Liebert 3000 installation manual 6.1Piping Considerations, 6.0CHILLED WATER MODELS, Wayvalve

Chilled Water Models

6.0CHILLED WATER MODELS

6.1Piping Considerations

Manual shut-off valves should be installed at the supply and return lines to each unit. This will pro- vide for routine service and emergency isolation of the unit.

Consideration of the minimum water temperature to be supplied from the chiller will determine if the need exists to insulate supply and return lines. Insulation will prevent condensation on the supply and return lines.

To provide for the emergency of water leaks and the consequences of sub-floor flooding, floor drains should be provided with wet traps or a water detection system, such as a Liqui-tect, that is installed near the base of the unit or below the elevated floor.

Figure 19 Chilled water general arrangement - Upflow (BU)

Air

Flow

Bleed

Valve

Chilled

Water

Supply

Chilled

Water

Return

Shutoff

Valves*

Hose

Bibs*

Chilled

Water

Supply

Chilled

Water

Return

Shutoff

Valves*

Hose Bibs *

Valve

Actuator

A

3-Way

AB Chilled Water

B Valve

Flow

Switch (optional)

Bleed

Valve

Valve

Actuator

2-Way Chilled Water Valve

SINGLE CIRCUIT SHOWN

FACTORY

PIPING

FIELD

PIPING

*Components are not supplied by Liebert but are recommended for proper circuit operation and maintenance.

Chilled

Water

Coil

3-WAY VALVE

Air

Flow

Chilled

Water

Coil

2-WAY VALVE

SL-11899 PG 5

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