Refrigerator User Manual

Fig. 14 — Typical Piping with Air-Cooled 30HWA with Remote 09DK Unit Shown
NOTES:
1. Chiller must be installed levelly to maintain proper compres-
sor oil return.
2. Wiring and piping shown are general points-of-connection guides
only and are not intended for a specific installation. Wiring
and piping shown are for a quick overview of system and are
not in accordance with recognized standards.
3. All wiring must comply with applicable local and national codes.
4. All piping must follow standard piping techniques. Refer to
Carrier System Design Manual part 3, Carrier E20-IIT soft-
ware Refrigerant Piping program, or appropriate ASHRAE
(American Society of Heating, Refrigeration, and Air Condi-
tioning Engineers) handbook for details on proper piping sizes
and design.
5. See Table 3 on page 17 for minimum system fluid volume.
This system may require the addition of a holding tank to en-
sure adequate volume.
6. Hot gas lines should rise above refrigerant level in condenser
circuit. Double riser may be required; check compressor mini-
mum capacity.
7. Trap should be installed on hot gas lines to prevent con-
denser oil and refrigerant vapor migration from accumulating
on compressor heads during off cycle.
8. Pitch all horizontal lines downward in the direction of refrig-
erant flow.
9. For piping lengths greater than 50 ft, provide support to liquid
and gas lines near the connections to the condenser coil.
10. For pressure relief requirements, see latest revision of
ASHRAE Standard 15, Safety Code for Mechanical
Refrigeration.
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