ARCHITECTS AND ENGINEERS’ MANUAL MODEL 52S PACKAGED TERMINAL AIR CONDITIONERS AND HEAT PUMPS CONTENTS Page Page APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Condensate Drain Valve. . . . . . . . . . . . . . . . . . . . . . . . . 8 Condensate Removal System. . . . . . . . . . . . . . . . . . . . . 8 Carrier Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Heat Pumps Pay Their Own Way. . . . . . . . . . . . . . . . . . 9 Heat Pump Energy Savings . . . .
APPLICATIONS Whether you are designing a new structure or replacing the packaged terminal air conditioning units in an existing building, Carrier will meet your needs. • Hotels and motels • Nursing homes and assisted living care centers • Offices • Apartments • Single-family dwellings • Home conversions and residential add-ons NEW CONSTRUCTION The Carrier 52S unit is designed to meet the needs of the architect, engineer, and contractor.
PRODUCT OVERVIEW This section summarizes product features covered in detail in later sections: Polymer Sleeve — Designed for rugged duty, acoustic absorption, and attractive appearance for years to come. Rotary Compressors — Provide quiet, reliable operation. Copper Tube Fin Coils — Enhanced coils provide durability, high performance, and ease of operation. Fresh Air Control Arm — Allows outdoor air into room through foam filter for improved air quality.
PRODUCT FEATURES AND BENEFITS The 52S model is a single-package, through-the-wall unit for heating and cooling hotel rooms, offices, apartments, condominiums, and residential additions.
NO-RUST WEATHER LAST™ WALL SLEEVE AND FRONT PANEL The indoor front panel and wall sleeve use nonmetallic compounds that never rust or corrode, do not support combustion, and do not give off toxic fumes. The weather-resistant feature exceeds requirements of Underwriters’ Laboratories and resists damage caused by impact and scratching. The Weather Last feature also insulates and has up to 10 times the acoustic absorption of metal cabinets.
PRODUCT FEATURES AND BENEFITS (cont) DURABLE CONTROL PANEL DOOR AND EASY-TO-USE CONTROLS The reinforced control door conceals controls and features an attractive surface that will not chip. The hinge and door are extruded as one piece and provide protection from demanding transient use. The door is sloped to discourage use as a shelf. Easily accessible from the room side, the control buttons and thermostat are clearly marked and simple to use.
EASY ACCESS TO CHASSIS Access to the chassis simply requires removing four screws and then sliding the chassis out of the sleeve for service. Once the power is turned off, connectors can be separated on hard-wire units, or the power cord can be disconnected on cord-connected units. Easy Service Access HIDDEN CONTROLS The factory-wired control box houses all control components and is quickly accessible without removing the chassis from the wall sleeve.
PRODUCT FEATURES AND BENEFITS (cont) ENHANCED COPPER TUBING Enhanced copper tubing is more efficient and durable and can be repaired in the field, if required. Because copper is a very stable metal, it is durable and resists corrosion.
HEAT PUMPS PAY THEIR OWN WAY Heat pump models are available at a nominal additional cost. In many locales, the payback is realized in just a few months. Cost and payback details are provided on the next page. How The Heat Pump Works In Hot Weather: In Cool Weather: In Sub-Freezing Weather: Carrier’s Series 52S series units provide indoor comfort in the same manner as conventional air conditioners, removing heat and humidity from indoor air. The heat and humidity is released to the outdoors.
PRODUCT FEATURES AND BENEFITS (cont) HEAT PUMP ENERGY SAVINGS Heat pumps save more on operating costs during the heating cycle than heat/cool models. The table below shows that the higher initial cost of purchasing a heat pump is quickly made up in lower operating costs. Use the map to identify the climate zone’s designated number. Reading down the left-hand column of the table, select the cost/kWh rate in this zone that most closely approximates your local rate.
ORDERING DATA For immediate assistance, call 1-800-827-7435. Standard 52S Unit • Chassis with front panel • Electro-mechanical pushbutton control • Cord-connected chassis for 230/208V units • 265V cord or hard-wired accessory kit (must be ordered separately) Lead-time: Most 230/208V models are in stock; call for lead-times for other models. Standard 52S Unit PRODUCT CATALOG NUMBER Cooling-only units are not available with RC (wall thermostat control) option.
ORDERING DATA (cont) FACTORY-INSTALLED OPTIONS Wall Thermostat Control (RC) Carrier’s wall thermostat control option includes: • a standard chassis with front panel • factory-installed low voltage controls for remote thermostat operation A wall thermostat must be ordered separately. NOTE: A heat/cool or heat pump thermostat is available for each application. Be sure to connect reversing valve wiring to the B connection of the thermostat for heat pump applications.
FIELD-INSTALLED ACCESSORIES Weather Last™ Wall Sleeve Part No.: WALL-SLEEVE-1PK Part No.: WALL-SLEEVE-9PK It is recommended that a Carrier sleeve be used with a Carrier chassis. However, an accessory Retrofit Kit may be ordered when fitting a new 52S unit into an existing sleeve. See Accessory Retrofit Kit for GE Sleeve on page 19 and Amana/Trane Sleeve on page 20. The Carrier accessory wall sleeve is made from a molded polymer that is designed for strength and durability.
ORDERING DATA (cont) Aluminum Architectural Outdoor Grilles (Louvered) Part No.: Part No.: Part No.: Part No.: Part No.: GRILLE-ALU-WHITE GRILLE-ALU-BRONZ GRILLE-ALU-BROWN GRILLE-ALU-BEIGE GRILLE-ALU-ALPINE (color matches Carrier wall sleeve) Part No.: GRILLE-ALU-LTGREY Part No.: GRILLE-ALU-CLEAR This premium line of decorative outdoor grilles will enhance the appearance of any building.
Outdoor Grille Selection Carrier recommends only the use of Carrier-supplied grilles for use on the 52S series units. However, the architectural designs of a building may dictate the use of special or oversized grilles and/or louvers. Special louvers or any special architectural treatment of the building façade that may restrict free circulation of condenser airflow should be referred to Carrier Corporation for evaluation and approval.
ORDERING DATA (cont) 265-V Cord-Connection Kit Part No.: PLUG-265V-15AMP Part No.: PLUG-265V-20AMP Part No.: PLUG-265V-30AMP This 265-volt cord connection kit is an alternative to a 265-volt permanent hard-wire connection. The kit contains an 18-inch cord (UL 484 Requirement) and a unit-mounted plug connection. This field-installed accessory connects easily to the right side of the unit and plugs into a receptacle in a subbase.
Lateral Duct Kit Part No.: LAT-DUCT-PLENUM (Adapter Plenum) Part No.: EXTENSION-DUCT (Extension) The accessory lateral duct kit allows one unit to heat or cool two rooms. The kit provides substantial savings for apartments, hotel suites, and office suites by eliminating the need for separate units for every room. The amount of air that can be diverted to an adjoining room is adjustable from 10 to 40 percent. The lateral duct kit consists of two separate packages, the plenum and the extension duct.
ORDERING DATA (cont) Programmable Thermostat Part No.: TSTATCCPAC01-B (for heat/cool models) Part No.: TSTATCCPHP01-B (for heat pump models) This microcomputer-controlled, programmable wall thermostat has enhanced features that provide automatic changeover control for both heat pumps and heating/ cooling units. It is used only on wall thermostat control (RC) models. NOTE: Be sure to connect reversing valve wiring to the B connection of the thermostat for heat pump applications.
Accessory Retrofit Kit for GE Sleeve Part No.: GE-RETROFIT-KIT This kit contains the items that allow owners to install a 52S chassis into a plastic or metal GE sleeve so that there is no air leakage or damage to 52S unit components. The Retrofit Kit is an accessory and must be ordered separately from the factory. To retrofit to a plastic GE sleeve, it is important to remove the rear bottom seal from the sleeve.
ORDERING DATA (cont) Accessory Retrofit Kit For Amana/Trane Sleeve IMPORTANT: Be sure that the foam baffles make a good seal between the grille and outdoor coil tube sheets. Improper installation of the foam baffles or neglecting to install them can result in condenser (outdoor) air recirculation. This will degrade the unit’s performance and shorten product life. Do not ignore this step. Carrier does not assume responsibility for costs or damages resulting from misapplication of foam baffles. Part No.
DIMENSION DRAWINGS AND INSTALLATION DATA — NEW CONSTRUCTION TYPICAL WALL INSTALLATION Proper building practices must be used when constructing a wall opening to support a PTAC wall sleeve and chassis. If practices are unknown, consult your local architect or building contractor. Installed wall sleeve must be level from side to side and front to back. 2. Wall thermostat control models (52S series ‘‘RC’’ units) use low voltage connections (24 volt) qualified with a manual changeover thermostat. NOTES: 1.
DIMENSION DRAWINGS AND INSTALLATION DATA — NEW CONSTRUCTION (cont) MINIMUM CLEARANCE FOR OUTDOOR DISCHARGE AIR 36" MINIMUM DISTANCE FROM SLEEVE TO BUILDING WALLS, SHRUBS, WALKWAY, etc. 52S Outdoor Discharge Air Circulation Blocking outdoor discharge air could cause premature failure of unit.
WALL SLEEVE MOUNTING DIMENSIONS FOR STANDARD AND ACCESSORY GRILLES Wall Sleeve Minimum Wall Sleeve Opening Wall Sleeve Mounting 23
DIMENSION DRAWINGS AND INSTALLATION DATA — NEW CONSTRUCTION (cont) 52S WITH SUBBASE SUBBASE COVER 14 7/8” 3 3/4” 8 1/2” 3 1/8” 10 3/8” (5) 7/8” DIA. KNOCKOUTS (5) 1 1/8” DIA. KNOCKOUTS 4 3/4” NOTES: 1. For all applications with an accessory subbase: • Wall sleeve must extend 4 in. minimum into the room and 31/4 in. minimum above the floor. • Subbase height is adjustable from 31/4 in. minimum to 51/2 in. maximum above floor (including carpeting). Refer to wall sleeve installation instructions. 2.
TYPICAL WALL AND DEEP WALL INSTALLATION NOTES: 1. Sleeve may be flush mounted to floor, but front panel may have to be notched to accommodate service cord. 2. If more than 4 in. of sleeve projects into room, an accessory subbase must be used for support. 3. For walls 2 in. thick or less, an accessory subbase must be used for support. Typical Wall Installation NOTES: 1.
DIMENSION DRAWINGS AND INSTALLATION DATA — NEW CONSTRUCTION (cont) NOTES: 1. Unit sleeve and sleeve extension (field fabricated) should be connected before installing in wall opening. 2. Sleeve extension is water bearing. It must be watertight when installed against unit sleeve. Use quality grade sealant on all butting flanges. Attach both sections with bolts and nuts or self-tapping screws installed from unit sleeve to extension.
PRODUCT DATA PERFORMANCE AND ELECTRICAL DATA MODEL 52SQ (230/208 V) MODEL NUMBER 52SQD207---3 52SQD307---3 52SQE209---3 52SQE309---3 52SQC212---3 52SQC312---3 52SQC512---3 52SQC214---3 52SQC314---3 52SQC514---3 MODEL NUMBER 52SQD207---3 52SQD307---3 52SQE209---3 52SQE309---3 52SQC212---3 52SQC312---3 52SQC512---3 52SQC214---3 52SQC314---3 52SQC514---3 AMPS CAPACITY* (Btuh) VOLTAGE HEATER Heating EER COP† RANGE kW Cooling Cooling Heating** (Volts) Rev. Cyc. Electric 2.9/3.1 10.6/ 9.
PRODUCT DATA (cont) PERFORMANCE AND ELECTRICAL DATA MODEL 52SQ (265 V) MODEL NUMBER 52SQD207---4 52SQD307---4 52SQE209---4 52SQE309---4 52SQC212---4 52SQC312---4 52SQC512---4 52SQC214---4 52SQC314---4 52SQC514---4 MODEL NUMBER 52SQD207---4 52SQD307---4 52SQE209---4 52SQE309---4 52SQC212---4 52SQC312---4 52SQC512---4 52SQC214---4 52SQC314---4 52SQC514---4 CAPACITY* (Btuh) HEATER Heating kW Cooling Rev. Cycle Electric 7,100 6,000 7,800 2.3 7,100 6,000 11,600 3.4 9,000 8,000 7,800 2.3 9,000 8,000 11,600 3.
PERFORMANCE AND ELECTRICAL DATA MODEL 52SE (230/208 V) MODEL NUMBER 52SEE207---3 52SEE307---3 52SEE209---3 52SEE309---3 52SEC212---3 52SEC312---3 52SEC512---3 52SEC214---3 52SEC314---3 52SEC514---3 MODEL NUMBER 52SEE207---3 52SEE307---3 52SEE209---3 52SEE309---3 52SEC212---3 52SEC312---3 52SEC512---3 52SEC214---3 52SEC314---3 52SEC514---3 CAPACITY* (Btuh) AMPS WATTS HEATER VOLTAGE EER kW RANGE Cooling Heating† Cooling Heating Cooling Heating 7,100/ 7,000 7,800/ 6,400 11.0/11.1 2.3 2.8/3.0 10.6/ 9.
PRODUCT DATA (cont) PERFORMANCE AND ELECTRICAL DATA MODEL 52SE (265 V) MODEL NUMBER 52SED207---4 52SED307---4 52SEE209---4 52SEE309---4 52SEC212---4 52SEC312---4 52SEC512---4 52SEC214---4 52SEC314---4 52SEC514---4 MODEL NUMBER 52SED207---4 52SED307---4 52SEE209---4 52SEE309---4 52SEC212---4 52SEC312---4 52SEC512---4 52SEC214---4 52SEC314---4 52SEC514---4 CAPACITY* (Btuh) Cooling Heating 7,100 7,800 7,100 11,600 9,100 7,800 9,100 11,600 12,000 7,800 12,000 11,600 12,000 17,000 13,700 7,800 13,700 11,600 13
PERFORMANCE AND ELECTRICAL DATA MODEL 52SC (230/208 V) MODEL NO. 52SCD007---3 52SCE009---3 52SCD012---3 52SCC014---3 COOLING CAPACITY* (Btuh) 7,100/ 7,000 9,100/ 9,100 11,800/11,600 13,500/13,200 EER VOLT RANGE AMPS COOLING WATTS COOLING 11.0/11.1 9.3/ 9.3 9.0/ 9.0 8.8/ 8.8 253-198 2.8/3.0 4.4/4.6 5.9/6.3 6.8/7.3 645/ 628 979/ 979 1,310/1,288 1,530/1,500 MODEL NO. 253-187 253-198 Horsepower 52SCD007---3 52SCE009---3 52SCC012---3 52SCC014---3 MODEL NO.
PRODUCT DATA (cont) PERFORMANCE AND ELECTRICAL DATA MODEL 52SC (265 V) MODEL NO. 52SCD007---4 52SCE009---4 52SCD012---4 52SCC014---4 COOLING CAPACITY* (Btuh) 7,100 9,100 12,000 13,700 EER 11.0 9.5 9.2 9.0 MODEL NO. 52SCD007---4 52SCE009---4 52SCC012---4 52SCC014---4 MODEL NO. 52SCD007---4 52SCE009---4 52SCD012---4 52SCC014---4 MAX. FUSE SIZE (AMPS) MIN. CIRCUIT AMPS 15 4.0 5.6 6.5 8.1 VOLT RANGE AMPS COOLING WATTS COOLING 292-239 2.7 3.8 5.2 5.9 645 958 1,304 1,522 FAN MOTOR Full Load Amps 0.
EXPANDED RATINGS DATA COOLING PERFORMANCE — 52SC, SE, SQ 7000 AND 9000 BTU MODELS (230 AND 265 V) ALL 7000 NOMINAL BTUH MODELS Evaporator entering air temp. — 80 F Evap. air — 280 CFM TEMP. (F) AIR ENT. COND. (40% RH) MBtuh kW I MBtuh kW I MBtuh kW I MBtuh kW I MBtuh kW I MBtuh kW I MBtuh kW I MBtuh kW I 80 85 90 95 100 105 110 115 57.00 7.11 0.58 2.06 6.92 0.61 2.17 6.74 0.64 2.28 6.56 0.66 2.39 6.33 0.69 2.53 6.11 0.73 2.66 5.90 0.75 2.79 5.66 0.79 2.92 EVAP. AIR — EWB (F) 62.00 67.00 7.12 7.86 0.58 0.
PRODUCT DATA (cont) EXPANDED RATINGS DATA (cont) HEAT PUMP HEATING PERFORMANCE* OUTDOOR TEMP (F) 70 65 60 55 50 47 (RATING POINT) 45 40 35 MODEL 52SQ (230V) Btuh 9,290 8,510 7,960 7,280 6,790 7000 Nominal Btuh Amps 2.4 2.3 2.2 2.2 2.2 Watts 657 648 632 622 607 Btuh 11,300 10,700 9,860 9,130 8,320 9000 Nominal Btuh Amps 4.8 4.6 4.4 4.2 4.0 6,100 2.1 597 8,000 3.9 840 6,050 5,550 4,930 2.1 2.1 2.0 590 583 577 7,680 6,990 6,430 3.8 3.6 3.
INDOOR SOUND DATA The table below indicates the approximate indoor sound level of a 52S unit. Tests were conducted in the Carrier Sound Testing Laboratory according to ARI (Air Conditioning and Refrigeration Institute) Noise Rating Standard 300 for non-ducted indoor airconditioning equipment. INDOOR SOUND ESTIMATING TABLE — ARI 300 NR (BELS) OPERATING MODE FAN LO COOL HI COOL LO HEAT HI HEAT NOMINAL SIZES (Btuh) VOLTS 230 208 265 230 208 265 230 208 265 230 208 265 230 208 265 7,000 5.2 4.9 4.7 5.6 5.3 5.
WIRING DIAGRAMS LEGEND CAP COMP FCS FM HTR IT L OFT OL PL PLS RVS — — — — — — — — — — — — Capacitor Compressor Fan Cycle Switch Fan Motor Heater Indoor Thermostat Power Supply Line Outdoor Frost Thermostat Overload Plug Primary Limit Switch Reversing Valve Solenoid SLS — Secondary Limit Switch ST — Start Thermistor SW — Switch Component Connection (Marked) Component Connection (Unmarked) Accessory or Optional Wiring Factory Wiring To Indicate Common Potential Only Not to Represent Wire NOTES: 1.
LEGEND CAP COMP CR EQUIP GND FM FR HR IFT L OFT OL — — — — Capacitor Compressor Cooling Relay Equipment Ground — — — — — — — Fan Motor Fan Relay Heating Relay Indoor Frost Thermostat Power Supply Line Outdoor Frost Thermostat Overload PL PLS RVR RVS SLS SSS ST TB TRANS — — — — — — — — — Plug Primary Limit Switch Reversing Valve Relay Reversing Valve Solenoid Secondary Limit Switch Speed Selector Switch Start Thermistor Terminal Board Transformer Component Connection (Marked) Component Connection (Un
WIRING DIAGRAMS (cont) LEGEND CAP COMP FCS FM HTR IT L LS OL PL PLS SLS — — — — — — — — — — — — Capacitor Compressor Fan Cycle Switch Fan Motor Heater Indoor Thermostat Power Supply Line Limit Switch Overload Plug Primary Limit Switch Secondary Limit Switch ST SW — Start Thermistor — Switch Component Connection (Marked) Component Connection (Unmarked) Accessory or Optional Wiring Factory Wiring To Indicate Common Potential Only Not to Represent Wire NOTES: 1.
LEGEND CAP COMP CR EQUIP GND FM FR HR IFT L OL PL PLS — — — — Capacitor Compressor Cooling Relay Equipment Ground — — — — — — — — Fan Motor Fan Relay Heating Relay Indoor Frost Thermostat Power Supply Line Overload Plug Primary Limit Switch SLS SSS ST TB TRANS — — — — — Secondary Limit Switch Speed Selector Switch Start Thermistor Terminal Board Transformer Component Connection (Marked) Component Connection (Unmarked) Terminal Board Connection Field Ground Wiring Field Control Wiring Accessory or Op
WIRING DIAGRAMS (cont) FRONT DESK SWITCH PANEL ROOM 100 ROOM 101 ROOM N 24-V TRANSFORMER (SEE NOTE) G W PTAC #1 G W G W PTAC #N PTAC #2 LEGEND AWG — American Wire Gage PTAC — Packaged Terminal Air Conditioner NOTES: 1. To size transformer, use the following equation: Quantity of PTAC units x 12 va = Transformer Size (va) Example: 110 PTAC Units x 12 va = 1320 va Transformer 2. Following are recommended wire sizes: AWG WIRE SIZE NO.
GUIDE SPECIFICATIONS PACKAGED TERMINAL COOLING UNIT WITH HEAT PUMP OR ELECTRIC HEATING HVAC Guide Specifications Size Range: F. Refrigerant Components: All piping, compressor, and expansion devices shall be included. G. Controls and Safeties: 1. Controls shall consist of pushbutton OFF/ FAN/ HEAT/COOL adjustable thermostat with upper and lower limits, VENT OPEN/CLOSE, and FAN CYCLE switches. Additional controls for heat pumps include outdoor coil defrost thermostat. 2.
GUIDE SPECIFICATIONS (cont) 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. L. Special Features: Certain standard features are not applicable when the features designated are specified. Contact your local Carrier Sales Office for amending specifications. 1. Factory-installed electric heater for use with heat pump or heat/cool units 2. RC — Wall thermostat control permits unit control from remote thermostat 3. Standard grille (aluminum) 4. Architectural grille (polymeric or aluminum) 5.
NOTE: Service and Maintenance items excluded in this warranty may be covered by a separate service agreement through the seller at the time of purchase. 11. ANY SPECIAL, INDIRECT OR CONSEQUENTIAL PROPERTY OR COMMERCIAL DAMAGE OF ANY NATURE WHATSOEVER. Some states do not allow the exclusion or limitation of incidental or consequential damages, so that above limitation or exclusion may not apply to you. 10. Shipping damage or damage as a result of transporting the unit.
2. CONTACT YOUR DEALER OR THE CARRIER AUTHORIZED SERVICE CENTER HE RECOMMENDS. They have been set up to handle the great majority of all possible service problems. The quickest, surest and best way to get your air conditioner back in service is to use this step before proceeding further. 1. CHECK THE THINGS YOU CAN DO YOURSELF.
LITERATURE LIST FORM NO. Warranty certificate CATALOG NO.
