Nortec 380V installation manual B.Remote Mounted Blower Packs - Wall Mounting, 10-00, Page

B.REMOTE MOUNTED BLOWER PACKS – WALL MOUNTING

(1)Steam and condensate line connections are on the bottom of the blower pack. The condensate connection is 3/8” and the steam lines are 7/8” or 1 ½” depending. Ensure that the knock out on the steam inlet has been removed prior to use.

(2)To wall mount the Remote Blower Pack use 2 #12 x 3” long wood screws, supplied by others. These screws must be fastened securely on a 2 x 4 wood stud or equivalent support. If any spacer material is used between the bracket and the structural material such as drywall, increase the fastener accordingly. In addition, install a single field supplied fastener in the center hole in the back of the unit to prevent the unit from being bumped off the support screws.

C.REMOTE MOUNTED BLOWER PACKS – STEAM LINE

NOTE

PRIOR TO CONNECTING THE STEAM HOSE ENSURE KNOCK OUT HAS BEEN REMOVED.

(1)Field-supplied hard copper tubing or stainless steel tubing with ½” thick (min.) insulation is recommended for steam supply. Use NORTEC supplied steam hose to make connection from the humidifiers to the metal lines. See Figure 3 Steam Line Installation.

(2)Do not install electric zone valves on steam lines. Improper adjustment will over- pressurize the humidifier.

(3)NORTEC steam supply hose or field-supplied tubing should be sloped downwards from the blower pack to the humidifier. Slope should be at least 2” in 12” (10 degree slope) to promote condensate run back. See Figure 4 Steam Hose Installation. If upward slope is used from the blower pack to the humidifier, the slope should be at least 2” per 12” to promote condensate removal at the blower pack. If this slope is not possible, condensate must be removed before the blower pack. See Figure 5 Condensate Removal.

(4)Minimize the length of steam line and keep it as straight as possible, minimizing bends. Avoid using 90º elbows. Wherever possible, use long radius turns (using tube bender on oversized copper or pairs of 45º elbows). This will reduce the condensate generated by heat loss. This will also reduce the back pressure and avoid the need to install an extended water trap.

(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 connection or steam line runs of 5 feet or less. See Figure 4 Steam Hose Installation.

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

(7)For GS, SE, and NH Series using large size remote mounted blower packs (>50 lbs/hr) use 1 5/8” O.D. (Nominal 1 ½”) copper tubing. For steam runs longer then 20 ft, use insulated nominal 2” copper to ensure draining of condensate.

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Page 3 2008-04-28