What is Satchwell thermostat?

Satchwell TLM Room Thermostats accurately control space température in conjunction with suitable mains voltage equipmcnt up to a maximum rating of 20 amp. Physical Characteristics. The TLM range complies with the test house requirements in most countries, including BS 3955.

What voltage is a thermostat UK?

Normally the thermostat needs 240 VAC neutral, 240VAC live (from timer) and switched 240V AC live (to zone valve). Some traditional-type thermostats include a heating anticipator (a resistor across switched-live & neutral that warms the thermostat).

How do you wire a 3 wire thermostat?

Here is how to wire a 3 wire thermostat:

  1. Remove the control panel of the old thermostat.
  2. Take a picture of the 3 wires. …
  3. Remove the motherboard of the old thermostat completely, and secure the wires. …
  4. Put the new motherboard in the place of the old one, and pull the wires through the 3 wire thermostat.

How do I change my old thermostat to digital?

Quote from the video:
Quote from Youtube video: All right once you cut the power you're going to go ahead and pop off the front of your old thermostat here. And you'll see there's a bunch of different colored wires here.

How do I replace an old thermostat UK?

How do I replace an old thermostat?

  1. Disconnect your thermostat and boiler from the mains electricity supply.
  2. Remove your current thermostat, labelling your wires with the terminals they were connected to.
  3. Fit the new thermostat, connecting the correct wires to the correct terminals as before.

How do I replace an old thermostat?

How to Replace an Analog Thermostat

  1. Step 1: Carefully Select New Thermostat. …
  2. Step 2: Shut Off Power to The Furnace. …
  3. Step 3: Remove the Faceplate From the Current Thermostat. …
  4. Step 4: Label the Wires. …
  5. Step 5: Disconnect the Wires and Remove the Wall Plate. …
  6. Step 6: Mounting the New Thermostat. …
  7. Step 7: Rewiring.

How do you replace a old 2 wire thermostat?

Quote from the video:
Quote from Youtube video: So the first step is popping the old thermostat off generally they just pop off like so you can see this one has no batteries in it it's a two wire system.

Can you replace an old thermostat with a nest?

Google Nest thermostats are designed to work with most 24 V systems, even older systems. They work with all common fuel types including natural gas, oil, and electricity.

How hard is it to install a digital thermostat?

Don’t hesitate to install a digital thermostat because you think the task is difficult. In most cases, it is quite simple to do. Don’t hesitate to ask an employee at a home improvement or hardware store if you have any questions when selecting a digital thermostat.

How much does it cost to rewire a thermostat?

Thermostat Installation Cost Factors

Item Average Cost
Labor $65 – $200
Drywall Repair $75 – $150
Wiring Repair $6 – $10 per foot
Moving Unit $135 – $450

How do I change my analog thermostat to Digital UK?

Quote from the video:
Quote from Youtube video: So promisor was that I have two wires in here that connected to the analog. So what I'm going to do is unscrew these caps. And detach this wire from the main wire here on votes. I'll do both the caps.

Can I just replace my thermostat myself?

It is possible to save some money by installing or replacing your thermostat yourself, but you will need: Basic electrical knowledge. A general understanding of the type of equipment being used.

What voltage does a thermostat use?

24 volts

The most common type of voltage from a central heating and/or cooling system is 24 volts (24Vac). The old thermostat may say somewhere on the thermostat that it is for 24 volt (24Vac) or maximum 30 volts (30Vac). If you see 120 Vac or 240 Vac on the thermostat, a low voltage thermostat will NOT work with your system.

How do I know what voltage my thermostat is?

Quote from the video:
Quote from Youtube video: Usually. There will be four wires if it's a low voltage system there will be smaller wires like 18 to 24 gauge. And usually there will be two wires for your heating system.

Is my thermostat 120 or 240?

You can also look into the gang box of your existing thermostat. If you have black and white wires you likely have 120V. If you have black and red wires you likely have 240V.

Are thermostat wires low voltage?

A low voltage thermostat is a direct wired heater and air conditioning control that is found in most homes and operate under 30V. These types of thermostats are popular because they use less power than a line voltage thermostat, averaging around 24 Volts.

How do you wire a line voltage thermostat?


  1. Attach a Wire Nut to Ground and White Wires. …
  2. Wire-Nut One Hot Wire to Bypass the Thermostat. …
  3. Attach the Line and Load Black Wire to Thermostat. …
  4. Push the Green, White, and Red Wires Into the Box. …
  5. Line Up the Screws on the Box. …
  6. Screw the Thermostat Into the Box. …
  7. Replace the Thermostat Faceplate.

How do I change my high voltage thermostat to low voltage?

The basic approach is to buy a switching relay that is operated by the low-voltage thermostat and that in turn turns on the 120VAC or 240VAC heaters. You replace the line voltage thermostat with the switching relay, then add low voltage wire from a transformer to power the Nest or other low-voltage thermostat.

What is the advantage of using a line voltage thermostat over a low voltage thermostat?

Line voltage thermostats deliver electricity directly to heaters. So, they handle more power than low voltage thermostats that control central HVAC systems like a gas furnace. They work by measuring room temperature and controlling power delivery to maintain a setpoint (the temperature you set your thermostat).

How do you wire a low voltage thermostat?

Quote from the video:
Quote from Youtube video: All right and snug down the other one where you have this connector at which connects it from R to R six you want to have a decent thermostat.

What is the difference between low voltage and line voltage?

It is standard in lighting, while “low voltage (12v or 24v) lighting” is used less commonly. Line voltage lighting systems typically use 120v or 277v to supply power to lighting fixtures. Line voltage lighting systems do not require transformers to power lighting fixtures in many different applications.