Specifications

Fig. 9 — Typical Piping with 30MPA Unit and 09DP Remote Air-Cooled Condenser

a30-5409

NOTES:

1. Chiller must be installed level to maintain proper compressor

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-II

soft-

ware Refrigerant Piping program, or appropriate ASHRAE

(American Society of Heating, Refrigerating, and Air Condi-

tioning Engineers) handbook for details on proper piping sizes

and design.

5. See Tables 1A and 1B for minimum system fluid volume. This

system may require the addition of a holding tank to ensure

adequate volume.

6. Hot gas lines should rise above refrigerant level in condenser

circuit. Double riser may be required; check unit minimum

capacity.

7. Trap should be installed on hot gas lines to prevent condenser

oil and refrigerant vapor migration from accumulating in the

compressor during off cycle.

8. Pitch all horizontal lines downward in the direction of refriger-

ant 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 Refrigera-

tion.