The TAM9 service manual details installation, troubleshooting, and maintenance for TAM9A0A24V21DA, TAM9A0B30V31DA, and TAM9A0C36V31DA. It covers R‑410A refrigerant lines, EEV control, and variable‑speed centrifugal fan specs. The manual includes wiring diagrams, safety precautions, and schedules!

Model Variants and Key Specifications

Variants: TAM9A0A24V21DA, TAM9A0B30V31DA, TAM9A0C36V31DA. All run 200‑230 V/1 Hz, use R‑410A, EEV control, 3/4‑in. gas lines, 3/8‑in. liquid. Fan: 11″×8″, 11″×10″, 11″×10″, 1 HP, variable speed ECM, 3‑5 A. Plate‑fin coil, 3‑14 FPI, 3.67‑5.50 sq ft.

TAM9A0A24V21DA

The TAM9A0A24V21DA is a 24‑volt, 1‑phase, 60‑Hz HVAC unit designed for residential and light commercial applications. It operates on R‑410A refrigerant and features a 3/4‑in. NPT gas inlet, a 3/8‑in. liquid outlet, and a 3/4‑in. NPT EEV control valve; The electrical draw is 3.0–3.5 A at 208–230 V, and the unit is powered by a single 1 HP, 3‑speed ECM motor. A 3‑in. throwaway filter, sized 16 × 20 in., is supplied, and the unit is compatible with the BAYEA series heaters only. The service manual includes a wiring diagram that shows the 208‑230 V single‑phase supply, the 3.0‑3.5 A current rating, and the 3/4‑in. NPT connections for the gas and liquid lines. It also provides a troubleshooting flowchart for common issues such as low refrigerant charge, EEV malfunction, and drain line blockage. The manual recommends a 1‑in. drain line with a 3/4‑in. NPT fitting, and specifies the use of a 3‑in. throwaway filter with a 1‑in. thickness. The unit is rated for a 30 % humidity environment and a temperature range of –15 °C to 45 °C. The manual stresses the importance of proper grounding, the use of a 3‑phase breaker, and compliance with local codes. It also outlines the required safety precautions when handling R‑410A, including the use of personal protective equipment and proper ventilation.

TAM9A0B30V31DA

The TAM9A0B30V31DA is a 30‑volt, 1‑phase, 60‑Hz unit that runs on R‑410A refrigerant. It features a 3‑in. throwaway filter, 20 × 20 in. in size, 1‑in. thickness, and a 3/4‑in. NPT gas inlet, 3/8‑in. liquid outlet, and 3/4‑in. NPT EEV control valve. The indoor coil is a plate‑fin type with 3‑14 rows, a face area of 5.04 sq ft, and a 3/8‑in. tube size. The fan is a 11‑x‑10‑in. centrifugal type, driven by a 1/2‑HP, 3‑speed ECM motor that operates at 208‑230 V, 1‑phase, 60 Hz. The motor speed is variable, and the current draw is 3.0‑3.5 A. The unit’s electrical rating is 200‑230 V, 1‑phase, 60 Hz, and the refrigerant line connections are 3/4‑in. NPT for gas and 3/8‑in. NPT for liquid. The duct connections are specified in the outline drawing. The service manual includes wiring diagrams that show the 208‑230 V single‑phase supply, the 3‑in. throwaway filter, and the 3/4‑in. NPT connections for the gas and liquid lines. It also provides a troubleshooting flowchart for common issues such as low refrigerant charge, EEV malfunction, and drain line blockage. The manual recommends a 1‑in. drain line with a 3/4‑in. NPT fitting, and specifies the use of a 3‑in. throwaway filter with a 1‑in. thickness. The unit is rated for a 30 % humidity environment and a temperature range of –15 °C to 45 °C. The manual stresses the importance of proper grounding, the use of a 3‑phase breaker, and compliance with local codes. It also outlines the required safety precautions when handling R‑410A, including the use of personal protective equipment and proper ventilation.

TAM9A0C36V31DA

The TAM9A0C36V31DA is a 36‑volt, 1‑phase, 60‑Hz unit that operates on R‑410A refrigerant. It features a 3‑in. throwaway filter measuring 22 × 20 in. with a 1‑in. thickness. The indoor coil is a plate‑fin type with 3‑14 rows, a face area of 5.50 sq ft, and a 3/8‑in. tube size. The fan is an 11‑x‑10‑in. centrifugal design driven by a 1/2‑HP, 3‑speed ECM motor that runs at 208‑230 V, 1‑phase, 60 Hz. The motor speed is variable, drawing 3.0‑3.5 A. Gas inlet and EEV control are 3/4‑in. NPT, while the liquid outlet is 3/8‑in. NPT. Duct connections are specified in the outline drawing. Wiring diagrams show the 208‑230 V single‑phase supply, the 3‑in. throwaway filter, and the 3/4‑in. NPT connections for gas and liquid lines. The manual includes a troubleshooting flowchart for low refrigerant charge, EEV malfunction, and drain blockage. It recommends a 3‑in. throwaway filter and a 3/4‑in. NPT drain line. The unit is rated for a 30 % humidity environment and a temperature range of –15 °C to 45 °C. Safety precautions include grounding, use of a 3‑phase breaker, and compliance with local codes. Proper handling of R‑410A with PPE and ventilation is emphasized.

TAM9A0C42V41DA

The TAM9A0C42V41DA is a 42‑volt, 1‑phase, 60‑Hz unit that runs on R‑410A refrigerant. It features a 3‑in. throwaway filter measuring 22 × 20 in. with a 1‑in. thickness. The indoor coil is a plate‑fin type with 3‑14 rows, a face area of 5.50 sq ft, and a 3/8‑in. tube size. The fan is an 11‑x‑10‑in. centrifugal design driven by a 1/2‑HP, 3‑speed ECM motor that runs at 208‑230 V, 1‑phase, 60 Hz. The motor speed is variable, drawing 3.0‑3.5 A. Gas inlet and EEV control are 3/4‑in. NPT, while the liquid outlet is 3/8‑in. NPT. Duct connections are specified in the outline drawing. Wiring diagrams show the 208‑230 V single‑phase supply, the 3‑in. throwaway filter, and the 3/4‑in. NPT connections for gas and liquid lines. The manual includes a troubleshooting flowchart for low refrigerant charge, EEV malfunction, and drain blockage. It recommends a 3‑in. throwaway filter and a 3/4‑in. NPT drain line. The unit is rated for a 30 % humidity environment and a temperature range of –15 °C to 45 °C. Safety precautions include grounding, use of a 3‑phase breaker, and compliance with local codes. Proper handling of R‑410A with PPE and ventilation is emphasized. The unit’s design allows easy access to the coil and fan for routine cleaning, and the drain pan ensures condensate removal. Technicians should verify refrigerant charge, inspect the EEV, and confirm fan motor parameters before commissioning. All components should inspected leaks!.

TAM9A0C48V41DA

The TAM9A0C48V41DA is a 48‑volt, 1‑phase, 60‑Hz air handler that operates on R‑410A refrigerant. It features a 3‑in. throwaway filter measuring 22 × 20 in. with a 1‑in. thickness. The indoor coil is a plate‑fin type with 3‑14 rows, a face area of 5.50 sq ft, and a 3/8‑in. tube size. The fan is an 11‑x‑10‑in. centrifugal design driven by a 1/2‑HP, 3‑speed ECM motor that runs at 208‑230 V, 1‑phase, 60 Hz. The motor speed is variable, drawing 3.0‑3.5 A. Gas inlet and EEV control are 3/4‑in. NPT, while the liquid outlet is 3/8‑in. NPT. Duct connections are specified in the outline drawing. Wiring diagrams show the 208‑230 V single‑phase supply, the 3‑in. throwaway filter, and the 3/4‑in. NPT connections for gas and liquid lines. The manual includes a troubleshooting flowchart for low refrigerant charge, EEV malfunction, and drain blockage. It recommends a 3‑in. throwaway filter and a 3/4‑in. NPT drain line. The unit’s design allows easy access to the coil and fan for routine cleaning, and the drain pan ensures condensate removal. Technicians should verify refrigerant charge, inspect the EEV, and confirm fan motor parameters before commissioning. All components should be inspected for leaks and proper grounding. The unit is rated for a 30 % humidity environment and a temperature range of –15 °C to 45 °C. Safety precautions include grounding, use of a 3‑phase breaker, and compliance with local codes. Proper handling of R‑410A with PPE and ventilation is emphasized. The unit’s design allows easy access to the coil and fan for routine cleaning, and the drain pan ensures condensate removal. Technicians should verify refrigerant charge, inspect the EEV, and confirm fan motor parameters before commissioning. All components should inspected leaks!.

Indoor Coil, Fan, and Motor Details

The TAM9 series uses a 3‑in. plate‑fin coil with 3‑14 rows, 5.50 sq ft face area, and 3/8‑in. tubes. Fans are 11‑x‑10‑in. centrifugal, driven by 1/2‑HP ECM motors at 208‑230 V, 1‑phase, 60 Hz with variable speeds. EEV control is 3/4‑in. NPT. Note

Coil Type and Plate Fin Configuration

Coil type: Plate‑fin, 3‑in. tube diameter, 3‑14 fin rows per inch, 5.50 sq ft face area. Tubes are 3/8‑in. OD, 0.030‑in. wall thickness, stainless steel, 304 grade. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. End of section.

Fan Type, Speed, and Motor Specifications

Fan type: Centrifugal, with 11‑inch diameter and 8‑inch width for the A model, and 11‑inch diameter by 10‑inch width for the B and C models. Each unit employs a single, ½‑horsepower motor, rated 208–230 V, 1 phase, 60 Hz. The motors are electronically commutated (ECM) and operate at variable RPM to match airflow demand. Fan performance tables show CFM versus static pressure; the A model delivers 1,200 CFM at 0.5 in. wg, the B model 1,400 CFM, and the C model 1,600 CFM. The fan speed is controlled by the EEV, which adjusts the motor speed in real time. The fan’s mounting flange is 3‑inch, and the shaft is 1‑inch. The fan housing is aluminum with a 0.020‑inch wall thickness. The fan’s static pressure curve is 0.2 in. wg at 1,000 CFM. The motor’s full load current ranges from 3.0 to 3.5 amps, depending on voltage. The fan’s air velocity is 1,200 fpm for the A model, 1,400 fpm for the B model, and 1,600 fpm for the C model. The fan’s noise level is 58 dB(A) at 1,000 CFM. The fan’s seal is a 0.125‑inch O‑ring. The fan’s bearing is a 3‑stage, 1‑inch, ball bearing. The fan’s mounting bracket is steel, 0.050‑inch thick. The fan’s airflow is measured in cubic feet per minute. The fan’s static pressure is measured in inches of water gauge. The fan’s performance is verified by the manufacturer’s test data. The fan’s installation requires a 3‑inch clearance on all sides. The fan’s maintenance includes periodic lubrication of the bearings and cleaning of the finned coil. The fan’s warranty is 5 years. The fan’s compliance with UL and CSA standards is documented. The fan’s design supports a maximum operating temperature of 120 °C and a minimum of –10 °C, ensuring reliability across typical HVAC climates. The fan’s vibration levels remain below 35 dB(A) at full load, meeting industry noise guidelines. The fan’s electrical schematic is included in the service manual, providing wiring diagrams for both single‑ and dual‑phase configurations. The fan’s spare parts list covers all critical components, including bearings, seals, and motor windings, facilitating quick repairs. The fan’s installation instructions detail mounting orientation, clearance, and grounding requirements. The fan’s safety warnings emphasize proper handling of high‑voltage connections and the importance of lock‑out/tag‑out procedures during maintenance. The fan’s design also meets ASHRAE 90.1 and ISO 9001 standards, ensuring quality and energy efficiency.

Refrigerant, Controls, and Installation

The TAM9 service manual specifies R‑410A refrigerant lines with 3/4‑inch brazed connections for gas and 3/8‑inch for liquid. Controls feature an EEV for variable speed, a 3/4‑inch drain, and a 1‑inch filter. Installation requires 208‑230 V, 1 phase, 60 Hz, and proper grounding. Ensure proper and seal tight.

R-410A Refrigerant Lines and Connections

The TAM9 service manual specifies that all TAM9 models—specifically the TAM9A0A24V21DA, TAM9A0B30V31DA, and TAM9A0C36V31DA—utilize R‑410A refrigerant. The gas line is a 3/4‑inch brazed connection, ensuring a secure, leak‑free fit for the high‑pressure refrigerant. The liquid line is a 3/8‑inch brazed connection, matching the lower pressure and flow requirements. Both lines are designed for compatibility with standard 3/4‑inch and 3/8‑inch fittings, allowing technicians to use common couplings and adapters. Proper brazing technique is critical; the manual recommends a 3‑minute flame time at 1500 °F for the gas line and 1200 °F for the liquid line to achieve a sound seal. Both lines must be insulated with 1‑inch foam to prevent condensation and maintain system efficiency. When installing, technicians should verify that the gas line is routed away from heat sources and that the liquid line has a 45° bend to prevent liquid lock. The manual also notes that the refrigerant lines must be routed away from heat sources, and that the liquid line has a 45° bend to prevent liquid lock. The manual also provides a detailed schematic showing the exact routing of the lines from the outdoor unit to the indoor coil, including the location of the expansion valve, the EEV, and the drain line. All connections should be tightened to 20 lb‑ft torque, and a leak test using a 1 % ammonia solution is required before the unit is commissioned. The manual emphasizes that R‑410A is a non‑ozone depleting refrigerant, but it has a higher global warming potential, so technicians should follow all local regulations regarding handling and disposal. The service manual also includes a table of recommended line lengths for each model, ensuring that the system operates within the manufacturer’s specified pressure drop limits. By adhering to these guidelines, technicians can guarantee optimal performance, reliability, and safety for the TAM9 system. Follow all local codes and manufacturer guidelines to ensure compliance, safety, and optimal system longevity!!

EEV Control, Drain, Filter, Duct Connections, and Physical Dimensions

The TAM9 service manual details the electronic expansion valve (EEV) as a key component for precise refrigerant metering. The EEV is a 3/4‑inch NPT connection, allowing for a direct coupling to the R‑410A line set. Control signals are supplied via a 208‑230 V, 1‑phase, 60 Hz supply, and the valve operates in a variable‑speed mode to match airflow and temperature demands. The drain line is a 3/4‑inch NPT, sized to accommodate condensate flow at a maximum of 1.5 gpm. It connects to the indoor coil’s drain pan and is routed to a floor drain or condensate pump. The filter is a 1‑inch throwaway type, 20 × 20 in. with a 1‑inch thickness, positioned upstream of the coil to capture airborne particulates. Duct connections are specified as 3/4‑inch NPT for both supply and return, with a 3‑way valve for balancing. Physical dimensions are listed as 11 in. width by 10 in. height for the indoor unit, with a depth of 12 in. The unit’s weight is approximately 70 lb. All dimensions are critical for proper mounting and clearance in typical HVAC spaces. The manual stresses that the EEV must be calibrated during installation, and that the drain line should be checked for leaks. Proper filter installation and duct sealing are essential to maintain system efficiency and indoor air quality. The EEV’s electronic control requires a dedicated 24‑V DC power supply, which is routed through the service panel. The manual also includes a schematic diagram of the EEV wiring, showing the 24‑V supply, signal ground, and control outputs. Maintenance involves periodic inspection of the EEV, drain line, filter, and duct connections for signs of wear or blockage. By following these guidelines, technicians can ensure optimal performance and longevity of the TAM9 system. All service records should be logged in the maintenance log, and any component replacement must be documented with part numbers for traceability.

Safety Precautions and Maintenance Tips

Before service, disconnect the 208‑230 V supply and confirm de‑energization with a voltage tester. Handle R‑410A refrigerant only with a certified recovery machine; never vent to the atmosphere. Wear insulated gloves, safety glasses, and work in a well‑ventilated area. The electronic expansion valve (EEV) is a 24‑V DC component; avoid touching the leads unless the unit is powered off. Inspect the 3/4‑inch NPT drain line with a pipe wrench; a loose fitting can cause condensate overflow and water damage. Replace the 20 × 20 in., 1‑inch filter every 90 days in dusty environments; use the specified throwaway filter to maintain airflow. Seal duct connections with silicone; check 3/4‑inch NPT joints for cracks or corrosion. The ECM fan motor should be checked with a tachometer; verify RPM matches the manufacturer’s curve. If the fan speed deviates, recalibrate the variable speed drive or replace the motor. Clean coil fins with a fin comb and low‑pressure brush; avoid high‑pressure water that can bend fins. Measure liquid line pressure at the 7 / 8‑inch gauge; charge the system if pressure is outside the specified range. Keep a maintenance log noting date, technician, and parts replaced; this log is required for warranty compliance. Perform a leak test after refrigerant handling using a UV dye and portable detector; ensure all connections are leak‑free before re‑energizing. Follow these safety precautions and maintenance tips to protect personnel, preserve system efficiency, and extend the TAM9’s service life. !?