Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 50EW, 50EY, 50EK installation instructions Ð Base Unit Dimensions, 50EJ/EK024-034

Models: 50EK 50EY 50EW 50EJ

1 56

Download 56 pages 61.69 Kb

Page 4

Fig. 3 Ð Base Unit Dimensions, 50EJ/EK024-034

NOTES:

1. Weights include economizer (Std)

2. Center of gravity.

3. Do not locate adjacent units with dis- charge facing economizer inlet. Mini- mum clearances to be:

Adjacent Units: 15 -0

Top of Units: No overhang

Condenser Coil: 4 -0

Economizer Side: 6 -0

Filter Access Side: 10 -0 (for re- moval of evaporator coil)

4. For smaller service and operational clearances, contact Carrier Applica- tion Engineering department.

5. Bottom ducts designed to be attached to accessory roof curb. If unit is mounted on dunnage, it is recommended the ducts be supported by cross braces as done on accessory roof curb.

6. Dimensions are in inches. Dimen- sions in [ ] are in millimeters.

7. For units with electric heat, a ®eld- supplied 90° elbow must be installed in the supply ductwork below the unit discharge.

LEGEND

VFD Ð Variable Frequency Drive

UNIT SIZE	OPERATING	A	B	CORNER WEIGHT
UNIT SIZE	WEIGHT	A	B			(lb)
50EJ/EK	WEIGHT					(lb)
50EJ/EK	(lb)	ft-in.	ft-in.	1	2		3	4
	(lb)	ft-in.	ft-in.	1	2		3	4
024	4016	5-113¤8	3-511¤16	823	914		1199	1080
028	4102	5- 81¤2	3-75¤8	844	859		1210	1189
030	4102	5- 81¤2	3-75¤8	844	859		1210	1189
034	4102	5- 81¤2	3-75¤8	844	859		1210	1189

Fig. 3 Ð Base Unit Dimensions, 50EJ/EK024-034

4

Image 4

Carrier 50EW, 50EY, 50EK installation instructions Ð Base Unit Dimensions, 50EJ/EK024-034

Contents

CONTENTS IMPORTANT Ð READ BEFORE INSTALLINGINSTALLATION Step 1 Ð Provide Unit Support SAFETY CONSIDERATIONSUNIT LEVELING TOLERANCES DIMENSIONS Fig. 1 Ð Roof Curb SizesDegrees and Inches UNIT LEVELING TOLERANCES DIMENSIONS Fig. 2 Ð Roof Curb SizesDegrees and Inches Fig. 3 Ð Base Unit Dimensions, 50EJ/EK024-034 UNIT SIZE Fig. 5 Ð Base Unit Dimensions, 50EW/EY024-034 UNIT SIZE NOTICE TO RIGGERS ALL PANELS MUST BE IN PLACE WHEN RIGGINGFig. 7 Ð Rigging Label 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 CablesFig. 20 Ð Adding Seal Strip to Fig. 18 Ð Adding Seal Strip to Top of Hood SidesMounting Flange of Hood Sides 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 8 Ð Potentiometer Signal Levels Direct Digital Controls DIP Switch ConguraTable 9 Ð Power Exhaust Default Set Points 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 SizesFig. 43 Ð Typical Refrigerant Circuiting TROUBLESHOOTING50EJ,EK,EW,EY024-034 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