Instructions

Instructions
Luft/Wasser-Wärmetauscher
Air/water heat exchangers
Echangeurs thermiques air/eau
Lucht/water-warmtewisselaars
Luft/vatten värmeväxlare
Scambiatori di calore aria/acqua
Intercambiadores de calor aire/agua
SK 3363.XXX
SK 3364.XXX
Montage-, Installations- und Bedienungsanleitung
Assembly and operating instructions
Notice d’emploi, d’installation et de montage
Montage- en bedieningshandleiding
Montage- och hanteringsanvisning
Istruzioni di montaggio e funzionamento
Instrucciones de montaje y funcionamiento
SK 3373.XXX
SK 3374.XXX
SK 3375.XXX
Contents
EN
1 Notes on documentation. . . . . . . . . . 3
1.1
1.2
1.3
1.4
Associated documents . . . . . . . . . . . . . . . .
CE labelling . . . . . . . . . . . . . . . . . . . . . . . . .
Retention of documents . . . . . . . . . . . . . . .
Symbols used. . . . . . . . . . . . . . . . . . . . . . . .
3
3
3
3
2 Safety notes . . . . . . . . . . . . . . . . . . . . 3
3 Device description . . . . . . . . . . . . . . . 4
3.1
3.1.1
3.1.2
3.1.3
3.1.4
3.1.5
3.1.6
3.1.7
3.1.8
3.2
3.3
Functional description . . . . . . . . . . . . . . . .
How it works. . . . . . . . . . . . . . . . . . . . . . . . . .
Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bus mode
(e-Comfort controller only) . . . . . . . . . . . . . . .
Safety equipment . . . . . . . . . . . . . . . . . . . . . .
Condensation. . . . . . . . . . . . . . . . . . . . . . . . .
Leak detection
(e-Comfort controller only) . . . . . . . . . . . . . . .
Door limit switch
(e-Comfort controller only) . . . . . . . . . . . . . . .
Additional interface X3
(e-Comfort controller only) . . . . . . . . . . . . . . .
Proper use . . . . . . . . . . . . . . . . . . . . . . . . . .
Scope of supply . . . . . . . . . . . . . . . . . . . . . .
4
4
4
4
5
5
5
5
5
5
5
4 Assembly and connection . . . . . . . . 6
4.1
4.2
4.2.1
4.2.2
4.3
4.3.1
4.3.2
4.4
4.5
4.5.1
4.5.2
4.6
4.6.1
4.6.2
4.6.3
4.6.4
4.6.5
Choosing the installation site . . . . . . . . . . . 6
Assembly instructions . . . . . . . . . . . . . . . . 6
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Layout of the components in the enclosure. . 6
Assembling the air/water
heat exchanger. . . . . . . . . . . . . . . . . . . . . . . 7
Preparing the mounting cut-out . . . . . . . . . . . 7
Assembling the air/water heat exchanger . . . 7
Connecting the condensate discharge . . . 9
Connecting the water connection . . . . . . . 9
Notes on water quality . . . . . . . . . . . . . . . . . 10
Preparation and maintenance of the water
in recooling systems . . . . . . . . . . . . . . . . . . 10
Notes on electrical installation . . . . . . . . . 11
Connection data . . . . . . . . . . . . . . . . . . . . . 11
Overvoltage protection
and supply line load . . . . . . . . . . . . . . . . . . 11
Door limit switch
(e-Comfort controller only) . . . . . . . . . . . . . . 11
Potential equalisation . . . . . . . . . . . . . . . . . . 11
Installing the power supply . . . . . . . . . . . . . 11
5 Commissioning . . . . . . . . . . . . . . . . 13
2
6 Operation . . . . . . . . . . . . . . . . . . . . . 13
6.1
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
6.1.10
6.2
6.2.1
6.2.2
6.2.3
6.2.4
6.2.5
6.2.6
6.2.7
6.2.8
6.2.9
6.2.10
Control using the Basic controller . . . . .
Display and system analysis. . . . . . . . . . . .
Properties . . . . . . . . . . . . . . . . . . . . . . . . . .
General programming information . . . . . . .
Operation of the Basic controller . . . . . . . .
Setting the temperature. . . . . . . . . . . . . . . .
Setting of system messages . . . . . . . . . . . .
Programming and control
of the Basic controller . . . . . . . . . . . . . . . . .
Reset of r6 and r7
(min./max. internal temperature) . . . . . . . . .
System message contact (K1; floating) . . .
Programming overview of Basic controller .
Control using the e-Comfort controller. .
Properties . . . . . . . . . . . . . . . . . . . . . . . . . .
Launching test mode . . . . . . . . . . . . . . . . .
General programming information . . . . . . .
Eco-mode . . . . . . . . . . . . . . . . . . . . . . . . . .
Editable parameters . . . . . . . . . . . . . . . . . .
Bus connection
(only when interconnecting several units
with an e-Comfort controller). . . . . . . . . . . .
Programming overview
of e-Comfort controller . . . . . . . . . . . . . . . .
Defining system messages for evaluation .
Setting the master-slave identifier. . . . . . . .
Evaluating system messages . . . . . . . . . . .
13
13
13
13
13
14
14
14
14
15
15
16
16
16
16
17
18
19
20
21
21
22
7 Inspection and maintenance. . . . . . 23
7.1
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8 Emptying, storage and disposal. . . 23
9 Technical specifications . . . . . . . . . 24
10 List of spare parts . . . . . . . . . . . . . . 27
11 Further technical information . . . . . 28
11.1 Hydrological data . . . . . . . . . . . . . . . . . . . 28
11.2 Characteristic curves . . . . . . . . . . . . . . . . 29
11.2.1 Water resistance . . . . . . . . . . . . . . . . . . . . . 29
12 Appendix 1:
Cut-out and hole sizes . . . . . . . . . . . 30
12.1
Dimensions for external
and internal mounting. . . . . . . . . . . . . . . . 30
13 Appendix 2:
Application example
Parallel connection of
4 air/water heat exchangers . . . . . . 33
Rittal air/water heat exchanger assembly instructions
1 Notes on documentation
1
Notes on documentation
These assembly instructions are aimed at tradespersons who are familiar with assembly and installation
of the air/water heat exchanger, and are trained
specialists who are familiar with the operation of the
air/water heat exchanger.
1.1 Associated documents
There is one set of instructions for the unit types
described here:
– Assembly, installation and operating instructions
enclosed with the unit as a printed document
and/or on CD-ROM.
We cannot accept any liability for damage associated with failure to observe these instructions.
Where applicable, the instructions for any accessories used also apply.
1.2 CE labelling
The declaration of conformity is supplied with the unit
as a separate document.
1.3 Retention of documents
These instructions and all associated documents
constitute an integral part of the product. They must
be given to the plant operator. The plant operator is
responsible for storage of the documents so they
are readily available when needed.
1.4 Symbols used
2
Safety notes
Please observe the following general safety notes
when assembling and operating the unit:
– Assembly, installation and servicing may only be
performed by properly trained specialists.
– The minimum water inlet temperature of +1 °C
must not be reduced at any point in the water
cycle. Otherwise there is danger of frost damage!
– Use antifreeze agents only with the manufacturer’s
consent.
– Do not obstruct the air inlet and air outlet of the
air/water heat exchanger inside the enclosure
(see also section 4.2.2).
– The heat loss of the components installed in the
enclosure must not exceed the specific useful
cooling output of the air/water heat exchanger.
– Use only original spare parts and accessories.
– Do not make any changes to the air/water heat
exchanger other than those described in these
instructions or associated instructions.
– The mains connector of the air/water heat
exchanger must only be connected and
disconnected with the system de-energised.
Connect the pre-fuse specified on the rating
plate.
– Always disconnect the unit from the supply
voltage before servicing or maintenance work.
– Readily flammable objects/materials must not
be stored in the immediate vicinity of the air/water
heat exchanger.
Please observe the following safety instructions and
other notes in this guide:
Symbol identifying required actions:
䡲 The bullet point indicates an action to be performed.
Safety and other notes:
Danger!
Immediate danger to life and limb!
Caution!
Potential threat to the product
and its environment.
Note:
Useful information and special features.
Rittal air/water heat exchanger assembly instructions
3
EN
3 Device description
3
EN
Device description
Depending on the model chosen, your air/water
heat exchanger may vary in appearance from the
illustrations contained in these instructions.
However, the functions are identical in principle.
3.1.1 How it works
The air/water heat exchanger comprises of the following main components (cf. fig. 2): Heat exchanger
package (1), fan (2), magnetic valve (3), temperature
control (4) and non-return valve (5).
Fan (2)
1
Temperature control
(4)
Heat
exchanger
(1)
2
3
4
5
6
Non-return
valve (5)
(for units with
e-Comfort
controller
only)
Cooling water return
7
8
9
10
11
Fig. 1:
Key
1
2
3
4
5
6
7
8
9
10
11
Device description
Cover
Display (controller)
X1 terminal strip (unit rear)
X2 master/slave connection (e-Comfort controller)
X3 optional serial interface (unit rear)
Potential equalisation
Rating plate
Cooling water inflow (underside of the unit)
Condensate discharge (underside of the unit)
Cooling water return (underside of the unit)
Dispatch bag
3.1 Functional description
Air/water heat exchangers are designed and built to
dissipate heat from enclosures by cooling the air inside the enclosure and so protect the temperaturesensitive components. Air/water heat exchangers
are particularly appropriate for the temperature
range of up to +70 °C where comparable units, such
as air/air heat exchangers, enclosure cooling units or
fan-and-filter units, cannot be used for system reasons to effectively and economically dissipate heat
loss. The air/water heat exchanger may be externally
and internally mounted on all enclosure outer walls.
4
Magnetic
valve (3)
Fig. 2:
Cooling water inlet
Air/water heat exchanger
The heat loss of the enclosure is dissipated in
a membrane heat exchanger to the water coolant.
A fan (2) blows the internal enclosure air over the
heat exchanger (1); except for the inlet and outlet
water and the condensed water discharge, the unit
is closed to the environment. The magnetic valve (3)
controls the cooling output by changing the water
flow volume depending on the required setpoint
temperature and the water inlet temperature.
3.1.2 Control
Rittal air/water heat exchangers are fitted with a
controller for setting the functions of the heat exchanger. Depending on the design, this is either
a Basic controller or an e-Comfort controller (display
plus extended functions, see chapter “6 Operation”,
page 13).
3.1.3 Bus mode (e-Comfort controller only)
The serial unit interface X2 allows you to create a bus
connection with up to ten air/water heat exchangers
using the master/slave cable (shielded, four-wire
cable, Model No. SK 3124.100). This allows you to
implement the following functions:
– Parallel unit control
(the air/water heat exchangers in the network
can be switched on and off simultaneously)
– Parallel door status message (“door open”)
– Parallel collective fault message
Data is exchanged via the master-slave connection.
During commissioning, assign an address to each
unit that also includes the identifier “master” or
“slave”.
(See also chapter “6.2.9 Setting the master-slave
identifier”, page 21).
Rittal air/water heat exchanger assembly instructions
3 Device description
3.1.4 Safety equipment
– To protect against overcurrent, the fan is equipped
with a thermal winding protection.
– The device has floating contacts on the connection
terminal (terminals 3 – 5), which may be used to
retrieve system messages from the device, e.g. via
PLC (1 x change-over contact Basic controller,
2 x normally open contacts e-Comfort controller).
– Air/water heat exchangers with e-Comfort controller possess a leakage sensor and a condensate
warning.
3.1.5 Condensation
At high levels of humidity and low cooling water temperatures inside the enclosure, condensation may
form on the heat exchanger.
Any condensation that forms on the heat exchanger
(with high humidity and low water temperatures)
is routed to the bottom and out of the unit via a drain
opening in the heat exchanger tray. For this purpose,
a hose must be connected to the condensate nozzle
(see “4.4 Connecting the condensate discharge”,
page 9). The condensate must be able to run off
freely. The hose used for draining off condensate
must be laid free from kinks and checked for correct
drainage.
Air/water heat exchangers with e-Comfort controller
possess a leakage sensor and a condensate
warning.
Condensate hoses are available as accessories
(refer also to Accessories in the Rittal Catalogue).
3.1.6 Leak detection
(e-Comfort controller only)
If a leakage or pipe breakage occurs in the water
circuit of the air/water heat exchanger, a magnetic
valve immediately stops the cooling water supply,
the floating change-over contact is activated and the
fan switched off.
3.1.7 Door limit switch
(e-Comfort controller only)
The air/water heat exchanger may be operated with
a door limit switch connected. The door limit switch
is not included with the supply (available as an
accessory, Model No. SZ 4127.010).
The door limit switch function causes the fan and the
magnetic valve in the air/water heat exchanger to be
switched off after approximately 15 seconds when
the enclosure door is opened (contacts 1 and 2
closed). This prevents the formation of condensation
inside the enclosure while the enclosure door is
open.
The fan will start up after about 15 seconds on
closure of the door. The connection is made at terminals 1 and 2. The extra-low voltage is supplied
by the internal power pack; the current is approx.
30 mA DC.
Rittal air/water heat exchanger assembly instructions
Note:
The door limit switches must only be
connected free from potential.
No external voltages!
EN
3.1.8 Additional interface X3
(e-Comfort controller only)
Note:
The electrical signals at the interface
are of an extra-low voltage
(not extra-low safety voltages to EN 60 335).
An additional interface card may be connected to
the 9-pole SUB-D connector X3 in order to incorporate the air/water heat exchanger into higher-level
monitoring systems (available as an accessory,
interface card Model No. SK 3124.200).
3.2 Proper use
Rittal air/water heat exchangers were developed and
designed in accordance with the state of the art and
the recognised rules governing technical safety.
Nevertheless, if used improperly, they may pose a
threat to life and limb or cause damage to property.
The unit is only intended for cooling enclosures.
Any other use is deemed improper. The manufacturer will not be liable for any damages caused as
a result of improper use, or for incorrect assembly,
installation or use. All risk is borne solely by the user.
Proper usage also includes the observation of all
valid documents and compliance with the inspection
and servicing conditions.
3.3 Scope of supply
The unit is supplied in a packaging unit in a fully
assembled state. Please check the scope of supply
for completeness.
Quantity
Description
1
Air/water heat exchanger
1
1
1
4
4
1
1
Dispatch bag:
– Sealing tape
– Plug-in terminal strip
– Spacer bolts including assembly parts
– Sealing bungs (not with unit types
SK 3363.XXX/SK 3364.XXX)
– Assembly, installation and
operating instructions
– Declaration of conformity
– Safety notes
1
Drilling template
1
Tab. 1: Scope of supply
5
4 Assembly and connection
4
EN
Assembly and connection
4.1 Choosing the installation site
When choosing the installation site for the enclosure,
please observe the following:
– The air/water heat exchanger must be installed
and operated in a vertical position (maximum
deviation: 2°).
– The ambient temperature must not exceed +70 °C.
– It must be possible to fit a condensate discharge
(see “4.4 Connecting the condensate discharge”,
page 9).
– It must be possible to fit a cooling water supply and
return (see “4.5 Connecting the water connection”,
page 9).
– The mains connection data as stated on the rating
plate of the unit must be guaranteed.
– For ease of servicing, appropriate access to the
device must be guaranteed.
Fig. 3:
Exercise particular caution with the airflow from the
blowers of built-in electronic components (see fig. 3).
Note:
The air/water heat exchangers should
never be fitted directly behind the mounting
plate. If it is not possible to install the unit
any other way, appropriate air baffle plates
should be used, and air inlet and outlet
openings should be provided in the mounting plate.
It is important to ensure even air circulation
inside the enclosure. Under no circumstances should air inlet and outlet openings
be obstructed, otherwise the cooling performance of the unit will be reduced. Ensure
a suitable distance from electronic components and other installed enclosures
so that the required air circulation is not
obstructed and prevented.
4.2 Assembly instructions
4.2.1 General
– Check the packaging carefully for signs of damage.
Any packaging damage may be the cause of a
subsequent functional failure.
– The enclosure must be sealed on all sides (IP 54).
Increased condensation will occur if the enclosure is
not airtight.
– The air inlet and outlet must not be obstructed on the
inside of the enclosure.
4.2.2 Layout of the components in the enclosure
Caution! Risk of condensation!
When arranging the components inside
the enclosure, please ensure that the cold
airflow from the air/water heat exchanger
is not directed at active components.
Please also ensure that the cold airflow is
not directed at the warm exhaust airflow
from active components such as inverters.
This may lead to an air short-circuit and
therefore prevent adequate climate control, or may even cause the air/water heat
exchanger’s internal safety devices to
cease cooling operation.
200
Fig. 4:
6
Never direct the cold airflow at active components
Targeted air routing inside the enclosure
Rittal air/water heat exchanger assembly instructions
4 Assembly and connection
4.3 Assembling the
air/water heat exchanger
External mounting
The air/water heat exchanger can be mounted on the
outer walls or the door of the enclosure.
For this purpose, the appropriate enclosure panel
or door must be cut out using the supplied drilling
template.
Step 1:
䡲 Stick sealing tape to all four edges at the rear of
the device.
4.3.1 Preparing the mounting cut-out
䡲 Stick the supplied drilling template onto the side
panel or door of the enclosure using adhesive
tape. The heat exchanger is suitable for both external and internal mounting.
There are dimensioning lines on the drilling template
to suit the installation type for your air/water heat
exchanger.
Risk of injury!
Carefully deburr all cut-outs to prevent
injuries caused by sharp edges.
䡲
Make the cut-outs including the line width as per
the drilling template. Deburr the cut-outs.
Note:
In order to achieve a permanent seal
between the air/water heat exchanger and
the enclosure, the mounting surface should
be reinforced or supported if necessary.
EN
1.
Fig. 5:
Stick sealing tape to all four edges
Step 2:
䡲 Insert the 4 spacers (external thread) into the
mounting surface through the holes, and secure
from the inside of the enclosure using the relevant
washers and nuts.
2.
4x
Fig. 6:
Insert the spacers through the holes and secure
Step 3:
䡲 Push the device over the spacers and secure with
the relevant rubber washers, washers and screws
(observe the correct assembly sequence).
1
3.
4.3.2 Assembling the air/water heat exchanger
Note:
For both types of mounting (internal and
external), use the assembly parts supplied
in the pack.
1
Fig. 7:
Rubber
Push the device over the spacers and screw-fasten
Note:
For models SK 3373.XXX, 3374.XXX and
3375.XXX, steps 4 and 5 are additionally
required.
Rittal air/water heat exchanger assembly instructions
7
4 Assembly and connection
EN
Step 4:
䡲 Twist the side locking screws in the enclosure
cover in a clockwise direction as far as they will go,
until the sealing tape adheres securely.
Full internal mounting
Step 1:
䡲 Stick sealing tape to all four edges at the front of
the device.
4.
1.
TX30
4x
Fig. 10:
Stick sealing tape to all four edges
Step 2:
䡲 Hold the 4 spacers (internal thread) in place on
the inside of the enclosure, and secure from the
outside using the relevant washers and screws.
Fig. 8:
Twist the screws in a clockwise direction as far as
they will go
Step 5:
䡲 Using the stoppers, seal the 4 openings in the
cover.
5.
2.
Fig. 11:
4x
Secure the spacers
Step 3:
䡲 Push the device over the spacers and secure with
the relevant washers and nuts.
3.
4x
Fig. 12:
Push the device over the spacers and screw-fasten
Note:
For models SK 3373.XXX, 3374.XXX and
3375.XXX, step 4 is additionally required.
Fig. 9:
Seal the openings in the cover
Step 4:
䡲 Using the stoppers, seal the 4 openings in the
cover.
4.
4x
Fig. 13:
Seal the openings in the cover
Note:
The enclosure must be sealed on all sides,
especially in the vicinity of the cable entry
openings and the enclosure base.
8
Rittal air/water heat exchanger assembly instructions
4 Assembly and connection
4.4 Connecting the condensate discharge
A flexible condensate discharge hose Ø 12 mm (1/2˝)
can be fitted to the air/water heat exchanger
(see fig. 14).
The condensate discharge
– must be laid with a suitable and constant gradient
(no siphoning).
– must be laid without kinks.
– must not have a reduced cross-section if extended.
The condensate hose is available as an accessory
(refer also to Accessories in the Rittal Catalogue).
EN
3
1
2
1
Fig. 15:
2
Connecting the cooling water inlet and return
Key
1 Cooling water connection (inlet)
2 Cooling water connection (return)
3 Condensate discharge
3
Fig. 14:
Connecting the condensate discharge
Key
1 Cooling water connection (inlet)
2 Cooling water connection (return)
3 Condensate discharge
䡲
Connect a suitable hose to the condensate nozzle
(at the bottom of the unit) and secure it with a hose
clip (with 2 Nm torque).
䡲 Lay the condensate hose, e.g. into a drain.
䡲 To prevent the water from backing up, the hose
cross-section must not be restricted!
b) Fixed pipework with G 3/8˝ external thread
(included with the supply)
In its delivered state, fixed pipework with a G 3/8˝
external thread may be connected to the air/water
heat exchanger for both the inlet and the return.
䡲 To this end, you will need to remove the connector
sleeve attached to the device (see fig. 16).
䡲 The fixed pipework should be tightened with
25 Nm.
4.5 Connecting the water connection
There are 4 different options for connecting water to
the air/water heat exchanger.
a) 1/2˝ connector sleeve (included with the supply)
In its delivered state, a compression-proof, flexible
cooling water hose Ø 12 mm (1/2˝) may be connected
to the air/water heat exchanger for both the inlet and
the return.
The cooling water hose
– must be laid without kinks
– must not have a reduced cross-section if extended
and, if necessary, must be insulated.
Rittal air/water heat exchanger assembly instructions
25 Nm
Fig. 16:
Remove the connector sleeve
Note:
When loosening the connector sleeve, it is
vital to ensure that the fitting on the device
end is fixed with an SW22 open-jawed
spanner. The connection inside the device
could develop a leak.
9
4 Assembly and connection
EN
c) Fixed pipework with G 3/8˝ internal thread
(Model No. SK 3201.900)
The G 3/8˝ internal thread adaptor, available as an
accessory, allows you to connect fixed pipework to
the air/water heat exchanger for both the inlet and
the return.
䡲 To this end, you will need to remove the connector
sleeve attached to the device (see page 9, fig. 16).
d) Fixed pipework with 1/2˝ NPT
(Model No. SK 3201.930)
The 1/2˝ NPT adaptor, available as an accessory,
allows you to connect fixed pipework to the air/water
heat exchanger for both the inlet and the return.
䡲 To this end, you will need to remove the connector
sleeve attached to the device (see page 9, fig. 16).
Note:
The water circuit should be protected
from ingress of dirt or excess pressure
(maximum permitted operating pressure
10 bar)!
Note:
Observe the flow direction
and check for leaks!
Note:
The units do not have any separate
ventilation.
For pressure-sealed systems, install the
appropriate ventilation equipment on the
water side.
4.5.1 Notes on water quality
To ensure the reliable operation of the abovementioned units, the VBG guidelines for cooling
water must be observed (VGB-R 455 P).
The cooling water must not contain any limescale
deposits; in other words, it should have a low level of
hardness, in particular, a low level of calcium hardness. For recooling within the plant, the calcium
hardness should not be too high. On the other hand,
the water should not be so soft that it attacks the
materials. When recooling the cooling water, the salt
content should not be allowed to increase excessively due to the evaporation of large quantities of
water, since electrical conductivity increases as the
concentration of dissolved substances rises, and the
water thereby becomes more corrosive.
䡲 Always add the appropriate volume of fresh water.
䡲 Always remove part of the enriched water.
10
The following criteria for the cooling water must be
observed:
– Water with high gypsum content is unsuitable for
cooling purposes because it has a tendency to
form boiler scale that is particularly difficult to
remove.
– The cooling water should be free from iron and
manganese, because otherwise deposits may
occur that accumulate in the pipes and block
them.
– At best, organic substances should only be
present in small quantities, because otherwise
sludge deposits and microbiological contamination may occur.
4.5.2 Preparation and maintenance of the water
in recooling systems
Depending on the type of installation to be cooled,
certain requirements are placed on the cooling water
with respect to purity. According to the level of contamination and the size and design of the recooling
systems, a suitable process is used to prepare and/
or maintain the water.
The most common types of contamination and most
frequently used techniques to eliminate them in
industrial cooling are:
Contamination
of the water
Procedure
Mechanical
contamination
Filter the water using:
– Mesh filter
– Gravel filter
– Cartridge filter
– Precoated filter
Excessive hardness
Water softening
via ion exchange
Moderate content
of mechanical
contaminants and
hardeners
Addition of stabilisers
and/or dispersing agents
to the water
Moderate content of
chemical contaminants
Addition of passifiers
and/or inhibitors
to the water
Biological contaminants,
slime bacteria and algae
Addition of biocides
to the water
Tab. 2: Water contaminants
Rittal air/water heat exchanger assembly instructions
4 Assembly and connection
4.6 Notes on electrical installation
When performing the electrical installation, it is important to observe all valid national and regional regulations as well as the provisions of the responsible
power supply company. Electrical installation must
only be carried out by a qualified electrician who
is responsible for compliance with the existing
standards and regulations.
4.6.1 Connection data
– The connected voltage and frequency must correspond to the values stated on the rating plate.
– The air/water heat exchanger must be connected
to the mains via an all-pin isolating device which
ensures at least 3 mm contact opening when
switched off.
– No additional temperature control may be connected upstream of the unit at the supply end.
– Install the pre-fuse cited on the rating plate
(miniature circuit-breaker or gG/(gL) fuse) to
protect the cable and equipment from shortcircuits.
– The mains connection must ensure low-noise
potential equalisation.
4.6.4 Potential equalisation
Rittal recommends connecting a conductor with
a nominal cross-section of at least 6 mm2 to the
potential equalisation connection point on the air/
water heat exchanger and incorporating it into the
existing potential equalisation system.
According to the standard, the PE conductor in
the mains connection cable is not classified as an
equipotential bonding conductor.
EN
4.6.5 Installing the power supply
䡲 Complete the electrical installation in accordance
with the wiring plan to be found on the rear of the
air/water heat exchanger.
䡲 For devices SK 3363.XXX and SK 3364.XXX in
special voltage variants, an external transformer is
required (see also Rittal system accessories).
䡲 To be able to evaluate the system messages of the
air/water heat exchanger via the system message
relay, a corresponding low-voltage cable must be
connected additionally on terminals 3 – 5.
4.6.2 Overvoltage protection
and supply line load
– The unit does not have its own overvoltage protection. Measures must be taken by the operator at
the supply end to ensure effective lightning and
overvoltage protection. The mains voltage must
not exceed a tolerance of ±10%.
– The fans in single-phase units are intrinsically safe
(thermal winding protection). The same also
applies to all transformer versions and to specialvoltage units which are likewise equipped with
a transformer.
4.6.3 Door limit switch
(e-Comfort controller only)
– Each door limit switch must only be assigned to
one air/water heat exchanger.
– Several door limit switches may be connected
in parallel and operated on one air/water heat
exchanger.
– The minimum cross-section of the connection
cable is 0.3 mm2 for a cable length of 2 m.
We recommend the use of a shielded cable.
– The line resistance to the door limit switch must
not exceed a maximum of 50 Ω.
– The door limit switch only supports a floating
connection; no external voltages.
– The contact of the door limit switch must be closed
when the door is open.
The safety extra-low voltage for the door limit switch
is provided by the internal power pack: current
approx. 30 mA DC.
䡲 Connect the door limit switch to terminals 1 and
2 of the connector.
䡲 The door limit switch is available as an accessory
(Model No. SZ 4147.010).
Rittal air/water heat exchanger assembly instructions
11
4 Assembly and connection
Mains
SK 3363.5XX, SK 3364.5XX,
SK 3373.5XX, SK 3374.5XX, SK 3375.5XX
21
SK 3363.1XX, SK 3364.1XX,
SK 3373.1XX, SK 3374.1XX, SK 3375.1XX
A2
Mains
Option T1 PE
L2
N
L1
L1
X1
L1
N
PE
1
2
3
4
S1
22
EN
Option T1
5
L1
L2/N
8
T1
L2
N
L1
X1
L1
L2
N
L2/N
PE
1
2
3
4
5
X2
PE
T1
L1 L1/N
PE
1 2 3
3
L N
Kx
Power/G1
D0-E/Kx
2
1
8 pol.
TO INTERFACE
NTC_I
3
1 2 3
PE
B1
L N
Power/G1
PE
NTC_E
D0-E D0-I
/Y1 /M2
1
2
3
1
3
2
2
S1 K2
K1
MS1 Serial
2
A2
PE
A1
Term
NTC_I
NTC_E
NTC_C
NTC_A
Level
4
2
B1
S2
4
M1
M2
M4
1 2 3
1 2 3
1 2 3
PE
C2
M
1~
Fig. 17:
Electrical wiring plan no. 1
Key
A1
A2
B1
C2
Kx
M2
S2
X1
Y1
T1
Power PCB
Display terminal
Temperature sensor, internal temperature
Operating capacitors
Collective fault relay
Fan
Float-actuated switch (optional)
Main terminal strip (terminals 1 and 2 are free)
Magnetic valve
Transformer (optional)
F2
2
1
S
S2
C2
Y1
M2
1
Kx
PE
Y1
8
L1 L1/N
2
A1
PE
X3
PE
AC
1~
M2
Fig. 18:
Key
A1
A2
B1
Kx
M2
C2
S1
S2
X1
X2
X3
T1
Y1
Electrical wiring plan no. 2
Power PCB
Temperature sensor
(Basic or e-Comfort controller)
Temperature sensor, internal temperature
Relay K1 collective fault 1
Relay K2 collective fault 2
Fan
Operating capacitor
Door limit switch
(without door limit switch: terminal 1, 2 open)
Float-actuated switch (closed without water)
Main terminal strip
Master-slave connection
Serial interface (optional)
Transformer (optional)
Magnetic valve
Note:
For technical data, refer to the rating plate.
AC
cos f = 1
DC
L/R = 20 ms
I max. = 2 A
U max. = 250 V
I min. = 100 mA
U max. = 200 V
U min. = 18 V
I max. = 4 A
Tab. 3: Contact data
12
Rittal air/water heat exchanger assembly instructions
5 Commissioning
5
Commissioning
䡲
Once all the assembly and installation work is
complete, switch on the power supply to the
air/water heat exchanger.
The air/water heat exchanger starts running:
– with Basic controller: The enclosure internal
temperature is displayed.
– with e-Comfort controller: The software version
of the controller first appears for approx. 2 sec.,
then the enclosure internal temperature appears in
the 7-segment display.
You can now make your individual settings on the
unit, e.g. set the temperature or (with e-Comfort
controller only) assign the network identifier, etc.
(refer to the “Operation” chapter).
Note on limiting the volumetric flow
From a volumetric flow of > 400 l/h, no
significant increase in cooling output is
achieved. Appropriate measures must be
taken to regulate the flow rate, e.g. balancing valves (Model No. SK 3301.930/.940).
6
Operation
You can operate the air/water heat exchanger using
the controller on the front of the unit (fig. 1, no. 2,
page 4).
6.1 Control using the Basic controller
For unit types SK 3363.1XX to 3375.1XX.
6.1.1 Display and system analysis
H2 = Key
H1 = Display terminal
Fig. 19:
K1
H3 = Key
The built-in Basic controller ensures automatic
normal shut-down operation of the air/water heat
exchanger by the value of the fixed preset switching
difference of 5 K.
6.1.3 General programming information
Using buttons H2, H3 and H4 (fig. 19) you can
change 3 parameters within the preset ranges
(min. value, max. value). Tables 5 and 6 on page 14
show the parameters which can be altered.
6.1.4 Operation of the Basic controller
The display terminal “H1” consists of a 3-position
7-segment display which indicates the temperature
in °C as well as any system messages. The current
enclosure internal temperature is usually displayed
permanently. In the event of a system message, this
will alternate with the internal temperature display.
Note:
With the Basic controller, the temperature is
preset at the factory to +35 °C. In order to
save energy, do not set the temperature
lower than that actually necessary.
6.1.5 Setting the temperature
The setting of the enclosure internal temperature is
preset at the factory to 35 °C. To change the value
press key H2 (▲ K1) or H3 (▼ K2) for one second until
°1 appears in the display, then confirm with the H4
“set” key.
The set value can then be altered within the preset
parameters (+20 °C to +55 °C) via the keys H2
(▲ K1) or H3 (▼ K2). Press the H4 “set” key for
5 seconds to save the new value. The current enclosure internal temperature is displayed again.
H4 = Key set/°F
K2
Display and system analysis of the Basic controller
Alarm System
no.
message
Cause
Remedy
HI
Internal
temperature
of enclosure
too high
Cooling capacity
inadequate/
unit undersized/
unit defective
Check
cooling
capacity/
check unit
LO
Internal
temperature
of enclosure
too low
Ambient tempera- Check unit
ture too low/
no heat loss in
the enclosure
Tab. 4: Warning messages on the display
6.1.2 Properties
The air/water heat exchanger operates automatically, i.e. after switching on the power supply, the
fan (see fig. 2, page 4) will run continuously and
permanently circulate the internal enclosure air.
The magnetic valve controls the cooling water flow
as specified by the temperature setpoint.
Rittal air/water heat exchanger assembly instructions
13
EN
6 Operation
EN
6.1.6 Setting of system messages
To change the system messages keep the H4 “set”
key pressed for 5 seconds. The controller is now in
programming mode. While in programming mode,
if you do not press any buttons for approx. 60 sec.,
the display will first flash, then the controller will
switch back to normal display mode.
You can then navigate in the levels with the H2 (▲ K1)
or H3 (▼ K2) keys (see tab. 4).
The level is selected by pressing the H4 button.
The parameters are changed with the H2 (▲ K1) or
H3 (▼ K2) keys. Press the H4 “set” key for 5 seconds
to confirm the new value.
6.1.7 Programming and control
of the Basic controller
See also fig. 25 on page 20.
Progr. Display
level
screen
Parameters
Min. Max. Factory
value value setting
Description
1
Internal enclosure
temperature
setpoint Ti
20
The setting of the enclosure internal temperature is
preset at the factory to 35 °C and may be altered
within a range of +20 °C to +55 °C. When the setpoint
is reached, the H2 (▲ K1) key is lit continuously.
°1
55
35
Tab. 5: Setting the setpoint
Progr. Display
level
screen
Parameters
Min. Max. Factory
value value setting
Description
0
Ps
–
–
–
–
No function
2
H5
Software version
number
–
–
–
Displays the current version number of the device
software.
3
AH
Alarm – maximum
temperature
AL
+150
50
Maximum temperature alarm (NOT in relation to the
nominal value). HI is displayed alternating with the
internal temperature. The “HI” alarm is displayed
when the internal temperature > HI.
The alarm stops when the internal temperature
< AH –2K.
4
AL
Alarm – minimum
temperature
–50
AH
20
Minimum temperature alarm (NOT in relation to the
nominal value). LO is displayed alternating with the
internal temperature. The “LO” alarm is displayed
when the internal temperature < LO.
The alarm stops when the internal temperature
> AL +2K.
5
r8
Reset of r6 and r7
0
1
0
Reset of r6 and r7. Set this parameter to 1 to reset the
stored maximum and minimum values of r6 and r7 to
the respective current actual value.
6
r7
Querying of the
min. internal
temperature
–50
+150
0
Stores the min. internal enclosure temperature
occurring after > 1 min.
7
r6
Querying of the
max. external
temperature
–50
+150
0
Stores the max. ambient temperature
occurring after > 1 min.
Tab. 6: Setting the system messages, monitoring of the min./max. enclosure internal temperature
6.1.8 Reset r6 and r7
(min./max. internal temperature)
To reset the stored internal temperatures keep the
H4 “set” key pressed for 5 seconds. Navigate to level
r8 with the H2 (▲ K1) or H3 (▼ K2) keys. Press the
14
H4 “set” key and change the parameter from 0 to
1 using the H2 (▲ K1) or the H3 (▼ K2) keys.
Press the H4 “set” key for 5 seconds to confirm
resetting the values.
Rittal air/water heat exchanger assembly instructions
6 Operation
6.1.9 System message contact (K1; floating)
The relay is normally closed. All assigned system
messages lead to the relay dropping out – and
likewise to loss of the control voltage. Terminal strip
X1 provides the connection. For contact data and
occupancy – see the wiring diagram in chapter
“4.6.5 Installing the power supply”, page 11.
K1 fault signal relay
(normally open contact/change-over contact)
– Terminal 3: NC (normally closed)
– Terminal 4: C (connection of the supply voltage to
the fault signal relay)
– Terminal 5: NO (normally open)
The NC and NO definitions refer to the de-energised
state.
6.1.10 Programming overview of Basic controller
Setpoint
K1
= 1 sec.
K1
K2
K1
= 1 sec.
K1
K2
K1
K2
Parameters
= 5 sec.
K1
K2
= 5 sec.
K1
K2
K1
K2
K1
K2
K1
K2
K1
K2
K1
K2
Fig. 20:
Programming overview of Basic controller
Rittal air/water heat exchanger assembly instructions
15
EN
6 Operation
6.2 Control using the e-Comfort controller
EN
For unit types SK 3363.5XX to SK 3375.5XX.
1
4
Fig. 21:
2
3
Display and system analysis
of the e-Comfort controller
Key
1
Programming button, also display of the set
temperature unit (degrees Celsius)
2
Set button
3
Programming button, also display of the set
temperature unit (degrees Fahrenheit)
4
7-segment display
6.2.1 Properties
– Door limit switch function
– Monitoring of all motors (fans)
– Master-slave function with a maximum of ten units.
One device functions as a master unit. Once the
set temperature is reached by one of the connected slave units or in the event of the door limit
switch function, the affected slave unit will report
to the master unit, which will switch all the other
air/water heat exchangers on or off as required.
– Switching hysteresis: adjustable from 2 – 10 K,
preset to 5 K.
– Visualisation of the current enclosure internal
temperature and all error messages in the 7-segment display.
The air/water heat exchanger operates automatically, i.e. after switching on the power supply, the
fan (see page 4, fig. 2) will run continuously and
permanently circulate the internal enclosure air.
The fan and the magnetic valve are controlled by
the e-Comfort controller.
The e-Comfort controller has a 7-segment display
(fig. 21, no. 4). After switching on the power supply,
the current software version initially appears on this
display for approx. 2 seconds. In regular operation,
the display shows both the temperature (in degrees
Celsius or Fahrenheit – users may switch between
the two) and any error messages.
16
The current enclosure internal temperature is usually
displayed permanently. In the event of an error message, this alternates with the temperature display.
The unit is programmed using buttons 1 – 3 (fig. 21).
The relevant parameters also appear in the display.
6.2.2 Launching test mode
The e-Comfort controller is equipped with a test
function, whereby the air/water heat exchanger
commences cooling operation independently of the
set temperature or door limit switch function.
䡲 Simultaneously press buttons 1 and 2 (fig. 21)
for at least 5 seconds.
The air/water heat exchanger starts running.
After approximately 5 minutes or upon reaching
15 °C, test mode will end. The unit switches off and
changes to normal operation.
6.2.3 General programming information
Using buttons 1, 2 and 3 (fig. 21) you can change
the parameters within the preset ranges (min. value,
max. value).
Tables 7 and 8 show the parameters which can be
altered. fig. 25 on page 20 shows which buttons
must be pressed.
Note on switching hysteresis:
With a low hysteresis and short switching
cycles, there is a risk that cooling may
not be adequate or that only partial sections
of the enclosure are cooled.
Note on temperature settings:
With the e-Comfort controller, the temperature is preset at the factory to +35 °C.
In order to save energy, do not set the
temperature lower than that actually
necessary.
In principle, the programming is identical for all
editable parameters.
To enter programming mode:
䡲 Press button 2 (“set”) for approx. 5 seconds.
The controller is now in programming mode.
Rittal air/water heat exchanger assembly instructions
6 Operation
While in programming mode, if you do not press any
buttons for approx. 30 sec., the display will first flash,
then the controller will switch back to normal display
mode. The “Esc” display indicates that any changes
made have not been saved.
䡲 Press the programming buttons ▲ (°C) or ▼ (°F)
to switch back and forth between the editable
parameters (see tables 4 and 5).
䡲 Press button 2 (“set”) to select the displayed
parameter for editing.
The current value of this parameter is displayed.
䡲 Press one of the programming buttons ▲ (°C)
or ▼ (°F).
The “Cod” display will appear. In order to be able to
change a value, you must enter the authorisation
code “22”.
䡲 Keep the programming button ▲ (°C) held down
until “22” appears.
䡲 Press button 2 (“set”) to confirm the code.
You can now alter the parameter within the preset
limits.
䡲 Press one of the programming buttons ▲ (°C)
or ▼ (°F) until the required value appears.
䡲 Press button 2 (“set”) to confirm the change.
You can now alter other parameters in the same way.
There is no need to re-enter the authorisation code
“22”.
䡲 To exit programming mode, press button 2 (“set”)
again for approximately 5 seconds.
“Acc” will appear in the display to indicate that
the changes have been saved. The display then
switches back to regular operation (enclosure internal temperature).
You can also program the e-Comfort controller
using a diagnosis software package (Model No.
SK 3159.100), the supply of which also includes
a connection cable to the PC. The cable connector
on the rear of the e-Comfort controller display serves
as an interface.
Rittal air/water heat exchanger assembly instructions
6.2.4 Eco-mode
All Rittal TopTherm heat exchangers with e-Comfort
controller from firmware 3.2 have the energy-saving
eco-mode, which is activated in the delivered state.
The eco-mode is used to save energy in the heat
exchanger if there is no thermal load, or there is a low
thermal load in the enclosure (e.g. standby operation, no production or weekend). During this process
the heat exchanger fan in the internal circuit is
switched off as appropriate if the actual enclosure
internal temperature drops to 10 K below the setpoint
temperature set. Also to reliably measure the internal temperature during this process, the fan starts
cyclically for 30 sec. every 10 minutes (see fig. 21).
If the internal temperature reaches the range 5 K
below the setpoint set again, the fan switches back
to continuous operation. If required, the eco-mode
can be deactivated via the control display. For this
purpose switch the parameter from 1 to 0 in the
programming level (see tab. 6, page 18). The fan
then runs continuously.
Internal
temperature
Setpoint
–5 K
Setpoint
–10 K
Internal
fan status
ON
OFF
10 min.
10 min.
Time
30 sec.
Fig. 22: Diagram of eco-mode
17
EN
6 Operation
EN
6.2.5 Editable parameters
See also fig. 25 on page 20.
Progr.
level
Display
screen
Parameters
Min.
value
Max.
value
Factory
setting
Description
1
St
Internal enclosure
temperature
setpoint Ti
20
55
35
The setting of the enclosure internal temperature
is preset at the factory to 35 °C and may be
altered within a range of 20 – 55 °C.
2
Mod
Control mode
0
1
0
Control mode setting. The temperature control
is made as factory setting with the magnetic
valve (0). It is, however, possible to change the
temperature control by starting and stopping
the internal fan (1); the magnetic valve then
remains permanently open. You must obtain
the manufacturer's consent before changing to
control mode (1).
3
Ad
Master-slave
identifier
0
19
0
See “6.2.9 Setting the master-slave identifier”,
page 21.
4
CF
Change-over °C/°F
0
1
0
The temperature display can be switched from
°C (0) to °F (1). The corresponding LED displays
the current temperature unit.
5
H1
Setting for switching 2
difference
(hysteresis)
10
5
The air/water heat exchanger is preset in the
factory to a switching hysteresis of 5 K. This
parameter should only be changed in consultation
with us. Please contact us for advice.
6
H2
Differential for
error message A2
15
5
If the internal enclosure temperature exceeds
the set value by more than 5 K, then error
message A2 (enclosure internal temperature
too high) appears on the display terminal.
If necessary, the differential may be altered here
within the range of 3 – 15 K.
26
ECO
Eco-mode operation 0
1
1
Eco-mode OFF: 0 / Eco-mode ON: 1
3
Tab. 7: Editable parameters
18
Rittal air/water heat exchanger assembly instructions
6 Operation
6.2.6 Bus connection
(only when interconnecting several units
with an e-Comfort controller)
When using several air/water heat exchangers,
the serial unit interface can be used to connect up
to ten air/water heat exchangers with the bus cable
(Model No. SK 3124.100).
Note:
The electrical signals at the X2 interface are
of an extra-low voltage (not extra-low safety
voltages in accordance with EN 60 335-1).
When interconnecting, please note the following:
– De-energise the air/water heat exchangers to
be connected.
– Ensure proper electrical insulation.
– Make sure the cables are not laid in parallel to
power lines.
– Make sure that the lines are short.
CMC
1
2
RTT
Master
RTT
Slave
Adr.: 09
Adr.: 11
St. X2
Adr.: 12
X3
X2
X3 Bu.
RTT
Slave
Adr.: 19
X1
X1
X1
X2
RTT
Slave
X3
X2
X1
X3
X2
St. X2
St. X2
X3
St. X2
X2 X2
X2 X2
X2
Bu. St.
Bu. St.
Bu.
3
Fig. 23:
Key
1
2
3
RTT
X1
Connection example: Master-slave operation
Serial interface
Serial interface cable
Master-slave bus cable (Model No. SK 3124.100)
Rittal TopTherm air/water heat exchanger
Supply connection/Door limit switch/Alarms
X2
X2
Adr.: 06
1
X10 L1
L2
N
X2
Adr.: 11
2
PE 1 2 3 4 5 X10 L1 L2 L3 PE 1 2 3 4 5
L2
N
Master-slave connection Sub-D, 9-pole
Serial interface Sub-D, 9-pole
Sub-D connector, 9-pole
Sub-D jack, 9-pole
Address
X2
Adr.: 12
2
X10 L1
X2
X3
St.
Bu.
Adr.
X2
Adr.: 13
2
PE 1 2 3 4 5
X2
Adr.: 14
2
X10 L1 L2 L3 PE 1 2 3 4 5
X10 L1 L2 L3 PE 1 2 3 4 5
Adr.: 15
2
X10 L1 L2 L3 PE 1 2 3 4 5
X2
L1
L2
N
PE 1 2 3 4 5
X10
Adr.: 16
1 2
3
Fig. 24:
Key
1
2
3
4
4
3
4
4
5 6
3
2
Connection example: Door limit switch and master-slave operation
Master air/water heat exchanger
Slave air/water heat exchanger
2-door enclosure with two door limit switches
Enclosure with door limit switch
Rittal air/water heat exchanger assembly instructions
19
EN
6 Operation
6.2.7 Programming overview of e-Comfort controller
= 5 sec.
= 5 sec.
EN
Fig. 25:
20
Programming overview of e-Comfort controller
Rittal air/water heat exchanger assembly instructions
6 Operation
6.2.8 Defining system messages for evaluation
System messages are shown on the display screen
of the e-Comfort controller via the displays A1 to A20
and E0.
A more detailed explanation of the system messages
may be found in section “6.2.10 Evaluating system
messages”, page 22. See also fig. 25 on page 20.
Progr.
level
Display
screen
Min.
value
Max.
value
Factory
setting
Type or location of fault
7
A01
0
2
0
Enclosure door open
8
A02
0
2
0
Internal temperature of enclosure too high
9
A08
0
2
1
Condensate warning
10
A10
0
2
1
Fan blocked or defective
11
A16
0
2
1
Internal temperature sensor
12
A18
0
2
1
EPROM
13
A19
0
2
0
LAN/Master-Slave
14
A20
0
2
0
Voltage drop
Tab. 8: System messages which may be evaluated via relays
The system messages A01 – A20 may additionally
be evaluated via two floating system message
relays. In this way, one of the two system message
relays may be allocated to each system message.
System message relays with normally open contact,
see wiring diagrams at section “4.6.5 Installing the
power supply”, page 11:
– Terminal 3: NO (normally open, relay 2)
– Terminal 4: Connection of the supply voltage to the
system message relay
– Terminal 5: NO (normally open, relay 1)
The definition NO refers to the de-energised state.
As soon as power is applied to the air/water heat
exchanger, both system message relays (relay 1
and 2) energise.
This is the normal operating state of the air/water
heat exchanger.
As soon as a system message occurs or the power
supply is interrupted, the corresponding relay will
drop out and open the contact.
6.2.9 Setting the master-slave identifier
When several air/water heat exchangers are connected together (maximum 10), one of the air/water
heat exchangers must be defined as the “master”
and the others as “slaves”. For this purpose, assign
a corresponding identifier (address) to each air/
water heat exchanger which will enable the air/water
heat exchanger to be identified in the network.
If one of the slave units reaches the set temperature
or if the door limit switch function is activated, the
affected slave unit will report to the master unit,
which then deactivates all the other air/water heat
exchangers.
Notes:
– Only one unit may be configured as
master, and its identifier must match
the number of connected slave units.
– The slave units must have different
identifiers.
– The identifiers must be numbered in
ascending order without any gaps.
Program system messages with the value
0: System message is not sent to the system
message relays, but merely appears in the
display
1: System message is evaluated by relay 1
2: System message is evaluated by relay 2
Rittal air/water heat exchanger assembly instructions
21
EN
6 Operation
EN
On the master air/water heat exchanger
(00 = factory setting), set the number of slave units
present in the network:
01: Master with 1 slave air/water heat exchanger
02: Master with 2 slave air/water heat exchangers
03: Master with 3 slave air/water heat exchangers
04: Master with 4 slave air/water heat exchangers
05: Master with 5 slave air/water heat exchangers
06: Master with 6 slave air/water heat exchangers
07: Master with 7 slave air/water heat exchangers
08: Master with 8 slave air/water heat exchangers
09: Master with 9 slave air/water heat exchangers
Master
02
Fig. 26:
Slave
11
On the slave air/water heat exchanger
(00 = factory setting), set its own address:
11: Slave air/water heat exchanger No. 1
12: Slave air/water heat exchanger No. 2
13: Slave air/water heat exchanger No. 3
14: Slave air/water heat exchanger No. 4
15: Slave air/water heat exchanger No. 5
16: Slave air/water heat exchanger No. 6
17: Slave air/water heat exchanger No. 7
18: Slave air/water heat exchanger No. 8
19: Slave air/water heat exchanger No. 9
Slave
12
Master-slave connection (example)
For details of how to set the identifier,
see “6.2.5 Editable parameters”, page 18 or
“6.2.7 Programming overview of e-Comfort
controller”, page 20, parameter “Ad”.
6.2.10 Evaluating system messages
In the e-Comfort controller, system messages are
indicated by a number in the display.
Display
screen
System message
Possible cause
Measures to rectify the fault
A01
Enclosure door open
Door open or door limit switch
incorrectly positioned
Close door, position door limit switch
correctly, check connection if necessary
A02
Internal temperature
of enclosure too high
Cooling capacity inadequate/
unit undersized
Check cooling capacity
A08
Condensate warning
Condensate discharge kinked
or blocked
Check condensate drainage;
correct any kinks or blockages in the hose
A10
Fan
Blocked or defective
Clear the blockage; replace if necessary
A16
Internal temperature
sensor
Open or short-circuit
Replace
A18
EPROM error
New board installed incorrectly
Software update needed (only following
board installation with more recent software): Enter the programming level with
Code 22; press button 1 and confirm with
“set” until “Acc” appears. Next, disconnect
the unit from the mains and reconnect.
A19
LAN/Master-Slave
Master and slave not connected
Check setting and cable
A20
Voltage drop
Error display not shown
Event is stored in the log file
E0
Display message
Connection problem between the
display and the controller board
Reset: Switch power supply off, then switch
on again after approx. 2 sec.
Cable defective; connection loose
Replace the boards
Tab. 9: Troubleshooting with the e-Comfort controller
22
Rittal air/water heat exchanger assembly instructions
7 Inspection and maintenance
7
Inspection and maintenance
EN
Risk of electric shock!
The unit is live. Switch off the power
supply before opening, and take suitable
precautions against it being accidentally
switched on again.
7.1 General
The air/water heat exchanger is largely maintenance
free. The water circuit is checked at the factory for
leaks and subjected to a function trial run.
The installed maintenance-free fan is mounted on ball
bearings, protected against moisture and dust, and
fitted with a temperature monitor. The life expectancy
is at least 30,000 operating hours. If dirt is present in
the cooling water, a filter must be fitted.
Maintenance interval: 2,000 operating hours.
Fig. 29:
Remove the cover with fan
Fig. 30:
Disconnect the connector from the display
Caution!
Risk of fire!
Never use flammable liquids for cleaning.
Sequence of maintenance measures:
– Check the level of dirt.
– Activate test mode; cooling function OK?
– Check the noise generation of the fan.
8
Emptying, storage and disposal
Caution! Risk of damage!
The air/water heat exchanger
must not be subjected to temperatures
above +70 °C during storage.
Fig. 27:
Disconnect the mains plug (X1)
During storage, the air/water heat exchanger must
stand upright.
Disposal can be performed at the Rittal plant.
Please contact us for advice.
Emptying (for units with Basic controller only):
During storage and transportation below freezing
point, the air/water heat exchanger should be
drained completely in the water supply direction
using compressed air. This requires that the magnetic valve is opened.
For the e-Comfort controller, this is achieved by
simultaneously pressing the H2 (°C key) and H4
(/set key) keys for 5 seconds. The magnetic valve
is then opened for approximately 5 minutes.
Fig. 28:
Remove the fastening screws for the cover with fan
Rittal air/water heat exchanger assembly instructions
23
9 Technical specifications
9
Technical specifications
– Observe the mains connection data (voltage
and frequency) as per the rating plate.
– Observe the pre-fuse as per the specifications
on the rating plate.
EN
Fig. 31:
Rating plate (Technical specifications)
Model No. SK
Basic controller, RAL 7035
3363.100
3363.104
3364.100
3364.104
e-Comfort controller, RAL 7035
3363.500
3363.504
3364.500
3364.504
1000 W
950 W
Rated voltage
Dimensions
V, Hz 230, 1~, 50/60
W x H x D mm 280 x 550 x 120
Air throughput of fans (unimpeded air flow)
300 m3/h
Rated current
0.18 A/0.18 A
Pre-fuse T
4.0 A
Power consumption Pel to DIN 3168
.
Useful cooling output Qk
to DIN 3168
37 W/38 W
L35 W10 400 l/h 500 W
Admissible pressure
1 to 10 bar
Water inlet temperature
+1 °C to +30 °C
Temperature setting range
+20 °C to +55 °C
Operating temperature range
+1 °C to +70 °C
Noise level
42 dB (A)
Electrical connection
Plug-in terminal strip
Water connection
1/ ˝
2
Protection category to IEC 60 529
IP 55
Weight
8 kg
24
44 dB (A)
hose nozzle or G 3/8˝ external thread
9 kg
Rittal air/water heat exchanger assembly instructions
9 Technical specifications
Model No.
Basic controller, RAL 7035
e-Comfort controller, RAL 7035
Rated voltage
Dimensions
3373.100
3373.110
3373.140
3373.104
3373.114
3373.144
3373.500
3373.510
3373.540
3373.504
3373.514
3373.544
EN
V, Hz 230, 1~, 50/60 115, 1~, 50/60 400, 2~, 50/60 230, 1~, 50/60 115, 1~, 50/60 400, 2~, 50/60
W x H x D mm 400 x 950 x 145
Air throughput of fans (unimpeded air flow)
880 m3/h
Rated current
0.49 A/0.61 A
Pre-fuse T
4.0 A
Power consumption Pel to DIN 3168
.
Useful cooling output Qk
to DIN 3168
110 W/140 W
0.98 A/1.25 A
0.28 A/0.35 A
0.49 A/0.61 A
0.98 A/1.25 A
20 kg
23 kg
0.28 A/0.35 A
L35 W10 400 l/h 2000 W
Admissible pressure
1 to 10 bar
Water inlet temperature
+1 °C to +30 °C
Temperature setting range
+20 °C to +55 °C
Operating temperature range
+1 °C to +70 °C
Noise level
50 dB(A)
Electrical connection
Plug-in terminal strip
Water connection
1/ ˝
2
Protection category to IEC 60 529
IP 55
Weight
20 kg
hose nozzle or G 3/8˝ external thread
23 kg
Model No. SK
Basic controller, RAL 7035
3374.100
3374.110
3374.140
3374.104
3374.114
3374.144
e-Comfort controller, RAL 7035
3374.500
3374.510
3374.540
3374.504
3374.514
3374.544
Rated voltage
Dimensions
V, Hz 230, 1~, 50/60 115, 1~, 50/60 400, 2~, 50/60 230, 1~, 50/60 115, 1~, 50/60 400, 2~, 50/60
W x H x D mm 400 x 950 x 145
Air throughput of fans (unimpeded air flow)
1180 m3/h
Rated current
0.76 A/1.01 A
Pre-fuse T
4.0 A
Power consumption Pel to DIN 3168
.
Useful cooling output Qk
to DIN 3168
169 W/232 W
1.55 A/2.05 A
0.44 A/0.58 A
L35 W10 400 l/h 3000 W
0.76 A/1.01 A
1.55 A/2.05 A
0.44 A/0.58 A
2800 W
Admissible pressure
1 to 10 bar
Water inlet temperature
+1 °C to +30 °C
Temperature setting range
+20 °C to +55 °C
Operating temperature range
+1 °C to +70 °C
Noise level
60 dB(A)
Electrical connection
Plug-in terminal strip
Water connection
1/ ˝
2
Protection category to IEC 60 529
IP 55
Weight
23 kg
hose nozzle or G 3/8˝ external thread
Rittal air/water heat exchanger assembly instructions
26 kg
23 kg
26 kg
25
9 Technical specifications
EN
Model No. SK
Basic controller, RAL 7035
e-Comfort controller, RAL 7035
Rated voltage
3375.100
3375.110
3375.140
3375.104
3375.114
3375.144
3375.500
3375.510
3375.540
3375.504
3375.514
3375.544
V, Hz 230, 1~, 50/60 115, 1~, 50/60 400, 2~, 50/60 230, 1~, 50/60 115, 1~, 50/60 400, 2~, 50/60
Dimensions
W x H x D mm 450 x 1400 x 220
Air throughput of fans (unimpeded air flow)
1450 m3/h
Rated current
0.78 A/1.01 A
Pre-fuse T
4.0
Power consumption Pel to DIN 3168
.
Useful cooling output Qk
to DIN 3168
178 W/232 W
1.58 A/2.1 A
0.45 A/0.59 A
L35 W10 400 l/h 5000 W
0.78 A/101 A
1.58 A/2.1 A
0.45 A/0.59 A
4500 W
Admissible pressure
1 to 10 bar
1 to 10 bar
Water inlet temperature
+1 °C to +30 °C
+1 °C to +30 °C
Temperature setting range
+20 °C to +55 °C
+20 °C to +55 °C
Operating temperature range
+1 °C to +70 °C
+1 °C to +70 °C
Noise level
62 dB(A)
Electrical connection
Plug-in terminal strip
Water connection
1/ ˝
2
Protection category to IEC 60 529
IP 55
Weight
39 kg
hose nozzle or G 3/8˝ external thread
42 kg
39 kg
42 kg
.
26
Rittal air/water heat exchanger assembly instructions
10 List of spare parts
10 List of spare parts
EN
SK 3363.XXX, SK 3364.XXX
SK 3373.XXX, SK 3374.XXX, SK 3375.XXX
75
75
71
10
10
71
40
55
55
40
.
91
91
33
32
73
33
32
15
73
15
Fig. 32:
Key
10
15
32
33
40
55
71
73
75
91
Spare parts for SK 3363.XXX, SK 3364.XXX
Fan, complete
Dispatch bag
Magnetic valve, complete
Non-return valve (only for SK 33XX.5XX)
Controller board
Display
Temperature probe
Float-actuated switch (only for SK 33XX.5XX)
Cover
Heat exchanger
Rittal air/water heat exchanger assembly instructions
Fig. 33:
Spare parts for SK 3373.XXX, SK 3374.XXX,
SK 3375.XXX
Note:
As well as the spare part number,
when ordering spare parts the following
information must be provided:
– Unit model
– Fabrication number
– Date of manufacture
This information may be found
on the rating plate.
27
11 Further technical information
11 Further technical information
EN
11.1 Hydrological data
To avoid system damage and to ensure safe
operation, Rittal GmbH & Co. KG recommends
the use of system water or an additive whose
composition does not differ from that presented
in the following summary:
Hydrological data
Unit
–
pH value
Model No. SK1)
Model No. SK
3363.100/.500/
3364.100/.500/
3373.100/.110/.140/.500/.510/.540
3374.100/.110/.140/.500/.510/.540
3375.100/.110/.140/.500/.510/.540
3363.104/.504
3364.104/.504
3373.104/.114/.144/.504/.514/.544
3374.104/.114/.144/.504/.514/.544
3375.104/.114/.144/.504/.514/.544
7 – 8.5
6–9
Calcium hardness
°dH
3<8
1 – 12
Free carbonic acid
mg/dm3
8 – 15
1 – 100
Corresponding carbonic acid
mg/dm3
8 – 15
free
Aggressive carbonic acid
mg/dm3
0
0 – 400
Sulphides
mg/dm3
free
free
Oxygen
mg/dm3
< 10
< 10
Chloride ions
mg/dm3
< 50
< 200
Sulphate ions
mg/dm3
< 250
< 500
Nitrates and nitrites
mg/dm3
< 10
< 100
COD
mg/dm3
<7
< 40
Ammonia
mg/dm3
<5
< 20
Iron
mg/dm3
< 0.2
free
Manganese
mg/dm3
< 0.2
free
Conductivity
μS/cm
< 2200
< 4000
Evaporation residue
mg/dm3
< 500
< 2000
Potassium permanganate
mg/dm3
< 25
< 40
mg/dm3
<3
mg/dm3
> 3 < 15; partial current purification recommended
mg/dm3
> 15; continuous purification recommended
Suspended matter
1)
The complete absence of corrosion under experimental conditions suggests that solutions with a significantly higher salt content
and greater corrosion potential (such as seawater) can still be tolerated.
Tab. 10: Hydrological data
.
28
Rittal air/water heat exchanger assembly instructions
11 Further technical information
11.2
Characteristic curves
EN
11.2.1 Water resistance
900
1200
750
1000
600
800
p 450
p
600
300
400
150
200
0
0
100
200
300
400
0
500
0
100
200
V
Δp:
.
Water resistance [mbar]
.
V: Volumetric flow [l/h]
Fig. 34:
Fig. 37:
700
750
600
600
500
p 450
p 400
300
300
150
200
100
200
300
400
100
500
0
100
200
300
400
500
V
V
Δp:
Water resistance [mbar]
.
.
V: Volumetric flow [l/h]
Fig. 35:
500
Water resistance SK 3374.XXX
900
0
400
Δp:
.
Water resistance [mbar]
.
V: Volumetric flow [l/h]
Water resistance SK 3363.XXX
0
300
V
Δp:
Water resistance [mbar]
.
.
V: Volumetric flow [l/h]
Fig. 38:
Water resistance SK 3364.XXX
Water resistance SK 3375.XXX
1200
1000
800
p 600
400
200
0
0
100
200
300
400
500
V
Δp:
Water resistance [mbar]
.
.
V: Volumetric flow [l/h]
Fig. 36:
Water resistance SK 3373.XXX
Rittal air/water heat exchanger assembly instructions
29
12 Appendix 1: Cut-out and hole sizes
12 Appendix 1: Cut-out and hole sizes
12.1 Dimensions for external and internal mounting
Mounting cut-out for
external mounting A
Mounting cut-out for
internal mounting E
20
280
15
520
550
49
91
506
520
256
280
3
E
25
A
1
250
20
1
250
550
2
100
25
EN
A
E
120
120
1
2
3
Fig. 39:
30
Ø 6.5 (4x for internal
and external mounting)
Water connections: 1/2˝ hose nozzle
or G 3/8˝ external thread
Condensate discharge 1/2˝
SK 3363.XXX/SK 3364.XXX
Rittal air/water heat exchanger assembly instructions
12 Appendix 1: Cut-out and hole sizes
EN
Mounting cut-out for
internal mounting E
400
350
250
1
91
25
350
950
920
950
920
255
40
1
49
15
20.5
400
250
32.5
15
Mounting cut-out for
external mounting A
250
350
250
1
1
E
A
E
264.5
A
145
330.5
325
145
3
11
1
35
Min. 340
Max. 375
Fig. 40:
35
2
2
100
3
Ø 6.5 (4x for internal
and external mounting)
Water connections: 1/2˝ hose
nozzle or G 3/8˝ external thread
Condensate discharge 1/2˝
SK 3373.XXX/SK 3374.XXX
Rittal air/water heat exchanger assembly instructions
31
12 Appendix 1: Cut-out and hole sizes
EN
Mounting cut-out for
external mounting A
Mounting cut-out for
internal mounting E
450
350
15
15
33.5
20.5
450
350
91
1
470
40
49
1
1365
1400
846.5
450
1365
1400
420
20
20
420
50
1
1
350
A
E
A
E
455
455
350
220
455
220
11
Min. 411
Max. 446
3
50
50
1
2
100
2
Fig. 41:
32
3
Ø 6.5 (4x for internal
and external mounting)
Water connections:
1/ ˝ hose nozzle or
2
G 3/8˝ external thread
Condensate discharge 1/2˝
SK 3375.XXX
Rittal air/water heat exchanger assembly instructions
13 Appendix 2: Application example
13 Appendix 2: Application example
Parallel connection of 4 air/water heat exchangers
EN
Example: Parallel connection of 4 air/water heat
exchangers with cold water supply via a recooling
system.
Overflow valves and bypass control should be
integrated into the recooling system and the
customer’s own pipeline system respectively.
2
2
1
4
5
2
2
4
4
4
3
6
1
2
3
4
5
6
Fig. 42:
Recooling system
Air/water heat exchanger
Overflow valve SK 3301.900/.910/.920
(bypass function with closed magnetic valve of the air/water heat exchanger)
Flow regulator valve SK 3301.930/.940
(to regulate the volume flow in air/water heat exchangers)
Non-return valve (optional)
Magnetic valve (optional)
Parallel connection of 4 air/water heat exchangers
Rittal air/water heat exchanger assembly instructions
33
䡲
䡲
䡲
䡲
3rd edition11.2012 / ID no. 315 410
䡲
Enclosures
Power Distribution
Climate Control
IT Infrastructure
Software & Services
RITTAL GmbH & Co. KG
Postfach 1662 · D-35726 Herborn
Phone +49(0)2772 505-0 · Fax +49(0)2772 505-2319
E-mail: [email protected] · www.rittal.com
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