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CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . 1
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
Step 1 - Complete Pre-Installation Checks . . . . . . 1
Step 2 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . 2
Splitting a 50BYN024. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Unit Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Vibration Isolation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 3 - Install Accessories . . . . . . . . . . . . . . . . . . . . . 2
Step 4 - Install Ductwork . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 6 - Complete Electrical Connections. . . . . . 13
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-20
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Compressor Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Operating Sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20, 21
Cleaning Evaporator and Condenser Coils . . . . . . 20
Lubrication. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Condenser Fan Adjustment . . . . . . . . . . . . . . . . . . . . . 20
Pulley Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Belt Tension Adjustment . . . . . . . . . . . . . . . . . . . . . . . . 20
Changing Fan Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Fan Bearing Replacement . . . . . . . . . . . . . . . . . . . . . . . 20
Concentric Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21, 22
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Air Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Checking System Charge . . . . . . . . . . . . . . . . . . . . . . . 21
Access Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Evaporator-Fan Motor Removal . . . . . . . . . . . . . . . . . 22
Pressure Relief Device . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Cycle-LOC™ Protection Device . . . . . . . . . . . . . . . . . 22
Time Guard® II Control . . . . . . . . . . . . . . . . . . . . . . . . . . 22
High and Low Pressurestats . . . . . . . . . . . . . . . . . . . . 22
Oil Charge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . 23-25
START-UP CHECKLIST . . . . . . . . . . . . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning com-
ponents and equipment can be dangerous. Only trained, quali-
fied installers and service mechanics should install, start-up,
and service this equipment.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the equip-
ment. Follow all safety codes. Wear safety glasses and work
gloves.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
PC 111
Catalog No. 535-050
Book 1
4
Tab
2b 7a
Installation, Start-Up and
Service Instructions
Page
Printed in U.S.A.
ECOZONE Vertical Single Package
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
Use care in handling, rigging, and setting bulky equipment.
ECOZONE indoor package units are designed to provide
the flexibility required in replacement, renovation, and new
construction. Units are available in 6 sizes from 5 tons to
20 tons. Belt-drive condensers provide adequate static to over-
come ducting and louver static losses. This allows units to be
positioned against an existing window or wall louver, or ducted
to the outside as required.
Convenient rear connections allow easy access for outside
air connections and air side economizer. Unit supply air
discharge may be vertical or horizontal front. These packaged
vertical packaged units are fully piped and wired. Units are
complete with a belt drive evaporator section and built-in
ducted air-cooled condenser. Airflow is horizontal or vertical.
All units are designed to fit through most standard doors.
The 20 ton size may be easily field split to simplify moving the
units into existing buildings. See Fig. 1-3 for unit dimensions
and refer to Table 1 for unit operating weights.
INSTALLATION
ECOZONE 50BY units are intended for indoor installation
only. Determine building alterations required to run piping,
wiring and ductwork. Follow dimensional drawings for duct-
work, piping locations, electrical wiring (refer to Table 2 for
electrical data) and overall unit dimensions.
Read all installation instructions before installing the unit.
Step 1 - Complete Pre-Installation Checks -
Examine unit for damage incurred during shipment. File claim
immediately with transit company if damage is found. Check
the shipment for completeness. Verify that the nameplate elec-
trical requirements match the available power supply.
DO NOT place the unit in a horizontal position that would
allow oil to drain into the top of the compressor. Do not allow
refrigerant lines to come into contact with wiring or sharp ob-
jects or edges. Do not lift or move unit by putting pressure on
refrigerant lines.
Form 50BY-1SI
50BYN006-024
Air-Cooled Units
5 to 20 Tons
GENERAL
Pg 1
1-02
Replaces: New
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Summary of Contents for Carrier 50BYN006
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Page 1: Table Of Contents
50BYN006-024 ECOZONE Vertical Single Package Air-Cooled Units 5 to 20 Tons Installation, Start-Up and Service Instructions CONTENTS Page Before performing service or maintenance operations on SAFETY CONSIDERATIONS ..... . 1 unit, turn off main power switch to unit. -
Page 2: Installation
Step 2 — Rig and Place Unit — 15. Pull the unit down and check to make sure all joints are Units are mounted tight and leak free. Open the discharge line service valve. on skids. Leave the unit on the skid until it is in the final posi- See Fig. - Page 6 Table 1 — Physical Data UNIT 50BYN NOMINAL CAPACITY (tons) 1036 1190 1654 UNIT OPERATING WEIGHT (lb) COMPRESSOR Carrier Scroll Model SR58 SR75 SR58 SR58/SR75 SR75 SR75 Quantity 3500 Oil Charge (oz) 44/44 50/44 50/50 50/50/50 Steps of Control OPERATING CHARGE R-22 (lb) 10.1...
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Page 7: Step 4 - Install Ductwork
Step 4 — Install Ductwork — The 50BYN unit is de- signed for use either with or without ductwork or rain louvers. If either is used, care must be taken to eliminate air recircula- tion. Recirculation can be minimized by discharging through an extension elbow. - Page 8 THREADED LIQUID LINE FITTING ON TXV (3 CIRCUITS) THREADED SUCTION CONNECTION (3 CIRCUITS) LIQUID LINE THREADED CONNECTIONS AND SERVICE VALVES (3 CIRCUITS) SUCTION LINE SERVICE PORT DISCHARGE LINE SERVICE VALVE DISCHARGE LINE SERVICE PORT Fig. 6 — 50BYN024 Front View UNITS SPLIT AT THIS POINT Fig.
- Page 9 SUCTION LINE THREADED CONNECTION EVAP THREADED CONNECTION DISCHARGE LINE LIQUID LINE SERVICE SERVICE PORT PORT FILTER DRIER COMP COND SERVICE SERVICE THREADED VALVE VALVE CONNECTION Fig. 8 — Typical System Setup...
- Page 10 DISCHARGE LOUVER 50BYN 50BYN DIMENSIONS (in.) UNIT 50BYN A 24 14 6 20 24 15 6 21 30 15 6 21 1" 4 3/4" INLET LOUVER *Access panel for condenser coil cleaning. INLET LOUVER DETAIL DISCHARGE LOUVER DETAIL 5" 14 GAGE ALUMINUM OR 18 GAGE GALVANIZED STEEL 4"...
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Page 11: Step 5 - Install Rain/Condensate Drain Line
DUCT FLANGE Fig. 10 — Placement of Duct Flanges (50BY016,024) Step 5 — Install Rain/Condensate Drain Line CONDENSER AIRFLOW LOUVERS — The proximity of the condenser air inlet and discharge airstreams makes the pos- IMPORTANT: A rain drain connection MUST BE sibility of air recirculation quite high. - Page 12 *Provide access for cleaning condenser coil. Fig. 11 — 50BYN Applications...
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Page 13: Step 6 - Complete Electrical Connections
A 4-in. trap is recommended. 2. Carrier TEMP thermostat. Mount relay pack for the Carrier TEMP thermostat in the low voltage section of the Fig. 12 — External Trap Condensate Drain control box. Wire from the relay pack to the low voltage Step 6 —... - Page 14 Table 2 — Electrical Data VOLTAGE COMPRESSOR COMPRESSOR COMPRESSOR CONDENSER INDOOR-FAN POWER UNIT RANGE NO. 1 NO. 2 NO. 3 MOTOR SUPPLY* V-PH-Hz 50BYN Min Max MOCP† 208/230-3-60 187 18.3 — — — — 37.0 460-3-60 — — — — 17.8 575-3-60 —...
- Page 15 50BYN (012 SIZE UNIT AND LARGER) UNIT GROUND WIRE NUT SHIELD (CUT AND TAPE BACK) RS+5 REMOTE ROOM SENSOR (P/N ZONECCORRS01) RS GND 33CS250-01 NOTE: Remote sensor is field-installed option. Fig. 13 — Thermostat Connection Diagram with 33CS250-01 Thermostat 50BYN O/W2 Y/Y2 W/W1...
- Page 16 Table 3 — Condenser Fan Performance STATIC PRESSURE (in. wg) 50BYN 2,000 0.18 0.30 0.40 0.46 1070 0.61 1130 0.72 2,500 0.40 0.59 0.63 1020 0.79 1105 1.10 1184 1.35 3,000 0.83 0.90 1080 1.00 1122 1.10 1200 1.29 1320 1.46 3,500 1047...
- Page 17 Table 4 — Evaporator Fan Performance EXTERNAL STATIC PRESSURE (in. wg) 50BYN006 1100 1210 1310 1400 1500 0.20 0.30 0.35 0.47 0.44 0.56 0.69 1080 1140 1240 1340 1430 1750 0.22 0.36 0.53 0.60 0.68 0.90 1.10 1090 1140 1240...
- Page 18 Table 4 — Evaporator Fan Performance (cont) EXTERNAL STATIC PRESSURE (in. wg) 50BYN014 1040 1080 1130 1180 1280 3,600 0.67 0.80 0.94 1.06 1.25 1.49 1.63 1.76 1.97 2.30 2.50 2.70 1040 1050 1100 1150 1215 1285 4,200 1.03 1.18 1.40 1.63 1.72...
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Page 19: Compressor Rotation
On a call for heating from the thermo- CARRIER TEMP THERMOSTAT — The Carrier TEMP stat (W1 and/or W2 energized), the economizer remains at the System is a control system which includes a relay pack, TEMP minimum position. -
Page 20: Service
On a call for cooling from the thermostat (Y1 energized), Take care not to get water in the system ducts or unit the actuator logic module determines if the outdoor air en- insulation. thalpy is acceptable according to the set point on the actuator. If Lubrication —... -
Page 21: Maintenance
MAINTENANCE Cleaning — The unit should be thoroughly cleaned inside and out. Frequency of cleaning will depend on unit location and area conditions. Drains must be kept free of dirt and trash. Coils can be cleaned with a stiff brush, vacuum cleaner, or compressed air. -
Page 22: Access Panel Removal
Table 5 — Subcooling Temperature 2. Loosen bolts on mounting bracket so that fan belt can be removed. UNIT 50BR,BZ SUBCOOLING* 3. Loosen and remove the 2 motor mounting bracket bolts 006-016 20 ± 2° F on left side of bracket. *Saturated condensing temperature at compressor minus liquid line 4. -
Page 23: Troubleshooting
TROUBLESHOOTING Refer to Table 6 to determine the possible cause of the problem and the associated procedure necessary to correct it. See Fig. 18 for typical wiring. Table 6 — Troubleshooting Procedure PROBLEM POSSIBLE CAUSE CORRECTION PROCEDURE Unit will not start. Loss of unit power Check power source. - Page 24 Table 6 — Troubleshooting Procedure (cont) PROBLEM POSSIBLE CAUSE CORRECTION PROCEDURE Discharge pressure too Outdoor temperature too low Install low-ambient control. Condenser airflow too high Check and adjust. Low charge Check for and repair leaks and add refrigerant as necessary. Compressor fault Check suction and discharge pressure.
- Page 25 NOTES: 1. Fan motors are inherently thermally protected. 2. Three-phase motors are protected under primary single phase conditions. 3. Use conductors suitable for at least 194 F (90 C) when replacing factory wiring. 4. Use copper conductors only. 5. Wiring for field power supply must be rated at 165 F (75 C) minimum.
- Page 26 Copyright 2002 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 PC 111 Catalog No. 535-050 Printed in U.S.A. Form 50BY-1SI Pg 26 1-02 Replaces: New...
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Page 27: Start-Up Checklist
START-UP CHECKLIST (Fill out this form on Start-Up and file in job folder) I. PRELIMINARY INFORMATION 50BYN UNIT: MODEL NO. ____________________ SERIAL NO. ____________________ FIELD-INSTALLED ACCESSORIES: _____________________________________________________________________ START-UP DATE: ______________________________________ II. PRE-START-UP: VERIFY ALL SHIPPING MATERIALS HAVE BEEN REMOVED FROM THE UNIT IS THERE ANY SHIPPING DAMAGE? ________________ IF SO, WHERE ________________ _________________________________________________________ WILL THIS DAMAGE PREVENT UNIT START-UP? - Page 28 SUPPLY FAN AMPS: NOTES: _______________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ _______________________________________________________________________________________________ Copyright 2002 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book PC 111 Catalog No. 535-050 Printed in U.S.A.
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