Essential Guide to Honeywell Home Programmable RTHZ3OO/RTH2Z1 Thermostat
The Honeywell Home RTHZ300/RTH21 Programmable Thermostat Series provides a user-friendly interface for controlling your home’s heating and cooling systems. It is designed to enhance comfort by allowing users to program temperature settings according to individual needs and schedules. This Owner’s Manual is intended to equip you with the necessary knowledge to install and operate your device efficiently.
System Compatibility
The RTHZ300/RTH21 series thermostat is suitable for several types of heating and cooling systems. These include:
- Gas, oil, or electric furnaces
- Central air conditioning units
- Hot water systems, with or without pumps
- Millivolt systems
- Central heating and cooling systems
- Heat pumps without auxiliary/backup heat
Note: This thermostat is not designed for use with heat pumps that have backup heating or on multi-stage systems.
Mercury Recycling and Compressor Damage Prevention
The RTHZ300/RTH21 series does not contain mercury, although it may replace units that do. Users are informed about responsible disposal and recycling options for mercury-containing thermostats through partnerships with the Thermostat Recycling Corporation in the United States and Switch the Stat in Canada. Additionally, to avert possible damage to the air conditioning compressor, it is advised not to run the air conditioner if the outside temperature falls below 50°F (10°C).
Customer Support
Honeywell Home offers comprehensive support for their programmable thermostats. For assistance with wiring or other inquiries, owners are encouraged to visit Honeywell Home’s support page online before returning their product to the store. In case of reaching out for customer assistance, having the model number and date code on hand, which can be found on the back of the thermostat, will expedite the service process.
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