Start UP CONT’D | Bard CH3S1, CH4S1, CH5S1 specification

START UP CONT’D.

SAFETY PRACTICES:

1.Never mix R-410A with other refrigerants.

2.Use gloves and safety glasses, Polyol Ester oils can be irritating to the skin, and liquid refrigerant will freeze the skin.

3.Never use air and R-410A to leak check; the mixture may become flammable.

4.Do not inhale R-410A – the vapor attacks the nervous system, creating dizziness, loss of coordination and slurred speech. Cardiac irregularities, unconsciousness and ultimate death can result from breathing this concentration.

5.Do not burn R-410A. This decomposition produces hazardous vapors. Evacuate the area if exposed.

6.Use only cylinders rated DOT4BA/4BW 400.

7.Never fill cylinders over 80% of total capacity.

8.Store cylinders in a cool area, out of direct sunlight.

9.Never heat cylinders above 125°F.

10.Never trap liquid R-410A in manifold sets, gauge lines or cylinders. R-410A expands significantly at warmer temperatures. Once a cylinder or line is full of liquid, any further rise in temperature will cause it to burst.

IMPORTANT INSTALLER NOTE

For improved start-up performance, wash the indoor coil with a dish washing detergent.

PRESSURE SERVICE PORTS

R-410A requires high pressure hose connections and gauges. High and Low pressure service ports are installed on all units so that the system operating pressures can be observed. Pressure tables can be found later in the manual covering all models on both cooling and heating cycles. It is imperative to match the correct pressure table to the unit by model number.

HIGH & LOW PRESSURE SWITCH

All models are supplied with a remote reset high and low pressure switch. If tripped, this pressure switch may be reset by turning the thermostat off then back on again.

High/Low Pressure control provides protection for the compressor. In the event system pressures go above 540 PSI or below 35 PSI, in either cooling or heating mode, the compressor will be stopped. This will activate the “L” terminal of the low voltage terminal strip. This terminal can be used for remote indication of a pressure lockout. The lockout circuit will hold compressor off line. When the system problem is corrected, the unit operation can be restored by turning the main power supply off and then back on, or reset the room thermostat. The low pressure control has a bypass to eliminate nuisance lockout on cold start up.

The bypass timer should be set to 200 seconds, and this is to assure there is no nuisance tripping of the low- pressure control during startup in heating mode under cold weather conditions. See Figure 10:

FIGURE 11

LOW PRESSURE CONTROL BYPASS TIMER

THREE PHASE SCROLL COMPRESSOR START UP INFORMATION

Scroll compressors, like several other types of compressors, will only compress in one rotational direction. Direction of rotation is not an issue with single phase compressors since they will always start and run in the proper direction.

However, three phase compressors will rotate in either direction depending upon phasing of the power. Since there is a 50-50 chance of connecting power in such a way as to cause rotation in the reverse direction, verification of proper rotation must be made. All three phase units incorporate a phase monitor to ensure proper field wiring. See the “Phase Monitor” section later in this manual.

Verification of proper rotation must be made any time a compressor is changed or rewired. If improper rotation is corrected at this time there will be no negative impact on the durability of the compressor. However, reverse operation for over one hour may have a negative impact on the bearing due to oil pump out.

NOTE: If compressor is allowed to run in reverse rotation for several minutes, the compressor’s internal protector will trip.

All three phase ZR3 compressors are wired identically internally. As a result, once the correct phasing is determined for a specific system or installation, connecting properly phased power leads to the same Fusite terminal should maintain proper rotation direction.

Manual	2100-455A
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CH3S1, CH5S1, CH4S1 specifications

Bard CH3S1, CH4S1, and CH5S1 represent a formidable trio of advanced technologies in the field of AI-driven natural language processing. These models are designed to facilitate seamless communication, enhance productivity, and deliver personalized experiences across various applications.

One of the main features of the Bard CH series is its ability to understand and generate human-like text. This is achieved through deep learning algorithms that analyze vast datasets to learn language patterns, context, and nuances. The CH3S1 model, for instance, excels in basic conversational tasks, making it suitable for customer support, virtual assistants, and simple content generation. Its training allows it to respond efficiently to user inputs while maintaining clarity and engagement.

As we progress to the CH4S1 model, we observe significant enhancements in contextual understanding. This model can handle more complex conversations, making it adept at tasks requiring greater cognitive processing, such as technical support and nuanced dialogue-based applications. The increased parameter count and refined training methods contribute to its ability to grasp intricate sentence structures and varied linguistic styles, leading to more coherent and relevant responses.

Building upon the capabilities of its predecessors, the CH5S1 model represents the pinnacle of the Bard CH series. It integrates advanced features such as multi-modal processing, allowing it to work with text, images, and even sound. This model is engineered to perform in more specialized fields, such as healthcare, legal, and creative writing, where precise language and context are critical. The CH5S1 leverages feedback loops from real-time interactions to continuously improve its understanding and output, making it not only a tool for communication but also an intelligent partner for businesses and individuals alike.

In terms of technology, all three models utilize transformer architecture, which has proven effective in tasks requiring attention and context retention. They also implement reinforcement learning techniques to adapt and refine their models based on user engagement data. Furthermore, security and data privacy are prioritized, with strict adherence to ethical AI guidelines to ensure user trust.

Overall, the Bard CH series signifies a leap forward in artificial intelligence, combining advanced linguistic capabilities with a user-centric approach, thus redefining how we interact with machines and enhancing our digital experiences.