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The Heatmiser DS1-L v2 is a manual dial room thermostat designed for homeowners seeking more precise temperature control than basic bi-metallic models. Its key benefit is the clear digital LCD display showing actual room temperature and a heat-on indicator, along with an easily adjustable switching differential. A potential caveat is the requirement for specific wiring, needing at least three wires (Live, Neutral, and Switch wire), so checking compatibility with your existing setup is advised.
| Colour | White |
|---|---|
| Model Part Number | DS1-L |
| Brand | Heatmiser |
It is compatible with most 230v central heating systems, including gas and electric boilers, provided there are at least three wires (Live, Neutral, Switch) available at the thermostat location. It has a volt-free 3A max output.
Simply turn the manual dial to your desired temperature setting. The digital display will show the current room temperature, and the heating will activate when the room temperature drops below your set point (considering the switching differential).
The switching differential determines how much the room temperature must drop below your set point before the heating turns on. A smaller differential (e.g., 0.5°C) means the heating cycles more often for tighter temperature control, while a larger differential (e.g., 3.5°C) means longer cycles and potentially wider temperature swings.
No, the Heatmiser DS1-L v2 is powered directly from the mains 230v supply and does not require batteries.
No, this is a manual dial thermostat and does not have programming capabilities. For programmable thermostats, you would need to look at other Heatmiser models.
The installed dimensions are approximately 92mm (Height) x 92mm (Width) x 14mm (Depth).
You need to ensure that there are at least three wires connected at your current thermostat location: one for Live (L), one for Neutral (N), and one for the Switched Live (SL or similar). If you are unsure, consult a qualified electrician or refer to the installation manual for guidance.
Verify that the main power to the heating system is switched on. Check that all wiring connections are secure according to the manual. Ensure the correct wires are connected to the Live, Neutral, and Switch terminals.
Check the heat-on indicator on the display. If it's off, ensure the target temperature set on the dial is higher than the current room temperature. Verify the wiring connections, especially the switch wire.
Check the main power supply to the thermostat. Ensure the connections are firm. If the issue persists, the thermostat may need replacement.
Ensure the thermostat is not located near heat sources (radiators, direct sunlight) or in draughts. Allow the thermostat time to acclimate to the room's ambient temperature after installation or significant environmental changes.
Setup:
Installation requires a basic understanding of electrical wiring. Ensure the power supply to your heating system is switched off at the mains before proceeding. The thermostat requires a connection for Live (L), Neutral (N), and the Switched Live (often labelled SL, 1, or similar) from your existing wiring. Consult the thermostat's manual for specific wiring diagrams. Mount the thermostat securely to the wall, ensuring it is at a suitable height for accurate room temperature readings, away from direct heat sources or drafts.
Compatibility:
This thermostat is designed for 230v systems and features a volt-free 3A max output, making it compatible with most standard gas or electric boiler central heating systems. It is crucial to verify that your existing wiring meets the minimum three-wire requirement (Live, Neutral, Switch). Older systems may not have a neutral wire connected at the thermostat location, rendering this unit incompatible without rewiring.
Care:
To clean the thermostat, use a soft, dry cloth. For stubborn marks, a slightly damp cloth can be used, but ensure no moisture enters the internal components. Avoid using abrasive cleaners or solvents. Periodically check that the thermostat remains securely mounted and that there are no obstructions around its vents.
