Regin DTTH, Instruction

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EN INSTRUCTION
DTTH(C)
IN20046 REV. B, 2021-06-08
C Caauuttiioonn!! Read and understand the instruction before using the product.
C Caauuttiioonn!! Ensure that the installation complies with local safety
regulations.
C Caauuttiioonn!! Before installation or maintenance, the power supply should first
be disconnected. Installation or maintenance of this unit should only be
carried out by qualified personnel. The manufacturer is not responsible
for any eventual damage or injury caused by inadequate skills during instal-
lation, or through removal of or deactivation of any security devices.
Function
The measurements received from DTTH(C) can be used to control
ventilation with high precision and improve the air quality in for
example residential and office areas. By increasing the air exchange only
when it is necessary, it is possible to minimise energy costs.
Technical Data
Supply voltage 24 V ~ (20…28 V ~ 50…60 Hz, 2 VA) / 15…35
V DC
Power consumption < 1.5 W
Load impedance, 0...10 V Min. 10 kΩ
Protection class IP65 (housing)
Ambient humidity 0…90 % RH, non-condensing
Ambient temperature -40…+60 °C (DTTH) / 0…+50 °C (DTTHC)
Storage temperature -40…+80 °C
Max overvoltage +10 V (referenced to GND)
Mounting Duct
Insertion length 37…195 mm
Media Air, non-combustible and non-aggressive gases
Measuring range,
temperature -40…+60 °C
Output signal,
temperature 0…10 V (0 V = -40 °C, 10 V = 60 °C)
Accuracy, temperature ±0.2 K at 0…60 °C
Measuring range,
humidity 0…100 % RH
Output signal, humidity 0…10 V (0 V = 0 % RH, 10 V = 100 % RH)
Accuracy, humidity ±2 % RH at 25 °C, 10...90 % RH
Measuring range, CO
2
0…2000 ppm
Output signal, CO
2
0…10 V (0 V = 0 ppm, 10 V = 2000 ppm)
Accuracy, CO
2
±(50 ppm + 3 % of the measured value) at 25 °C
Temperature depend-
ency, CO
2
2.5 ppm/K at 0…50 °C
Cable gland 2 x M16
Cable connection Screw terminals max. 1.5 mm 2 (AWG 16)
Warmup time 4 min
Diameter, probe 12 mm
Dimensions, external
(WxHxD) 104 x 211/212.5 x 79 mm
Table 1 Response times
Article Response time,
temp Response time,
humidity Response time,
CO
2
DTTH <50 s 1 <50 s 1 -
DTTHC <50 s 1 <50 s 1 <100 s 1
1. At 3 m/s air speed
Installation
– Find a location in the duct where the transmitter can be expected to
give a representative reading. It should be placed at least 4 duct
diameters from a bend or other obstacle, e.g. a damper, for minimal
turbulence.
– Use a 13 mm drill bit to make a hole in duct
– Twist the cover to access the terminals
– Place the DTTHC transmitter in the duct with the cable glands
perpendicular to the air flow direction, see Figure 1 .
– Connect the wires to the terminals according to the wiring diagram
in Figure 2
– After applying power to the transmitter, the time it takes to show
correct values is specified under Warmup time in the technical data
table. A green LED, located under the cover, indicates when the
transmitter is ready to use (see
Table 2 ).
– Screw the cover back on and ensure that it is properly fastened and
that the cable gland makes a tight seal around the cable.
N No ottee!! If there is a risk for condensation in the probe, mount the transmit-
ter upright.
Figure 1 Installation direction in duct (A = air flow direction)
LED indications
A LED light under the lid indicates the status of the transmitter as
shown in
Table 2 .
Table 2 LED status indications
LED indications Description
Green, solid Power is on. All is OK.
Red, solid Sensor problem.
Wiring
The terminals are accessed by twisting the cover. Connect the cables
according to the wiring diagram below.
Figure 2 Wiring diagram
A
Ɵ Ɵ Ɵ Ɵ Ɵ Ɵ Ɵ
□ □ □ □ □ □ □
G
G0
AO1 AO2 AO3
AGND
AO4
DTTH(C) 1