signal shall be considered valid if the compressor output is energized and the defrost signal has been active for less than 15 consecutive minutes. Any defrost signal present for longer than 15 minutes shall be considered invalid.

Heat pump/fan coil and hybrid heat systems shall use this input to:

SDetect that defrost is in progress and energize the auxiliary heat to provide homeowner comfort during the defrost cycle

SAllow a defrost cycle to run to completion regardless of the system demand

Three-Minute Minimum on Time

In normal operation, when a stage turns on, it will not turn off for a minimum of 3 minutes. If the setpoint is changed, this timer is canceled, allowing the equipment to turn off immediately when the demand is removed.

Heat/Cool Setpoints (Desired Temperature)

A minimum difference of 1_ and maximum of 6_ is enforced between heating and cooling desired temperatures. This is done by allowing 1 setting to “push” the other, to maintain this difference. This difference is adjustable via Configuration Option 11.

Equipment On Indicators

When cooling equipment is on, a COOL ON icon is displayed. While cooling equipment operation is delayed by the time guard or cycle timer, COOL ON will flash. The same is true for HEAT ON icon.

During second stage compressor operation a “2” will be displayed with the HEAT ON or COOL ON icon. This is displayed when the Thermidistat Control is configured as H2, A2, or h2.

When the W is energized in a heat pump or Hybrid Heat system, the “auxiliary heat on” icon will be displayed.

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Bryant A07049, A07048 Equipment On Indicators, Three-Minute Minimum on Time, Heat/Cool Setpoints Desired Temperature

A07048, A07049 specifications

The Bryant A07049 and A07048 are notable entries in the line of ductless mini-split systems designed for efficient heating and cooling. These models are well-regarded for their robust performance and innovative features that cater to both residential and light commercial applications.

One of the main features of the Bryant A07049 and A07048 is their advanced inverter technology. This technology allows the units to modulate their compressor speed, resulting in a more consistent indoor temperature. By adjusting cooling or heating output based on real-time demand, the units enhance energy efficiency while providing quiet operation and improved comfort.

The cooling capacity of the Bryant A07049 is rated at 7,000 BTUs, making it suitable for medium-sized rooms, whereas the A07048 has a slightly lower capacity, ideal for smaller spaces. Both models excel in providing rapid temperature control, allowing users to enjoy their desired environment swiftly. The quiet operation is a significant advantage, with sound levels as low as 24 decibels, making them perfect for bedrooms, offices, or other noise-sensitive environments.

Installation flexibility is another remarkable characteristic of the Bryant A07049 and A07048. Their ductless design eliminates the need for extensive ductwork, simplifying installation processes. Both models come with easy-mount wall brackets, and the refrigerant lines can be run through a small, discreet opening in the wall, maintaining the aesthetic appeal of the living space.

Energy efficiency is a standout feature of these models, boasting high Seasonal Energy Efficiency Ratio (SEER) ratings. This high-efficiency operation not only reduces energy bills but also minimizes environmental impact. Additionally, both models include a built-in programmable thermostat that allows users to schedule their heating and cooling preferences, enhancing convenience and further optimizing energy use.

The Bryant A07049 and A07048 also feature a multi-stage filtration system. This advanced filtration captures dust, allergens, and other particulate matter, promoting cleaner air circulation which is particularly beneficial for those with allergies or respiratory conditions.

In summary, the Bryant A07049 and A07048 mini-split systems deliver versatility, energy efficiency, and user-friendly operation. Their modern design, quiet performance, and advanced technologies make them excellent choices for individuals or businesses looking to enhance comfort while being mindful of energy consumption. Whether used for supplementary heating or cooling, these units are engineered to meet a variety of climate control needs effectively.