Goodman Mfg CONDENSING AC UNIT SINGLE / THREE PHASE AIR CONDITIONERS, IO-402G Fixed Orifice

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Fixed Orifice

CAUTION

To prevent personal injury, carefully connect and disconnect manifold gauge hoses. Escaping liquid refrigerant can cause burns. Do not vent refrigerant into the atmosphere. Recover all refrigerant during system repair and before final unit disposal.

1.Purge gauge lines. Connect service gauge manifold to base-valve service ports. Run system at least 10 minutes to allow pressure to stabilize.

2.Temporarily install thermometer on suction (large) line near suction line service valve with adequate contact and insulate for best possible reading.

3.Refer to the superheat table provided for proper system superheat. Add charge to lower superheat or recover charge to raise superheat.

4.Disconnect manifold set, installation is complete. Superheat Formula = Suct. Line Temp. - Sat. Suct. Temp.

Expansion Valve System

1.Purge gauge lines. Connect service gauge manifold tobase-valve service ports. Run system at least 10 min- utes to allow pressure to stabilize.

2.Temporarily install thermometer on liquid (small) line near liquid line service valve with adequate contact and insu- late for best possible reading.

3.Check subcooling and superheat. Systems with TXV ap- plication should have a subcooling of 7 ± 2 ºF and super- heat of 8 ± 1 ºF.

a.If subcooling and superheat are low, adjust TXV to 8 ± 1 ºF superheat, then check subcooling.

NOTE: To adjust superheat, turn the valve stem clock- wise to increase and counter clockwise to decrease.

b.If subcooling is low and superheat is high, add charge to raise subcooling to 7 ± 2ºF then check super- heat.

c.If subcooling and superheat are high, adjust TXV valve to 8 ± 1 ºF superheat, then check subcooling.

d.If subcooling is high and superheat is low, adjust TXV valve to 8 ± 1 ºF superheat and remove charge to lower the subcooling to 7 ± 2ºF.

NOTE: Do NOT adjust the charge based on suction pres- sure unless there is a gross undercharge.

4.Disconnect manifold set, installation is complete. Subcooling Formula = Sat. Liquid Temp. - Liquid Line Temp.

NOTE: Check the Schrader ports for leaks and tighten valve cores if necessary. Install caps finger-tight.

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Contents Important Note to the Owner Regarding Product Warranty Important Safety InstructionsShipping Inspection Codes & RegulationsRooftop Installations Installation ClearancesSafe Refrigerant Handling Refrigerant LinesBurying Refrigerant Lines Leak Testing Nitrogen or Nitrogen-Traced Refrigerant Line ConnectionsSystem Evacuation No Leaks Electrical ConnectionsOvercurrent Protection Three Phase Compressor RotationHigh Voltage Connections Low Voltage ConnectionsCharge Verification Final Charge AdjustmentSaturated Suction Pressure Temperature Chart Expansion Valve System Fixed OrificeCooling Troubleshooting InformationThis page Intentionally Left Blank Split Systems Or death Condensing AC UnitRigging Suct Liq Cond Unit Refrigerant Line Length ft 25-49 50-74 TonsRefrigerant Line Connections Minimum Circuit Ampacity MCA 208/230V 197 253 460V 414 506Single State LOW Voltage HOOK-UP Ft-lbs TroubleshootingWiring Diagram Troubleshooting Analysis Table

CONDENSING AC UNIT SINGLE / THREE PHASE AIR CONDITIONERS, IO-402G specifications

Goodman Manufacturing's IO-402G is a prominent model in the realm of condensing air conditioning units, designed to serve both residential and commercial applications effectively. This unit stands out due to its robust construction and impressive energy efficiency, making it a reliable choice for air conditioning needs.

One of the main features of the IO-402G is its versatile power options, available in both single and three-phase configurations. This adaptability allows it to meet various electrical requirements, ensuring compatibility with different installation environments. The unit's design incorporates a high-efficiency scroll compressor, which not only optimizes cooling performance but also enhances durability while significantly reducing operational noise.

The IO-402G is equipped with advanced refrigerant management technology, utilizing R-410A refrigerant, which is environmentally friendly and delivers superior cooling efficiency compared to older refrigerants. This feature reflects Goodman’s commitment to sustainability while also aligning with regulatory changes in refrigerant usage. The unit’s efficiency is further complemented by a high SEER (Seasonal Energy Efficiency Ratio) rating, positioning it among the more energy-efficient systems available in the market today.

In terms of construction, the IO-402G boasts a durable cabinet designed to withstand various weather conditions, featuring a powder-coated finish that resists corrosion and fading. The unit also includes sound-dampening technology to minimize operational noise, ensuring that it operates quietly even in residential settings.

Additionally, the IO-402G provides easy access for service and maintenance, thanks to a user-friendly design that simplifies troubleshooting and repairs. The system is also compatible with a range of Goodman’s thermostats and controls, which can enhance user experience through smart technology and programmable settings.

Furthermore, Goodman’s commitment to quality is reflected in the warranty coverage available with the IO-402G, typically offering a generous limited warranty on parts, underscoring the manufacturer’s confidence in the unit’s longevity and performance.

Overall, the Goodman IO-402G condensing AC unit is an excellent choice for those seeking a reliable, efficient, and durable air conditioning solution for both residential and commercial applications. Its innovative design and thoughtful features make it a standout model in Goodman’s lineup, ensuring comfort and satisfaction for users all year round.
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