LOW PRESSURE SWITCH, BYPASS, AND LOCKOUT SEQUENCE

NOTE: The low pressure switch is an optional control and the bypass and lockout sequence are part of the standard compressor control module.

If the low pressure switch opens for more that 120 seconds, the compressor contactor will de-energize and go into a soft lockout. Regardless the state of the low pressure switch, the contactor will reenergize after the delay-on-make time delay has expired. If the low pressure switch remains open or opens again for longer than 120 seconds the unit will go into manual lockout condition and the alarm circuit will energize. Recycling the wall thermostat resets the manual lockout.

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ALARM OUTPUT

Alarm terminal is output connection for applications where alarm signal is desired. This terminal is powered whenever compressor is locked out due to HPC or LPC sequences as described.

NOTE: Both high and low pressure switch controls are inherently automatic reset devices. The high pressure switch and low pressure switch cut out and cut in settings are fixed by specific air conditioner or heat pump unit model. The lockout features, both soft and manual, are a function of the Compressor Control Module.

ADJUSTMENTS

ADJUSTABLE DELAY-ON-MAKE AND DELAY-ON-BREAK TIMER

The potentiometer is used to select Delay-on-Break time from 30 seconds to 5 minutes. Delay-on-Make (DOM) timing on power-up and after power interruptions is equal to 2 minutes plus 10% of Delay-on-Break (DOB) setting:

0.5 minute (30 seconds) DOB = 123 second DOM

1.0minute (60 seconds) DOB = 126 second DOM

2.0minute (120 seconds) DOB = 132 second DOM

3.0minute (160 seconds) DOB = 138 second DOM

4.0minute (240 seconds) DOB = 144 second DOM

5.0minute (300 seconds) DOB = 150 second DOM

Manual 2100-353 Page 18

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Bard P1224A2, P1124A3 installation instructions Adjustments, LOW Pressure SWITCH, BYPASS, and Lockout Sequence, Alarm Output
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P1124A3, P1224A2 specifications

The Bard P1224A2 and P1124A3 are advanced heating solutions designed to meet the demanding needs of commercial and residential spaces. These models reflect Bard's commitment to quality, efficiency, and innovation in the HVAC (Heating, Ventilation, and Air Conditioning) industry.

At the heart of the Bard P1224A2 and P1124A3 is their robust design, engineered for durability and long-lasting performance. The P1224A2 model is specifically tailored for applications requiring efficient heating and cooling across diverse environmental conditions. It boasts an exceptional heating capacity, making it suitable for moderate to large spaces, while also providing reliable climate control during the warmer months. The P1124A3, on the other hand, focuses on energy efficiency and versatility, making it an ideal choice for various settings including schools, offices, and healthcare facilities.

Both models utilize advanced technologies that enhance their operational efficiency. They incorporate high-performance compressors designed to optimize energy consumption without sacrificing output. The energy-efficient design of these units not only lowers operational costs but also contributes to reducing the overall carbon footprint, making them environmentally friendly options.

In terms of features, the Bard P1224A2 and P1124A3 are equipped with state-of-the-art controls that enable users to easily adjust settings for maximum comfort. The intuitive interface allows for precise temperature adjustments and scheduling options, ensuring a consistent and pleasant indoor environment. Additionally, these units are compatible with smart building systems, which can be integrated for remote monitoring and control.

Noise reduction technology is another key characteristic of these models. Their design minimizes operational noise, which is crucial for environments where sound levels are critical, such as educational institutions and medical facilities.

Lastly, both the P1224A2 and P1124A3 feature a compact footprint, ensuring flexible installation options even in tight spaces. Their rugged construction is built to withstand harsh weather conditions, providing peace of mind and reliability year-round.

In conclusion, the Bard P1224A2 and P1124A3 stand out in the HVAC market due to their exceptional efficiency, advanced technology, and user-friendly features. They represent a solid investment for anyone looking to improve climate control in their buildings while also prioritizing sustainability and cost-effectiveness.
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