Daikin 3 Ton 13.4 SEER2 Heat Pump and Multi-Positional Air Handler System | 208/230V 3 Phase - R32 - Single Stage

Reliable Year-Round Comfort with a 3-Ton Commercial Split Heat Pump System for Light Commercial Applications

The Daikin DH4SEA3630 / AMST36CU1300 is a nominal 3-ton split heat pump system designed to provide year-round heating and cooling for suitable ducted applications. Combining the DH4SEA3630 outdoor heat pump with the AMST36CU1300 multi-position indoor air handler, this system features a high-efficiency Copeland scroll compressor, R-32 refrigerant, and a nine-speed electronically commutated motor (ECM) blower to support dependable comfort and flexible installation. The DH4SEA3630 operates on 208/230V, three-phase power, while the indoor air handler operates on 208/230V, single-phase power. The manufacturer's technical documentation identifies this equipment combination for system performance data, making it a suitable option to evaluate for appropriately sized light commercial applications.

Key Benefits

• Energy-Efficient Performance – The DH4SEA3630 outdoor unit is rated at 13.4 SEER2, 12.5 EER2, and 7.5 HSPF2, supporting efficient heating and cooling operation.
• Year-Round Heat Pump Heating – Reversible heat pump technology provides heating and cooling through one outdoor unit, reducing the need for separate primary heating and cooling equipment.
• Dependable Cooling Capacity – The outdoor unit provides nominal 36,000 BTU/h cooling capacity, equivalent to 3 tons, for appropriately sized applications.
• Nine-Speed ECM Blower – The AMST36CU1300 features a direct-drive, nine-speed ECM blower motor to accommodate different airflow requirements.
• Flexible Installation – The multi-position indoor air handler supports approved installation configurations, allowing flexibility in equipment placement and duct routing.
• Ducted Air Distribution – The indoor air handler connects to compatible ductwork to distribute conditioned air throughout the served space.
• Advanced Compressor Technology – The Copeland scroll compressor and CoreSense technology support dependable operation and compressor protection.
• Refrigerant Flow Control – The indoor air handler's factory-installed thermal expansion valve (TXV) helps regulate refrigerant flow for system operation.
• Service-Friendly Design – Accessible service valves, gauge ports, and integrated pressure protection features help facilitate inspection and maintenance.

Reliable Heat Pump Heating for Year-Round Comfort

The Daikin DH4SEA3630 provides nominal 36,000 BTU/h heating capacity, with a rated heating capacity of 36,000 BTU/h under the manufacturer's specified rating conditions. Its single-stage Copeland scroll compressor supports reversible heat pump operation, transferring heat into the indoor space during heating mode. With a rated HSPF2 of 7.5, the outdoor unit is designed to provide efficient heating under appropriate operating conditions. Its specified outdoor heating operating range extends from -20°F to 70°F, subject to the manufacturer's operating requirements and installation conditions. Supplemental electric heat may be available through a compatible field-installed heater kit, provided the selected kit is approved for the indoor air handler and meets the applicable electrical requirements.

3-Ton Cooling Performance for Commercial Comfort

The DH4SEA3630 outdoor heat pump delivers nominal 36,000 BTU/h cooling capacity, equivalent to 3 tons, with a rated cooling capacity of 36,000 BTU/h under specified test conditions. Its Copeland scroll compressor and enhanced aluminum fin coil with 5 mm diameter copper tubes are designed to support heat transfer and dependable cooling operation. The outdoor unit is rated at 13.4 SEER2 and 12.5 EER2. The specified cooling operating range is 55°F to 125°F outdoor dry-bulb temperature. The manufacturer's expanded performance data for the DH4SEA3630 / AMST36CU1300 combination provides cooling capacity information at multiple outdoor temperatures and indoor airflow conditions, helping support system selection and application planning.

Energy Efficiency and Refrigeration Technology

The DH4SEA3630 combines a high-efficiency Copeland scroll compressor with advanced CoreSense technology and refrigeration-system components designed for dependable operation. Standard outdoor-unit components include a factory-installed bi-flow liquid-line filter drier, suction-line accumulator, compressor crankcase heater, high-capacity muffler, and high- and low-pressure switches. Time-delay technology supports quiet, reliable defrost operation during heating. The outdoor unit uses R-32 refrigerant and is factory charged for 15 feet of refrigerant tubing. The AMST36CU1300 complements the system with a factory-installed TXV, an all-aluminum evaporator coil, and a nine-speed ECM blower motor. The DH4SEA3630's published efficiency ratings are 13.4 SEER2, 12.5 EER2, and 7.5 HSPF2; actual performance depends on the installed configuration and operating conditions.

Split-System Design for Flexible Installation

The split-system configuration separates the DH4SEA3630 outdoor heat pump from the AMST36CU1300 indoor air handler, providing flexibility in equipment placement and duct routing. The outdoor unit features sweat-connection refrigerant service valves with accessible gauge ports, a 3/8-inch liquid-line connection, and a 7/8-inch suction-line connection. It is factory charged for 15 feet of refrigerant tubing, with charge adjustments required according to the installation instructions and actual piping length. The indoor air handler features a multi-position cabinet, a factory-installed TXV, and an all-aluminum evaporator coil. The manufacturer's split-system documentation provides performance data for the DH4SEA3630 / AMST36CU1300 combination. Refrigerant piping, electrical connections, installation clearances, and equipment configuration must follow the applicable Daikin installation instructions.

Controls and Indoor Comfort

The system requires compatible heat pump controls and a suitable thermostat selected for the installed equipment configuration. The AMST36CU1300 features a direct-drive, nine-speed ECM blower motor that provides multiple airflow settings for ducted air distribution. Its factory-installed TXV regulates refrigerant flow, while the all-aluminum evaporator coil supports heat transfer during cooling and heat pump operation. Compatible field-installed electric heat kits may provide supplemental heating where required. Thermostat selection, auxiliary heat operation, blower settings, heater-kit compatibility, and system wiring must be verified against the manufacturer's instructions for the exact installation.

Commercial and Ducted Applications

The Daikin DH4SEA3630 / AMST36CU1300 provides nominal 3-ton heating and cooling capacity for appropriately sized ducted spaces. Potential applications include small offices, retail spaces, and other suitable conditioned areas where the required capacity, electrical supply, ductwork, and equipment configuration meet project requirements. The DH4SEA3630 operates on 208/230V, 60 Hz, three-phase power, with a minimum circuit ampacity of 14.2 A and a maximum overcurrent protection rating of 20 A. The AMST36CU1300 operates on 208/230V, single-phase power. Electrical requirements must be checked against each unit's nameplate and installation documentation. Proper system sizing, duct design, airflow setup, and installation by qualified HVAC professionals are essential for reliable operation.

Serviceability and Maintenance

The DH4SEA3630 features service valves with accessible gauge ports, high- and low-pressure switches, a factory-installed liquid-line filter drier, and a suction-line accumulator to support refrigeration-system protection and servicing. Its compressor crankcase heater and time-delay defrost technology provide additional operational safeguards. The outdoor cabinet includes top and side maintenance access, a removable grille-style top, a rust-resistant steel louver coil guard, and single-panel access to controls. The AMST36CU1300's factory-installed TXV and multi-position design support installation and servicing in approved configurations. Routine maintenance should include inspection and cleaning of air filters and coils, condensate drainage checks, inspection of electrical connections, and verification of refrigerant-system operation by qualified personnel in accordance with Daikin's maintenance recommendations.

Warranty

The Daikin DH4SEA commercial heat pump series includes a 5-Year Parts Limited Warranty under the applicable warranty terms. Online registration must be completed within 60 days of installation where required for the stated coverage. The indoor air handler's applicable warranty depends on its product-specific warranty documentation and registration requirements. Coverage duration, eligibility, exclusions, and installation conditions should be verified for both models before purchase and installation. Refer to the official Daikin warranty documentation for complete details.

Recommended Accessories

• Compatible Heat Pump Thermostat – Select a thermostat approved for the installed heat pump and indoor air handler configuration.
• Compatible Electric Heat Kit – Select an approved field-installed heater kit for the AMST36CU1300 if supplemental electric heating is required.
• Outdoor Equipment Pad or Mounting Support – Select a support suitable for the outdoor unit's dimensions, weight, and installation location.
• Electrical Disconnect and Overcurrent Protection – Select components according to each unit's nameplate, installation instructions, and applicable electrical codes.
• Refrigerant Line Set and Duct Transitions – Size and select components according to the approved equipment configuration, refrigerant piping requirements, and site-specific duct design.

Dependable Heating and Cooling with the Daikin DH4SEA3630 / AMST36CU1300

Support year-round indoor comfort with the Daikin DH4SEA3630 / AMST36CU1300 split heat pump system. Combining nominal 3-ton heat pump capacity, a single-stage Copeland scroll compressor, R-32 refrigerant, and a multi-position indoor air handler with nine-speed ECM airflow, this system offers a flexible ducted heating and cooling solution for suitable light commercial applications.