This document is the Owner's and Installation Manual for Durastar Packaged Terminal Air Conditioners/Heat Pumps, specifically models DRPTAC07Y32351A, DRPTAC09Y32351A, DRPTAC12Y32351A, DRPTAC15Y32351A, DRPTAC15Y32501A, DRPTHP07Y32351A, DRPTHP09Y32351A, DRPTHP12Y32351A, DRPTHP15Y32351A, and DRPTHP15Y32501A, which use R32 refrigerant and operate on 208/230V 60Hz power.
Function Description
The Durastar Packaged Terminal Air Conditioner/Heat Pump (PTAC/PTHP) is designed to provide heating and cooling for a single room or zone. It offers multiple operating modes including COOL, DRY, HEAT, and FAN. The unit features a memory function that retains control settings (mode, fan speed, on/off, and configuration) in case of power loss. Upon power restoration, the unit will resume operation in its last configured state. An automatic evaporator freeze protection feature turns off the compressor and turns on the indoor fan if the evaporator temperature drops too low, preventing ice buildup. For heat pump models, an automatic quick warm-up feature activates electric heat for one cycle if the room temperature falls 8°F/4.5°C below the set temperature, ensuring rapid heating. The unit also includes a compressor restart delay of three minutes to equalize refrigerant pressure, extending the compressor's lifespan and preventing short-cycling.
The unit can be configured in various ways through DIP switches or the control panel, allowing for customization of settings such as temperature display (°F or °C), setpoint temperature range, continuous (CON) or cycling (CYC) fan operation, low temperature protection, wall thermostat control, and front desk control.
Important Technical Specifications
Models: DRPTAC07Y32351A, DRPTAC09Y32351A, DRPTAC12Y32351A, DRPTAC15Y32351A, DRPTAC15Y32501A, DRPTHP07Y32351A, DRPTHP09Y32351A, DRPTHP12Y32351A, DRPTHP15Y32351A, DRPTHP15Y32501A
Refrigerant: R32 (flammable)
Power Supply: 208/230V 60Hz
Dimensions:
- Width: 42 inches (1067mm)
- Height: 16 inches (408mm)
- Depth: 14 3/4 inches (376mm)
- Rear Grille Clearance: Minimum 20 inches (508mm) for heat radiation and exhaust air flow.
Operating Temperature Ranges:
- COOL mode:
- Indoor Air Temperature: 62°F - 90°F (17°C - 32°C)
- Outdoor Air Temperature: 64°F - 109°F (18°C - 43°C)
- HEAT mode:
- Indoor Air Temperature: 32°F - 80°F (0°C - 27°C)
- Outdoor Air Temperature: 23°F - 76°F (-5°C - 24°C)
Electrical Safety:
- Power supply cord includes a current device with TEST and RESET buttons.
- Receptacle Requirements:
- 3.5 kW auxiliary electric heater: NEMA 6-20P plug type
- 5 kW auxiliary electric heater: NEMA 6-30P plug type
- Proper grounding is required.
- All electrical work must comply with local and national wiring standards (NEC and CEC in North America).
Wall Thermostat Terminal:
- Terminals: FC(L), FC(N), LOW-FAN, HI-FAN, 4-WAY, HEAT2, HEAT1, COMP, 24V(N), 24V(L).
- Recommended wire gauge: 18 to 20 gauge solid thermostat wire.
- Thermostat type must match unit type (PTHP or PTAC).
- Setpoint temperature range of the thermostat must match the unit's setpoint temperature range.
Usage Features
Control Panel Operation:
- ON/OFF Button: Powers the unit on or off.
- MODE Button: Cycles through COOL, DRY, HEAT, and FAN modes.
- COOL Mode: Cooling starts when room temperature is above setpoint, stops 4°F (2°C) below setpoint.
- DRY Mode: Unit acts as a dehumidifier with some cooling. Fan operates at low speed.
- HEAT Mode: Maximum set temperature is 84°F (29°C). Heat pump models can alternate between reverse cycle heat pump and electric heater.
- FAN Mode: Only the fan runs; displays room temperature.
- UP (+)/DOWN (-) Buttons: Adjust temperature setpoint in 1°F (1°C) increments. Holding these buttons together for three seconds toggles between °F and °C display.
- SPEED (FAN SPEED) Button: Cycles through AUTO, HIGH, LOW fan speeds. In AUTO mode, fan speed adjusts automatically. In DRY mode, fan speed is fixed at low.
- CONSTANT FAN Button: In cooling mode, toggles continuous fan operation. When ON, the fan runs continuously. When OFF, the fan cycles with the compressor.
- Panel Locking: Pressing CONSTANT FAN and ON/OFF buttons together for five seconds locks/unlocks the control panel, displaying "LL" when locked.
- LED Display: Shows set temperature or room temperature (in FAN mode).
- Display Codes:
- Control Codes: LC (wall thermostat control), FC (front desk control).
- Error Codes: EO (EEPROM failure), E3 (fan stall), E4 (main control/display communication), AS (room temp sensor), ES (evaporator temp sensor), CS (condenser temp sensor), OS (outside temp sensor), HS (exhaust temp sensor), LE (wall thermostat error).
- Other Codes: LO (room temp < 32°F), HI (room temp > 99°F), FP (low temp protection).
DIP Switch Configuration:
- S1 (Heating Type): UP (Electric Heat Only - for heat pump units when ambient temp is too low), DOWN (Electric Heat and Pump Heat).
- S2 (Temperature Display Type): UP (°F), DOWN (°C).
- S3 (Control Type): UP (Wall Thermostat Enabled), DOWN (Control Panel Enabled). S9 must be DOWN for wall thermostat.
- S4*S5 (Setpoint Limit): Combines to select restricted setpoint ranges (e.g., 61°F-86°F, 65°F-78°F, 63°F-80°F, 68°F-75°F).
- S6 (Fan CON/CYC for Heating): UP (Continuous Run), DOWN (Cycle).
- S7 (Fan CON/CYC for Cooling): UP (Continuous Run), DOWN (Cycle).
- S8 (Low Temp Protection): UP (Enabled), DOWN (Disabled). When enabled, unit warms room to 40°F (4.4°C) if room temp drops below 32°F (0°C).
- S9 (Control Panel/Wall Thermostat): UP (Use Control Panel Only), DOWN (Use Wall Thermostat Only). S3 must be UP for wall thermostat.
- S11 (Load Delay): UP (3 seconds), DOWN (Normal).
Front Desk Control: Allows remote unit shutdown for energy savings via a 24VAC switch wired to FC(L) and FC(N) terminals. Activated when SW7 DIP switch is DOWN (OFF) and "A0" setting is selected via control panel.
Maintenance Features
Air Filters:
- Cleaning Frequency: Every two weeks or as required.
- Procedure: Turn unit off, remove filters from front panel, vacuum dust, run water through filters, air dry thoroughly, then replace.
- Caution: Do NOT operate unit without filters or with damaged filters.
Front Panel and Case:
- Cleaning Procedure: Turn unit off, disconnect power, use water and mild detergent. Do NOT use bleach or abrasives. Air dry thoroughly.
Outdoor Coil:
- Inspection: Check regularly for dirt buildup.
- Cleaning: If clogged, have it professionally cleaned. Clean inside and outside regularly.
- Caution: Do NOT use high-pressure spray. Do NOT use hair/clothes dryer to speed drying.
Vent Door Filter:
- Cleaning Frequency: Twice a year or as required.
- Procedure: Remove unit from wall sleeve (front panel off, four corner screws removed, pull out), ensure shipping screw is removed, rotate vent control lever to open, remove vent door and filter (four screws, disconnect steel wire), clean filter, air dry, reinstall.
Troubleshooting:
- Provides a list of common issues, possible causes, and solutions (e.g., unit not starting, strange display characters, noises, water dripping, ice/frost on coil).
- Emphasizes contacting an authorized service provider for serious issues or repeated circuit breaker trips/blown fuses.
- Refrigerant R32 is flammable; all safety precautions must be followed during troubleshooting.
Installation:
- Requires an authorized dealer or specialist.
- Must be installed according to instructions and local/national wiring regulations.
- Requires a firm location that can support the unit's weight.
- Drainage piping must be installed correctly to prevent water damage.
- For units with auxiliary electric heaters, do not install within 3 feet (1 meter) of combustible materials.
- Do not install where exposed to combustible gas leaks or direct sea wind.
- Vent control lever allows fresh outdoor air intake (open position) or recirculation of indoor air (closed position).
Warranty:
- ONE (1) YEAR: Repair or replacement for defects in materials or workmanship.
- TWO (2) THROUGH FIVE (5) YEARS: Repair or replacement for sealed refrigerant system components (compressor, evaporator, condenser, and connecting tubing).
- Exclusions: Damage from improper installation, unauthorized service, maintenance negligence, cosmetic damage, normal wear and tear, and issues caused by improper electrical supply or accessories. Warranty is void if the unit is not installed by authorized personnel.
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