Liebert SL-14050 installation and operation guide Figure #19 Long Steam Lines

3.Liebert steam supply hose or field-supplied piping should be sloped downwards from the steam distributors to the humidifier. Slope should be at least 2" in 12" to promote condensate runback. See Figure #18. If this slope is not possible, condensate must be removed before the distributor. See Figure #19.

Figure #19

Long Steam Lines

Condensate To Drain

4.Minimize the length of steam line and keep it as straight as possible, minimizing bends.

Also, avoid using 90 elbows. Wherever possible, use long radius turns (using tube bender on oversized copper or pairs of 45 elbows). This will reduce the condensate generated by heat loss. This will also reduce the back pressure and avoid the need to buy/install an accessory Fill Cup Extension Kit. See Figure #22.

5.Ensure that the steam hose does not kink or sag. The steam hose becomes more flexible when hot. The hose should be supported to prevent water traps. Only use steam hose for connections or steam lined runs of 5 feet or less. See Figure #20.

Figure #20

Steam Hose Routing

AVOID WATER TRAPS

AVOID KINKS

PROPER

SLOPE

GENTLE

SWEEPING

TURNS

6.To ensure odor-free steam, always use Liebert steam hose. Check steam hose and hose couplings periodically for cracks, breaks, kinks. Replace as required. DO NOT substitute hose. Liebert is not responsible for health effects or damage from substitute hose.

7.Steam lines for SGH 050 through 200 require 1-5/8" O.D. (nominal 1-1/2") copper pipe. For steam runs longer than 40 ft use insulated nominal 2" copper to ensure the draining of condensate.

8.Do not use steel or plastic pipe for steam distribution, or hose other than Liebert supplied. Substitution will void warranty.

9.If steam line is routed below steam distributor or if the steam distributor is lower than the humidifier, a condensate trap ‘tee’ will be required to remove water at this low point. Run condensate from trap to nearest drain lower than the distributor. See Figure #21.

Figure #21

Condensate Tee at any Low Point in Steam Line

NOT ACCEPTABLE
WITHOUT TRAP "TEE"
	DUCT
OBSTRUCTION
HUMIDIFIER
CONDENSATE "TEE"	TO FLOOR
	DRAIN
AT LOW POINT IN
STEAM HOSE
CONSULT FACTORY

CREATE A FALSE LOW POINT TO REMOVE

CONDENSATE WHENEVER THE

STEAM LINE MUST APPROACH THE

DISTRIBUTOR FROM ABOVE.

10.All built-on blower packs are factory-fitted with all steam hose connections. No further work is required.

11.Do not run steam line more than 1 foot per lb/hr output. Example, 10 lbs/hr should not have a steam run longer than 10 feet. If long runs are unavoidable, the humidifier should be sized larger to compensate for condensate losses and insulated copper should definitely be used.

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