1. Introducció
This manual provides essential information for the safe installation, operation, and maintenance of your Stelpro ST402NPFF Non-Programmable Electronic Thermostat. This thermostat is designed for precise temperature control of fan heaters and fan-forced units, offering a comfortable environment with energy efficiency.
Les característiques clau inclouen:
- Control precís de la temperatura: Maintains ambient temperature within ±1°F increments, ensuring your living space remains at your ideal temperature setting.
- Mode ECO: One-click temperature setback for energy efficiency.
- Heat Boost Feature: Quickly raises the temperature for immediate comfort.
- Disseny segur i durador: Features a sealed housing and sturdy S3 mounting plate for secure installation.
- Dimensions compactes: Measures 4.94 in. wide, 4.94 in. high, and 1.38 in. deep.
Figura 1: Frontal view of the Stelpro ST402NPFF Thermostat.
2. Informació important de seguretat
WARNING: Risk of electric shock. This product operates on high voltage (240V). Installation must be performed by a qualified electrician in accordance with all national and local electrical codes.
- Desconnecteu sempre l'alimentació del quadre elèctric principal abans d'instal·lar o realitzar qualsevol manteniment del termòstat.
- Do not install the thermostat with wet hands or while standing on wet surfaces.
- Assegureu-vos que totes les connexions del cablejat estiguin segures i aïllades correctament.
- Aquest termòstat està dissenyat només per a ús interior.
- Do not use this thermostat for purposes other than controlling electric fan heaters or fan-forced units.
3. Contingut del paquet
Verifiqueu que tots els components siguin presents abans de començar la instal·lació:
- Stelpro ST402NPFF Electronic Thermostat
- S3 Mounting Plate
- Wire Nuts (typically included)
- Guia d'instal·lació (aquest document)
4. Configuració i instal·lació
Seguiu aquests passos per a una instal·lació correcta:
- Desconnecteu l'alimentació: Turn off the power to the heating system at the main electrical panel before starting any work.
- Lloc de muntatge: Install the thermostat on a standard electrical junction box. Choose an interior wall, about 5 feet (1.5 meters) from the floor, away from windows, doors, or heat sources that could affect temperature readings.
- Col·loqueu la placa de muntatge: Secure the S3 mounting plate to the electrical junction box using the provided screws. Ensure it is level and firmly attached.
Figure 2: S3 Mounting Plate for secure installation.
- Cablejat: This thermostat requires a three-wire electrical connection. Connect the thermostat wires to your heating system and power supply wires using wire nuts. Refer to the wiring diagram below. Ensure all connections are tight and insulated.
Figure 3: Three-wire electrical connection diagram.
- Connecteu el termòstat: Carefully align the thermostat with the mounting plate and push it firmly until it clicks into place.
- Restaura l'alimentació: Once installation is complete, restore power at the main electrical panel.
5. Instruccions de funcionament
The Stelpro ST402NPFF is a non-programmable thermostat designed for straightforward temperature control.
5.1 Configuració de la temperatura
- The digital display shows the current ambient temperature.
- Use the left and right touch controls (arrows) on the front panel to adjust the desired temperature setpoint. The display will show the new setpoint as you adjust it.
- The thermostat will maintain the set temperature within ±1°F (or ±0.5°C) of your setting.
- The operating range is 41°F to 86°F (5°C to 30°C).
5.2 Mode ECO
Press the ECO button (leaf icon) to activate the energy-saving mode. This mode sets the temperature to a predefined energy-efficient level, helping to reduce power consumption.
5.3 Heat Boost Feature
Activate the Heat Boost feature for a temporary increase in heating output. This is useful for quickly warming a room. Consult the full product documentation for specific activation methods, as this may vary slightly.
5.4 Retroil·luminació de la pantalla
The display features a backlight for improved visibility, especially in low-light conditions. The backlight typically activates when a button is pressed and turns off after a short period of inactivity.
Figure 4: Thermostat front panel with touch controls.
6. Manteniment
The Stelpro ST402NPFF thermostat requires minimal maintenance.
- Neteja: Netegeu periòdicament l'exterior del termòstat amb un drap suau i sec.amp drap. No utilitzeu netejadors abrasius, dissolvents ni esprais químics, ja que poden danyar l'acabat o els components interns.
- Sense peces reparables per l'usuari: There are no user-serviceable parts inside the thermostat. Do not attempt to open or repair the unit yourself. Refer all servicing to qualified personnel.
7. Solució De Problemes
If you experience issues with your thermostat, consult the following table:
| Problema | Causa possible | Solució |
|---|---|---|
| La pantalla del termòstat està en blanc. | No hi ha corrent al termostat. | Check the circuit breaker at the main electrical panel. Ensure all wiring connections are secure. |
| El sistema de calefacció no respon. | Incorrect wiring; thermostat set too low; circuit breaker tripped. | Verify wiring connections (refer to Section 4). Increase the set temperature. Check and reset the circuit breaker. |
| Temperature readings seem inaccurate or thermostat cuts off prematurely during long runs. | Internal heat from the TRIAC affecting the temperature sensor. | This is a known characteristic during extended heating cycles. The thermostat will still achieve the target temperature, though it may take slightly longer with brief pauses. Ensure the thermostat is not exposed to direct heat sources. |
| Els controls tàctils no responen. | Error temporal de programari; pantalla bruta. | Try gently cleaning the screen. If unresponsive, briefly cycle power to the thermostat at the circuit breaker. |
8. Especificacions
| Característica | Detall |
|---|---|
| Marca | Stelpro |
| Nom del model | ST402NPFF |
| Dimensions del producte | 1.38 "P x 4.94" W x 4.94" H |
| Color | Blanc |
| Voltage | 240 Volts |
| Wattage | 4000.0 W |
| Forma | Plaçada |
| Tipus de muntatge | Muntatge de paret |
| Llum de fons | Sí |
| Interval de temperatura | De 41 °F a 86 °F (de 5 °C a 30 °C) |
| Precisió de la temperatura | ± 1 ° F (± 0.5 ° C) |
| UPC | 626296598955 |
| Pes de l'article | 14.1 unces |
9. Garantia
The Stelpro ST402NPFF Electronic Thermostat comes with a Garantia limitada d'5 any against defects in material and workmanship under normal use and service. Please retain your proof of purchase for warranty claims. For full warranty terms and conditions, please refer to the official Stelpro weblloc o contacteu amb el servei d'atenció al client.
Figure 5: Superior Technology features including 5-year warranty.
10. Atenció al client
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Stelpro customer support:
- Weblloc: Visita l'oficial Botiga Stelpro a Amazon or the main Stelpro corporate weblloc web per obtenir informació de contacte i recursos addicionals.
- Telèfon/Correu electrònic: Refer to the packaging or Stelpro's official weblloc web per obtenir les dades de contacte més actualitzades.
Please have your model number (ST402NPFF) and purchase date available when contacting support.
