Are you having trouble with your 859M room thermostat? Not to worry, we’ve compiled a comprehensive guide on how to wire an 859M thermostat. In this article, we’ll walk you through the different wires involved, what they do, and how to connect them to your thermostat. So, let’s get started!
What is an 859M Room Thermostat?
The 859M room thermostat is a device that is used to control the temperature of a room. This type of thermostat is commonly used in residential and commercial buildings. The 859M is a mechanical thermostat that operates based on the room temperature. When the room temperature drops below the set temperature, the thermostat will turn on the heating system.
The 859M room thermostat is designed to be easy to use and install. It comes with a wiring diagram that guides you on how to connect the wires to your thermostat. However, if you’re unfamiliar with wiring, it’s best to seek the help of a qualified electrician.
Wiring an 859M Room Thermostat
The 859M room thermostat requires five wires to operate. These wires are:
| Wire Color | Function |
|---|---|
| Blue | Neutral |
| Yellow | Call for heat |
| Red | Live |
| Green | Earth |
| Black | Switch live |
Step-by-Step Guide on Wiring an 859M Room Thermostat
Before you start, make sure the power supply is turned off. Here’s a step-by-step guide on how to wire an 859M room thermostat:
Step 1: Connect the Neutral Wire (Blue)
The first wire to connect is the neutral wire (blue). This wire is connected to the ‘N’ terminal of the thermostat. It’s important to note that the neutral wire is not used to power the thermostat, but to complete the circuit.
Step 2: Connect the Call for Heat Wire (Yellow)
The call for heat wire (yellow) is connected to the ‘3’ terminal of the thermostat. This wire is used to tell the heating system to turn on when the room temperature drops below the set temperature.
Step 3: Connect the Live Wire (Red)
The live wire (red) is connected to the ‘L’ terminal of the thermostat. This wire supplies power to the thermostat.
Step 4: Connect the Earth Wire (Green)
The earth wire (green) is connected to the ‘E’ terminal of the thermostat. This wire is used for safety purposes and ensures that any electrical faults are directed to earth.
Step 5: Connect the Switch Live Wire (Black)
The switch live wire (black) is connected to the ‘1’ and ‘2’ terminals of the thermostat. When the thermostat turns on, it sends power to the heating system through these wires.
FAQ
Q: What happens if I wire my 859M thermostat incorrectly?
A: If you wire your 859M thermostat incorrectly, it could result in electrical shock or damage to the thermostat. It’s important to follow the wiring diagram that comes with your thermostat, and seek the help of a qualified electrician if you’re unsure.
Q: Can I use my 859M thermostat with any heating system?
A: The 859M room thermostat is compatible with most heating systems. However, it’s important to check the manufacturer’s specifications to ensure compatibility.
Q: What if my 859M thermostat isn’t working even after wiring it correctly?
A: If your 859M thermostat isn’t working even after wiring it correctly, it could be due to a faulty thermostat. In this case, you’ll need to replace the thermostat.
Q: Can I install my 859M thermostat myself?
A: While it’s possible to install your 859M thermostat yourself, we recommend seeking the help of a qualified electrician. This will ensure that the wiring is done correctly and safely.
Hopefully, this guide has helped you understand how to wire an 859M room thermostat. Remember to always follow the manufacturer’s instructions and seek the help of a qualified electrician if you’re unsure.
