DURASTAR DRF2TA2421ASTNJN0 (01) PDF Document

The DURASTAR DRF2TA2421ASTNJN0 air handler features a Constant Torque Motor (ECM), Two-Stage Airflow, and a Thermal Expansion Valve (TXV). It offers efficiencies ranging from 13.4 to 14.3 SEER2.

Front or Bottom Return with aluminum tube and fin coil

TXV for cooling or heat pump operation

Wall-hanging brackets

Built in Filter Rack

Molex Plug Connections for field installed heater kits

Dual Voltage Direct Drive Blower with multi-speed motor

Thermoplastic Drain Pan with bottom primary and secondary connections

Optional Decorative Grill for front return applications

Optional Factory Installed Condensate Float Switch which shuts off the outdoor unit in the event the condensate pan becomes clogged

Cabinet air leakage less than 2% at 1 inch H2O when tested in accordance with ASHRAE Standard 193

Can be field wired for single or two stage applications

Exclusive Incoloy sheath type electric heating elements

Field convertible air supply

Durable framed cleanable air filter

Indoor coil design provides low air side pressure drop, high performance and compact size

PVC condensate elbow is standard on all coils

All indoor coils have aluminum tubing and aluminum fins

Molded polymer corrosion resistant condensate drain pan

Supply and return duct flanges

High and low voltage connection points inside cabinet

Concentric knockouts provided for power connection with hole size up to 2 inches [51 mm] for 1 1/2 inch [38mm] conduit

Internal checked TX valves for quiet refrigerant metering

Front refrigerant and drain connection

A clearance of 24 inches [610 mm] is required in front of the unit for filter and coil maintenance.

For optimum blower performance, operate the unit in the .3 [8 mm] to .7 inches [18 mm] W.C. external static range. Units with coils should be applied with a minimum of .1 inch [3 mm] W.C. external static range.

All DRF2TA air-handlers have 5-speed constant torque motors.

Speed tap 1 is for continuous fan.

Speed tap 2 (low static) and speed tap 3 (high static) are for lower tonnage (1.5 or 2.5 tons).

Speed tap 4 (low static) and speed tap 5 (high static) are for higher tonnage (2.0 or 3.0 tons).

DRF2TA air handlers are always shipped from the factory at speed tap 5.

The low static speed tap 2 (lower tonnage) and 4 (higher tonnage) are for external static pressures below 0.5″ WC. The high static speed tap 3 (lower tonnage) and 5 (higher tonnage) are used for external static exceeding 0.5″ WC. Move the blue wire to the appropriate speed tap on the motor terminal block as required by the application needs.

The airflow for continuous fan (speed tap 1) is always set at 50% of the speed tap 4.

*Blower motors are all single phase motors.

Field wiring must comply with the National Electrical Code.

This product must be sufficiently grounded in accordance with (C.E.C. in Canada) and any applicable local ordinance.

Supply wiring must be 75°C minimum copper conductors only.

See electrical data for product Ampacity rating and Circuit Protector requirement.

A grounding lug is provided.

The Drain Pan Overflow Switch Kit RXHK-A01 is used to detect a condensate drain blockage. If a blockage is detected, it will shut down the outdoor unit to prevent structural damage to the surrounding structures of the air handler.

The Bottom Return Conversion Kit is used to divert the return air from the factory standard front return to a bottom return. The compatible kit for the DURASTAR DRF2TA2421ASTNJN0 is RXHK-B01.

The Louvered Cabinet Grill Kit is used as a decorative grill that covers the return air opening of the front return air handler. The compatible kit for the DURASTAR DRF2TA2421ASTNJN0 is RXHK-C01.

A Decorative Wall Grill Kit (RXHK-D01 or RXHK-D02) is used in applications where the air handler is installed in a closet or interior wall. It allows for adequate return air back to the unit.