Regin DTT Instructions Manual

INSTRUCTION
EN
DTT(H)(C)
IN20046 REV. D, 2024-12-03
Caution! Read and understand the instruction before us-
ing the product.
Caution! Ensure that the installation complies with local
safety regulations.
Caution! Before installation or maintenance, the power
supply should first be disconnected. Installation or main-
tenance 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 installation, or through removal of or deactivation
of any safety devices.
Function
The measurements received from DTT(H)(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
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, -40...+60 °C
temperature
Output signal, 0...10 V (0 V = -40 °C, 10 V = 60 °C)
temperature
Accuracy, temperature ±0.2 K at 0...60 °C
Measuring range, 0...100 % RH
humidity
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 0...2000 ppm
2
Output signal, CO 0...10 V (0 V = 0 ppm, 10 V = 2000 ppm)
2
Accuracy, CO ±(50 ppm + 3 % of the measured value) at 25 °C
2
Temperature depend- 2.5 ppm/K at 0...50 °C
ency, CO
2
Cable gland 2 x M16
Cable connection Screw terminals max. 1.5 mm
Warmup time 4 min
Diameter, probe 12 mm
Dimensions, external 104 x 211/212.5 x 79 mm
(WxHxD)
Weight (incl. packaging) 0.23 kg (DTTH) / 0.25 kg (DTTC/DTTHC)
Table 1 Response times
Article Response time, Response time,
temp humidity
DTTH <50 s 1 <50 s 1
DTTC <50 s 1 -
DTTHC <50 s 1 <50 s 1
1. At 3 m/s air speed
DTT(H)(C)
Installation
1. 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.
2. Use a 13 mm drill bit to make a hole in duct
3. Twist the cover to access the terminals
4. Place the DTTC/DTTHC transmitter in the duct with the cable
glands perpendicular to the air flow direction. See Figure 1.
5. Connect the wires to the terminals according to the wiring diagram
in Figure 3
Note! Make sure to use a round cable and ensure that
the cable gland makes a tight seal around the cable.
You should also consider possible leakage inside a
short cable (such as, air in between conductors). Other-
wise you can have incorrect measurement values due
to intruding air.
6. After applying power to the transmitter, the time it takes to show
correct values is specified under Warm-up time in the technical data
table. A green LED, located under the cover, indicates when the
transmitter is ready to use (see Table 2).
7. Screw the cover back on and ensure that the cover is properly
fastened, and that the cable gland makes a tight seal around the cable
2 (AWG 16)
Figure 1 Installation direction in duct (A = air flow direction)
Caution! If there is a risk for condensation in the probe,
mount the transmitter upright.
Response time,
CO
2
-
<100 s 1
<100 s 1
A
1 (7)