Liebert SL-14050 Accessories Fill CUP Extension Kits, Condensate Return Line

ACCESSORIES - FILL CUP EXTENSION KIT(S)

1.The SGH humidifier is an electrode humidifier. It produces steam at atmospheric pressure. Pressure head must develop to push steam through supply line and into air duct.

2.Combined resistance of duct positive static pressure and steam line resistance creates a small pressure head in steam cylinder. Total amount of positive static pressure head is reflected directly by water column differential that develops between water in the fill cup hose feeding cylinder and water level in cylinder.

3.Standard dimensions of humidifier limit static that can be tolerated before water will be pushed high enough to spill over into overflow tube in fill cup assembly.

4.To increase allowable water column (allowable positive static pressure) an accessory Fill Cup Extension Kit is available from Liebert. See Figure #22.

Figure #22

Fill Cup Extension Kit to Overcome Static Pressure

FILL CUP BRACKET
FILL CUP
OVERFLOWHOSE
FILL HOSE TO	HOSEFROMFILLVALVE
CYLINDER

CONDENSATE RETURN LINE

1.Each steam distributor has a built-in condensate return (3/8" O.D. copper tubing). Flexible condensate return hose (3/8" I.D.) available from Liebert, is recommended for routing condensate back into humidifier’s fill cup. Note: A short length of 3/8" O.D. copper tubing is supplied by Liebert for use when routing condensate hose back to humidifier’s fill cup. Similarly, a short length of 3/8" I.D.

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condensate hose with clamps is supplied with Liebert’s steam distributors to serve as a flexible coupling. DO NOT direct solder field copper condensate line to steam distributors.

2.Always incorporate a trap in routing of condensate return line. Condensate that accumulates in trap will prevent possibility of steam escaping. Depth of trap must exceed duct static pressure by 2 inches of water column. See Figure #23.

Figure #23

Trap to Prevent Steam in Condensate Line

3 FEET MINIMUM

TRAP

CONDENSATE TRAP

DEPTH OF TRAP

MUST BE 2" MORE THAN

DUCT STATIC PRESSURE OF WATER COLUMN

3.Condensate return line can not be run back to fill cup if humidifier is within 36" of being level with steam distributor. See Figure #18.

4.If steam distributor is mounted level with or below humidifier, condensate line must be routed to nearest floor drain or to a condensate pump (available from Liebert). See Figure #24.

Figure #24

Drain Pump (if necessary)

Humidifier

Drain Line

Line

Drain

FloorPump

Surface

5.Provide a “U” trap in condensate line even when distributor is located in return air plenum. It stops a suction action from