nVent RAYCHEM AT-TS-13 Surface Sensing Thermostat Instruction Manual
- October 30, 2023
- nVent RAYCHEM
Table of Contents
RAYCHEM
AT-TS-13 / AT-TS-14
Installation instructions
https://www.youtube.com/watch?v=6m67lAv3hrg
Unit layout
| A Green LED | Heating cable on |
|---|---|
| B Red LED | Sensor break |
| C Red LED | Sensor short-circuit |
The thermostat should be installed and adjusted by qualified personnel only. The relevant safety regulations must be observed. Check the voltage and the rated power of the switching circuit. Follow the “General installation instructions for self-regulating heating cables”.
Product overview
nVent RAYCHEM AT-TS thermostats provide temperature control in non-hazardous
area.
The temperature set point can be checked through a window in the lid. LED’s
are providing an indication when the relay contact is closed (Heating ON) and
when the temperature sensor is defect (sensor break or sensor short-circuit).
The temperature sensor has a length of 3 meter and can be shortened for
ambient sensing operating. Direct connection of the heating cable is possible.
Connection kits need to be ordered separately. The thermostat is available in
2 temperature ranges.
Functional description
When the temperature exceeds the setpoint, the switching contact opens and
switches the heating cable off.
When the temperature falls below the setpoint, the switching contact closes.
The integrated green LED display lights up to indicate that the heating cable
is switched on. In the event of a sensor defect, the switching contact closes.
The integrated red LED display lights up to indicate that there is a defect.
In the event of power loss, the switching contact opens.
Installation
A. Pipe line sensing control
- Attach temperature sensor to the pipe with adhesive tape. The sensor should rest firmly against the pipe without intermediate space. The minimum distance of the sensor from fittings and the pipe end is 1 m. The angle of the pipe between the heating cable and the sensor should be 90-120°.
- Mount the housing in the required position.
- Adjust the temperature setpoint. Finish the wiring and insulation. Only operate with insulated sensor.
- Fill the pipes, check the operating points with a thermometer and correct if necessary. Due to the low heat conductivity of non-metallic pipes, adjust the thermostat operating point only when the pipe is full.
B. Ambient sensing thermostat (not recommended for AT-TS-14)
Select a suitable place for installation of the thermostat and the sensor for
ambient temperature measurement.
In case of outdoor installation of the thermostat, the sensor cable can be
made shorter so that the sensor is located within the screwed gland (M16).
Make sure NOT to mount the sensor tip in direct sunlight or wind exposure; a
sun and rain cover is recommended.
Do not install the thermostat under the insulation.
| Technical data: | AT-TS-13 | AT-TS-14 |
|---|---|---|
| Adjustable temperature range | -5 to +15°C | 0°C to +120°C |
| Supply voltage | 230 V +10%/-15%, 50/60 Hz | |
| Power consumption | max. 1.8 VA | |
| Max. switching current | 16 A, 250 V AC | |
| Max. conductor size | 2.5 mm2 | |
| Switching differential | 0.6 -1 K | |
| Switching accuracy | +5°C: ± 1 K (calibration point) | |
| Switch type* | SPST (normally open) |
*The switching relay is potential-free when the bridge wire is removed between terminals 1 and 5.
Enclosure:
| Temperature setting | inside |
|---|---|
| Exposure temperature | -20°C to +50°C |
| Ingress protection | IP 65 according to EN 60529 |
| Entries | M 20 for supply cable (dia. 8-13 mm), M 25 for connection to heating |
cable (dia. 11-17 mm not direct) and M 16 for sensor cable.
Weight (without sensor)| ± 440 g
Material| ABS
Lid fixing| Nickel plated quick release screws (4)
Mounting| nVent RAYCHEM pipe support bracket JB-SB-01, SB-110 or SB-111 or
wall mounting
Temperature sensor:| AT-TS-13| AT-TS-14
---|---|---
Type| PTC KTY 83-110|
sensor cable*| 3 m|
Diameter sensor cable| ± 5.5 mm|
Diameter sensor head| 6.5 mm|
Max. exposure temperature sensor cable| PVC: 80°C| Silicone: 160°C
Spare sensor| HARD-69, silicone sensor cable max. 160°C
- The sensor cable can be extended up to 100 m when a cross section of 1,5 mm2 is used. The sensor (extension) cable should be shielded if it is laid in cable ducts or in the vicinity of power cables to avoid inductive interferences.
AT-TS-13/14 direct
PTC KTY 83-110 Sensor characteristic
| Temperature(°C) | R (Ohm) | T (°C) | R (Ohm) |
|---|---|---|---|
| –5 | 787 | 25 | 820 |
| 0 | 820 | 50 | 1000 |
| 5 | 854 | 7000% | 1379 |
| 10 | 889 | 10000% | 1670 |
| 15 | 925 | – | – |
AT-TS-13/14 with contactor
- Two-or four-pole electrical protection by circuit-breaker may be needed for local circumstances, standards and regulations.
** Depending on the application, one-or three-pole circuit-breakers or contactors may be used.
*** Optional: Potential-free contact for connection to the BMS
United Kingdom
Tel 0800 969 013
salesthermalUK@nVent.com
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GmbH or its affiliates. All other trademarks are the property of their
respective owners. nVent reserves the right to change specifications without
notice.
RAYCHEM-IM-INST216-ATTS13-ML-2303