Check Charge

Factory charge amount and desired subcooling are shown on unit rating plate. Charging method is shown on information plate inside unit. To properly check or adjust charge, conditions must be favorable for subcooling charging. Favorable conditions exist when the outdoor temperature is between 70_F and 100_F (21.11_C and 37.78_C), and the indoor temperature is between 70_F and 80_F (21.11_C and 26.67_C). Follow the procedure below:

Unit is factory charged for 15ft (4.57 m) of lineset. Adjust charge by adding or removing 0.6 oz/ft (.018 kg/m) of 3/8 liquid line above or below 15ft (4.57 m) respectively.

For standard refrigerant line lengths (80 ft/24.38 m or less), allow system to operate in cooling mode at least 15 minutes. If conditions are favorable, check system charge by subcooling method. If any adjustment is necessary, adjust charge slowly and allow system to operate for 15 minutes to stabilize before declaring a properly charged system.

If the indoor temperature is above 80_F (26.67_C), and the outdoor temperature is in the favorable range, adjust system charge by weight based on line length and allow the indoor temperature to drop to 80_F (26.67_C) before attempting to check system charge by subcooling method as described above.

If the indoor temperature is below 70_F (21.11_C), or the outdoor temperature is not in the favorable range, adjust charge for line set length above or below 15ft (4.57 m) only. Charge level should then be appropriate for the system to achieve rated capacity. The charge level could then be checked at another time when the both indoor and outdoor temperatures are in a more favorable range.

NOTE: If line length is beyond 80 ft (24.38 m) or greater than 20 ft (6.10 m) vertical separation, See Long Line Guideline for special charging requirements.

Units with Cooling Mode TXV

Units installed with cooling mode TXV require charging by the subcooling method.

1.Operate unit a minimum of 10 minutes before checking charge.

2.Measure liquid service valve pressure by attaching an accur- ate gage to service port.

3.Measure liquid line temperature by attaching an accurate thermistor type or electronic thermometer to liquid line near outdoor coil.

4.Refer to unit rating plate for required subcooling temperat- ure.

5.Refer to Table 3. Find the point where required subcooling temperature intersects measured liquid service valve pres- sure.

6.To obtain required subcooling temperature at a specific li- quid line pressure, add refrigerant if liquid line temperature is higher than indicated or reclaim refrigerant if temperature is lower. Allow a tolerance of 3_F.

Units with Indoor Pistons

Units installed with indoor pistons require charging by the superheat method.

The following procedure is valid when indoor airflow is within 21 percent of its rated CFM.

1.Operate unit a minimum of 10 minutes before checking charge.

2.Measure suction pressure by attaching an accurate gage to suction valve service port.

3.Measure suction temperature by attaching an accurate ther- mistor type or electronic thermometer to suction line at ser- vice valve.

4.Measure outdoor air dry-bulb temperature with thermomet- er.

5.Measure indoor air (entering indoor coil) wet-bulb temper- ature with a sling psychrometer.

6.Refer to Table 4. Find outdoor temperature and evaporator entering air wet-bulb temperature. At this intersection, note superheat. Where a dash (--) appears on the table, do not attempt to charge system under these conditions or refriger- ant slugging may occur. Charge must be weighted in, adding or removing 0.6 oz/ft of 3/8 liquid line above or be- low 15 ft (4.57 m) respectively.

7.Refer to Table 5. Find superheat temperature located in item 6 and suction pressure. At this intersection, note suction line temperature.

8.If unit has a higher suction line temperature than charted temperature, add refrigerant until charted temperature is reached.

9.If unit has a lower suction line temperature than charted temperature, reclaim refrigerant until charted temperature is reached.

10.When adding refrigerant, charge in liquid form into suction service port using a flow-restricting device.

11.If outdoor air temperature or pressure at suction valve changes, charge to new suction line temperature indicated on chart.

12.Optimum performance will be achieved when the operating charge produces 5_ to 6_F suction superheat at suction service valve with 82_F outdoor ambient and 80_F (26.7_C) dry bulb (67_F / 19.4_C) wet bulb) indoor temperature (DOE “B” test conditions) at rated airflow.

Heating Check Chart Procedure

To check system operation during heating cycle, refer to the Heating Check Chart on outdoor unit. This chart indicates whether a correct relationship exists between system operating pressure and air temperature entering indoor and outdoor units. If pressure and temperature do not match on chart, system refrigerant charge may not be correct. Do not use chart to adjust refrigerant charge.

223A / 225B

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Bryant 223A Check Charge, Units with Cooling Mode TXV, Units with Indoor Pistons, Heating Check Chart Procedure
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223A specifications

The Bryant 223A is a cutting-edge air conditioning unit that epitomizes modern cooling technology. Designed for both residential and commercial applications, this model stands out for its efficiency, reliability, and user-friendly features. One of the most significant aspects of the Bryant 223A is its energy efficiency, boasting a Seasonal Energy Efficiency Ratio (SEER) rating of up to 16. This high rating means lower energy consumption, translating into reduced utility bills for homeowners and businesses alike.

One prominent feature of the Bryant 223A is its environmentally friendly design. It utilizes Puron refrigerant, which has zero ozone-depleting potential, making it a responsible choice for those looking to minimize their environmental footprint. In addition to being eco-conscious, the unit is equipped with a variable-speed compressor, allowing for improved humidity control and enhanced comfort levels. This technology enables the system to adjust its cooling output based on the current indoor conditions, resulting in more consistent temperatures and quieter operation.

Another noteworthy characteristic of the Bryant 223A is its robust construction. The cabinet is designed with galvanized steel, offering durability and resistance to corrosion. This resilience ensures that the unit can withstand the rigors of various weather conditions, contributing to its longevity. Moreover, the unit features an innovative design that minimizes noise levels, ensuring that it operates quietly without disturbing daily activities.

Ease of installation is yet another advantage of the Bryant 223A. The unit comes with a compact design, allowing for straightforward placement in a variety of settings. Additionally, its integration with modern smart thermostats provides users with enhanced control over their indoor climate. This feature enables homeowners to monitor and adjust their air conditioning settings remotely, adding convenience and efficiency to their energy management.

The Bryant 223A also incorporates advanced filtration systems, which significantly improve indoor air quality. Enhanced filters capture a wide range of airborne particles, including allergens, dust, and pollutants, making it an excellent choice for households with allergy sufferers. Overall, the Bryant 223A combines state-of-the-art technology, eco-friendly operation, and user-centric features, making it a leading choice in air conditioning solutions for a variety of environments.
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