READ AND SAVE THESE INSTRUCTIONS ® VAPORSTREAM Models VLC and VLDI ELECTRIC STEAM HUMIDIFIERS Installation Instructions and Maintenance Operations Manual For Toll-Free Technical Support, Call 1-800-328-4447 UL LISTED CUL LISTED
TABLE OF CONTENTS TO THE PURCHASER AND THE INSTALLER Thank you for purchasing VAPORSTREAM® Model VLC equipment. We have designed and built this equipment to give you total satisfaction and many years of trouble-free service. Proper installation and operating practices will assure you of achieving that objective. We therefore urge you to become familiar with the contents of this manual. This manual covers material for both VAPORSTREAM Model VLC and VAPORSTREAM Model VLDI humidifiers.
VAPORSTREAM® MODELS VLC AND VLDI VAPORSTREAM VLC Electric Humidifier State-of-the-art technology in a simple, low-maintenance humidifier. Duct This humidifier is designed to be used with either softened or unsoftened water (preferably softened). The probe-type level control system requires water conductivity of 100 micromhos/cm (2 grains/gal) minimum to function, and therefore will not operate on water treated by reverse osmosis or deionization.
MECHANICAL SPECIFICATIONS AND CAPACITIES Table 4-1: Mechanical Specifications and Capacities Steam capacities p er h o u r Model number Current draw (amps) (A) Heaters kW Single-phase L b s. Three-phase** K g. Qty. Stages* 120V 208V 240V 480V 600V 208V 240V 480V 600V VLC/VLDI 2-1 5.7 2.6 1 1 16.7 9.6 8.3 4.2 3.3 2 3-1 8.6 4.0 1 1 25.0 14.4 12.5 6.3 5.0 3 4-1 11.4 5.2 1 1 33.3 19.2 16.7 8.3 6.7 4 5-1 15.2 6.9 1 1 25.6 22.2 11.1 8.9 5.
MECHANICAL SPECIFICATIONS Table 5-1: Mechanical Specifications mm Weight empty (lbs) Weight empty (kg) Weight full (lbs) Weight full (kg) Control cabinet sizes 7.52 190 35 16 79 36 M 430 7.52 190 35 16 79 36 M 430 7.52 190 35 16 79 36 M 16.85 430 7.52 190 35 16 79 36 M 560 18.38 465 12.85 325 57 26 157 71 M A (width) B (height) C (length) Model Number in. mm in. mm in. VLC/VLDI 2-1 20.25 515 16.85 430 3-1 20.25 515 16.85 4-1 20.25 515 16.
VAPORSTREAM® MODEL VLC AREA-TYPE HUMIDIFIER Figure 6-1: Principle of Operation Steam created in the evaporating chamber (1) flows up through the chute (2), and is distributed into the space (3) via the fan. AREA-TYPE Humidifier Application Information The operating characteristics of AREA-TYPE steam humidifiers should be considered when selecting humidifier capacities and choosing mounting locations.
MOUNTING METHODS Mounting Procedures For proper operation of the electrode probe water level control and the skimmer system, the humidifier must be mounted level in both directions. settles to the bottom. A clean-out tray on the floor of the tank may be removed periodically through the front clean-out opening. Allow space for withdrawal of the tray when installing the humidifier. Access,18" minimum (460 mm), for periodic removal of the top cover is recommended.
MOUNTING METHODS 5. Mounting Units Away from Duct(s) Using Vapor Hose Vapor hose. (Pitch back min. 2" per foot (165 mm/m) to humidifier with supports to prevent sagging.) Maximum length 10' (3 m). Humidifier must be mounted level. OM-638 Stainless steel dispersion tube in middle of duct. Pitch as shown in figure 9-1 on page 9. 6.
DISPERSION TUBE INSTALLATION Dispersion Tube Installation with Condensate Drain Vapor Hose When a vapor hose and stainless steel dispersion tube are used, they should be pitched back to the humidifier. A minimum slope of 2" per foot (165 mm/m) (with no “low spots”) is recommended. Vapor hose should be supported to prevent sags or low spots. When this is not possible due to duct elevation or an obstruction, alternate arrangements should be used as shown in figure 15-1 or 15-2.
DISPERSION TUBE INSTALLATION Dispersion Tube Figure 10-1: Multiple Tube with Condensate Wasted to Floor Drain Duct Dispersion Tube 1-½" (38 mm) Dia. Vapor Hose or Hard Tubing* 6" (150 mm) Min. VAPORSTREAM ® VLC or VLDI Humidifier Water Seal (5" (125 mm) approx.) ½" (50 mm) O.D. Condensate Drain Tube Condensate Drain Tube by Others** (3/4" (20 mm) minimum) Air Gap *Refer to local codes for drain pipe sizing requirements.
OPTIONAL WEATHER COVER A weatherproof enclosure is available, as an option, for the VAPORSTREAM® VLC. This weather cover is available in either galvanized or stainless steel and comes in four sizes, designed to fit over a 3, 6, 9, or 12 heater VLC (see figure 12-2 for dimensional data on the four sizes). The weather cover encloses the VLC to protect it from wind and water, and is ETL listed to conform to UL standard 988.
WEATHER COVER DIMENSIONS Figure 12-1: Weather Cover Exploded View Top Panel Panel A Panel B Panel C OM-906A Panel D Figure 12-2: Weather Cover Dimensions Panel Identification Label C B ETL Certification Label Product Identification Label A D OM-904 Table 12-1: 3, 6, 9, and 12 Heater Overall Dimensions of Weather Cover Figure 12-2: Callout Letter 12 Callout Description Three Three (inches (mm) Six (inches Six (mm) Nine (inches) Nine (mm) Twelve (inches) Twelve (mm) A H ei ght 50¾ 1
RAPID-SORB® ASSEMBLY AND INSTALLATION Check that the dispersion tubes discharge steam perpendicular to the air flow. Secure tubes to the overhead channel. Secure the channel to the duct. Position hose cuffs or slip couplings over tube and header tube nipples, and secure with clamps. Instructions for Horizontal Duct 1. Unpack shipment and verify receipt of all RAPID-SORB components with packing list. Report any shortages to the DRI-STEEM factory immediately. 2.
RAPID-SORB® ASSEMBLY AND INSTALLATION Vertical Duct Installation Install the RAPID-SORB with dispersion tubes and header pitched to condensate drain as shown in figures 14-1,14-2, and 14-3. See "Instructions for Horizontal Duct" for additional information on page 13, as applicable. Figure 14-1: Plan View Figure 14-2: Elevation View Tube without Drain Airflow Recommended 2" per foot (165 mm/m) pitch 6" (150 mm) Min.
PIPING METHODS Drain Piping A drain line should be extended from the skimmer connection to a sanitary waste or suitable drain. If nonmetallic pipe or hose is used, it must be capable of withstanding temperatures up to 212°F (100° C).
PIPING DIAGRAMS: STEAM, WATER AND DRAIN Standard Unit (Non-DI/RO Water) Solenoid Water Make-up Valve Needle Valve Water Skim/Overflow Outlet - ¾" (20 mm) Water Supply Line (25 psi minimum) Manual or Optional Electric Drain Valve Drain and Water Seal Piping - ¾" (20 mm) (by installer) Clean-out Tray Heaters H Air Gap Three Probe Level Control and Low-Water Cut-off Clean-out Plate OM-633 Open Drain* Drain Connection DI/RO Water Unit Float Operated Water Make-up Valve Overflow - ¾" (20 mm) ¼" (6 mm) NPT
START-UP PROCEDURE Introduction After the system has been properly installed and connected to both electrical and water supplies, it may then be started. Start-up and Checkout Procedures Mounting Check mounting to see that unit is level and securely supported before filling with water. Piping Verify that all piping connections have been completed as recommended and that water pressure is available.
RECOMMENDED MAINTENANCE VAPORSTREAM® Model VLC Only Using softened water will significantly reduce mineral build-up in the humidifier. When softened water is not available, the VAPORSTREAM VLC is designed to deal with water hardness in one of two ways depending on the degree of hardness. For light to moderate hardness, up to 10 grains per gallon ( 170 mg/l), using the surface water skim time feature with annual cleaning is recommended.
REPLACEMENT PARTS VAPORSTREAM® Model VLC Humidifier OM-907 No. Description Part No.
REPLACEMENT PARTS VAPORSTREAM Model VLDI Humidifier OM-908 No. Description Part No.
MAINTENANCE SERVICE RECORD DATE INSPECTED PERSONNEL OBSERVATION ACTION PERFORMED 21
MAINTENANCE SERVICE RECORD DATE INSPECTED 22 PERSONNEL OBSERVATION ACTION PERFORMED
TWO-YEAR LIMITED WARRANTY DRI-STEEM Humidifier Company (“DRI-STEEM”) warrants to the original user that its products will be free from defects in materials and workmanship for a period of two (2) years after installation or twenty-seven (27) months from the date DRI-STEEM ships such product, whichever date is the earlier.
14949 Technology Drive • Eden Prairie, MN 55344 Phone: (612) 949-2415 • 800-328-4447 • Fax: (612) 949-2933 E-Mail: sales@dristeem.com • Web: www.dristeem.com Europe Office: Bell Place, Bell Lane • Syresham, Brackley • NN13 5HP, U.K. Phone: +44 1280 850122 • Fax: +44 1280 850124 E-Mail: 106277.1443@compuserve.com Printed on recycled paper. Minimum 10% Post-consumer Waste.
