-hand versionLeft-hand version
Outdoor air Supply air Extract air Exhaust air
COOL DX Top, version F
COOL DX Top, version G

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 15
3.5.1 Connection to the GOLD air handling unit,
version F
The sealing strips are factory-fitted to the unit.
Place the COOL DX Top on top of the GOLD air handling
unit according to Section 3.4 Basic installation diagram for
the COOL DX Top.
If lifting is required, use lifting eye bolts fastened to the
duct connections, see Section 3.2.3. After you’ve finished
lifting, remove the lifting eye bolts.
The guide pins are located on the top of the GOLD unit to
felicitate correct positioning during installation. See illus-
tration.
Dismantle the service hatch. When you’ve dismantled the
service hatch, remove and discard the cover plate located
inside the cooling unit. See illustration.
The GOLD unit’s safety isolating switch is supplied loose
and is lying in the opening for the GOLD’s electric equip-
ment cubicle and should be mounted in predrilled hole on
the COOL DX Top. See illustration.
3.5.2 Drainage/Water trap, version F
Connect the drain connection to the drain pipework via
a water trap, see separate instructions for the TBXZ-1-40
water trap.
Guide pins
GOLD safety switch
Remove and
discard the cover
plate
Service hatch
Predrilled hole for the
GOLD unit’s safety switch

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
16 www.swegon.com
Guide pins
Transport protec-
tion removed and
discarded
3.5.3 Installation on GOLD air handling unit, ver-
sion G
The sealing strips are factory-fitted to the unit.
Transport protection on top of GOLD air handling unit’s
control equipment is removed prior to installation, see
illustration.
COOL DX Top is placed on top of the GOLD air handling
unit as per section 3.4 Basic Installation Diagram COOL DX
Top.
Use lifting eyes bolts in the duct connections when lifting,
see section 3.2.3 Lifting eye bolts. After lifting is complete,
remove the lifting eye bolts.
There are guide pins on top of the GOLD air handling unit
to facilitate correct placement during installation, see il-
lustration.

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 17
3.5.4 Drainage/Water trap, version G
A drainage hose is connected to the air cooler’s drain tray
and is stored rolled up in the space for the air cooler.
Also included are a pipe sleeve, pipe seal and pan head
screws.
The drainage hose should be routed and connected to
the drain connection on the end panel of the GOLD air
handling unit. For access, dismantle the cooling unit’s end
panel and open the air handling unit’s inspection hatch,
see the illustration.
The drainage must be connected to a drain via the water
trap, see the separate instruction for the water trap TBXZ-
1-40.
Drain connection
Cooling unit’s end panel
x 2
Pipe sleeve
Rubber seal
Drainage hose with flange
Cover panel
GOLD AHU

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
18 www.swegon.com
4 ELECTRICAL CONNECTIONS
The cross sectional dimension of the power supply cable
should take into consideration the ambient temperature
and the way the cable is run.
Important
Electrical installations must be carried out by an authori-
sed electrician.
4.1 Power connection
4.1.1 COOL DX
Incoming power supply
Sizes 008-020, all capacity variants and size 030, cap. vari-
ant 1:
5-wire system, 400 V ±10%.
Size 030, capacity variants 2 and 3, and sizes 040-080, all
capacity variants:
4-wire system, 400 V ±10%.
Sizes 008-040, 060-1/2
Open the inspection door in front of the electrical equip-
ment cubicle.
Open the inspection door of the electrical equipment cubi-
cle.
Pull the incoming cable for power supply through pre-drilled
hole in the cover panel of the cooling unit (supplied cable
gland is mounted), through the space for compressors and
through the cable gland of the electrical equipment cubicle.
Locate the cable in a safe way. Make sure that the cable
does not touch the compressors or other components, since
surfaces could be hot or vibrate.
Connect the incoming power supply to the safety switch
situated in the electrical equipment cubicle, see the illustra-
tion. The wiring terminal for incoming earth is situated right
next to the safety switch.
See section 10, Technical data.
Sizes 060-3, 080
Remove the cover on the external safety switch.
Connect the incoming power supply to the safety switch,
see the illustration. The wiring terminal for incoming earth
is situated right next to the safety switch.
See section 10, Technical data.
Factory-fit-
ted cables
The power
supply is con-
nected here
Safety switch block.
4.1.2 COOL DX Top, version F
Incoming power supply
Sizes 005-012 all capacity variants:
5-wire system, 400 V ±10%.
Dismantle the service hatch in front of the electrical equip-
ment cubicle.
Run the cables in a safe way. Make sure that the cables
does not touch the compressors or other components,
since surfaces could be hot or vibrate.
GOLD RX Top air handling unit
Make sure that the GOLD unit’s safety isolating switch is
installed in the correct position on the COOL DX Top cool-
ing unit, see Section 3.4.1. Connection to the GOLD air
handling unit.
Pull the incoming cable for power supply through pre-
drilled hole in the cover panel of the cooling unit (with the
supplied cable gland fitted), to the safety isolating switch
of the Gold unit, see illustration below. For wiring and
fuse protection, see the installation instructions for the
GOLD.
COOL DX Top cooling unit
Pull the incoming cable for power supply to the COOL
DX Top through pre-drilled hole in the cover panel of the
cooling unit (with the supplied cable gland fitted), to the
electrical equipment cubicle of the cooling unit. Connect
the incoming power supply to the safety switch situated in
the electrical equipment cubicle, see the illustration.
See Section 10, Technical data.
Cover panel
Service hatch
Safety switch of the
COOL DX Top cool-
ing unit
Safety switch of the
GOLD RX Top air
handling unit
Safety isolating switch block.
Factory-fitted
cables
The power
supply can be
connected here

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications. www.swegon.com 19
4.1.3 COOL DX Top, version G
Route the cable safely. Make sure that the cables do not
touch the compressors or other components, since sur-
faces could be hot or vibrate.
Internal supply connection
Open the cooling unit’s inspection door.
Dismantle the cover plate inside the inspection door, see
the illustration.
Once the cover plate has been dismantled the cable for
the power connection is visible in the space for the GOLD
air handling unit’s control equipment.
The cable is equipped with quick connector and rubber
grommet.
The quick connector with cable is guided through the
predrilled hole up to the middle of the cooling unit. Rub-
ber grommet (on the cable) is fitted in the hole. The cable
is connected to the equivalent quick connector from the
cooling unit’s control equipment.
Incoming power supply
Sizes 005-012, all capacity variants:
5-core system, 400 V ±10%.
Pull the incoming cable for power supply to COOL DX Top
through the cable gland in the cooling unit’s cover plate.
Connect the incoming power supply to the safety switch,
see the illustration. Dismantle the safety isolating switch to
facilitate connection.
See section 10, Technical data.
Cover plate
Predrilled holes
Quick connectors for
internal power connec-
tion
Cable gland
Safety isolating switch
Supply is con-
nected here
Safety switch block.
Factory-fitted
cables

GB.COOLDX.IN.G.200701
We reserve the right to alter specifications.
20 www.swegon.com
4.2 To connect the communication cable
Only a communication cable is required for the trans-
mission of information between the COOL DX and the
GOLD control systems. All in-operation status and other
information are readily available for viewing in the hand-
held terminal of the GOLD air handling unit.
4.2.1 COOL DX
The communication cable is wired to the electric equip-
ment of the COOL DX cooling unit and run to the
outside of the COOL DX unit, where it is rolled up and
secured. Lay the communications cable in a safe manner
from the COOL DX to the GOLD air handling unit.
GOLD installation
The communication cable should be connected to any
of the bus ports marked COM1, COM2 or COM3 on the
control unit, see encircled area on illustration.
Use one of the holes in the oblong rubber-coated cable
gland on the rear side of the connection hood of the
electric cubicle or on the inspection side of the air han-
dling unit, through which to feed the cable into control-
ler.
Move part of the cable gland to the side in order to be
able to pull the communication cable through. Connect
the cable to a bus port on control unit. Adjust the length
of the cable inside the electric cubicle and adjust the ca-
ble in the cable gland. Refit the cable gland in its correct
position again.
Temperature sensors are installed as standard for the
outdoor compensation, cooling stop blocking, boosted
cooling, summer night cooling, COOL DX comfort con-
trol and pump control functions for heating coils.
4.2.2 COOL DX Top
The communication cable is connected to the COOL DX
Top’s electric equipment and is lying rolled up in the COOL
DX Top. Run and extend the communication cable, in a
safe manner, into the electric equipment cubicle of the
GOLD unit through the opening in the top of the GOLD
unit.
GOLD installation
The communication cable should be connected to any
of the bus ports marked COM1, COM2 or COM3 on the
control unit, see encircled area on illustration.
The temperature sensors for the outdoor compensation,
cooling step blocking, boosted cooling, summer night
cooling, COOL DX Comfort control and air heater pump
control functions are mounted as standard.
SD
WLAN
CPU 1
CPU 2
1
A2 B3 GND 4 +5 -6 +7 -8 +9 -10
+11 -12 +13 -
SA TempCom 5Com 4Com 3Com 2Com 1
14
+15 -16 +17 -18 +19 -
Heat Cool
20
C21 NO 22 C23 NO 24 C25 NO 26 C27 NO 28 P29 G30 G0 31 G32 G0
24V AC
Sensor 1 Sensor 2 Sensor 4Sensor 3 Com 6 Com 7 Com 8 Com 9 Com 10 Com 11
+
33 - 34 G 35 G0 36 Y 37 U 38 39 40
24V AC In
41 42
18V AC In
45 46
230V AC In
4743 44
230V AC Out
SD
WLAN
CPU 1
CPU 2
1
A2 B3 GND 4 +5 -6 +7 -8 +9 -10
+11 -12 +13 -
SA TempCom 5Com 4Com 3Com 2Com 1
14
+15 -16 +17 -18 +19 -
Heat Cool
20
C21 NO 22 C23 NO 24 C25 NO 26 C27 NO 28 P29 G30 G0 31 G32 G0
24V AC
Sensor 1 Sensor 2 Sensor 4Sensor 3 Com 6 Com 7 Com 8 Com 9 Com 10 Com 11
+
33 - 34 G 35 G0 36 Y 37 U 38 39 40
24V AC In
41 42
18V AC In
45 46
230V AC In
4743 44
230V AC Out