SWEAT/ FLARE

ADAPTER

TEFLON

SEAL

PISTON

PISTON BODY

LIQUID SERVICE VALVE

A97556

Fig. 8—Liquid Service Valve with Sweat Adapter Tube

DEEP VACUUM METHOD

The deep vacuum method requires a vacuum pump capable of pulling a vacuum of 500 microns and a vacuum gage capable of accurately measuring this vacuum depth. The deep vacuum method is the most positive way of assuring a system is free of air and liquid water. (See Fig. 10.)

TRIPLE EVACUATION METHOD

The triple evacuation method should only be used when vacuum pump is only capable of pumping down to 28 in. of mercury and system does not contain any liquid water. Refer to Fig. 11 and proceed as follows:

1.Pump system down to 28 in. of mercury and allow pump to continue operating for an additional 15 minutes.

2.Close service valves and shut off vacuum pump.

3.Connect a nitrogen cylinder and regulator to system and open until system pressure is 2 psig.

4.Close service valve and allow system to stand for 1 hr. During this time, dry nitrogen will be able to diffuse throughout the system, absorbing moisture.

5.Repeat this procedure as indicated in Fig. 11. System will then contain minimal amounts of contaminants and water vapor.

LIQUID-LINE

FILTER-DRIER

LIQUID

 

 

 

SERVICE

 

 

 

VALVE

R

-41

0A

A97555

Fig. 9—Filter Drier with Sweat Adapter Tube and Liquid

Tube

—6—

5000

 

 

 

 

 

 

 

4500

 

 

 

 

 

 

 

4000

 

 

 

 

 

LEAK IN

3500

 

 

 

 

 

 

 

 

 

 

SYSTEM

3000

 

 

 

 

 

 

 

 

 

 

 

 

2500

 

 

 

 

 

 

 

MICRONS2000

 

 

 

 

 

VACUUM TIGHT

1500

 

 

 

 

 

 

 

 

 

 

TOO WET

1000

 

 

 

 

 

 

 

 

 

 

TIGHT

500

 

 

 

 

 

 

 

 

 

 

DRY SYSTEM

 

 

 

 

 

 

0

1

2

3

4

5

6

7

 

 

 

MINUTES

 

 

A95424

 

 

 

 

 

 

 

Fig. 10—Deep Vacuum Graph

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

BREAK VACUUM WITH DRY NITROGEN

WAIT

EVACUATE

CHECK FOR TIGHT, DRY SYSTEM (IF IT HOLDS DEEP VACUUM)

CHARGE SYSTEM

A95425

Fig. 11—Triple Evacuation Method

G. FINAL TUBING CHECK

IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight.

VIII. MAKE ELECTRICAL CONNECTIONS

WARNING: To avoid personal injury or death, do not supply power to unit with compressor terminal box cover removed.

Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown on unit rating plate. Contact local power company for correction of improper voltage. See unit rating plate for recommended circuit protection device.

NOTE: Operation of unit on improper line voltage constitutes abuse and could affect unit reliability. See unit rating plate. Do not install unit in system where voltage may fluctuate above or below permissible limits.

NOTE: Use copper wire only between disconnect switch and unit.

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Bryant 698B instruction manual Minutes, Final Tubing Check, VIII. Make Electrical Connections
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698B specifications

The Bryant 698B is an advanced residential air conditioning unit known for its efficiency and reliability in delivering optimal indoor climate control. Designed for comfort and energy savings, the Bryant 698B is a notable choice for homeowners seeking high-performance cooling solutions.

One of its standout features is its impressive Seasonal Energy Efficiency Ratio (SEER) rating, which ranges from 16 to 18, depending on the specific model. This high efficiency helps to reduce energy consumption while providing consistent cooling performance, allowing homeowners to enjoy a comfortable environment without incurring high electricity bills. The unit's efficient operation is recognized by various energy efficiency certifications, helping promote a more sustainable lifestyle.

The Bryant 698B is equipped with a variable-speed compressor, which adjusts its operating speed based on the cooling needs of the home. This technology allows the system to run at lower speeds for longer periods, ensuring a more consistent temperature throughout the space and reducing wear and tear on the system. This also minimizes noise levels, making the Bryant 698B one of the quieter units available today.

In terms of build quality, the Bryant 698B features a durable steel cabinet designed to withstand harsh weather conditions. The unit is treated with a baked-on powder finish that provides corrosion resistance, ensuring its longevity even in challenging environments. Additionally, the coil is designed for easy maintenance, allowing for optimal airflow and ensuring the system runs efficiently.

Smart technology integration is another highlight of the Bryant 698B. The unit can be connected to a smart thermostat, offering homeowners remote access to control their HVAC system from their smartphones. This capability allows for more precise temperature adjustments and scheduling, contributing to enhanced energy savings and increased comfort.

The Bryant 698B also offers various customizable options, including different cooling capacities and compatibility with additional heating systems like heat pumps or gas furnaces. This versatility makes it suitable for a wide range of residential applications.

In summary, the Bryant 698B air conditioning unit stands out due to its energy efficiency, variable-speed compressor, durable construction, smart technology features, and customization options, making it an ideal choice for homeowners looking for a robust and efficient cooling solution.
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