Vaporstre a m E le ctric-to-S te a m H umidifica tion S y ste m PR 0 DU C T C ATALOG ® Now with Vapor-logic 4 controller: • Web-enabled access ® • Interoperability via Modbus or optional ® ® BACnet MS/TP or LonTalk ®
High-performance humidification Application versatility From providing comfort humidity to meeting the strictest clean-room requirements, the Vaporstream electric humidifier is an industrial-grade unit designed to meet the humidification demands of any building environment. Vaporstream models and options include multiple control capabilities, a broad capacity range, and compatibility with all water types.
Va p o r s t r e a m f e a t u r e s a n d b e n e f i t s Proven performance • Consistent and reliable RH control to ±1% • On-off or time-proportioned (TP) control for application control in most environments; solid-state relay (SSR) option for tighter control • Electronically monitored water level ensures safe and reliable operation Application flexibility • Uses tap, softened, or DI/RO water • Broad capacity range from 5.7 to 285 lbs/hr (2.
Va p o r- l o g i c 4 c o n t r o l l e r Accurate, responsive control Keypad/display Room RH Mode The Vapor-logic4 controller provides accurate, responsive RH control. PID control tunes the system for maximum performance. Set point Tank water level Softkeys for direct menu access Steam output Tank status Navigation buttons for item selection System alarms System messages Modbus, BACnet MS/TP, or LonTalk allow interoperability with multiple building automation systems.
Va p o r s t r e a m p r i n c i p l e o f o p e r a t i o n Figure 5-1: Vaporstream principle of operation Standard water system shown 1 Fill valve 5 Vapor hose or pipe 2 Water level control 4 Skimmer port 3 Heating element VLC-OM-002 1. When the system is first activated, the fill valve opens and the evaporating chamber fills with water to the operating level. 2. The operating level is maintained by the water level control. 3.
Va p o r s t r e a m c o m p o n e n t s Figure 6-1: Vapor-logic4 keypad/display Figure 6-2: Vaporstream components 9 10 8 7 4 5 3 1 6 2 VLC-OM-001X 1. Vapor-logic4 controller Vapor-logic4 controls all humidifier functions and can connect to a building automation system via Modbus or optional BACnet MS/TP or LonTalk. See Page 4 for more information. 2. Water level control Tap or softened water systems control water levels electronically using a three-rod probe (Figure 7-1).
Va p o r s t r e a m c o m p o n e n t s 5. Heating elements Low-watt-density Incoloy-sheathed heating elements ensure operation for many seasons. Constant expansion and contraction of heating elements sheds mineral scale. In the unlikely event of heater failure, heating elements can be removed easily. Figure 7-1: Water level control for standard-water humidifier 6. Terminal strip Fill valve closes when water level rises to this probe.
Va p o r s t r e a m c a p a c i t i e s a n d e l e c t r i c a l specifications Table 8-1: Vaporstream VLC capacities and electrical specifications, standard water and DI/RO water Model (kWstages) * Current draw (amps) Maximum steam capacity † Heaters Single-phase Three-phase*** kW lbs/hr kg/h Qty. Stages** 120V 208V* 240V* 277V* 480V* 600V* 208V* 240V* 277V* 480V* 600V* 2-1 5.7 2.6 1 1 16.7 9.6 8.3 7.2 4.2 3.3 — — — — — 2 3-1 8.6 3.9 1 1 25.0 14.4 12.5 10.
Va p o r s t r e a m w e i g h t s a n d cabinet sizes Table 9-1: Vaporstream VLC weights and control cabinet sizes, standard water and DI/RO water Model (kWstages) Shipping weight Control cabinet size* (M, L, XL, XXL) Operating weight † Single-phase power Three-phase power lbs kg lbs kg 120V 208V 240V 277V 480V 600V 208V 240V 277V 480V 600V 2-1 35 16 79 36 M M M M M M — — — — — 3-1 35 16 79 36 M M M M M M — — — — — 4-1 35 16 79 36 M M M M M M
Va p o r s t r e a m d i m e n s i o n s Figure 10-1: Vaporstream VLC dimensions, standard water and DI/RO water A C C' B A’ B’ VLC-OM-039 mc_030410_0900 Table 10-1: Vaporstream VLC dimensions, standard water and DI/RO water Without mounted control cabinet Model (kW - stages) A (length) B (width) C (height) inches mm inches mm inches mm 12.52 318 26.00 660 18.88 480 6-1, 9-1, 12-1, 16-1, 21-1, 25-1 17.85 453 22.00 559 18.88 480 12-2, 18-2, 24-2, 32-2, 42-2, 50-2 25.
Va p o r s t r e a m c o n t r o l c a b i n e t s Control cabinet features Figure 11-1: Vaporstream model 6-1 with mounted control cabinet The standard Vaporstream control cabinet is an ETL- and C-ETL-listed NEMA-12 cabinet and is shipped loose. Control cabinet options include: • • • • Factory mounting on humidifier NEMA-4 cabinet Cabinet door interlock switch Cabinet door lock The control cabinet's size is based on capacity and system options.
Va p o r s t r e a m m o u n t i n g Figure 12-1: Trapeze hanger Vaporstream Models 2-1 through 5-1 Vaporstream Models 6-1 through 100-4 Secure rods to an overhead structure that is strong enough to support the Vaporstream's operating weight. See the weight tables in this document. Secure channel to an overhead structure that is strong enough to support the Vaporstream's operating weight. See the weight tables in this document.
Va p o r s t r e a m m o u n t i n g Table 13-1: Wall brackets Dimension A (center to center of mounting holes) Vaporstream model inches mm One-heater models: 2-1, 3-1, 4-1, 5-1 17 432 Three-heater models: 6-1, 9-1, 12-1, 16-1, 21-1, 25-1 17 432 Six-heater models: 12-2, 18-2, 24-2, 32-2, 42-2, 50-2 17 432 Nine-heater models*: 18-3, 27-3, 36-3, 48-3, 63-3, 75-3 28 711 Twelve-heater models*: 24-4, 36-4, 48-4,64-4, 84-4, 100-4 34 864 * Wall bracket installation on metal stud walls is not rec
Va p o r s t r e a m V L C p i p i n g : Standard water Figure 14-1: Field piping overview, Vaporstream VLC with standard water Steam outlet Shock arrester recommended to reduce water hammer Install level Water supply line; water pressure 25 to 80 psi (172 to 552 kPa); water conductivity 100 μS/cm minimum. If water piping to humidifier is nonmetallic, first 3' (1 m) of water supply piping from humidifier should be metallic.
Va p o r s t r e a m V L C p i p i n g : DI/RO water Figure 15-1: Field piping overview, Vaporstream VLC with DI/RO water Steam outlet Install level Overflow Optional condensate return piping from dispersion unit Water supply line; water pressure 25 psi to 80 psi (172 kPa to 552 kPa); first 3' (1 m) should be stainless steel tubing. To isolate steam during system maintenance, put a 2" (50 mm) water seal or loop in supply line.
Va p o r s t r e a m o u t d o o r e n c l o s u r e overview Figure 16-1: Outdoor enclosure Outdoor humidifier operation in any climate is possible with the DRI-STEEM outdoor enclosure. The prepiped, factory-assembled unit ships complete to the job site. Installation is a snap with various mounting options — curb, legs, or flush. Factory constructed and assembled. The outdoor enclosure is shipped complete with the humidifier preinstalled and tested.
Va p o r s t r e a m o u t d o o r e n c l o s u r e Figure 17-1: Typical rooftop installation overview Figure 17-2: Outdoor enclosure clearances Left side: 12” (305 mm) Top: 12” (305 mm) Humidifier in outdoor enclosure Back: 24” (610 mm) Roof surface Electrical connections Front: 36” (914 mm) Steam piping Right side: 36” (914 mm) Curb Remote Vapor-logic4 keypad OM-955 Drain piping Water piping OM-7464 Figure 17-3: Optional installation method for water supply piping Normally closed fill valve
Va p o r s t r e a m o u t d o o r e n c l o s u r e Figure 18-1: Vaporstream outdoor enclosure with standard or optional steam outlet, elevation view Notes: 1. The outdoor enclosure has two available steam distribution configurations: Vaporstream humidifier The standard configuration has a steam outlet at the back of the outdoor enclosure for connecting to steam dispersion unit piping.
Va p o r s t r e a m o u t d o o r e n c l o s u r e Figure 19-1: Vaporstream outdoor enclosure, top view B Pipe chase extending 1" (25 mm) above floor E H Standard steam outlet (exits enclosure here) C D Optional steam outlet (exits enclosure through pipe chase) J F Vaporstream humidifier Side access door Control cabinet Note: Some 9-12 heater models have control cabinet mounted on humidifier Side section heater Intake ventilation fan Front section optional heater Enclosure drain Front access do
Va p o r s t r e a m w e a t h e r c o v e r The optional Vaporstream weather cover is water-resistant and designed to protect the humidifier from rain and sun. The weather cover has been tested and approved by ETL Testing Laboratories, Inc., and is listed to UL Standard 1995 and certified to CAN/CSA Standard C22.2 No. 236.
Drip-free dispersion basics Guaranteed non-wetting distances For more about dispersion, see Pages 22 – 31. Using data collected in our on-site test lab, we have developed guaranteed steam absorption (non-wetting) distances. Performance charts allow you to confidently choose equipment that will accommodate any application.
Va p o r s t r e a m s t e a m d i s p e r s i o n o p t i o n s Ultra-sorb® Figure 22-1: Ultra-sorb dispersion • Double-header design • Shortest non-wetting distance; install within inches of upstream dampers, coils, or elbows without dripping • Steam capacity up to 1,850 lbs/hr (839 kg/h) • Factory assembled for easy installation • High-efficiency tube option VLC-OM-13 Rapid-sorb® • • • • • Figure 22-2: Rapid-sorb dispersion Single-header design Short non-wetting distance Steam capacity up to 800 lb
Va p o r s t r e a m s t e a m d i s p e r s i o n o p t i o n s Space Distribution Units (SDUs) • For remotely dispersing steam into large open spaces • Designed for use in finished spaces • Useful where there are no air ducts • SDU-E: external absorption at capacities up to 102 lbs/hr (46.3 kg/h) • SDU-I: internal absorption at capacities up to 30 lbs/hr (13.
Calculating non-wetting distances Guaranteed absorption Sample exercise • Cataloged and guaranteed steam absorption distances Read through this exercise to learn more about specifying a dispersion unit based on non-wetting distance. Assume you have chosen to use Ultra-sorb units because you want pre-assembled panels.
Ultra-sorb dispersion Figure 25-1: Ultra-sorb non-wetting distances Note: The above data apply to all air velocities up to 1,500 fpm (7.6 m/s), and are based on air leaving the zone of humidification at conditions of 55 °F (13 °C) and the stated % RH. The blue lines in the graph refer to the sample exercise described on Page “Sample exercise” on page 24.
Ultra-sorb dimensions Ultra-sorb LV Figure 26-1: Ultra-sorb LV dimensions • Vertical dispersion tubes • Suitable for AHUs or ductwork • Use when duct height is greater than duct width E Top view A' G • May use with pressurized or evaporative steam (horizontal airflow only) Supply header Dispersion tubes For Ultra-sorb Model LH (horizontal tubes), see the Ultra-sorb Steam Dispersion Panels Product Catalog (available at www.dristeem.com).
Rapid-sorb dispersion Figure 27-1: Rapid-sorb non-wetting distances NON-WETTING DISTANCE IN INCHES 90 LEAVING % RH 80 70 60 50 40 0 0 10 20 30 40 50 60 70 80 6” 90 ENTERING % RH 9” 12” 18” 24” DISPERSION TUBE SPACING Note: The above data apply to all air velocities up to 1,500 fpm (7.6 m/s) and are based on air leaving the zone of humidification at 55 °F (13 °C) and the stated % RH.
Rapid-sorb dimensions Figure 28-1: Rapid-sorb dimensions A E 1½" (DN40) dia. dispersion tubes use slip coupling B 2" (DN50) dia. dispersion tubes use hose cuff and clamps Header outside duct C Pitch header toward drain Escutcheon plate F Header inside duct or AHU D OM-3005 Note: Add water seal to condensate drain as shown in the Dri-calc Installation Guides or the humidifier’s Installation, Operation, and Maintenance manual.
Single tube dispersion Figure 29-1: Single tube non-wetting distances NON-WETTING DISTANCE IN INCHES 90 LEAVING % RH 80 70 60 50 40 0 0 10 20 30 40 50 60 ENTERING % RH 70 80 90 9” 12” 18” 24” DUCT HEIGHT Note: The above data apply to all air velocities up to 1,500 fpm (7.6 m/s) and is based on air leaving the zone of humidification at 55 °F (13 °C) and the stated % RH.
SDU-E and SDU-I dispersion Table 30-1: SDU-E minimum nonwetting distances 40% RH @ 70 °F (21 °C) Maximum steam capacity kW Rise Spread 50% RH @ 70 °F (21 °C) Throw Rise Spread 60% RH @ 70 °F (21 °C) Throw Rise Spread Throw lbs/hr kg/h ft m ft m ft m ft m ft m ft m ft m ft m ft m 2 6 2.7 1.0 0.3 1.0 0.3 5.0 1.5 1.5 0.5 1.5 0.5 6.5 2.0 2.5 0.8 2.5 0.8 7.5 2.3 4 12 5.4 1.0 0.3 1.0 0.3 5.0 1.5 1.5 0.5 1.5 0.5 6.5 2.0 2.5 0.8 2.5 0.8 7.
Area-type dispersion Table 31-1: Area-type (evaporative steam) minimum non-wetting distances* 60 °F (16 °C) Maximum steam capacity 30% RH Rise Spread 40% RH Throw Rise Spread 50% RH Throw Rise Spread Throw lbs/hr kg/h ft m ft m ft m ft m ft m ft m ft m ft m ft m 50 20 1.0 0.3 2.0 0.6 6.0 1.8 1.0 0.3 2.0 0.6 6.0 1.8 1.0 0.3 2.5 0.8 6.0 1.8 75 34 3.0 0.9 3.0 0.9 8.0 2.4 3.0 0.9 3.0 0.9 8.0 2.4 3.0 0.9 4.0 1.2 8.0 2.4 100 45 4.0 1.2 4.
Conserving resources through better performance Expect quality from the industry leader For more than 45 years, DRI-STEEM has been leading the industry with creative and reliable humidification solutions. Our focus on quality is evident in the construction of the Vaporstream humidifier, which features cleanable, stainless steel construction. DRI-STEEM also leads the industry with a Two-year Limited Warranty and optional extended warranty. For more information www.dristeem.com sales@dristeem.
