CHILLERS WITHOUT ISOLATION VALVES | CHILLERS WITH ISOLATION VALVES |
| (WITH OR WITHOUT PUMPOUT STORAGE TANKS) |
GENERAL PIPING CONNECTION SIZES
CONNECTION | | SIZE (in.) |
Refrigerant Transfer Connections | 1¤2 | ODS (female) |
Condenser Water Cooling Connectors | 1¤2 | NPT (female) |
Safety Relief Head Pumpdown Condenser | 3¤8 | Flare (male) |
ODS Ð Outside Diameter, Sweat
NOTES:
1.The ®eld-supplied tubing is to be1¤2-in. OD tubing (min.) and must be arranged and supported to avoid stresses on the equipment, transmission of vibrations, and interference with routine access during the reading, adjusting, and servicing of the equipment. If the distance from the chiller to the pumpout unit is over 50 ft, then 7¤8-in. OD tubing (min.) must be used. Provisions should be made for adjustment in each plane of the tubing and for both periodic and major servicing of the equipment. Special care must be taken so that the safety head does not experience tubing strain. Vent the safety head per ASHRAE 15 (American Society of Heating, Refrigeration, and Air Conditioning Engineers), latest revision.
2.The tubing and valve from the storage tank to the pumpout com- pressor is factory supplied when the unit is factory mounted.
LEGEND
Factory-Supplied Tubing
Field-Supplied Tubing
Field-Supplied Tubing (Multiple Chillers)
Service Valve (Factory Supplied)
Service Valve (Field Supplied)
Fig. 6 Ð Typical Pumpout Unit/Chiller Connection Schematic
