Resumen del contenido incluido en la página 1
524J
PACKAGED AIR--HANDLING UNITS, 60 Hz
R
WITH PURON (R--410A) REFRIGERANT
SIZES 25, 28, 30
Installation, Start--Up
and Service Instructions
Coil Removal .............................. 22
TABLE OF CONTENTS
Cleaning Cooling Coil ....................... 22
SAFETY CONSIDERATIONS ................... 1
Cleaning Insulation ......................... 22
PRE--INSTALLATION ......................... 2
Replacing Filters ........................... 22
Moving and Storage .......................... 2
START--U
Resumen del contenido incluido en la página 2
PRE--INSTALLATION ! WARNING 1. The power supply (v, ph, and Hz) must correspond to that specified on unit rating plate. ELECTRICAL SHOCK HAZARD 2. The electrical supply provided by the utility must be Failure to follow this warning could cause in personal sufficient to handle load imposed by this unit. injury or death. 3. Refer to Installation, General section (page 2) and Before performing service or maintenance operations Fig. 1 and Fig. 2 for locations of electrical inlets, con- on unit, alwa
Resumen del contenido incluido en la página 3
Table 1A — 524J***A Physical Data, English — Cooling Units UNIT524J* 25A 28A 30A NOMINALCAPACITY (Tons) 20 25 30 OPERATINGWEIGHT(lb) BaseUnitwithTXV 730 1050 1062 Plenum 225 325 325 FANS Qty...Diam.(in.) 2...15 2...18 2...18 NominalAirflow(cfm) 8000 10000 12000 AirflowRange(cfm) 6000– 10000 7500– 12500 9000– 15000 NominalMotorHp(StandardMotor) 208/230---3---60and460---3---60 5.0 7.5 10.0 575---3---60 5.0 7.5 10.0 MotorSpeed(rpm) 208/230---3---60and460---3---60 1745 1745 1745 575---3---60 1745 17
Resumen del contenido incluido en la página 4
Table 1B —524J***A Physical Data, SI — Cooling Units UNIT524J* 25A 28A 30A NOMINALCAPACITY (kW) 70 87 105 OPERATINGWEIGHT(kg) BaseUnitwithTXV 331 477 482 Plenum 102 148 148 FANS Qty...Diam.(mm) 2...381 2...457 2...457 NominalAirflow(L/s) 3775 4119 5663 AirflowRange(L/s) 2831– 4719 3539– 5899 4247– 7079 NominalMotorkW(StandardMotor) 208/230---3---60and460---3---60 3.73 5.60 7.46 575---3---60 3.73 5.60 7.46 MotorSpeed(r/s) 208/230---3---60and460---3---60 29.1 29.1 29.1 575---3---60 29.1 29.3 29.3
Resumen del contenido incluido en la página 5
Table 1C — 524J*25H Physical Data, English — Heat Pump Units UNIT524J* 25H NOMINALCAPACITY (Tons) 20 OPERATINGWEIGHT(lb) BaseUnitwithTXV 720 Plenum 140 FANS Qty...Diam.(in.) 2...15 NominalAirflow(cfm) 8000 AirflowRange(cfm) 6000---10000 NominalMotorHp(StandardMotor) 208/230---3---60and460---3---60 5.0 575---3---60 5.0 MotorSpeed(rpm) 208/230---3---60and460---3---60 1745 575---3---60 1745 REFRIGERANT R---410A Operatingcharge(lb) 3.5/3.5 (approxpercircuit)* DIRECT---EXPANSIONCOIL Enhanced CopperTu
Resumen del contenido incluido en la página 6
Table 1D — 524J*25H Physical Data, SI — Heat Pump Units UNIT524J* 25H NOMINALCAPACITY (kW) 70 OPERATINGWEIGHT(kg) BaseUnitwithTXV 326 Plenum 44 FANS Qty...Diam.(mm) 2...381 NominalAirflow(L/s) 3775 AirflowRange(L/s) 2831---4719 NominalMotorkW(StandardMotor) 208/230---3---60and460---3---60 3.73 575---3---60 3.73 MotorSpeed(r/s) 208/230---3---60and460---3---60 29.1 575---3---60 29.1 REFRIGERANT R---410A Operatingcharge(kg) 1.59/1.59 (approxpercircuit)* DIRECT---EXPANSIONCOIL Enhanced CopperTubes,A
Resumen del contenido incluido en la página 7
LEGEND TXV — Thermostatic Expansion Valve NOTES: 1. Dimensions in [ ] are in millimeters. 2. Direction of airflow. 3. Recommended clearance: • Rear: 3 in. [914 mm] (2 ft, 6 in. [762 mm] with electric heat accessory) � Front: 2 ft, 6 in. [762 mm] � Right Side: 2 ft, 6 in. [762 mm] � Left Side: 2 ft, 6 in. [762 mm] � Local codes or jurisdiction may prevail. 4. Liquid piping not supplied by Carrier. 5. Duct flange is factory supplied and field installed. UNIT WEI
Resumen del contenido incluido en la página 8
LEGEND TXV — Thermostatic Expansion Valve NOTES: 1. Dimensions in [ ] are in millimeters. 2. Direction of airflow. 3. Recommended clearance: � Rear: 3 in. [914 mm] (2 ft, 6 in. [762 mm] with electric heat accessory) � Front: 2 ft, 6 in. [762 mm] � Right Side: 2 ft, 6 in. [762 mm] � Left Side: 2 ft, 6 in. [762 mm] � Local codes or jurisdiction may prevail. 4. Liquid piping not supplied by Carrier. 5. Duct flange is factory supplied and field installed. 6. 40RUS
Resumen del contenido incluido en la página 9
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 5 2 4 J E 2 5 A 0 0 0 A 2 0 A A A _____________ ____ Model Type Packaging 524J = Bryant Fan Coil A=Standard Puronr R---410A Refrigerant Not Used A = Not Used Voltage E = 460/3/60 Service Options P = 208 / 230/3/60 A=None T = 575/3/60 B = Painted Cabinet Nominal Tonnage Not Used 25 = 20 Tons 0 = Not Used 28 = 25 Tons Indoor Fan Options 30 = 30 Tons 1 = Fan Drive and Motor - Low / Motor Efficency - Standard Type of Coil 2 = Fan Drive and Motor - Med / Moto
Resumen del contenido incluido en la página 10
Typical positioning and alternate return air locations are preferred suspension technique. The unit needs support shown in Fig. 6. Alternate return air locations can be used underneath to prevent sagging. by moving the unit panel from the alternate return air IMPORTANT: Do NOT attempt to install unit with return location to the standard return air location. Refer to air entering top panel of unit. Condensate will not drain from overhead suspension accessory drawing (Fig. 7) for unit. OVERHEAD SU
Resumen del contenido incluido en la página 11
Unit Isolation -- Where extremely quiet operation is The 524J direct- -expansion units have internal essential, install isolators between floor and base of unit, factory- -installed thermostatic expansion valves (TXVs), or between ceiling and top section of unit. distributors, and nozzles for use with R- -410A. See Table 2 for part numbers. Knockouts are provided in the unit corner Be sure that unit is level and adequately supported. Use posts for 524J refrigerant piping. See Fig. 8, which also
Resumen del contenido incluido en la página 12
EQUALIZER LINE TXV UPPER SENSING SPLIT BULB SOLENOID VALVE SIGHT TXV AIRFLOW GLASS 15 DIAMS 10 MIN DIAMS 8 DIAMS MIN EQUALIZER LINE FILTER TXV DRIER SENSING LOWER BULB SPLIT TXV AIRFLOW 15 DIAMS MIN 10 DIAMS 8 DIAMS MIN INDOOR COIL LEGEND: TXV – Thermostatic Expansion Valve NOTE: Component location arrangemetshown for field installation of sight glasses, solenoid valves, filter driers, and TXV sensing bulbs. The TXVs and equilizer lines are factory installed. C10726 Fig. 9 -- Face--Split Coil
Resumen del contenido incluido en la página 13
Table 2 – Factory--Installed Nozzle and Distributor Data FEEDER TUBES COILTYPE TXV DISTRIBUTOR NOZZLE ] UNIT PER DISTRIBUTOR STD Qty...PartNo. Qty...PartNo. Qty...PartNo. Qty...Size (in.) 3 3 524J*25A 4Row 2...BBIZE---8---GA 2...D196---18--- / 18... / 2...G6 16 16 3 524J*28A 4Row 2...BBIZE---15---GA 2...1126 20... / 2...C15 16 3 524J*30A 4Row 2...BBIZE---15---GA 2...1126 24... / 2...C17 16 3 3 524J*25H 4Row 2...BBIZE---12.5---GA 2...113---12--- / 2---12... / 2...G8 16 16 ] 1 Feeder tube size is
Resumen del contenido incluido en la página 14
Table 3 — Fitting Requirement (cont) ] † UNIT ACCESSHOLENO. CONNECTIONTYPE CIRCUIT FITTINGSREQUIRED (in.) 3 1 / StreetElbow 8 3 1 / Nipple,3L 1 Suction Lower 8 3 1 / Long RadiusElbow 8 5 / StreetElbow 8 5 3 / Nipple,7 / L 2 Liquid Lower 8 4 5 / Long RadiusElbow 8 5 / StreetElbow 524J*30A 8 5 1 / Nipple,18 / L 3 Liquid Upper 8 2 5 / Long RadiusElbow 8 3 3 1 / Nipple,4 / L 8 16 3 1 / Long RadiusElbow 8 4 Suction Upper 3 1 1 / Nipple,19 / L 8 4 3 1 / Long RadiusElbow 8 ] See Fig. 8 for access hole
Resumen del contenido incluido en la página 15
21 22 23 Fan Motors and Drives -- Motor and drive packages are Install disconnect switch and power wiring in accordance factory installed in all units. The motor and drive with all applicable local codes. See Fig. 14--16 and the 1 packages consist of the following items: unit label diagram. Connect power wiring with / -- i n. 4 ring terminal. 1 — fan motor 1 — adjustable motor pulley FAN SCROLL FAN CONTACTOR BOX 1—fan pulley MOTOR WIRE AND DRIVE 2 — matched fan belts (524J*25A--30A units) ACCESS
Resumen del contenido incluido en la página 16
Table 4 – Electrical Data, Standard Motors FANMOTOR POWERSUPPLY VOLTAGE { UNIT V---PH---Hz Minimum LIMITS Hp(kW) FLA MOCP CircuitAmps 208/230---3---60 187---253 5.0(3.73) 14.7/13.6 18.4/17.0 30/25 524J*25A 460---3---60 414---506 5.0(3.73) 6.8 8.5 15 524J*25H 575---3---60 518---632 5.0(3.73) 5.1 6.4 15 208/230---3---60 187---253 7.5(5.59) 21.4/19.4 26.9/24.3 45/40 460---3---60 414---506 7.5(5.59) 9.7 12.1 20 524J*28A 575---3---60 518---632 7.5(5.59) 7.8 9.8 15 208/230---3---60 187---253 10.0(7.46
Resumen del contenido incluido en la página 17
C10695 Fig. 17 -- Unit Wiring Table 6 – Fan Contactor Coil Data installation. Using the existing screws, install the duct flanges on the unit’s fan deck. Each fan discharge requires UNIT VOLTAGE MAXIMUM 2 flanges; each flange must be bent in the middle to 524J* (vac) HOLDINGVA conform to the discharge opening. See Fig. 19. After 25A,25H,28A,30A 24 10 flanges are installed, connect them to the supply duct using a canvas connection to prevent vibration. It is important that this connection be prop
Resumen del contenido incluido en la página 18
C10696 Fig. 18 -- Typical Fan Discharge Connections for Multiple Fan Units C10697 Fig. 19 -- Duct Flange Installation 18 524J
Resumen del contenido incluido en la página 19
2. To increase superheat, turn the stem clockwise. To de- START--UP crease the superheat, turn the stem counterclockwise. Before starting unit, check the following and correct as Do not turn the stem more than one full turn. necessary: 3. Wait until suction pressure and superheat stabilize. This may take more than 30 minutes. S Is unit solidly supported? 4. Continue adjustment until superheat reaches 10_Fto S Is fan adjusted for speed and pulley alignment? 15_F (5.5_Cto8.3_C). S Are pulleys, mot
Resumen del contenido incluido en la página 20
Fan Motor Lubrication -- Fan motor supplied with unit is Centering Fan Wheel -- If fan and fan shaft assembly are permanently lubricated and requires no further not properly centered, blades may scrape against the lubrication. blower side scroll plate or may create an objectionable whistling noise. It may be necessary to adjust individual Fan Shaft Bearings -- Size 25--30 units have pillow--block fan wheels or move entire fan shaft. See the following two bearings (Fig. 22) that must be lubricate
