![]() ![]() For a smart 'stat you will want to make sure there is a 5th wire, as smart 'stats need local power and will task the spare wire to that. If it's a 24V system the thermostat may pop off the backing plate quite easily, and you will spot light red, white, green and yellow wires with terminals marked R or Rh and Rc, W, G, Y, and others. The vast majority of smart thermostats are made for 24V systems. This works with all types of furnace (electric via a relay gas via a magnet valve) and is well-suited to control both a furnace and A/C from one thermostat. It is then handled in light 4-8 wire thermostat cable up to the thermostat and out to the A/C unit. 24-volt thermostat - this uses a small 24 volt transformer in the furnace to make a low voltage pilot signal.I've never seen one that could switch an A/C unit - also they must be mounted on standard 1-gang junction boxes, so they have that form factor (like a light switch or outlet). Switches the actual power in the thermostat. Line Voltage (240V) thermostat - switches pure electric heaters only.Production of electrical switchboards and control panels is from our own factory with full. Millivolt thermostat - switches sub-1-volt signal coming from a thermocouple on a gas pilot light. We are specialised in control and monitoring systems for HVAC.To place a smart thermostat, you need to identify which of three classes of thermostat you have. The compact design not only reduces footprint but also allows much easier installation. ![]() Legally the landlord can make claim to any appliance you install on the building. Features The HVAC control panel is a combination motor starter designed to meet the requirements of Division 15 specifications and has many features that meet the unique needs of the HVAC market. In a rental unit you need permission from the landlord to do any work. ![]()
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