Replace the thermostat without even Denver HVAC technician can be quite shocking if you do not like the wiring correctly. Inside the thermostat there are several terminals, the need to connect with the right cables. The R terminal is the power thermostat. R means red, in case of artisans Colorado Heating cables are the red to the terminal. This power comes from the transformer. The transformer is normally in the condensing unit or air handler split system.Because they have the power, it is a good idea to kill the power to both the condenser and the air handler before working on the thermostat.
The RC terminal is the power for cooling. Some HVAC systems have two large transformers, one for cooling and heat. In this case, the power system to the terminal ac thermostat. A jumper between RC and RH can be installed for a single transformer heating and cooling. The RC terminal is also red.
The RHTerminal is warming. This is also red and the RC can be skipped.
The Y-terminal is yellow and goes to the compressor relay. Some HVAC Specialists Denver with a terminal strip on the control board air treatment, the bonded joint does not need. Y2 is blue and is usually code for a cooler second stage. If you have two compressors, two should work the thermostat itself. Heating Denver and most airlines do not need one to two cooling stagesCompanies.
W is the terminal heating. W is for white-terminal. This should be directly to any heat source, be it a furnace or boiler. W2 is the second stage of heat and is usually brown. This is for the gas-cooker with low and high settings. Heat pumps use W2 additional heat.
G is for green, and goes to the blower relay inside.
C stands for common and not a specific color, although black is often seen. Consuming digital thermostats, electricity,common line is needed to close the circuit to 24 volts.
Orange "O" and "B" Blue is for heat pumps. Rheem Ruud heat pumps use the terminal B to the cooling valve. Other producers use the HVAC terminal O. Trane, Lennox, Goodman, Ducane, Heil, Carrier, Fedders, Amana, Janitrol and are generally up to the terminal O of HVAC contractors in Denver addiction.
It is equipped for emergencies. This has no color standards, but should the heater relay or e-connect terminalEdge strips.
S1 and S2 are sensors for outdoor air. This has no color standards, but must use a shielded cable to avoid interference and reduce the possibility of damage to the waters outside. Warning: These colors are the default values. The person wiring thermostat can be used non-conventional color coding.
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