Access Authorization (User Type 3.6)

Menu Option 48 allows access to be authorized for engineers for system programming and for managers in order to add/delete/change all user codes.

1 = Engineer

The engineer code is assigned programmed as dual by default. This prevents the engineer from accessing engineer mode unless authorized to do so by a valid code. To gain access to the engineer menu a type 3.6 user must enter their code, and enable the EngineerAccess option. This provides a five minute period during which a single entry of the engineer code provides access to engineering mode without causing a tamper alarm. Once the engineer mode has been accessed, there is no time limit on the access period.

If the Engineer Mode option has not been enabled, or the code is not entered within the five minute period, then the Engineer code is invalid and has no effect.

If the PIN is programmed without the #, the Engineer Access option does not require to be enabled to allow the engineer to gain access to engineer mode. The engineer code requires to be entered twice. The first entry activates a tamper alarm which is cancelled by the second entry.

NOTE: Dual entry of the engineer code in a system requiring user authorization does not give access to engineer mode.

2 = Manager

This option allows type 3.6 manager codes to be enabled for user code adding/deleting/changing. This option can only be enabled by the au- thorization code. However, this option is not used by default. Manager codes are always authorized. It can be enabled, if required, to comply with standards in certain regions. An authorization code must be as- signed in Menu 42 Codes, before the function is enabled.

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Honeywell 3-520C, 3-48C, 3-144C manual Access Authorization User Type, = Engineer, = Manager
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3-520, 3-48C, 3-144, 3-520C, 3-144C specifications

Honeywell has established itself as a leader in electronic control and automation, and their series of products, including the 3-520C, 3-520, 3-144C, 3-48C, and 3-144, exemplify the company's commitment to innovation and quality. These devices are primarily designed for use in climate control and industrial automation applications, providing reliable operation and advanced features.

The Honeywell 3-520C and 3-520 are versatile controllers known for their ability to manage complex HVAC systems effectively. They feature intuitive programming capabilities and user-friendly interfaces, which make them suitable for both novice and experienced users. The 3-520 model has a comprehensive set of inputs and outputs that allow for the precise control of various HVAC components. One of its key technologies is the use of PID control algorithms, which ensure optimal temperature regulation by continuously adjusting based on real-time feedback.

The Honeywell 3-144C and 3-144 models provide enhanced control solutions with a focus on energy efficiency and performance. The 3-144C boasts advanced diagnostics and monitoring capabilities that facilitate quick troubleshooting, while its built-in analytics tools help users optimize energy consumption. Both models support various communication protocols, enabling seamless integration with existing building management systems.

Another notable product in this lineup is the Honeywell 3-48C, which stands out for its compact design and robust performance. This model is particularly well-suited for smaller systems where space is limited. Despite its size, the 3-48C does not compromise on features; it offers precise temperature control, programmable settings, and compatibility with a variety of HVAC components.

The characteristics of these Honeywell controllers include durable construction, ensuring long service life even in demanding environments. They are designed to operate efficiently across a broad range of temperatures and conditions. Additionally, the user-friendly interface and programmable settings allow for tailored control strategies, improving overall system performance.

Overall, Honeywell’s 3-520C, 3-520, 3-144C, 3-48C, and 3-144 models highlight the company’s dedication to providing advanced technological solutions that cater to modern HVAC needs, prioritizing efficiency, reliability, and ease of use. As the industry continues to evolve, these controllers remain relevant by incorporating the latest in control technology, making them excellent choices for climate control applications.
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