3
TABLE OF CONTENTS
1. SAFETY CONSIDERATIONS ...................................................................................................... 4
2. INTRODUCTION .......................................................................................................................... 4
3. PRODUCT DESCRIPTION .......................................................................................................... 4
4. NOMENCLATURE ....................................................................................................................... 5
5. HANDLING AND RIGGING .......................................................................................................... 6
5.1 STANDARD UNIT WEIGHTS ................................................................................................................................. 7
5.2 R-448A OPERATING CHARGES (LB.) ................................................................................................................... 8
6. INSTALLATION ............................................................................................................................ 9
6.1 COMPLETE PRE-INSTALLATION INSPECTION ................................................................................................... 9
6.2 INSTALLATION LOCATION .................................................................................................................................... 9
6.3 MOUNTING ............................................................................................................................................................. 9
6.4 CONNECTING DRAIN LINE ................................................................................................................................... 11
6.5 CONNECTING REFRIGERANT LINES .................................................................................................................. 11
6.6 CONNECTING THE EXPANSION VALVE .............................................................................................................. 12
6.7 BULB LOCATION AND INSTALLATION.................................................................................................................. 12
6.8 SUCTION LINE CONSTRUCTION ......................................................................................................................... 13
6.9 EXTERNAL EQUALIZER LOCATION ..................................................................................................................... 15
6.10 FIELD WIRING ...................................................................................................................................................... 15
7. START UP .................................................................................................................................... 16
7.1 LEAK TESTING AND EVACUATION....................................................................................................................... 16
7.2 FAN MOTORS ......................................................................................................................................................... 16
7.3 FAN DELAY DEFROST TERMINATION CONTROL ............................................................................................... 16
7.4 FAN DELAY DRAIN PAN CONTROL ...................................................................................................................... 16
7.5 ADJUSTING EVAPORATOR PRESSURE AND SUPERHEAT ............................................................................... 16
8. DEFROST SYSTEM .................................................................................................................... 17
8.1 AIR DEFROST UNITS. ........................................................................................................................................... 17
8.2 ELECTRIC DEFROST UNITS .................................................................................................................................17
8.3 REVERSE-CYCLE HOT-GAS DEFROST UNITS. .................................................................................................. 17
8.4 THREE-PIPE HOT-GAS DEFROST UNITS ............................................................................................................ 17
9. SERVICE ..................................................................................................................................... 18
9.1 INITIAL INSPECTION ............................................................................................................................................. 18
9.2 PERIODIC INSPECTIONS ...................................................................................................................................... 18
9.3 CLEANING .............................................................................................................................................................. 18
10. TROUBLESHOOTING CHART .................................................................................................. 19
11. REPLACEMENT PARTS ............................................................................................................ 19
12. EVAPORATOR START-UP REPORT FORM ............................................................................. 20
13. WIRING DIAGRAMS .................................................................................................................. 22
13.1 EKA-EMA MODELS - AIR DEFROST (ECM TWIN-SPEED FAN MOTORS) ........................................................ 22
13.2 EKE-EME MODELS - ELECTRIC DEFROST (ECM HIGH-SPEED FAN MOTORS) ........................................... 23
13.3
EKR-EKT-EMR-EMT MODELS - HOT-GAS DEFROST (ECM HIGH-SPEED FAN MOTORS)
............................... 24
13.4 ALL LM MODELS - AIR, ELECTRIC & HOT GAS DEFROST ............................................................................... 25
13.5 EJA-LJA MODELS - AIR DEFROST (HIGH-SPEED FAN MOTORS (OPTIONAL)) ............................................. 26
13.6 EJA-LJA-DJA MODELS - AIR DEFROST (TWIN-SPEED FAN MOTORS (OPTIONAL)) ..................................... 27
13.7 EJA-LJA-DJA MODELS - AIR DEFROST (LOW-SPEED FAN MOTORS) ............................................................ 28
13.8 EJE-LJE-DJE MODELS - ELECTRIC DEFROST (TWIN-SPEED FAN MOTORS (OPTIONAL)) ......................... 29
13.9 EJE-LJE-DJE MODELS - ELECTRIC DEFROST (HIGH-SPEED FAN MOTORS FOR ROOMS
OF LESS THAN 32
O
F (0
O
C) (PILOT DUTY) .......................................................................................................... 30
13.10 EJ-LJ-DJ MODELS - HOT-GAS DEFROST (TWIN-SPEED FAN MOTORS) ..................................................... 31
13.11 EJ-LJ-DJ MODELS - HOT-GAS DEFROST (HIGH-SPEED FAN MOTORS FOR ROOMS
OF LESS THAN 32
O
F (0
O
C) ................................................................................................................................ 32
13.12 EJ-LJ-DJ MODELS - HOT GAS DEFROST WITH ELECTRIC DRAIN PAN (TWIN-SPEED
FAN MOTORS ..................................................................................................................................................... 33
13.13 EJ-LJ-DJ MODELS - HOT-GAS DEFROST WITH ELECTRIC DRAIN HIGH-SPEED
FAN MOTORS FOR ROOMS OF LESS THAN 32
O
F (0
O
C) ................................................................................ 34
13.14 EJ-LJ-DJ MODELS (AWEF) ECM BLUE FAN MOTORS .................................................................................... 35
14. PIPING DIAGRAMS ............................................................................................................................................. 36
14.1 EK-EM-EJ MODELS - HOT-GAS DEFROST ........................................................................................................ 36
14.2 LM-LJ-DJ MODELS - HOT-GAS DEFROST WITH ELECTRIC DRAIN PAN ........................................................ 37
14.3 LM-LJ-DJ MODELS - HOT-GAS DEFROST WITH HOT-GAS DRAIN PAN ......................................................... 38
GENERAL WARRANTY ................................................................................................................... 39
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