Page 2 - Performance Features Include:; Maintenance Features Include:
2 TABLE OF CONTENTS FEATURES AND BENEFITS 2 . . . . . . . . . . . . . . . . . . . . . . . . . . UNIT SUMMARY 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DISPLACEMENT VENTILATION SUMMARY 3 . . . . . . . . . . SINGLE--ZONE VAV SUMMARY 3 . . . . . . . . . . . . . . . . . . ....
Page 3 - UNIT SUMMARY; DISPLACEMENT VENTILATION; More consistent space conditioning
3 UNIT SUMMARY There are two key elements that separate a Centurion PD unit fromother Centurion units; the use of a variable speed fan and a modulating compressor. The modulating compressor allows the fanspeed to slow down without the refrigerant coil freezing during low load, and also allows for va...
Page 4 - MODEL NUMBER NOMENCLATURE
4 MODEL NUMBER NOMENCLATURE 48PD 6 06 Product Series 48PD --- Single Packaged Rooftop Unit with PURON R Gas Heat,Variable capacity compressor and variable speed indoor fan Nominal Capacity --- Tons 05 --- 4 Tons 06 --- 5 Tons C Control Options --- --- None A --- CO 2 Sensor B --- Return air smoke de...
Page 5 - AHRI CAPACITY RATINGS
5 AHRI CAPACITY RATINGS UNIT 48PD NOMINAL CAPACITY (Tons)* COOLING CAPACITY (MBtuh) SEER EER RATED CFM SOUND RATING (dB) 05 4 47,500 15.2 12.55 1,600 72 06 5 58,500 14.65 12.25 1,750 78 * Nominal cooling tons shown is the maximum design capacity value.LEGEND AHRI --- Air Conditioning, Heating and Re...
Page 6 - GAS HEATING CAPACITIES AND EFFICIENCIES; NG Altitude Compensation* — 48PD
6 GAS HEATING CAPACITIES AND EFFICIENCIES Vertical and Horizontal Supply Units with Natural Gas (Three Phase) 48PD HEATING INPUT Stage 2 (Btuh) HEATING INPUT Stage 1 (Btuh) OUTPUT CAPACITY Stage 2 (Btuh) TEMPERATURE RISE Min --- Max (F) MINIMUM HEATING CFM** THERMAL EFFICIENCY (%) Standard Stainless...
Page 7 - PHYSICAL DATA
7 PHYSICAL DATA BASE UNIT 48PD 05 06 NOMINAL CAPACITY (Tons) 4 5 OPERATING WEIGHT (lb)* Base Unit 901 921 Economizer Vertical 40 40 Horizontal 50 50 Roof Curb 14-in. 122 122 24-in. 184 184 REFRIGERANT SYSTEM Refrigerant Puron ® (R --- 410A) Refrigerant Metering Device Balanced --- Port TXV with Bypa...
Page 9 - FIOP AND ACCESSORY TABLE
9 FIOP AND ACCESSORY TABLE CATEGORY ITEM STANDARD FEATURE OPTION* ACCESSORY { Cabinet Hinged Access Panels X X Thru --- the --- Bottom Connections Gas X Thru --- the --- Bottom Connections Electrical X X Coil Options Copper Fins --- condenser coil X Copper Fins --- evaporator and condenser coil X E ...
Page 10 - ACCESSORY WEIGHT ADDERS
10 ACCESSORY WEIGHT ADDERS ACCESSORY WEIGHTS OPTION/ACCESSORY WEIGHTS 05 06 lb kg lb kg 2 --- Position Damper 30 14 30 14 4 --- in Filter Capability NO ADDITIONAL WEIGHT Barometric Relief Damper NO ADDITIONAL WEIGHT CO 2 Sensor 5 2 5 2 Cu Condenser and Evaporator Coils 175 79 175 79 Cu Condenser Coi...
Page 11 - BASE UNIT DIMENSIONS
Page 12 - ROOF CURB
Page 13 - SELECTION PROCEDURE
13 SELECTION PROCEDURE I. Determine cooling and heating requirements at design conditions . Given the following data: S Vertical or horizontal supply/return configuration S Evaporator air quantity (CFM) S External duct static pressure (in.wg) S Electrical characteristics (Volts--Ph--Hz) S Cooling Re...
Page 14 - MAXIMUM COOLING CAPACITY
14 MAXIMUM COOLING CAPACITY 48PD05 Temp (F) Air Ent Condenser (Edb) Air Entering Evaporator — Cfm 1200 1600 2000 Air Entering Evaporator — Ewb (F) 80 76 72 67 62 58 54 80 76 72 67 62 58 54 80 76 72 67 62 58 54 60 TC 66.6 62.4 58.4 53.6 49.1 45.7 44.5 70.5 66.2 61.9 57.0 52.3 49.2 49.2 72.9 68.3 64.1...
Page 16 - FAN PERFORMANCE; Vertical Supply/Return
16 FAN PERFORMANCE Vertical Supply/Return 48PD05 (High Heat Units) AIRFLOW (Cfm) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 0.2 0.4 0.6 0.8 1.0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 1200 520 0.17 628 0.24 723 0.33 811 0.41 892 0.51 1300 545 0.20 648 0.28 739 0.37 823 0.46 902 0.56 1400 570 0.24 6...
Page 17 - Horizontal Supply/Return
17 FAN PERFORMANCE (CONT) Horizontal Supply/Return 48PD05 (High Heat Units) AIRFLOW (Cfm) AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) 0.2 0.4 0.6 0.8 1.0 Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp 1200 456 0.13 574 0.20 675 0.28 766 0.37 850 0.46 1300 477 0.16 591 0.23 688 0.32 776 0.41 857 0.50 1400 5...
Page 18 - GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES
18 GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES 1. Static pressure losses from accessories and options (Humidi-MiZer ™ system, economizer, etc.) must be added to external static pressure before entering Fan Performancetable. 2. Interpolation is permissible. Do not extrapolate.3. Fan performance is ...
Page 19 - INDOOR FAN DATA
19 INDOOR FAN DATA 48PD Fan Motor and Drive Data --- Vertical Supply/ReturnUNIT SIZE 05 06 Voltage 208/230 and 460 208/230 and 460 LOW STATIC DRIVE OPTION Motor HP 2.4 2.4 Motor Nominal RPM 1725 1725 Maximum Continuous BHP 2.0 2.0 Maximum Continuous Watts 2000 2000 Motor Frame Size 56HZ 56HZ Motor S...
Page 20 - ELECTRICAL DATA; 8PD05--06 Without Powered Convenience Outlet; 8PD05--06 With Powered Convenience Outlet
20 ELECTRICAL DATA 48PD05--06 Without Powered Convenience Outlet 48PD UNIT SIZE NOMINAL POWER SUPPLY V- PH- HZ VOLTAGE RANGE COMPRESSOR OFM COMBUST. FAN MOTOR FLA CONV OUTLET POWER EXH FLA (ea) IFM TYPE IFM FLA POWER SUPPLY DISCONNECT SIZE Min Max RLA LRA Qty FLA (ea) MCA MOCP FLA LRA 05 208/230--3-...
Page 21 - WIRING DIAGRAMS
Page 23 - SEQUENCE OF OPERATION; General; NOTE; Cooling Mode Using Space Temperature Sensors:; Cooling Supply Air Setpoint; Time; Temperature
23 SEQUENCE OF OPERATION General The 48PD rooftop units use Puron r (R--410A) refrigerant and ComfortLink t DDC controls. The PD units are intended to be used in a either a displacement ventilation or a single--zone variableair volume application. The PD unit includes a factory installed variable ca...
Page 24 - Cooling Mode with Economizer Using Space; SASP; Supply Air Temperature
24 Reset of the Cooling Supply Air Set Point is set by theconfiguration variables SASP Maximum Reset Down (SASPMAXD) and SASP Maximum Reset Up (SASPMAXU).The SASP Maximum Reset Down (SASPMAXD) configuration variable can be set from --20 _ to 0 _ F and will allow the Supply Air Temperature to be Rese...
Page 25 - Heating Mode Using Space Temperature Sensor; Economizer Position %
25 Cooling Mode Using Space Temperature Sensor T55, T56 or T58 and Humidistat Enhanced dehumidification can be provided when a humidistat(HL38MG029, TSTATCCPLH01--B or 33CS2PPRH--01) is connected. When the humidistat contacts close and provide a 24VAC signal, the unit will reset the supply air tempe...
Page 26 - APPLICATION DATA; IMPORTANT; Manual and Two Position Dampers
26 APPLICATION DATA Ductwork Ductwork should be attached to the curb on all units. Ductworkshould NOT be attached to the unit. Interior installation may be placed before unit is set in place on roof. Thru--the--Bottom Service Connections Roof curb connections allow field power wires and control wire...
Page 28 - GUIDE SPECIFICATIONS; Carrier Model Numbers:
28 GUIDE SPECIFICATIONS Packaged Rooftop Electric Cooling Unit with Gas Heat, Variable Capacity, Variable Air Volume Cooling Constant Air Volume Heating with Puron r R--410A Refrigerant and Comfort Link t Controls Cooling Size Range: 4 to 5 Tons, Nominal Cooling 48,000 to 60,000 Btuh Heating Size Ra...
Page 29 - G. Refrigerant Components
29 3. Induced--draft blower shall be of the direct driven, single inlet, forward--curved, centrifugal type. It shall be made from aluminized steel with a corrosion--resistant finish andshall be dynamically balanced. D. Compressor(s) 1. Fully hermetic, digital scroll type with capacity modulation acc...
Page 30 - I. Controls and Safeties; J. Operating Characteristics
30 H. Filter Section 1. Standard filter section shall consist of factory installed 2--in. thick disposable fiberglass filters and shall be on a dedicatedslide out track to easily facilitate access and replacement. 2. Filter section shall use standard size filters and be of common sizes within cabine...
