This document provides information on air/air and air/water heat exchangers for industrial enclosures. Air/air heat exchangers use two separated air streams and a counterflow design to cool the interior air without allowing dust in. Air/water heat exchangers cool the interior via an external cooling water circuit, allowing high heat loads to be dissipated even in extreme conditions. Technical specifications and installation benefits are provided for Rittal's roof-mounted and wall-mounted air/water heat exchanger models.

1. 104
1
3
Extreme industrial
environments
Air/water heat exchangers
(roof-mounted,
wall-mounted)
Recooling system
1
2
3

2. 105
Heatexchangers
Heat exchangers
1
1
2
2
Air/water heat exchangers
Benefits, technical details 106
Wall mounting, useful cooling output 600/1000 W 108
Wall mounting, useful cooling output 1250/1540 W 110
Wall mounting, useful cooling output 2250/3000/5000 W 112
Roof mounting, useful cooling output 1900/2500/4000 W 114
As a side panel for 600 mm deep TS 8 enclosures,
useful cooling output 700 W 116
One concept, two systems with very different operating methods.
Air/water heat exchangers cool the enclosure internal air via
integration into an existing cooling water circuit or connection to a
recooling system. In this way, extremely high heat loads may be
dissipated.
Practical example of an
air/air heat exchanger
In the paper and wood-processing indus-
tries, for example, particular requirements
are placed on climate control components.
They ensure good ventilation inside the
enclosure, and heat dissipation out of the
enclosure. At the same time, they also pre-
vent the ingress of super-fine dusts.
Air/air heat exchangers are ideal for this
purpose, since they effectively dissipate
the heat from the enclosure with their two
hermetically separate air circuits based on
the reverse current or counter-current prin-
ciple, and prevent the ingress of ambient
air into the enclosure.
The requirement for the use of air/air heat
exchangers is that the ambient tempera-
ture must be below the enclosure internal
temperature.
Standard control units such as thermostat,
hygrostat and speed control for noise mini-
misation, as well as special DC variants,
extend the range of applications, e.g. to
the railway sector.
Practical example of an
air/water heat exchanger
In all areas with extreme ambient condi-
tions, enclosure and climate control com-
ponents are subject to special require-
ments. This applies, for example, to metal
foundries, engine factories and the chemi-
cals and metal-working industries.
In such situations, low-maintenance air/
water heat exchangers are used as effi-
cient all-rounders. Either fed from existing
cooling water networks or from separate
recooling systems, these products contrib-
ute to an ideal climate inside the enclo-
sure. The cooling water absorbs the heat
inside the heat exchanger and conveys it
to the corresponding cooling system. In
this way, even small rooms are not subject
to additional waste heat from the enclo-
sure, and the electronics inside the enclo-
sure are effectively protected.
Air/air heat exchangers utilise the cooler ambient air to cool the
air in the enclosure interior. Based on the counterflow principle,
the completely separate airflows are routed through the heat
exchanger module via high-performance fans. This prevents the
ingress of dust from the environment into the enclosure interior.
Air/air heat exchangers
Benefits, technical details 118
Wall mounting, specific thermal output 17.5 – 60 W/K 120
Wall mounting, specific thermal output 90 W/K 122
Wall mounting, specific thermal output 14.6 – 37 W/K 124
Wall mounting, specific thermal output 42 – 69 W/K 126
Roof mounting, specific thermal output 66 W/K 128
2
2
Wood-processing industry
Air/air heat exchanger (wall-mounted)
1
2

3. 106
Air/water heat exchanger
Benefits, technical details
Rittal system climate control
2
3
3
1
4
The air of the enclosure interior may also be cooled to below the
level of the external temperature, if required, by using cooling
water from a central recooling system. The ingress of dust from
outside into the cooled enclosure is prevented. The waste heat
from the enclosure does not raise the temperature of the ambient
air, provided the heat exchanger and cold water supply system are
spatially separated from one another.
Performance benefits of air/water heat exchangers
Useful cooling output from
600 to 5000 watts
in three mounting variants:
● Wall mounting
● Roof mounting
● Integrated in the TS 8 side
panel. This installation form
uses the space behind the
side panel of the TS 8.
Central cooling as cold water
supplier
By integrating the air/water
heat exchangers into an exist-
ing cooling water circuit or con-
necting to a central recooling
system, the necessary heat
loss can be dissipated with
exceptionally low energy costs.
Also suitable for use in extreme conditions
Ideal at any installation site
If direct dissipation of heat loss
to the ambient air is not desired
or ineffective due to the con-
fined space, the air/water heat
exchanger may offer an ideal
solution. Particularly by sepa-
rating the exchanger from the
recooling system, highly indi-
vidual and effective cooling
solutions for individual enclo-
sures or bayed enclosure
suites may be achieved.
Effective in extreme
conditions
Air/water heat exchangers may
even be used in particularly
extreme ambient temperatures
from +1° to +70° C. Even
extreme levels of contamina-
tion in the ambient air, e.g. with
dust and oil, do not affect
functioning. High heat losses
are dissipated in the most con-
fined spaces, without emitting
them directly to the ambient
air. A high operating ratio is
achieved, thanks to the large
surface area of the heat
exchanger unit.
Also available in stainless
steel
Roof-mounted and wall-
mounted air/water heat
exchangers are available with
all water-carrying parts made
from stainless steel 1.4571
(V4A) for use in extreme con-
ditions.
Example: Parallel connection of
air/water heat exchangers with
cold water supply via a recool-
ing system. Overflow valves
and bypass control should be
integrated into the recooling
system and the customer’s own
pipeline system respectively.
Recooling system
Air/water heat exchanger,
roof-mounted
Air/water heat exchanger,
wall-mounted
Additional cooling water
circuit for machine cooling
1
2
3
4

4. 107Rittal system climate control
Air/waterheatexchanger
Installation and service benefits
Benefits:
● Useful cooling output
from 600 to 5000 watts
● Suitable for use even
under extreme conditions
and ambient tempera-
tures of up to +70°C
● Also available with all
water-carrying parts
made from V4A
● System for TS 8 inte-
grated into the side panel
Important
● Air/water heat exchang-
ers should always be
used in conjunction with
recooling systems or a
cooling water cirucuit
For calculation formulae
and water quality require-
ments,
please see page 188
or refer to the Internet at
www.rittal.de
Compact and lightweight
Air/water heat exchangers
have a low weight and a com-
paratively low volume in rela-
tion to the heat loss to be dissi-
pated. As a result, they are
easily mounted on vertical
enclosure surfaces or on the
roof.
Air/water heat exchanger
integrated into the side panel
This side panel combines
effective heat dissipation with
minimum space requirements.
It may be used in all 600 mm
deep, 1800 mm/2000 mm high
TS 8 enclosures.
Virtually maintenance-free
Because the ingress of ambi-
ent air into the heat exchanger
is prevented, dirt is unable to
penetrate. Control of the air
and water circuit is electroni-
cally monitored.
Control and safety included
High protection category
Thanks to the sealed design, a
protection category of IP 55 to
EN 60 529/10.91 is achieved.
Condensate management
Any condensate arising is dis-
charged via the 1/2˝ tube con-
nector and a discharge hose,
which should be laid with a
gradient ensuring that there are
no kinks. In order to avoid
increased condensation, the
cooling water temperature
should be adapted to match
the required cooling output.
Any condensate occurring may
be disposed of using an exter-
nal electronic condensate
evaporator.
Safety instructions
● When installing the device,
the condensate discharge
must be routed out of the
enclosure!
● In order to avoid frost dam-
age, the minimum permissi-
ble water temperature of
+1°C must not be undercut
at any point in the water
cycle!
● It is vital that the manufactur-
ers’ consent is obtained
before adding anti-freeze!
● During storage and transpor-
tation below freezing point,
the water cycle should be
drained completely using
compressed air!
● Only set the thermostat as
low as is strictly necessary,
since undercutting the dew
point with a falling water inlet
temperature will result in
condensation!
● It is very important that the
enclosure is sealed on all
sides (IP 54), particularly the
cable entry (condensation)!
Roof-mounted heat
exchanger control/monitoring
The enclosure internal temper-
ature is monitored by means of
a thermostatically or electroni-
cally controlled magnetic valve.
It regulates the throughput of
cooling water. If the enclosure
interior temperature rises
above the set level, the float-
ing change-over contact raises
the alarm.
Leak monitoring
of roof-mounted units
In order to ensure that the
enclosure interior is not at risk
from cooling water, the sensor
reports a leak in the event of
water in the corrosion-resistant
base tray.

5. 108 Rittal system climate control
420
200
500
150
Ø 7
80
500
200
18
75
100
2
1
298
240
475
520
Ø 7
298
520
50
135
106
21
420
500
17050
3030
133
150
150
160
200
130
145
160
34Ø 7
4 x
520
298
272
240
475
23012012733
208
Ø 7
Technical specifications:
● All water-carrying parts made from
copper.
● External or internal mounting.
● Small design for optimum space utili-
sation.
● Floating contact in case of overtempera-
ture.
● Ideal for use in extreme ambient condi-
tions.
Supply includes:
Fully wired ready for connection, including
drilling template, sealing mat and assem-
bly parts.
Model No. SK 3214.100 3217.100
Rated operating voltage V, Hz 230, 50/60
Dimensions in mm
W
H
D
200
500
100
298
520
135
Useful cooling output
L 35 W 10, 200 l/h
L 35 W 10, 400 l/h
600 W
650 W
1000 W
1100 W
Rated current max. 0.17 A/0.18 A 0.6 A/0.55 A
Pre-fuse T 2.0 A 4.0 A
Cooling medium Water (see specifications on page 188)
Water inlet temperature > +1°C to +30°C
Permissible operating pressure p. max. 1 to 10 bar
Temperature range +1°C to +70°C
Protection category to EN 60 529/10.91 IP 55*
Duty cycle 100%
Type of connection Terminal strip
Weight 7 kg 9.5 kg
Colour RAL 7032
Air throughput of fans 120 m3/h 240 m3/h
Temperature control Thermostat-controlled magnetic valve
Temperature monitoring
Internal thermostat, with changeover contact, switching load 16 A,
setting range +20°C to +60°C (factory setting +35°C)
Special voltages available on request. We reserve the right to make technical modifications. * IP 65 available on request.
Accessories Packs of Page
Temperature indicator 1 3114.100 174
Door-operated switch 1 4127.000 176
Mounting cutout, external mounting
= Condensate discharge 1/2˝
= Cooling water connection 1/2˝
1
2
= Condensate discharge 1/2˝
= Cooling water connection 1/2˝
1
2
SK 3214.100
Mounting holes for internal mounting
SK 3217.100
Mounting holes for internal mounting
Mounting cutout, external mounting

6. Air/water heat exchanger
Wall mounting, useful cooling output 600/1000 W
109Rittal system climate control
Air/waterheatexchanger
Small design, ideal for the use
with stand-alone enclosures in
conjunction with Mini recooling
systems.
Approvals,
see page 20.
Performance diagrams
(DIN 3168) (50/60 Hz)
Model No. SK
Water resistance curves
Model No. SK
3217.100
TW
Ti
5
250
10 15 20 25 30
500
750
1000
1250
1500
1750
QK
.
45°C
35°C
25°C
VW = 400 l/h
VW = 200 l/h
VW = 100 l/h
.
.
.
3217.100
∆P
V
.300 400 500
300
200
100
400
3214.100
∆P
V
.
300 400 500
300
200
100
400
3214.100
45°C
35°C
25°C
.
.
1200
1100
1000
900
800
700
600
500
400
300
200
100
TW
Ti5 10 15 20 25 30 35
QK
.
VW = 400 l/h
VW = 200 l/h
.
.
Tw = Water inlet temperature (°C)
QK = Continuous useful cooling output (W)
Ti = Enclosure internal temperature (°C)
.
Functional diagram
V = Volumetric flow (l/h)
∆P = Water resistance (mbar)
.
Also required:
Cooling water system such as
Rittal recooling systems,
see from page 76 onwards.
ENVIRONMENTALLY FRIENDLY
C OO L I N G T E C H N O LO GY

7. 110 Rittal system climate control
175
170 15
475
25024
126
96
19920
950
164
140
Ø 7 (6 x)
Ø
7
(4
x)
11920
200
140
100
18
75
21
80
950
200
300
133
85
470
200
320
35
75
750
825
25
40
380
Ø 8
825
765
350
380
Ø 8
105
45
85
825
380
2
1
Technical specifications:
● All water-carrying parts made from
copper.
● External or internal mounting.
● Slimline design for optimum space utili-
sation.
● Floating contact in case of overtempera-
ture.
● Ideal for use in extreme ambient condi-
tions.
Supply includes:
Fully wired ready for connection with
terminal strip or connection cable (3 m),
including drilling template, sealing mat
and assembly parts.
Model No. SK 3215.100 3247.000
Rated operating voltage V, Hz 230, 50/60
Dimensions in mm
W
H
D
200
950
100
380
825
105
Useful cooling output
L 35 W 10, 200 l/h
L 35 W 10, 400 l/h
1250 W
1300 W
1540 W
1700 W
Rated current max. 0.38 A/0.4 A 0.43 A/0.5 A
Pre-fuse T 4.0 A
Cooling medium Water (see specifications on page 188)
Water inlet temperature > +1°C to +30°C
Permissible operating pressure p. max. 1 to 10 bar
Temperature range +1°C to +70°C
Protection category to EN 60 529/10.91 IP 55*
Duty cycle 100%
Type of connection Terminal strip Connection cable 3 m
Weight 13 kg 17 kg
Colour RAL 7032
Air throughput of fans 200 m3/h 240 m3/h
Temperature control Thermostat-controlled magnetic valve
Temperature monitoring
Internal thermostat, with changeover contact, switching load 16 A,
setting range +20°C to +60°C (factory setting +35°C)
Special voltages available on request. We reserve the right to make technical modifications. * IP 65 available on request.
Accessories Packs of Page
Temperature indicator 1 3114.100 174
Door-operated switch 1 4127.000 176
Mounting cutout, external mounting
SK 3215.100
Mounting holes for internal mounting
SK 3247.000
Mounting holes for internal mounting
Mounting cutout, external mounting
= Condensate discharge 1/2˝
= Cooling water connection 1/2˝
1
2
= Condensate discharge 1/2˝
= Cooling water connection 1/2˝
1
2

8. Air/water heat exchanger
Wall mounting, useful cooling output 1250/1540 W
111Rittal system climate control
Air/waterheatexchanger
The slimline, compact design
provides space-saving climate
control, even in confined
spaces and at high ambient
temperatures.
Approvals,
see page 20.
Performance diagrams
(DIN 3168) (50/60 Hz)
Model No. SK
Water resistance curves
Model No. SK
3247.000
2250
2000
1750
1500
1250
1000
750
TW
Ti5 10 15 20 25 30
QK
.
VW = 400 l/h
VW = 200 l/h
VW = 100 l/h
.
.
.
35°C
45°C
25
°C
3247.000
∆P
V
.400 500 600
300
200
100
400
3215.100
∆P
V
.
200 300 400
300
200
100
400
3215.100
2400
2200
2000
1800
1600
1400
1200
1000
800
600
400
200
TW
Ti
5 10 15 20 25 30 35
QK
.
VW = 400 l/h
VW = 200 l/h
.
.
45°C
35°C
25°C
Tw = Water inlet temperature (°C)
QK = Continuous useful cooling output (W)
Ti = Enclosure internal temperature (°C)
.
Functional diagram
V = Volumetric flow (l/h)
∆P = Water resistance (mbar)
.
Also required:
Cooling water system such as
Rittal recooling systems,
see from page 76 onwards.
ENVIRONMENTALLY FRIENDLY
C OO L I N G T E C H N O LO GY

9. 112 Rittal system climate control
Technical specifications:
● SK 3218.104: All water-carrying parts
made from stainless steel 1.4571 (V4A).
SK 3218.100 and SK 3216.100: All
water-carrying parts made from copper.
● External or internal mounting.
SK 3216.100: Suitable for external
mounting only.
● Compact design for optimum space utili-
sation.
● Floating contact in case of overtempera-
ture.
● Ideal for use in extreme ambient condi-
tions.
Supply includes:
Fully wired ready for connection with
terminal strip, including drilling template,
sealing mat and assembly parts.
Also required:
Cooling water system such as
Rittal recooling systems,
see from page 76 onwards.
Model No. SK 3218.104* 3218.100 3216.100
Rated operating voltage V,l Hz 230, 50/60
Dimensions in mm
W
H
D
400
950
200
450
1400
250
Useful cooling output
L 35 W 10, 200 l/h
L 35 W 10, 400 l/h
2250 W
2650 W
3000 W
3500 W 5000 W
Rated current max. 0.42 A/0.48 A 1.0 A/1.1 A
Pre-fuse T 4.0 A
Cooling medium Water (see specifications on page 188)
Water inlet temperature > +1°C to +30°C
Permissible operating pressure p. max. 1 to 10 bar
Temperature range +1°C to +70°C
Protection category to EN 60 529/10.91 IP 55**
Duty cycle 100%
Type of connection Terminal strip
Weight 19 kg 21 kg 56 kg
Colour RAL 7032
Air throughput of fans 240 m3/h 450 m3/h 1,000 m3/h
Temperature control Thermostat-controlled magnetic valve
Temperature monitoring
Internal thermostat, with changeover contact, switching load 16 A,
setting range +20°C to +60°C (factory setting +35°C)
Special voltages available on request. We reserve the right to make technical modifications. * Delivery times available on request ** IP 65 available on request.
Accessories Packs of Page
Temperature indicator 1 3114.100 174
Door-operated switch 1 4127.000 176
Mounting cutout for
external/internal mounting
Only the 4 mounting holes,
7 mm diameter, are required
for internal mounting.
SK 3218. . . . SK 3216.100
Mounting cutout,
external mounting
= Condensate discharge 1/2˝
= Cooling water connection 1/2˝
1
2
200
21
400
950
250
100
450
1400
80
21
Ø 7
340
340
400
280
11246360280
904
950
450
350
410
15
33.5440711.5
180
455455
1400
455
433.5
Ø 8
420
= Condensate discharge 1/2˝
= Cooling water connection 1/2˝
1
2

10. Air/water heat exchanger
Wall mounted, useful cooling output 2250/3000/5000 W
113Rittal system climate control
Air/waterheatexchanger
Approvals,
see page 20.
Performance diagrams
(DIN 3168) (50/60 Hz)
Model No. SK
Water resistance curves
Model No. SK
3218.100
Ti
1000
3000
5000
2000
4000
35°C
25°C
TW
5 10 15 20 25 30
QK
.
VW = 400 l/h
VW = 200 l/h
VW = 100 l/h
.
.
.
45°C
3216.100
∆P
V
.
200 300 400
300
200
100
400
3218.104 / 3218.100
∆P
V
.
300 400 500
400
300
200
500
3218.104
TW
QK
.
5
500
1000
1500
2000
2500
3000
3500
4000
10 15 20 25 30 35 Ti
VW = 400 l/h
VW = 200 l/h
VW = 100 l/h
.
.
.
45°C
35°C
25°C
Tw = Water inlet temperature (°C)
QK = Continuous useful cooling output (W)
Ti = Enclosure internal temperature (°C)
.
Functional diagram
V = Volumetric flow (l/h)
∆P = Water resistance (mbar)
.
3216.100
9000
8000
7000
6000
5000
4000
3000
2000
1000
TW
Ti
5 10 15 20 25 30 35
QK
. 45°C
35°C
25°C
VW = 400 l/h
VW = 200 l/h
.
.
ENVIRONMENTALLY FRIENDLY
C OO L I N G T E C H N O LO GY

11. 114 Rittal system climate control
Technical specifications:
● SK 3249.104: All water-carrying parts
made from stainless steel 1.4571 (V4A).
SK 3249.100 and SK 3219.100: All water-
carrying parts made from copper.
● Electronic leak monitoring ensures per-
fect safety of the entire system even with
heavy condensation, and even in the
event of a pipe fracture.
● A wire screen serves as a water trap,
providing additional mechanical protec-
tion against hosed water.
● A fault signal contact is provided for tem-
perature and leak monitoring.
● The unit can be mounted on enclosures
with a depth of 400 mm and above.
Supply includes:
Fully wired ready for connection with
connector, including drilling template,
sealing mat and assembly parts.
Also required:
Cooling water system such as
Rittal recooling systems,
see from page 76 onwards.
Model No. SK 3249.104* 3249.100 3219.100
Rated operating voltage V, Hz 230, 50/60
Dimensions in mm
W
H
D
547
280
404
600
400
400
Useful cooling output
L 35 W 10, 200 l/h
L 35 W 10, 400 l/h
1700 W
1900 W
2250 W
2500 W
3330 W/3500 W
4000 W/4300 W
Rated current max. 0.91 A/0.94 A 1.2 A/1.8 A
Pre-fuse T 4.0 A
Cooling medium Water (see specifications on page 188)
Water inlet temperature > +1°C to +30°C
Permissible operating pressure p. max. 1 to 10 bar
Temperature range +1°C to +70°C
Protection category to EN 60 529/10.91 IP 55**
Duty cycle 100%
Type of connection Connector plug
Weight 19 kg 21 kg 42 kg
Colour RAL 7032
Air throughput of fans 390 m3/h 560 m3/h
Temperature control Electronically controlled magnetic valve
Temperature monitoring
Collective fault signal via changeover contact, max. switching load 250 V AC, 8 A,
setting range +20°C to +60°C (factory setting +35°C)
Special voltages available on request. We reserve the right to make technical modifications. * Delivery times available on request. ** IP 65 available on request.
Accessories Packs of Page
Temperature indicator 1 3114.100 174
Door-operated switch 1 4127.000 176
= Condensate discharge 1/2˝
= Cooling water connection 1/2˝
1
2
SK 3249. . . . SK 3219.100
= Condensate discharge 1/2˝
= Cooling water connection 1/2˝
1
2
= Air outlet3
Ø 8 (4 x)
53
264
280
397
95 310 8723 23
400
210
226
(538)
280
547
404
280
258
391
150.5
436.5 115
35669.5
(591)
42
Ø
224
100
Ø 8 (4 x)
36
17
600
400
103.5
400
35
73
3
= Air outlet3
3
Mounting cutout Mounting cutout
2
1
2
1

12. Air/water heat exchanger
Roof mounted, useful cooling output 1900/2500/4000 W
115Rittal system climate control
Air/waterheatexchanger
Approvals,
see page 20.
Performance diagrams
(DIN 3168) (50/60 Hz)
Model No. SK
Water resistance curves
Model No. SK
3249.100
1000
500
1500
2000
2500
3000
3500
4000
45°C
TW
Ti
5 10 15 20 25 30
QK
.
25°C
VW = 400 l/h
VW = 200 l/h
VW = 100 l/h
.
.
.
35°C
3219.100
∆P
V
.
400 500 600
500
400
300
600
3249.104 / 3249.100
100
400
300
200
500
200 300 400
V
.
∆P
3249.104
5
750
1000
1250
1500
1750
2000
2250
2500
2750
10 15 20 25 30 35
45°C
TW
Ti
QK
.
25°C
VW = 400 l/h
VW = 200 l/h
VW = 100 l/h
.
.
.
35°C
Tw = Water inlet temperature (°C)
QK = Continuous useful cooling output (W)
Ti = Enclosure internal temperature (°C)
.
Functional diagram
V = Volumetric flow (l/h)
∆P = Water resistance (mbar)
.
3219.100
25°C
35°C
45°C
9000
8000
7000
6000
5000
4000
3000
2000
1000
TW
Ti
5 10 15 20 25 30 35
QK
.
VW = 400 l/h
VW = 200 l/h
.
.
ENVIRONMENTALLY FRIENDLY
C OO L I N G T E C H N O LO GY

13. 116 Rittal system climate control
Technical specifications:
● The units are designed as standard as a
TS 8 side panel.
● Suitable for installation as a rear panel
for 600 mm wide TS 8 enclosure (main-
tain an appropriate distance from the
mounting plate; the air inlet and outlet
must not be obstructed).
● The system is designed for use in heavily
contaminated ambient conditions.
● Monitoring of the enclosure internal tem-
perature via a thermostat with a double
switch point.
● Eliminates the time-consuming work of
cutting out air inlet and outlet holes.
Supply includes:
Fully wired ready for connection with termi-
nal strip, sealing material and assembly
parts.
Model No. SK 3316.180 3316.200
Rated operating voltage V, Hz 230, 50/60
To fit TS 8 enclosures mm
D
H
600
1800
600
2000
Useful cooling output L 35 W 10, 100 l/h 700 W
Rated current max. 0.45 A/0.51 A
Pre-fuse T 4.0 A
Cooling medium Water (see specifications on page 188)
Water inlet temperature > +1°C to +35°C
Permissible operating pressure p. max. 1 to 10 bar
Temperature range +1°C to +70°C
Protection category to EN 60 529/10.91 IP 54
Duty cycle 100%
Type of connection Terminal strip
Weight 26 kg
Colour RAL 7032
Air throughput of fans 170 m3/h
Temperature control Thermostat-controlled magnetic valve
Temperature monitoring
Internal thermostat, with changeover contact, switching load 16 A,
setting range +20°C to +60°C (factory setting +35°C)
Special voltages available on request. We reserve the right to make technical modifications.
Accessories Packs of Page
Temperature indicator 1 3114.100 174
Door-operated switch 1 4127.000 176
SK 3316.180 SK 3316.200
= Water connections
= Hose 10 mm diameter
= Condensate discharge
1
2
3
390
562
57
496
1501346
1546
1797
495
400
45
1190
40
20
94
2
1
2
3
390
562
57
496
1501346
1546
1997
495
400
45
1190
40
20
94
2
1
2
3

14. Air/water heat exchanger
As a side panel for 600 mm deep TS 8 enclosures, useful cooling output 700 W
117Rittal system climate control
Air/waterheatexchanger
Approvals,
see page 20.
Performance diagram
(DIN 3168) (50/60 Hz)
Model No. SK
Water resistance diagram
Model No. SK
3316.180 / 3316.200
1200
1100
1000
900
35
800
700
600
500
400
300
200
3025201510
100
5
35
°C
25
°C
45
°C
TW Ti
QK
.
.
.V = 200 l/h
V = 100 l/h
3316.180 / 3316.200
∆P
V
.
200 300 400
300
200
100
400
Tw = Water inlet temperature (°C)
QK = Continuous useful cooling output (W)
Ti = Enclosure internal temperature (°C)
.
Optimum symbiosis between
the TS 8 enclosure profile and
climate control technology,
plus effective space utilisation.
V = Volumetric flow (l/h)
∆P = Water resistance (mbar)
.
Functional diagram
Also required:
Cooling water system such as
Rittal recooling systems,
see from page 76 onwards.
ENVIRONMENTALLY FRIENDLY
C OO L I N G T E C H N O LO GY

15. 118
Air/air heat exchangers
Benefits, technical details
Rittal system climate control
The requirement for use of air/air heat exchangers is that the ambi-
ent temperature must be below the enclosure internal temperature.
Dust and any aggressive ambient air is unable to enter the enclo-
sure interior, thanks to the two separate air circuits.
Outstanding performance and design
In all situations where the ambi-
ent air is sufficient for cooling,
air/air heat exchangers offer
effective, energy-saving solu-
tions. The high specific ther-
mal output is attributable to the
special construction and func-
tional design of the heat
exchangers:
● A large heat exchanger area
with compact dimensions
● Exceptionally conductive
materials and connections
● Fans that may be controlled
separately
● Optimum flow conditions
Variable output from 17.5 to
90 W/K
Identical mounting cutouts for
various specific thermal out-
puts facilitate easy adaptation
of the output to various require-
ments.
Wall-mounted cooling units are
likewise compatible with this
interface. This means that the
same interface on the enclo-
sure may be used for heat
exchangers and cooling units
of different output categories.
Flow and siting conditions
Internal/external mounting
Air/air heat exchangers may
optionally be mounted on the
outside of the enclosure or
inside the enclosure. The slim-
line design facilitates external
mounting on the door, rear
panel and side panels. The
range also includes a special
heat exchanger for roof-mount-
ing.
By diverting the waste air
upwards, this prevents the cre-
ation of disruptive airflows in
front of the enclosures.
The fans in the internal and
external circuit may be acti-
vated separately and thus
adapted ideally to the ambient
conditions.
Internal mountingExternal mounting

16. 119Rittal system climate control
Air/airheatexchangers
Service / assembly benefits
Benefits:
● Specific thermal output
from 17.5 to 90 W/K
● External and internal
circuit may be controlled
separately
● Mounting cutouts and
enclosure dimensions
identical to TopTherm
wall-mounted cooling
units
● Suitable for external and
internal mounting
● Top design identical to
TopTherm wall-mounted
cooling units
Important
● The temperature
difference between the
room temperature and
enclosure internal
temperature will have a
decisive effect on the
heat loss that may be
dissipated.
For calculation basis
see page 189
or refer to the Internet at
www.rittal.de
Simple maintenance
The heat exchanger unit is very
easily removed and cleaned.
The cleverly designed layout
facilitates time-saving, cost-
cutting maintenance.
Reliability benefits
High protection category
Thanks to the seamlessly
sealed heat exchanger mod-
ule, a protection category of
IP 54 to EN 60 529/10.91 is
achieved.
High load capacity
The motors of the fans are
equipped with thermal winding
protection.
Top quality:
Guaranteeing protection
for your electronics.
All devices in the Rittal
TopTherm series are tested in
accordance with the inter-
nationally valid approvals
(GS, UL).
Easily retrofitted
Thanks to the low weight,
simple assembly cutouts and
problem-free attachment of the
heat exchangers, a cabinet or
enclosure may be easily retro-
fitted.

17. 120 Rittal system climate control
280
550
Technical specifications:
● The compact sheet steel structure
comprises an interchangeable heat
exchanger module.
● TopTherm heat exchangers may option-
ally be fitted to the inside (preferably on
the door) or outside (side panel, door,
rear panel or roof) of the enclosure.
Mounting cutouts are identical to the
TopTherm cooling unit range.
● The heat exchanger module is easily
removed, for effortless cleaning.
● All motors are equipped with thermal
winding protection.
● The heat exchanger membranes are
conductively connected to one another
and incorporated into the electrical
safety features.
● The internal and external air circuit may
be connected separately.
● The two separate air circuits effectively
prevent the ingress of dust, humidity or
dirt.
Supply includes:
Fully wired unit ready for connection.
SK 3126.100 SK 3127.100* / SK 3128.100 / SK 3129.100
Model No. SK 3126.100 3127.100 3128.100 3129.100
Rated operating voltage V, Hz 230, 50/60
Dimensions in mm
W
H
D
280
550
150
400
950
205
400
950
225
Specific thermal output 17.5 W/K 30 W/K 45 W/K 60 W/K
Fans 2 per heat exchanger
Max. rated current per fan 0.11 A/0.13 A 0.28 A/0.34 A 0.3 A/0.4 A 0.38 A/0.4 A
Power per fan 23 W/27 W 60 W/75 W 70 W/90 W 85 W/90 W
Air throughput of fans
External circuit 265 m3/h / 315 m3/h 480 m3/h / 525 m3/h 600 m3/h / 625 m3/h 860 m3/h / 900 m3/h
Internal circuit 265 m3/h / 315 m3/h 480 m3/h / 525 m3/h 600 m3/h / 625 m3/h 860 m3/h / 900 m3/h
Temperature range –5°C to +55°C
Weight 12 kg 18 kg 19 kg 21 kg
Colour RAL 7035
Protection category to
EN 60 529/10.91
Internal circuit IP 54
Special voltages available on request. We reserve the right to make technical modifications.
Accessories Packs of Page
Filter mats 3 3286.300 3286.400 182
Metal filter 1 3286.310 3286.410 183
Thermostat 1 3110.000 175
Temperature indicator 1 3114.100 174
Speed control 1 3120.000 176
205*/225
50
155*/175
150 42
108
Internal
mounting
External
mounting
Mounting cutout,
external mounting
Mounting cutout,
internal mounting
External
mounting
Internal
mounting
Mounting cutout,
external mounting
Mounting cutout,
internal mounting
950
400
400
250
345
280
36.5235
255
950
15
35025
Ø 9.5 (8x)
385
350
18 x 45°
280
(230)
200
254
524
Ø 8 (4x)
Ø 15 (2x)
266
25492
518
550
280
550
501
251
380
Ø 9.5 (4x)
400
370
R6 (4x) 25
920
920
950
2
25x45°

18. TopTherm air/air heat exchanger
Wall mounted, specific thermal output 17.5 – 60 W/K
121Rittal system climate control
TopThermair/airheatexchanger
Top design for internal and
external mounting.
Approvals,
see page 20.
Functional diagram

19. 122 Rittal system climate control
215 50
165
1580
400
280
350
Ø 13 (8x)
400
35295
380
1580
260
25875
320
275
340
Technical specifications:
● The compact sheet steel structure
comprises an interchangeable heat
exchanger module.
● TopTherm heat exchangers may
optionally be fitted to the inside
(preferably on the door) or outside
(side panel, door, rear panel or roof)
of the enclosure. Mounting cutouts are
identical to the TopTherm cooling unit
range.
● The heat exchanger module is easily
removed, for effortless cleaning.
● All motors are equipped with thermal
winding protection.
● The heat exchanger membranes are
conductively connected to one another
and incorporated into the electrical
safety features.
● The internal and external air circuit may
be connected separately.
● The two separate air circuits effectively
prevent the ingress of dust, humidity or
dirt.
Supply includes:
Fully wired unit ready for connection.
Model No. SK 3130.100
Rated operating voltage V, Hz 230, 50/60
Dimensions in mm
W
H
D
400
1580
215
Specific thermal output 90.0 W/K
Fans 2 per heat exchanger
Rated current 1.35 A/1.8 A
Power per fan 105 W/145 W
Air throughput of fans
External circuit 850 m3/h / 945 m3/h
Internal circuit 850 m3/h / 945 m3/h
Temperature range –5°C to +55°C
Weight 34 kg
Colour RAL 7035
Protection category
to EN 60 529/10.91
Internal circuit IP 54
Special voltages available on request. We reserve the right to make technical modifications.
Accessories Packs of Page
Filter mats 3 3286.400 182
Metal filter 1 3286.410 183
Thermostat 1 3110.000 175
Temperature indicator 1 3114.100 174
Speed control 1 3120.000 176
External mounting Internal mounting
Mounting cutout,
internal mounting
Mounting cutout,
external mounting
400
370
324
324
Ø 13 (4x)
1558
1554
1535
1580
Ø 12 (2x)
25
R6 (2x)
376
SK 3130.100

20. TopTherm air/air heat exchanger
Wall mounted, specific thermal output 90 W/K
123Rittal system climate control
TopThermair/airheatexchanger
Optimum space utilisation,
thanks to the minimal equip-
ment depth.
Approvals,
see page 20.
Functional diagram

21. 124 Rittal system climate control
Technical specifications:
● The compact aluminium structure
comprises an interchangeable heat
exchanger module.
● Techline Mini heat exchangers may
optionally be fitted to the inside (prefera-
bly on the door) or outside (side panel,
door, rear panel or roof) of the enclosure.
● The heat exchanger module is easily
removed with 4 screws, for effortless
cleaning.
● All motors are equipped with thermal
winding protection.
● The heat exchanger membranes are
conductively connected to one another
and incorporated into the electrical
safety features.
● The internal and external circuits can be
connected separately; separate routing
effectively prevents the ingress of dust,
moisture and dirt.
Supply includes:
Fully wired unit ready for connection. Fans
are connected via two 3-wire connection
cables, with wire end ferrules.
SK 3125.000 / SK 3126.000 / SK 3127.000
Mounting cutout, internal mounting
SK 3128.000 / SK 3129.000 / SK 3130.000
Mounting cutout, internal mounting
Mounting cutout, external mounting Mounting cutout, external mounting
A (mm) 380.0 500.0 380.0 500.0 780.0 730.0
B (mm) 187.5 187.5 271.5 271.0 271.0 355.0
C (mm) 155.0 155.0 239.0 239.0 239.0 323.0
D (mm) 127.0 127.0 211.0 225.0 220.0 304.0
E (mm) 228.0 348.0 228.0 230.0 460.0 410.0
F (mm) 178.0 298.0 178.0 172.0 296.5 246.5
G (mm) – – – 23.0 25.5 25.5
H (mm) – – – 106.0 160.0 160.0
I (mm) – – – 61.5 40.0 40.0
J (mm) – – – 26.5 30.0 30.0
K (mm) – – – 135.0 160.0 160.0
L (mm) – – – 30.0 62.0 62.0
M (mm) – – – 165.5 231.5 231.5
N (mm) – – – 48.0 36.0 36.0
P (mm) – – – 135.0 82.5 82.5
R (mm) 107.5 107.5 107.5 117.5 127.5 127.5
Model No. SK 3125.000 3126.000 3127.000 3128.000 3129.000 3130.000
Rated operating voltage V, Hz 230, 50/60
Dimensions in mm
W
H
D
187.5
380
162.5
187.5
500
162.5
271.5
380
162.5
271
500
110
271
780
110
355
730
110
Specific thermal output 14.6 W/K 18.7 W/K 18.1 W/K 19.5 W/K 30.0 W/K 37.0 W/K
Fans 2 per heat exchanger
Max. rated current per fan 0.28 A/0.25 A 0.36 A/0.45 A
Power per fan 43/42 W 82/103 W
Air throughput of fans
External circuit 260/300 m3/h 570 m3/h
Internal circuit 260/300 m3/h 570 m3/h
Noise level 54 dB (A) 57 dB (A) 61 dB (A) 67.5 dB (A) 64 dB (A)
Temperature range –5°C to +55°C
Weight 4.3 kg 4.9 kg 5.0 kg 5.1 kg 7.4 kg 8.1 kg
Colour Black anodised
Cooling surface 0.62 m2 0.99 m2 0.9 m2 0.63 m2 1.01 m2 1.23 m2
Protection category
to EN 60 529/10.91
Internal circuit IP 54
Connection cable 2 x 3 m 2 x 5 m
Special voltages available on request. We reserve the right to make technical modifications.
Accessories Packs of Page
Thermostat 1 3110.000 175
Temperature indicator 1 3114.100 174
Speed control 1 3120.000 176
12
25
A
E
R
76
107
C
R25
76
B
C
D
F
Ø 7
3030
EKK
B
A
D
FHJM
H I
C
R2525R
12
G G
Ø 7
12
L
F
A
25
C
25
25
25
Ø 7
Ø 18
12
25RR25
303035
B
C
D
E7676
MHJ
KEK
H I
F
A
DG G
C
PP
B
R25R25
12
Ø 7
Ø 18
N
L

22. Techline Mini air/air heat exchangers
Wall mounted, specific thermal output 14.6 – 37 W/K
125Rittal system climate control
TechlineMiniair/airheatexchangers
Techline Mini heat exchangers
for targeted heat dissipation in
particularly confined spaces.
IR registered design
no. DM/013 569
with validity for BE, CH, DE,
ES, FR, IT, LI, LU, NL
Approvals,
see page 21.
Extremely compact, therefore
suitable for flexible use.
Functional diagram
ENVIRONMENTALLY FRIENDLY
C OO L I N G T E C H N O LO GY

23. 126 Rittal system climate control
Technical specifications:
● The compact aluminium structure
comprises an interchangeable heat
exchanger module.
● Techline heat exchangers may optionally
be fitted to the inside (preferably on the
door) or outside (side panel, door, rear
panel or roof) of the enclosure.
● The heat exchanger module is easily
removed with 4 screws, for effortless
cleaning.
● All motors are equipped with thermal
winding protection.
● The heat exchanger membranes are
conductively connected to one another
and incorporated into the electrical
safety features.
● The internal and external circuits can be
connected separately; separate routing
effectively prevents the ingress of dust,
moisture and dirt.
Supply includes:
Fully wired unit ready for connection. Fans
are connected via two 3-wire connection
cables, with wire end ferrules.
SK 3131.000 / SK 3132.000 /
SK 3133.000 / SK 3134.000
Mounting cutout, internal mounting
SK 3135.000 / SK 3136.000
Mounting cutout, internal mounting
Mounting cutout, external mounting Mounting cutout, external mounting
A (mm) 1200.0 1480.0 1480.0 1780.0 1600.0 1780.0
B (mm) 271.0 271.0 439.0 439.0 355.0 439.0
C (mm) 239.0 239.0 407.0 407.0 323.0 407.0
D (mm) 220.0 220.0 388.0 388.0 304.0 388.0
E (mm) 880.0 1160.0 1160.0 1460.0 1280.0 1460.0
F (mm) 716.5 996.5 996.5 1296.5 1196.5 1376.5
G (mm) 25.5 25.5 25.5 25.5 – –
H (mm) 160.0 160.0 160.0 160.0 – –
I (mm) 40.0 40.0 40.0 40.0 – –
J (mm) 30.0 30.0 30.0 30.0 – –
K (mm) 160.0 160.0 160.0 160.0 – –
L (mm) 62.0 62.0 62.0 62.0 – –
M (mm) 231.5 231.5 231.5 231.5 – –
Model No. SK 3131.000 3132.000 3133.000 3134.000 3135.000 3136.000
Rated operating voltage V, Hz 230, 50/60
Dimensions in mm
W
H
D
271
1200
110
271
1480
110
439
1480
110
439
1780
110
355
1600
57.5
439
1780
57.5
Specific thermal output 42.0 W/K 44.0 W/K 63.0 W/K 69.0 W/K 44.5 W/K 48.1 W/K
Fans 2 per heat exchanger
Max. rated current per fan 0.36 A/0.45 A 0.25 A/0.29 A
Power per fan 82/103 W 55/65 W
Air throughput of fans
External circuit 570 m3/h 425/460 m3/h
Internal circuit 570 m3/h 425/460 m3/h
Noise level 62 dB (A) 61.5 dB (A) 68 dB (A) 61 dB (A) 64.5 dB (A) 63 dB (A)
Temperature range –5°C to +55°C
Weight 9.3 kg 10.3 kg 12.5 kg 18.9 kg 11.8 kg 14.8 kg
Colour Black anodised
Cooling surface 2.46 m2 3.43 m2 5.44 m2 7.00 m2 2.82 m2 4.03 m2
Protection category
to EN 60 529/10.91
Internal circuit IP 54
Connection cable 2 x 5 m
Special voltages available on request. We reserve the right to make technical modifications.
Accessories Packs of Page
Thermostat 1 3110.000 175
Temperature indicator 1 3114.100 174
Speed control 1 3120.000 176
EKK
B
A
D
FHJM
H I
C
127.52525127.5
12
G G
Ø 7
12
L
E160160
B
A
D
231.5
C
F110
144
120
158
25127.525
12
127.5
Ø 4
Ø 7
62
MHJ
KEK
H I
F
A
DG G
C
82.582.5
B
127.525127.525
12
Ø 7
Ø 18
36
L
82.582.5
231.5
160E160
A
D
C
B
144
F110
158
120
127.5127.52525
62
12
Ø 7
Ø 18
36
Ø 4

24. Techline air/air heat exchangers
Wall mounted, specific thermal output 42 – 69 W/K
127Rittal system climate control
Techlineair/airheatexchangers
Simple cutouts permit retrofit-
ting into pre-installed enclo-
sures.
Approvals,
see page 21.
Effortless cleaning by simply
removing the heat exchanger
module.
Functional diagram
ENVIRONMENTALLY FRIENDLY
C OO L I N G T E C H N O LO GY

25. 128 Rittal system climate control
420
301360
400
440
320
480
600
Ø 23 (2x)
Ø7(4x)
62 45
50
21
Technical specifications:
● The heat exchanger module and the
enclosure of the heat exchanger form a
single unit, thereby substantially enlarg-
ing the surface area for heat dissipation.
● This design gives the unit an extremely
low weight (16.8 kg) combined with a
high degree of enclosure rigidity.
● The built-in radial fans ensure effective
air circulation, even where the enclosure
is densely packed.
● All motors are equipped with thermal
winding protection.
● As you would expect, the heat
exchanger membranes are conductively
connected to one another and thereby
incorporated into the electrical safety
features.
● The internal and external circuits can be
connected separately; separate routing
effectively prevents the ingress of dust,
moisture and dirt.
Supply includes:
Fully wired unit ready for connection. Fans
are connected via two 3-wire connection
cables, with wire end ferrules.
Model No. SK 3248.000
Rated operating voltage V, Hz 230, 50/60
Dimensions in mm
W
H
D
595
362
440
Specific thermal output 66 W/K
Fans 2 per heat exchanger
Max. rated current per fan 0.35 A
Power per fan 75 W
Air throughput of fans
External circuit 965 m3/h
Internal circuit 965 m3/h
Noise level 62.5 dB (A)
Temperature range –20°C to +55°C
Weight 16.8 kg
Colour Black anodised
Cooling surface 4.40 m2
Protection category (internal circuit)
to EN 60 529/10.91
IP 54
Connection cable approx. 3.0 m
Special voltages available on request. We reserve the right to make technical modifications.
Accessories Packs of Page
Thermostat 1 3110.000 175
Temperature indicator 1 3114.100 174
Speed control 1 3120.000 176
= Air inlet
= Air outlet
1
2
595
362
440
SK 3248.000

26. Techline air/air heat exchangers
Roof mounted, specific thermal output 66 W/K
129Rittal system climate control
Techlineair/airheatexchangers
Approvals,
see page 21.
Roof-mounted heat exchangers
are also easily retro-fitted.
Functional diagram
IR registered design
no. DM/013 569
with validity for BE, CH, DE,
ES, FR, IT, LI, LU, NL
ENVIRONMENTALLY FRIENDLY
C OO L I N G T E C H N O LO GY