Unit Isolation - Where extremely quiet operation is essential, install isolators between floor and base of unit, or between ceiling and top section of unit.
Be sure that unit is level and adequately supported. Use channels at front and sides of unit for reference points when leveling.
Refrigerant Piping Access - The 524J Series units come with standard knockouts for refrigerant piping. These knockouts are located on both sides of the unit for installation flexibility. The standard knockouts provide sufficient access to the unit’s coils for all 524J*25A, 28A and 30A units. The 524J*25H requires additional holes which must be
IMPORTANT: Do not bury refrigerant piping underground.
Refrigerant Piping - See Tables
The 524J
The sensor bulb capillary tubes must be routed from the TXVs inside the unit through one of the piping access holes. Clamp the TXV sensor bulb on a vertical portion of the suction line, outside the unit. See Fig. 9.
NOTE: Be sure to remove the styrofoam shipping pad from the TXV. Verify that it has been removed. See Fig. 5.
IMPORTANT: Never attach the sensor to the suction manifold. Do NOT mount the sensor on a trapped portion of the suction line.
The 524J Series evaporator coils have a
External TXV equalizer connections are provided and
If suction line must be horizontal, clamp bulb to suction line at least 45 degrees above bottom, at approximately the 4 o’clock or 8 o’clock position. See Fig.11.
524J
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C10838
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524J*25A, 28A, 30A | 1,2, 3, 4 | — | — | — | — | — | — |
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524J*25H | 3*, 5, 6, 7 | 11/8 (28.6) | 11/8 (28.6) | 13/4 (44.5) | 3.25 (82.6) | 6.125 (155.6) | 10.38 (263.7) |
*Must be enlarged from 11/8 in. (28.6mm) to 13/4 in. (44.5mm) NOTE: Access hole knockouts
Fig. 8 - Refrigerant Piping Access Holes
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