Krack KR14A-058 Installation Manual
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KR Air Defrost Unit Coolers (PN E108317_D)
TABLE OF CONTENTS
1 LOCATION RECOMMENDATIONS ................................................................................................. 1
2 UNIT MOUNTING .............................................................................................................................. 2
3 DRAIN LINE ........................................................................................................................................ 4
4 REFRIGERATION PIPING ............................................................................................................... 4
5 REFRIGERANT DISTRIBUTOR ...................................................................................................... 4
6 EXPANSION VALVE .......................................................................................................................... 6
7 WIRING ................................................................................................................................................ 7
8 PRE-STARTUP .................................................................................................................................... 8
9 REPLACEMENT PARTS ................................................................................................................... 9
Tables
Table 1 Unit Dimensions and Connections Sizes ........................................................................................... 3
Table 2 Distributor Nozzle Selections ............................................................................................................ 5
Table 3 Recommended Expansion Valves ...................................................................................................... 6
Table 4 Units Electrical Information .............................................................................................................. 7
Table 5 Replacement Parts ............................................................................................................................10
Figures
Figure 1 Unit Dimensions .............................................................................................................................. 3
Figure 2 Air Defrost Wiring Diagram ............................................................................................................ 8
Figure 3 Air Defrost Wiring Diagram with Timer ......................................................................................... 8
Figure 4 Replacement Parts ........................................................................................................................... 9
KR Air Defrost Unit Coolers (PN E108317_D) 1
1 LOCATION RECOMMENDATIONS
Air defrost unit coolers must have proper airflow to maintain a uniform room temperature
and have a complete defrost.
These units are draw thru design thus drawing air thru the cooling coil and discharging it
into the room via the unit fans. For best performance it is desirable to arrange the air
discharge toward the door of the cooler to minimize the entrance of warm moist air when
the door is open. The unit must be at least 12 inches from the wall to assure proper air
intake.
2 UNIT MOUNTING
The unit cooler may be suspended with 3/8" diameter hanger rods or flush mounted to
the ceiling using 5/16 minimum lag screws with flat washers. Rods should be double
nutted top and bottom.
The unit must be level in all directions to insure proper drainage of condensate.
Suspended units must have sufficient clearance above for cleaning the top.
KR Air Defrost Unit Coolers (PN E108317_D) 2
Figure 1 Unit Dimensions
MODEL
NUMBERS
DIMENSIONS (INCHES)
CONNECTIONS ODS (IN)
A B C
LIQUID
SUCTION
KR16A-040
-
18
29-1/8
1/2
5/8
KR16A-054
-
18
29-1/8
1/2
5/8
KR16A-060
-
18
29-1/8
1/2
5/8
KR26A-072
-
36
47-1/8
1/2
7/8
KR26A-089
-
36
47-1/8
1/2
7/8
KR26A-105
-
36
47-1/8
1/2
7/8
KR26A-115
-
36
47-1/8
1/2
7/8
KR26A-125
-
36
47-1/8
1/2
7/8
KR36A-134
-
54
65-1/8
1/2
7/8
KR36A-159
-
54
65-1/8
1/2
1 1/8
KR36A-170
-
54
65-1/8
1/2
1 1/8
KR46A-216
36
72
83-1/8
1/2
1 1/8
KR56A-242
36
90
101-1/8
1/2
1 1/8
KR66A-310
54
108
119-1/8
1/2
1 1/8
KR66A-340
54
108
119-1 /8
1/2
1 1/8
KR14A-058
-
18
29-1/8
1/2
5/8
KR24A-096
-
36
47-1/8
1/2
7/8
KR24A-117
-
36
47-1/8
1/2
7/8
KR34A-143
-
54
65-1/8
1/2
7/8
KR34A-173
-
54
65-1/8
1/2
1 1/8
KR44A-191
36
72
83-1/8
1/2
1 1/8
KR44A-232
36
72
83-1/8
1/2
1 1/8
KR54A-290
36
90
101-1/8
1/2
1 1/8
KR64A-348
54
108
119-1/8
1/2
1 3/8
Table 1 Unit Dimensions and Connections Sizes
KR Air Defrost Unit Coolers (PN E108317_D) 3
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