SGH Steam Generating Humidifier Installation and Operation Guide IMPORTANT: Read and save this guide for future reference. This guide to be left with equipment owner. SL-14050 Form # 99-428 Rev. 1 / 150-1633 Rev.
Table Of Contents INSTALLATION 1 RECEIVING & UNPACKING EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 PRE-INSTALLATION CHECKPOINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 BASIC HUMIDIFIER CONFIGURATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 LOCATION & MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 HUMIDIFIERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. Report any discrepancy immediately. INSTALLATION BASIC HUMIDIFIER CONFIGURATION RECEIVING & UNPACKING EQUIPMENT Liebert humidifier model SGH has a right side electrical compartment. Each electrical compartment has a hinge-down front door which is removable from any partially or fully opened position. Each electrical compartment has a screw-mounted right side cover which can also be removed for ease of electrical connection. For safety, the door when closed keeps the side cover from being removed. 1.
In addition, install a minimum of 2 field supplied fasteners in the holes provided in the back of the unit to prevent the unit from being bumped off the wall bracket. to clearances required for plumbing, electrical, and control entrances. The clearance dimensions shown in this manual are for reference only and are the minimum required for maintenance of the humidifier. Local and National Codes should be consulted prior to final location and installation of the humidifier.
Figure #5 Remote Mounted Blower Packs (SGBP) FRONT SIDE Figure #6 Overhead and Frontal Clearances for Blower Packs WALL SGH Model 3.2” (8 cm) A POWER AND CONDENSATE STEAM CONTROL WIRING FROM HUMIDIFIER 005-030 10-20 Min. Min. Overhead Number Clearance of Blower inches (cm) Packs Min. Front Clearance inches (cm) 010 1 18 (45) 30 (76) 020 1 18 (45) 36 (91) 050 1 36 (91) 84 (213) 100 1 48 (122) 156 (396) 200 2 42 (122) 156 (396) 050-100 050-100 See A Figure3.
Figure #7 Steam Distributor Location downward slope to the distributor will result in poor condensate drainage and “spitting” of condensate in duct. See Figure #9. 6' Min. Figure #9 Leveling Distributor 6' Min. Wrong Mount Steam Distributor At Least 6' (2 M) From Elbow Multiple Steam Distributors Can Reduce This Distance Support (If Needed) Correct Always Mount Level 5. Exercise extreme caution when installing in fiber glass or internally lined ducts. 6.
below is proportioned accordingly. See Figure #14. For short steam absorption systems see Figure #13. 10. Any distributor longer than 3 feet (1 meter) should be supported at its end with a threaded rod through top or bottom of duct. See Figure #10. Figure #14 Multiple Steam Distributors for Better Mixing 11. It is recommended that single distributors are mounted near the bottom of the duct to ensure the steam is dispersed into the majority of the air flow. See Figure #12. MIN.
codes prohibit it. Route to a floor drain or equivalent for safety reasons, since drain water from humidifier can be very hot. 5. ALWAYS supply and install a shut off valve in the water supply line dedicated to the humidifier to facilitate servicing. Use ½" OD copper to within 4 feet of the humidifier. Reduce copper to 3/8" OD and connect to the factory-supplied 3/8" olive compression fitting under the humidifier. 3. Keep drain lines as short as possible.
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. 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.
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. 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. Always incorporate a trap in routing of condensate return line.
on the steam distributor, starts the fan when steam is generated. impeding condensate flow when duct pressures are below atmosphere. 6. The condensate line can go to either of two large holes in the fill cup cover on top of humidifier. 3. All blower packs have high efficiency blowers to minimize the frontal and overhead clearance required to absorb the steam. 7. It is not necessary to return the condensate to the humidifier. 4. All built-on blower packs are factory wired to humidifier.
or down stream from distributor. Mount it where air’s humidity and temperature are uniform and representative of spaces being humidified. information is relevant to all controls, factory supplied or otherwise. A, B and C (described below) are to be wired in series (only one path for current) across terminals 8 and 10 on the low voltage control terminal strip, or replaced with a jumper wire for constant operation (see Figure #27).
4. The modulation signal must increase from minimum toward maximum as sensed RH (actual RH) drops below desired RH (%RH setpoint). In response, humidifier’s steam output will increase from minimum toward maximum. When humidifier’s steam output (lbs/hr) matches humidification load (lbs/hr), modulation signal will stabilize. and the humidifier starts its operation. The controller waits 10 seconds before energizing the on-board relays. When the relays energize, heating voltage is delivered to the cylinder.
satisfied and stops again. The resultant short-cycling is easily overcome. using a screwdriver, press the reset button (marked with a red dot) inside the blower packs. A manual capacity adjustment potentiometer (“pot”) is provided on the SGH main pc board for that purpose. It is marked “CAPACITY ADJUST” and is adjustable from 25 to 100% of rating. Units are also equipped with speed select switch. The switch is located on the right-hand side of the blower, inside the blower pack.
LIMITED WARRANTY Liebert Corporation (hereinafter collectively referred to as THE COMPANY), warrant for a period of two years from date of shipment, that THE COMPANY’s manufactured and assembled products, not otherwise expressly warranted (with the exception of the cylinder) are free from defects in material and workmanship. No warranty is made against corrosion, deterioration, or suitability of substituted materials used as a result of compliance with government regulations.
Model # :_________________________ Serial # :__________________________ Cylinder # :_________________________ Cylinder Last Replaced: _________________________ MTH/DAY/YR _________________________ MTH/DAY/YR Listed Humidifier E65185 LIEBERT CORPORATION 1050 Dearborn Drive, P.O.
