Sentera Controls DTMF Service manual

Mounting and operating instructions
DTMF MULTIFUNCTIONAL
DUCT SWITCH

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Table of contents
SAFETY AND PRECAUTIONS 3
PRODUCT DESCRIPTION 4
ARTICLE CODES 4
INTENDED AREA OF USE 4
TECHNICAL DATA 4
STANDARDS 4
OPERATIONAL DIAGRAMS 5
WIRING AND CONNECTIONS 5
MOUNTING & OPERATING INSTRUCTIONS IN STEPS 6
TRANSPORT AND STOCK KEEPING INFORMATION 8
WARRANTY INFORMATION AND RESTRICTIONS 8
MAINTENANCE 8
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MULTIFUNCTIONAL
DUCT SWITCH

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SAFETY AND PRECAUTIONS
Read all information, the datasheet, mounting instructions and wiring scheme
before working with the product. For personal and equipment safety, and for
optimum product performance, make sure you entirely understand the contents
before installing, using, or maintaining this product.
For safety and licensing (CE) reasons, unauthorised conversion and/ or modifications
to the product are not permitted.
e product must not be exposed to abnormal conditions, such as: extreme
temperatures, direct sunlight or vibrations. Chemical vapours with high concentration
in combination with long exposure times can affect the product performance. Make
sure the work environment is as dry as possible; check for condensation spots.
All installations shall comply with the local health and safety regulations and local
electrical codes. is product can only be installed by an engineer or a technician
who has an expert knowledge of the product and safety precautions.
Avoid contacts with energised electrical parts; always treat the product as if it
is life. Always disconnect the power source before connecting the power cables,
servicing or repairing the product.
Always verify that you apply appropriate power supply to the product and use wires
with appropriate size and characteristics. Make sure that all the screws and nuts are
well tightened and fuses (if any) are fitted well.
Recycling of equipment and packaging should be taken into consideration and
disposed in accordance with local and national legislation/regulations.
In case there are any questions that are not answered, please contact your technical
support or consult a professional.
DTMF
MULTIFUNCTIONAL
DUCT SWITCH

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PRODUCT DESCRIPTION
e DTMF is a duct multifunctional switch, which measures temperature, relative
humidity and CO2concentration level. For each of them, there are 4 predefined
ranges acting as measurement windows and 1 user-definable range.
ARTICLE CODES
Code Supply Connection
DTMFG 24 VAC / VDC ± 10 % 3 - wire
DTMFF 18—34 VDC 4 - wire
INTENDED AREA OF USE
■Monitoring and maintaining temperature, relative humidity and CO2levels in duct
ventilation systems
TECHNICAL DATA
■3 relay outputs: C/O (230 VAC / 2 A)
■Power consumption:
►no load: max. 80 mA
►full load: max. 140 mA
■Selectable temperature ranges: 0—30 °C/10—40 °C/20—50 °C/0—50 °C
■Selectable rel. humidity ranges: 20—90 % rH / 0—60 % rH/ 0—80 % rH / 0—100 % rH
■Selectable CO2ranges: 450—1850 ppm / 0—1.000 ppm/ 0—1.500 ppm / 0—2.000 ppm
■3 selectable switching points: by trimmers
■Fixed temperature hysteresis: 2 °C
■Fixed rel. humidity hysteresis: 5 % rH
■Fixed CO2hysteresis: 200 ppm
■Enclosure and tubing:
►ASA, grey (RAL9002)
►IP54 (according to EN 60529)
■Fixing flange:
►PE, black (RAL9004)
►IP20 (according to EN 60529)
■Operating ambient conditions:
►temperature: 0—50 °C
►rel. humidity: < 100 % rH (non-condensing)
■Storage temperature: -40—60 °C
STANDARDS
■Low Voltage Directive 2006/95/EC
■EMC Directive 2004/108/EC: EN 61326
■WEEE Direc tive 2012/19/EU
■RoHs Directive 2011/65/EU
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MULTIFUNCTIONAL
DUCT SWITCH

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OPERATIONAL DIAGRAMS
Relay
output 1
rel on
050 T, [°C]
rel off
SP-hyst SP
Relay
output 2
rel on
0
100 rH, [%]
rel off
SP-hyst SP
Relay
output 3
rel on
0
2.000 CO2, [ppm]
rel off
SP-hyst SP
WIRING AND CONNECTIONS
Vin Positive DC voltage/AC ~
GND Ground/AC ~
NO1 Normally open contact
COM1 Common contact
NC1 Normally closed contact
NO2 Normally open contact
COM2 Common contact
NC2 Normally closed contact
NO3 Normally open contact
COM3 Common contact
NC3 Normally closed contact
Connections Cable cross section: max. 0,5 / 1,5 mm2
Cable gland clamping range: 5—10 mm
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MULTIFUNCTIONAL
DUCT SWITCH

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MOUNTING & OPERATING INSTRUCTIONS IN STEPS
Before you start mounting the DTMF duct switch read carefully “Safety and
Precautions”.
1. Open the cover and insert the connecting cables through the cable gland of
theunit.
2. Do the wiring according to the wiring diagram (see Fig. 1) using the legend
information from section “Wiring and connections”.
Fig. 1 Wiring and connections
Power supply
24 VAC / VDC ± 10%/18—34 VDC
Relay output 3
Normally closed
Common
Normally open
Relay output 2
Normally open
Normally closed
Common
Relay output 1
Normally closed
Common
Normally open
3. Adjust the settings:
3.1 To select a temperature range, use the Temp. jumper shown inFig.2 and
the enclosed information.
3.2 To select the rel. humidity range, use the Humid. jumper shown inFig. 2 and
the enclosed information.
3.3 To select the CO2range, use the CO2jumper shown in Fig. 2 and the
enclosed information.
Fig. 2 Sensor range selection jumpers
5
4
3
2
1
0—30 °C
20—90 % rH
450—1.850 ppm
5
4
3
2
1
10—40 °C
0—60 % rH
0—1.000 ppm
5
4
3
2
1
20—50 °C
0—80 % rH
0—1.500 ppm
5
4
3
2
1
0—50 °C
0—100 % rH
0—2.000 ppm
Temp. Humid. CO2 Temp. Humid. CO2 Temp. Humid. CO2 Temp. Humid. CO2
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MULTIFUNCTIONAL
DUCT SWITCH

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3.4 To select the temperature setpoint for relay 1 switching, use the Temp
trimmer (Fig. 3).
3.5 To select the rel. humidity setpoint for relay 2 switching, use the Humid.
trimmer. (Fig. 3).
3.6 To select the CO2setpoint for relay 3 switching, use the CO2 trimmer. (Fig. 3).
Fig. 3 Setpoint trimmers
4. Mount the unit outside a duct with the tube mounted inside the duct but fixed
outside it.
4.1 Drill a tight-sealing hole according the correct tube section (Ø 13 mm).
4.2 Fix the flexible flange (Fig. 4) on the duct outer surface using the self-drilling
screws, delivered with the unit. en install the tube inside the flexible
flange. Mind the airflow direction.
4.3 Install the tube at the desired depth in the duct using the screw in the
flexible flange.
4.4 Install and connect the cables with a “drip loop”. You can also fix the unit
outside the duct via the mounting holes and as per the drawing shown
inFig. 5.
Fig. 4 Fixing flange Fig. 5 Mounting dimensions
2x Ø
5
60
4x Ø 4,
5
70
66
ATTENTION Installation of the unit near high EMI-emitting devices may lead to faulty
measurements. Use shielded wiring in areas with high EMI.
ATTENTION Keep 15 cm (5,9’’) minimal distance between the sensor lines and the 230 VAC
power lines.
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MULTIFUNCTIONAL
DUCT SWITCH

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ATTENTION Always use two separate transformers: one for the sensor and one for the
controller.
5. Close the enclosure and fix the cover.
6. Switch on the power supply.
ATTENTION Do not exceed the maximum power supply rating! Measure before installation!
Unregulated 24 VAC supply units provide higher nominal output voltage and
activate the integrated fuse protection.
ATTENTION If a G-type article is using the same AC power supply source (transformer) as
F-type article, a SHORT CIRCUIT may result when the power supply and analogue
signal terminals are connected to the same common ground! In this case always
connect different article types to separate AC transformers or use the same
article version.
TRANSPORT AND STOCK KEEPING INFORMATION
Avoid shocks and extreme conditions; stock in original packing.
WARRANTY INFORMATION AND RESTRICTIONS
Two years from the delivery date against defects in manufacturing. Any modifications
or alterations to the product after the date of publication relieve the manufacturer
of any responsibilities. e manufacturer bears no responsibility for any misprints or
mistakes in this data.
MAINTENANCE
In normal conditions this product is maintenance-free. If soiled, clean with a dry or
dampish cloth. In case of heavy pollution, clean with a non-aggressive product. In
these circumstances the unit should be disconnected from the supply. Pay attention
that no fluids enter the unit. Only reconnect it to the supply when it is completelydry.
DTMF
MULTIFUNCTIONAL
DUCT SWITCH