Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 50EJ, 50EW Notice To Riggers All Panels Must Be In Place, When Rigging, Ð Rigging Label

Models: 50EK 50EY 50EW 50EJ

1 56

Download 56 pages 61.69 Kb

Page 8

NOTICE TO RIGGERS:

Step 2 Ð Rig and Place Unit Ð Inspect unit for trans- portation damage. File any claim with transportation agency. Keep unit upright, and do not drop. Use spreader bars over unit to prevent sling or cable damage. Rollers may be used to move unit across a roof. Level by using unit frame as a reference; leveling tolerance is shown in Fig. 1 and 2. See Fig. 7 for additional information. Unit weight is shown in Table 1.

NOTE: On retro®t jobs, ductwork may be attached to old unit instead of roof curb. Be careful not to damage ductwork when removing unit. Attach existing ductwork to roof curb instead of unit.

Four lifting lugs are provided on the unit base rails as shown in Fig. 7. Refer to rigging instructions on unit.

POSITIONING Ð Provide clearance around and above unit for air¯ow, safety, and service access (Fig. 3-6).

Do not install unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated air.

Although unit is weatherproof, guard against water from higher level runoff and overhangs.

NOTICE TO RIGGERS:

ALL PANELS MUST BE IN PLACE

WHEN RIGGING.

NOTE: Rig with four cables and spread with two 92 in. (2337 mm) spreader bars. Maintain a dis- tance of 74 in. (1880 mm) from top of unit to eyehook.

NOTE:

Add 32 lb (14.5 kg) for domestic crating.

Add 312 lb (142 kg) for export crating (024-034 units). Add 346 lb (157 kg) for export crating (038-048 units). Add 250 lb (113 kg) for power exhaust.

Add 220 lb (100 kg) for copper condenser coil (024-034 units). Add 285 lb (129 kg) for copper condenser coil (038-044 units). Add 380 lb (172 kg) for copper condenser coil (048 unit).

MODEL	WEIGHT			A			B			C
50EJ/EK/EW/EY	lb	kg	in.		mm	in.		mm	in.		mm
024	4016	1822	87.68		2227	71.4		1814	41.7		1059
028
030	4102	1860	87.68		2227	68.5		1740	43.6		1107
034
038*	4282	1942				91.3		2319	46.5		1181
044	4508	2045	150		3810	87.8		2230	46.5		1181
048*	4795	2175				86.2		2189	46.1		1171

*Sizes 038 and 048 are 50EJ,EW units only.

Fig. 7 Ð Rigging Label

8

Image 8

Carrier 50EJ, 50EW, 50EY, 50EK Notice To Riggers All Panels Must Be In Place, When Rigging, Ð Rigging Label

Contents

CONTENTS IMPORTANT Ð READ BEFORE INSTALLINGINSTALLATION Step 1 Ð Provide Unit Support SAFETY CONSIDERATIONSDegrees and Inches Fig. 1 Ð Roof Curb SizesUNIT LEVELING TOLERANCES DIMENSIONS Degrees and Inches Fig. 2 Ð Roof Curb SizesUNIT LEVELING TOLERANCES DIMENSIONS Fig. 3 Ð Base Unit Dimensions, 50EJ/EK024-034 UNIT SIZE Fig. 5 Ð Base Unit Dimensions, 50EW/EY024-034 UNIT SIZE Fig. 7 Ð Rigging Label WHEN RIGGINGNOTICE TO RIGGERS ALL PANELS MUST BE IN PLACE Table 1 Ð Physical Data OPERATING WEIGHT lbFactory Speed Setting rpm HIGH-PRESSURESWITCH psigTable 1 Ð Physical Data cont OPERATING WEIGHT lbFactory Speed Setting rpm HIGH-PRESSURESWITCH psigStep 4 Ð Make Unit Duct Connections Table 2 Ð Evaporator Fan Motor DataFig. 8 Ð Air Distribution Ð Thru-the-Bottom Fig. 9 Ð Air Distribution Ð Thru-the-SideFeatures with Thermostat Control of Unit Fig. 11 Ð Field Control Remote Start/Stop Fig. 12 Ð Control Board Diagram Fig. 13 Ð Field Power Wiring Connections Step 7 Ð Make Electrical Connections1.Remove cap from red 208-vwire Table 4 Ð Electrical Data Ð 50EJ,EK,EW,EY024-048 150/150 200/200 225/200 225/225 23.6 23.6 Fig. 14 Ð Control Box Diagram Sizes Fig. 15 Ð Control Box Diagram SizesPEC − Power Exhaust Controller PEC Ð Power Exhaust ControllerStep 8 Ð Make Outdoor-AirInlet Adjustments Fig. 16 Ð Field Control Thermostat WiringFig. 17 Ð Field Control Temperature Sensor Wiring Table 5 Ð CCN Connection Approved Shielded CablesMounting Flange of Hood Sides Fig. 18 Ð Adding Seal Strip to Top of Hood SidesFig. 20 Ð Adding Seal Strip to Attached to Filter Track Assembly Fig. 21 Ð Adding Seal Strip toHood Top Mounting Flange Fig. 22 Ð Adding Foam Strip to Cross MemberFig. 29 Ð Wire Connections for Solid State Fig. 30 Ð Psychrometric Chart forFig. 27 Ð Attaching Seal Strip to Filter Cover Fig. 28 Ð Differential Enthalpy ControlFig. 31 Ð Barometric Relief Damper and Power Exhaust Mounting DetailsFig. 32 Ð Pressure Transducer Locations Fig. 33A Ð Motormaster III Sensor Location SizesFig. 33C Ð Motormaster III Sensor Location START-UP Table 9 Ð Power Exhaust Default Set Points Direct Digital Controls DIP Switch ConguraTable 8 Ð Potentiometer Signal Levels SETTING Sequence of Operation AIRFLOW AVAILABLE EXTERNAL STATIC PRESSURE in. wg Table 15 Ð Air Quantity Limits Table 16 Ð Motor Limitations Table 17 Ð User Dened Set PointsThe control module will operate economizer, run diag- nostics to monitor alarms/alerts at all times, and respond to CCN communications to perform any congured network POC product outboard control functions such as time/ outdoor-airtemperature broadcast and global occupancy broad- cast. When the optional expansion I/O board is employed, it will perform a periodic scan and maintain a database of ex- panded I/O points perform Fire/Smoke control power ex- haust required if in Occupied mode, perform IAQ control and monitor the fan, lter, demand limit, and eld-appliedstatus with accessories Fig. 35 Ð Heat Interlock Relay Wiring Fig. 36 Ð Space Temperature Sensor WiringSERVICE Table 18 Ð Cooling Capacity Staging TableCV Units with 2 Compressors Table 19 Ð Cooling Capacity Staging TableEvaporator Fan Service and Replacement and AdjustmentLubrication Fig. 38 Ð Evaporator-FanPulley AlignmentBelt Tension Adjustment Ð To adjust belt tension Condenser-FanAdjustmentEvaporator-FanMotor Replacement Fig. 39 Ð Belt Tension AdjustmentFig. 41 Ð Cooling Charging Chart Sizes Fig. 42 Ð Cooling Charging Chart Sizes50EJ,EK,EW,EY024-034 TROUBLESHOOTINGFig. 43 Ð Typical Refrigerant Circuiting Fig. 44 Ð Typical Refrigerant Circuiting 50EJ,EK,EW,EY038,044LEGEND FPS Ð Freeze Protection Switch HPS Ð High-PressureSwitchFig. 45 Ð Typical Refrigerant Circuiting 50EJ,EW048LEGEND FPS Ð Freeze Protection Switch HPS Ð High-PressureSwitchTable 20 Ð Control Board LED Alarms Table 21 Ð I/O Channel Designations Base Module Ð CVTable 22 Ð I/O Channel Designations Base Module Ð VAVTable 23 Ð I/O Channel Designations Expansion Module Ð CV and VAVPage Page PACKAGED SERVICE TRAINING START-UPCHECKLIST TEMPERATURESPRE-START-UP ELECTRICALSTART-UPCHECKLIST cont GENERAL