VAPORSTREAM Models VLC and VLDI

1 READ AND SAVE THESE INSTRUCTIONS.. VAPORSTREAM . Models VLC and vldi . ELECTRIC STEAM HUMIDIFIERS. Installation Instructions and Maintenance Operations Manual 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. Most of the application material will apply to both units. When information differs for the two units, it will be noted as such. DRI-STEEM Humidifier Company VAPORSTREAM Models VLC and vldi .. 3. Capacities and Electrical Specifications .. 4. Mechanical Specifications.

2 5. VAPORSTREAM model VLC Area-Type Humidifier .. 6. Mounting Methods Mounting Procedures .. 7. Dispersion Tube Installation .. 9. RAPID-SORB Assembly Horizontal Duct Installation .. 11. Vertical Duct Installation .. 12. Installation Requirements Electrical .. 13. Drain Piping .. 15. Make-up Water 15. Vapor Hose Piping .. 15. Piping Diagrams: Steam, Water and Drain .. 16. Start-up Procedure .. 18. Operation .. 18. Maintenance .. 19. Trouble-Shooting Guide .. 19. Replacement Parts .. 20. Maintenance Service Record .. 22. Two-Year Limited Warranty .. 24. 2. VAPORSTREAM Models VLC AND vldi . VAPORSTREAM VLC. Electric Humidifier State-of-the-art technology in a Duct simple, low-maintenance humidi- fier. Dispersion Tube This humidifier is designed to be used with either softened or Thermal Cut-Out unsoftened water (preferably softened). The probe-type level Raised Heater control system requires water Cover conductivity of 100 S/cm (34 mg/l) minimum to function, Cover Knobs and therefore will not operate on Evaporating Chamber water treated by reverse osmo- Skimmer Port Outlet sis or deionization.

3 However, Fill Valve VAPORSTREAM model VLC. Needle Valve humidifiers are available for use Manual or Electric with these water types. The VAPOR-LOGIC Drain Valve standard humidifier can be Clean-out Tray converted in the field to a vldi . model . See below. Probes Control Cabinet OM-628. VAPORSTREAM vldi . Option For use with deionized or reverse osmosis water. This unit produces chemical-free steam Cover Knobs and reliable, accurate humidifica- tion control. It is virtually mainte- Cover nance-free with no wasted water, no wasted heat, and very 3/4" Overflow little or no downtime. Float Valve Low-Water Cut-Off 3/4" SST Drain Valve OM-1000. 3. CAPACITIES AND ELECTRICAL SPECIFICATIONS. Table 4-1: Capacities and Electrical Specifications Current Draw (A). heaters Control model Single Phase Three Phase Cabinet Number Sizes**. Capacities Capacities Qty Stages* 230V kW 400V kW. (kg/h) (kg/h). VLC/ vldi . 2-1 1 1 M.

4 3-1 1 1 M. 4-1 1 1 M. 5-1 1 1 M. VLC/ vldi . 6-1 3 1 6 M. 9-1 3 1 9 M. 12-1 3 1 12 M. 16-1 3 1 16 M. 21-1 3 1 21 M. 25-1 3 1 25 M. VLC/ vldi . 12-2 6 2 12 M. 18-2 6 2 18 M. 24-2 6 2 24 M. 32-2 6 2 32 M. 42-2 6 2 42 M. 50-2 6 2 50 M. VLC/ vldi . 18-3 9 3 26 18 L. 27-3 9 3 39 27 L. 36-3 9 3 52 36 L. 48-3 9 3 48 L. 63-3 9 3 63 L. 75-3 9 3 75 L. VLC/ vldi . 24-4 12 4 24 XL. 36-4 12 4 52 36 XL. 48-4 12 4 48 XL. 64-4 12 4 64 XL. 84-4 12 4 84 XL. 100-4 12 4 100 XL. *Heater stage identifies the number of contactors. Table 4-2: Control Cabinet Dimensions * *Refer to table 4-2 for Control Cabinet Dimensions. Shipping Size Milimeters Wt. Series M 355 w x 400 h x 150 d 15 kg Capacity Notes Approximately 400 kJ are required to raise the temper- Series L 500 w x 500 h x 180 d 25 kg ature of one kg of water from 5 to 100 C. An addi- Series XL 600 w x 600 h x 180 d 33 kg tional 2230 kJ are required to change one kg of water to water vapor.

5 The addition of 20 mm rigid foil faced fiberglass insula- Use the following steam loss guidelines: tion (optional) on all surfaces of evaporating chamber vapor hose: 223 g/m/h will increase unit efficiency by approximately 2%. insulated pipe: 74 g/m/h Another factor to consider is condensation steam loss dispersion tubes: 744 g/m/h from hoses and tubes. 4. MECHANICAL SPECIFICATIONS. Table 5-1: Mechanical Specifications A B C Weight Weight model Empty Full Number mm mm mm (kg) (kg). VLC/ vldi . 2-1 515 430 190 16 36. 3-1 515 430 190 16 36. 4-1 515 430 190 16 36. 5-1 515 430 190 16 36. VLC/ vldi . 6-1 560 465 325 26 71. 9-1 560 465 325 26 71. 12-1 560 465 325 26 71. 16-1 560 465 325 26 71. 21-1 560 465 325 26 71. 25-1 560 465 325 26 71. VLC/ vldi . 12-2 560 465 515 36 108. 18-2 560 465 515 36 108. 24-2 560 465 515 36 108. 32-2 560 465 515 36 108. 42-2 560 465 515 36 108. 50-2 560 465 515 36 108. VLC/ vldi .

6 18-3 560 465 705 50 148. 27-3 560 465 705 50 148. 36-3 560 465 705 50 148. 48-3 560 465 705 50 148. 63-3 560 465 705 50 148. 75-3 560 465 705 50 148. VLC/ vldi . 24-4 560 465 900 70 194. 36-4 560 465 900 70 194. 48-4 560 465 900 70 194. 64-4 560 465 900 70 194. 84-4 560 465 900 70 194. 100-4 560 465 900 70 194. Figure 5-1: Dimensions A C. 95. mm B. 100. Back View Side View Front View OM-626 mm 5. VAPORSTREAM model VLC Area-Type Humidifier Area-Type Humidifier Application Table: 6-1: Minimum Distance for Rise, Spread and Throw Information The operating characteristics of Area-Type Space Space 20 45 65 90 110 130. steam humidifiers should be considered when Temp kg/h kg/h kg/h kg/h kg/h kg/h selecting humidifier capacities and choosing mounting locations. Rise m m m m m m 30% Spread m m m m m m Steam discharge from the humidifier quickly cools and turns to visible, warm, microscopic Throw m m m m m m drops or particles of water (fog) which are Rise m m m m m m lighter than air.

7 16 C 40% Spread m m m m m m Should this fog contact any solid surface Throw m m m m m m (columns, beams, ceiling, pipes, etc.) before it disappears, it may collect and drip, as water. Rise m m m m m m 50% Spread m m m m m m The greater the space relative humidity, the higher and farther the "fog" will carry and rise Throw m m m m m m in the space before disappearing. Rise m m m m m m 30% Spread m m m m m m The table at right states the vertical (rise), horizontal (throw), and width (spread) dimen- Throw m m m m m m sions that can be expected with the Rise m m m m m m Area-Type humidifiers. 21 C 40% Spread m m m m m m To avoid steam impingement on surrounding Throw m m m m m m areas, these dimensions should be observed. Rise m m m m m m Note: Tank dimension C, in Figure 5-1 on 50% Spread m m m m m m page 5, must be at least 325 mm and output should not exceed 130 kg/h. Throw m m m m m m Figure 6-1: Principle of Operation Fan Steam created in the evaporating chamber (1), flows up through the chute (2), and is distributed into the space (3) via the fan.

8 Steam Chute .. heaters OM-681. 6. MOUNTING METHODS. Mounting Procedures settles to the bottom. A clean-out tray on the floor of For proper operation of the electrode probe water level the evaporator may be removed periodically through control and the skimmer system, the humidifier must be the front clean-out opening. Allow space for withdrawal mounted level in both directions. of the tray when installing the humidifier. Access (460 mm minimum) for periodic removal of the In some installations, an overflow drain pan may be top cover is recommended. The cover is removed for necessary to prevent possible damage to flooring. This inspection and cleaning of the evaporating chamber. In may be caused by a rapid or sudden drainage of the most cases, scale that forms on the heating elements contents of the humidifier. The drain pan must be continuously flakes off as it forms and the loose scale connected to the sanitary waste water system.

9 Figure 7-1: Mounting Support Methods Floor Stand Method Trapeze Hanger Method Wall Brackets Method Secure rods to 625 mm overhead construction Steam Dispersion Tube Provide 460 mm min. clearance under duct Threaded rod of for cover removal DRI-STEEM A. size required wall brackets Angle or channel (optional). DRI-STEEM support of size required 2 required 560 mm legs (optional). Cleanout OM-647 OM-648. OM-646 Dimensions Unit A. 3 Heater 480 mm 6 Heater 480 mm 9 Heater 760 mm 12 Heater 915 mm Figure 7-2: Mounting Unit Below Duct Mounting humidifier 460 mm below duct is recommended to facilitate cover removal. Steam Dispersion Tube Clamp Two-piece Escutcheon Plate Cut hole in duct large fastens to bottom of duct enough to allow (duct omitted for clarity) passage of hose clamp Vapor Hose Bottom of Duct Two-piece Escutcheon Plate Cover of VAPORSTREAM 460 mm min. Humidifier Cover of VAPORSTREAM . Humidifier OM-65 OM-66.

10 7. MOUNTING METHODS. Figures 8-1 and 8-2: Mounting Units Away from Duct(s) Using Vapor Hose Vapor hose (pitch back 165 mm/m to humidifier with supports to Vapor hose (pitch back prevent sagging). Maximum length 3 m. Humidifier should be 165 mm/m to humidifier mounted level. with supports to prevent sagging). Maximum length is 3 m. Zone Valves 25 mm x 25 mm x 6 mm Stainless steel dispersion tube in middle Angle Iron Support Legs of duct. Pitch as shown in figure 11-1. OM-638 (optional). Maximum tube length is 3 m. Humidifier should be mounted level OM-639. Figure 8-3: Mounting In Air Handling Unit Outdoor and Return Airflow into Air Handling Unit Gasketed Access Door Air Handling Unit Casing Airflow Filter and Mixing Box Air Handling Unit Coil Section Supply Air Duct Humidifier Centered in Air Handling Unit Set unit level. Locate unit so that steam dispersion assembly is in the most active part of the air stream.