Carrier 30GX080-176, 30HX076-271 Install Piping, Installing Fittings, 30GX Typical

Step 2 Ð Install Piping

Shut off all power to the unit, then lock out and safety- tag all disconnects before proceeding with installation.

Remove refrigerant charge from circuits using an ap- proved refrigerant recovery device before proceeding with installation.

NOTE: The units have 2 circuits. Perform all of the follow- ing piping installation procedures on both A and B circuits.

REMOVE MINIMUM LOAD PORT PLUGS AND IN- STALL FITTINGS Ð Plugs must be removed from these ports and replaced with Swagelok ®ttings. Note that plugs were factory-installed with Loctite refrigerant-compatible sealant. Fittings should be installed with similar sealant on threads.

30GX Ð Cut plug end off of minimum load port braze nipple on discharge line, located between oil separator and con- denser. Remove plug from minimum load port on cooler shell. See Fig. 1. Using thread sealant, install Swagelok ®tting in minimum load port on cooler. Port on nipple in discharge line is reserved for a brazed connection.

30HX Ð Remove plugs from minimum load ports on the cooler shell and the condenser shell (30HXC) or oil sepa- rator (30HXA). See Fig. 2. Using thread sealant, install Swagelok ®ttings in minimum load ports.

INSTALL PIPING Ð On 30GX units, install ®eld-supplied 5¤8-in. OD copper tubing between the Swagelok ®tting on the cooler shell and the brazed nipple on the discharge line. On 30HX units, install ®eld-supplied 5¤8-in. OD copper tub- ing between the ®ttings on the cooler shell and condenser (30HXC) or oil separator (30HXA). Do not tighten ®ttings or braze tubing yet.

TOP VIEW

Fig. 1 Ð Installing Fittings, 30GX (Typical)

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