• Honeywell Pro 3000 Manual

The fastest way to see your thermostat model number is to look for it on your thermostat ID card. If you do not have a product ID card, the fastest way to find the model number is by removing the thermostat from the wall-plate. Depending on your model, the thermostat will separate from the wall-plate with moderate pressure or there might be small screws holding the device in place.

After removing the thermostat, flip it over and look for the model number, which is printed on the back of the case, starting with the group of letters mentioned above.If the thermostat is battery operated and the batteries are accessed from the front of the thermostat, please check the area around the batteries. You can also check this list of our to find your model number.If your thermostat has a mechanical clock, the model number is on a sticker on the horizontal surface above the clock. The FAN selection key has two or three positions: Auto and On and sometimes Circ (Circulate). The Auto position will allow the system fan to operate whenever the heating or cooling system is turned on by the thermostat.

The On position will turn the fan on to run continuously, regardless whether heating or cooling system is turned on by the thermostat or not. The Circ (Circulate) position if available will run the fan approximately 35% of the time, minus any time the fan will run with the heating or cooling system. Honeywell offers thermostats for both low voltage (24 volts) and line voltage (120 or 240 volts) systems. 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. You will need a line voltage thermostat. This type of voltage is common with electric baseboard heating. Regardless of the voltage, Honeywell strongly suggests that you turn off the power to the system at the furnace, at the fuse, or at the circuit breaker panel before installing or replacing a thermostat.

If you are unsure about your voltage, please contact a local heating and cooling contractor in your area for assistance. Your thermostat is designed to control temperature to +/- 1 F. How often your heat turns on and off depends on several factors including the type of heating system you have and load conditions (in other words, how hot or cold it is outside). A typical mid-efficiency forced air system will cycle about five times in an hour (5CPH) under typical load conditions. A typical high efficiency furnace or hot water system would cycle less than that. The installer can adjust the cycle rate setting on the thermostat. A heat pump uses the outdoor unit for both heating and cooling.

Often the heat pump also has some sort of backup or auxiliary heat for when it is cold outside. The backup or auxiliary heat could be electric heat strips or a fossil fuel furnace.

Thermostats that control heat pumps with backup or auxiliary heat typically have an Em Heat (Emergency heat) position. When the system switch is moved to the Em Ht.

Position, the auxiliary heat is activated on a call for heat. The compressor is disabled. If replacing a thermostat on a heat pump system, verify your thermostat is compatible.

The fastest way to see your thermostat model number is to look for it on your thermostat ID card. If you do not have a product ID card, the fastest way to find the model number is by removing the thermostat from the wall-plate. Depending on your model, the thermostat will separate from the wall-plate with moderate pressure or there might be small screws holding the device in place. After removing the thermostat, flip it over and look for the model number, which is printed on the back of the case, starting with the group of letters mentioned above.If the thermostat is battery operated and the batteries are accessed from the front of the thermostat, please check the area around the batteries.

Honeywell Pro 3000 Manual

You can also check this list of our to find your model number.If your thermostat has a mechanical clock, the model number is on a sticker on the horizontal surface above the clock. The FAN selection key has two or three positions: Auto and On and sometimes Circ (Circulate).

The Auto position will allow the system fan to operate whenever the heating or cooling system is turned on by the thermostat. The On position will turn the fan on to run continuously, regardless whether heating or cooling system is turned on by the thermostat or not.

The Circ (Circulate) position if available will run the fan approximately 35% of the time, minus any time the fan will run with the heating or cooling system. Honeywell offers thermostats for both low voltage (24 volts) and line voltage (120 or 240 volts) systems. 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. You will need a line voltage thermostat. This type of voltage is common with electric baseboard heating.

Regardless of the voltage, Honeywell strongly suggests that you turn off the power to the system at the furnace, at the fuse, or at the circuit breaker panel before installing or replacing a thermostat. If you are unsure about your voltage, please contact a local heating and cooling contractor in your area for assistance. Your thermostat is designed to control temperature to +/- 1 F. How often your heat turns on and off depends on several factors including the type of heating system you have and load conditions (in other words, how hot or cold it is outside). A typical mid-efficiency forced air system will cycle about five times in an hour (5CPH) under typical load conditions.

A typical high efficiency furnace or hot water system would cycle less than that. The installer can adjust the cycle rate setting on the thermostat. A heat pump uses the outdoor unit for both heating and cooling. Often the heat pump also has some sort of backup or auxiliary heat for when it is cold outside. The backup or auxiliary heat could be electric heat strips or a fossil fuel furnace.

Thermostats that control heat pumps with backup or auxiliary heat typically have an Em Heat (Emergency heat) position. When the system switch is moved to the Em Ht. Position, the auxiliary heat is activated on a call for heat.

The compressor is disabled. If replacing a thermostat on a heat pump system, verify your thermostat is compatible.