Refrigerant Lines

Maximum Overcurrent Protection (MOP)

Every installation must include an NEC (USA) or CEC (Canada) approved overcurrent protection device. Also, check with local or state codes for any special regional re- quirements.

Protection can be in the form of fusing or HACR style circuit breakers. The Series and Rating Plate can be used as a guide for selecting the MAXIMUM overcurrent device.

NOTE: Fuses or circuit breakers are to be sized larger than the equipment MCA but not to exceed the MOP.

Electrical Connections – Supply Voltage

USE COPPER CONDUCTORS ONLY.

A knockout is provided on the air handler top panel or side to allow for the entry of the supply voltage conductors. If the knockouts on the cabinet sides are used for electrical con- duit, an adapter ring must be used in order to meet UL1995 safety requirements. An NEC or CEC approved strain relief is to be used at this entry point. The wire is to be sized in accordance with the “Electrical Wire and MOP” section of this manual. Some areas require the supply wire to be en- closed in conduit. Consult your local codes.

Air Handler Only (Non-Heat Kit Models)

The building supply connects to the stripped black and red wires contained in the air handler electrical compartment cav- ity. A ground screw is also contained in this area. Attach the supply wires to the air handler conductors as shown in the unit wiring diagram using appropriately sized solderless con- nectors or other NEC or CEC approved means.

Air Handler With Non-Circuit Breaker Heat Kits

A terminal block is provided with the HKR kit to attach the power supply and air handler connections. Follow the HKR Installation Manual and wiring diagram for complete wiring details.

Air Handler With Heat Kits Containing a Circuit Breaker

HKR models with a “C” suffix contain a circuit breaker(s). The air handler has a plastic cover on the access panel that will require either one or both sections to be removed to al- low the heat kit circuit breaker(s) to be installed. See the HKR Installation Instructions for further details. The air han- dler wires and supply wires are installed directly onto the HKR circuit breaker(s) as shown in the HKR Installation Manual and wiring diagram.

Low Voltage Connections

Several combinations of low voltage schemes are available, depending on the presence of a heat kit and whether the heat kit is single-stage or multi-staging. The low voltage con- nections are determined by whether the outdoor unit is a con- denser or heat pump. The 24V-control voltage connects the air handler to the room thermostat and condenser. Low volt- age wiring is to be copper conductors. A minimum of 18AWG must be used for installations up to 50’ and 16AWG for in- stallations over 50’. Low voltage wiring can be connected through the top of the cabinet or either side. See the “Ther- mostat Wiring” section of this manual for typical low voltage wiring connections.

This product is factory-shipped under pressure. Follow these instructions to prevent injury.

A quenching cloth is strongly recommended to prevent scorching or marring of the equipment finish when welding close to the painted surfaces. Use brazing alloy of 5% minimum silver content.

Tubing Preparation

All cut ends are to be round, burr free, and clean. Failure to follow this practice increases the chances for refrigerant leaks. The suction line is spun closed and requires pipe cutters to remove the closed end.

Post Brazing

Quench all welded joints with water or a wet rag.

Piping Size

For the correct tubing size, follow the specification for the condenser/heat pump.

CAUTION

Applying too much heat to any tube can melt the tube. Torch heat required to braze tubes of various sizes must be proportional to the size of the tube. Service personnel must use the appropriate heat level for the size of the tube being brazed.

Special Instructions

This coil comes equipped with a check style flowrator for re- frigerant management. For most installations with matching applications, no change to the flowrator piston is required. However, in mix-matched applications, a flowrator piston change may be required. See the Goodman® piston kit chart or consult your local distributor for details regarding mix- matched piston sizing. If the mix-match application requires a different piston size, change the piston in the flowrator on the indoor coil before installing the coil and follow the proce- dure shown below.

IMPORTANT NOTE: Torch heat required to braze tubes of various sizes is proportional to the size of the tube. Tubes of smaller size require less heat to bring the tube to brazing temperature before adding brazing alloy. Applying too much heat to any tube can melt the tube. Service personnel must use the appropriate heat level for the size of the tube being brazed.

NOTE: The use of a heat shield when brazing is recommended to avoid burning the serial plate or the finish on the unit. Heat trap or wet rags should be used to protect heat sensitive components such as service valves and TXV valves.

1.Loosen the 13/16 nut 1 TURN ONLY to allow high pres- sure tracer gas to escape. No gas indicates a possible leak.

ATUF, ADPF, ASPF, ARUF specifications

Goodman Manufacturing is synonymous with quality and reliability in the HVAC industry, offering a wide range of air handling units, including the ARUF, ASPF, ADPF, and ATUF series. These products showcase advanced technologies while providing cost-effective solutions for residential and commercial applications.

The ARUF series is designed specifically for reliable indoor air management. These air handlers are known for their high-efficiency performance and compact design, making them suitable for tight spaces. They feature an insulated cabinet that minimizes noise and energy loss, ensuring a quieter operation and increased comfort. The ARUF units also have a multi-speed blower motor, which provides improved airflow and better temperature control, enhancing overall system efficiency.

The ASPF series stands out with its variable-speed motor technology. This innovation allows for precise airflow adjustments, adapting seamlessly to changing thermal loads within the space. Such adaptability not only improves comfort levels but also leads to energy savings by optimizing performance during varying usage periods. Additionally, the ASPF air handlers are designed for easy installation, incorporating lightweight components and a versatile design that accommodates different configurations and applications.

Meanwhile, the ADPF series is highly regarded for its durability and performance in moisture-rich environments. Engineered with a robust housing, the ADPF units offer increased corrosion resistance, making them ideal for locations susceptible to humidity. The units come equipped with enhanced filtration capabilities, ensuring improved indoor air quality by capturing dust, pet dander, and other allergens effectively.

Lastly, the ATUF series combines advanced technology with user-friendly features. These units feature a high-efficiency air filter and a low-profile design, perfect for a variety of applications. The ATUF air handlers come equipped with integrated control systems that allow users to easily adjust settings and monitor performance, ensuring optimal operation over time.

In summary, Goodman Manufacturing's ARUF, ASPF, ADPF, and ATUF air handling units showcase cutting-edge technologies, robust construction, and energy-efficient designs. Each series offers unique features tailored to meet the diverse needs of customers, ensuring enhanced comfort and cost savings in residential and commercial environments. With a commitment to quality and innovation, Goodman continues to be a leader in the HVAC market.

Goodman Mfg ARUF, ATUF, ASPF, ADPF Refrigerant Lines, Maximum Overcurrent Protection MOP