Field Wiring

NOTE: The relay furnished is a SPDT relay with silver cadmium oxide contacts, rated as follows:

48 va at 24 vac and .25 power factor

125 va at 115 vac and .25 power factor

125 va at 230 vac and .25 power factor

Fig. 56 Ð Wiring of Two-Stage Humidi®cation Control Relays

Field Wiring

NOTE: Connections for 39NX with integral PIC shown. See wiring diagrams in Fig. 9 and 12 for terminal connections in 39L control box and all remote-mount control boxes.

Fig. 57 Ð Wiring of the Duct

High Humidity Switch

The 24 vac power source(s) to both duct mounted and wall mounted relative humidity transmitters MUST be isolated. Connecting either side to a ground will per- manently damage the sensor.

The power for the relative humidity transmitters may be sourced from the valve 24 vac power source at wire no. 6 and 7 or at wire no. 4 and 5.

Connect the signal wires as follows: Secure one wire to the terminal labelled OUT 1 (located at the right of terminal block OUT). Secure the other wire to the negative signal output terminal (terminal adjacent to the terminal labelled OUT 1). Run the twisted pair of signal wires to the PIC control box. Observe all local code requirements.

Outdoor Relative Humidity Transmitter: Connect the posi- tive (1) wire to pin 31 of the processor module. Connect the negative (−) wire to pin 32 of the processor module.

Return Air or Space Relative Humidity Transmitter; Connect the positive (1) wire to pin 10 of the processor mod- ule. Connect the negative (−) wire to pin 11 of the processor module. See Fig. 61.

Fig. 58 Ð Field-Installed Relative

Humidity Transmitters

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Carrier 39L specifications Wiring of Two-Stage Humidication Control Relays

39L specifications

The Carrier 39L is a cutting-edge air conditioning unit designed for both residential and commercial applications, providing exceptional cooling and heating performance. Equipped with advanced technologies, this system ensures optimal climate control while maintaining energy efficiency.

One of the standout features of the Carrier 39L is its inverter technology. This innovation allows the system to adjust its compressor speed based on the ambient temperature, which results in a significant reduction in energy consumption. By operating at varying capacities rather than a fixed output, the 39L can maintain a consistent temperature, enhancing comfort while lowering electricity bills.

The Carrier 39L also includes a high-efficiency air filtration system, designed to capture dust, allergens, and other airborne particles. This not only improves indoor air quality but also promotes a healthier living environment. The filtration system is complemented by anti-bacterial treatment, ensuring that the air circulated within your space is both clean and refreshing.

In terms of design, the Carrier 39L boasts a sleek and compact form factor, making it easy to integrate into various settings, from homes to offices. Its quiet operation is another notable feature, as it minimizes noise levels, allowing occupants to enjoy a serene atmosphere without disruptive sound.

Further enhancing convenience, the Carrier 39L comes equipped with smart connectivity options. Users can control the unit remotely via a smartphone app, making it easy to adjust settings, program schedules, and monitor energy usage from anywhere. This feature not only improves user experience but also supports energy-saving practices.

Durability is also a key characteristic of the Carrier 39L. Constructed with high-quality materials and coated with corrosion-resistant treatments, the unit is built to withstand various environmental conditions. This ensures long-lasting performance and reduces the need for frequent maintenance.

Overall, the Carrier 39L is a versatile, efficient, and user-friendly air conditioning solution. Its blend of advanced technologies, energy-saving capabilities, and robust design makes it an ideal choice for those seeking reliable climate control in their spaces. Whether for residential comfort or commercial necessity, the Carrier 39L stands out as a leader in modern air conditioning.