Vapormis t ® Electric-to-Stea m Humidification Sy s t e m PR0DUCT CATALOG
Easy to install and maintain Figure -1: Matching dispersion cabinet Installs in a snap! The Vapormist® humidifier is a compact, cabinet-style humidifier with a history of reliably and efficiently providing humidification steam. Installation is a snap — just attach the frame to a supporting structure and connect the services. Maintenance is easy, too. Remove the resin cover and all components are accessible for service.
Va p o r m i s t f e a t u r e s Proven performance Guaranteed absorption • Control to ±3% RH • Electronically monitored water level ensures safe and reliable operation • Diagnostic test at unit start-up verifies system performance • Cataloged and guaranteed steam absorption distances • Unique tubelets in dispersion tubes eliminate condensate drips • Published absorption tables for sizing and selecting the correct dispersion option • Dri-calc® software available for computer calculation of absorption di
Va p o r m i s t c o m p o n e n t s Figure -1: Water level control for standard water systems Figure -2: Vapormist components 5 6 4 7 2 3 Fill valve closes 1 Fill valve opens Low-water cutoff Systems using tap or softened water control water levels electronically using a threerod probe. The controller responds with the above actions when the water level reaches each rod. OM-402-2 VLC-OM-030 1. Control cabinet The Vapor-logic3 controller controls all functions of the humidifier.
Va p o r m i s t 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. 6. Removable cover A removable cover allows easy access to the evaporating chamber, electrical connections, and drain.
Va p o r m i s t p r i n c i p l e o f o p e r a t i o n Figure -1: Vapormist principle of operation Standard water system (shown with cover removed) 1 4 3 2 OM-2000 1. When the system is first activated, the fill valve opens and the evaporating chamber fills with water to the operating level. 2. On a call for humidity, the heating elements are energized, causing the water to boil. The fill valve opens and closes as needed to maintain the operating water level. 3.
C o n t r o l w i t h Va p o r- l o g i c 3 Accurate, responsive microprocessor control Vapor-logic3 provides exceptional functionality, ease of use, and accurate RH control. Standard on all Vapormist models, this controller features: Figure -1: Vapor-logic3 keypad • Real-time clock allows time-stamped alarm tracking and three ways to program drain and flush cycles: 1. Usage (unit drains after a set number of pounds of water have cycled through) 2.
Drip-free dispersion basics Guaranteed absorption distances Figure -1: DRI-STEEM dispersion tubes Using data collected in our on-site test lab, we have developed guaranteed steam absorption distances. Performance charts allow you to confidently choose equipment that will accommodate any application. Dry steam DRI-STEEM’s dispersion tubes are fitted with one or two rows of closely-spaced thermalresin tubelets to evenly disperse steam across the airstream.
Va p o r m i s t 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 Space Distribution Units (SDUs), designed for use in finished spaces, disperse steam into large open spaces and are particularly useful where there are no air-handling ducts. Figure -1: SDU-E There are two SDU models: SDU-I (steam absorbs within the enclosure with no visible vapor) and SDU-E (visible steam absorbs outside the enclosure).
Va p o r m i s t s t e a m d i s p e r s i o n o p t i o n s Figure 10-1: Ultra-sorb dispersion OM-636-1 Figure 10-2: Rapid-sorb dispersion Ultra-sorb The multiple-tube Ultra-sorb allows virtually instantaneous steam absorption. The factoryassembled panel can be installed within inches upstream of dampers, coils or elbows without dripping. The Ultra-sorb’s steam downflow design allows for high capacity dispersion. The unit is preassembled at the factory within a mounting frame, and installs easily.
Va p o r m i s t s p e c i f i c a t i o n s Table 11-1: Vapormist specifications, capacities, and weights Model Current draw (amps) Maximum steam capacity Single-phase Weights ‡ Three-phase Shipping Operating kW lbs/hr kg/h 120V 208V* 240V* 480V† 600V† 208V* 240V† 480V† 600V† lbs kg lbs kg 2 6 2.7 16.7 9.6 8.3 4.2 3.3 — — — — 80 36 95 43 4 12 5.4 33.3 19.2 16.7 8.3 6.7 16.7** 14.4** 7.2** 5.8** 80 36 95 43 6 18 8.2 — 28.8 25.0 12.5 10.0 25.
Va p o r m i s t d i m e n s i o n s Figure 12-1: Dimensions 24.2" (614 mm) Top view 2" (50 mm) 10.9" (276 mm) 2" (50 mm) 1" (25 mm) 2.25" (57 mm) Power wiring knockout Steam outlet Control or SDU wiring knockout Venting Front view Left side view 18.6" (472 mm) 1.50" (38 mm) 2.25" (57 mm) ¾" pipe thread (DN20) frame drain 5.75" (146 mm) 16.1" (409 mm) ¾" pipe thread (DN20) tank drain Bottom view 0.50" (13 mm) hole in base for water fill line 0.75" (19 mm) 0.63" (16 mm) 2.
Va p o r m i s t m o u n t i n g Vapormist and SDU mounting Figure 13-1: Vapormist with an SDU-I Keyhole for 3/8" dia. (M10) fasteners Mount the Vapormist and SDU to wall studs using the template on the box. Two lag bolts are provided with each unit. 16" (406 mm) SDU chassis SDUs can be mounted directly above the Vapormist cabinet (as shown at left) or remotely. Maintain clearances as shown below. Provide at least 6" (152 mm) clearance on each side of an SDU when mounted remotely.
Va p o r m i s t p i p i n g , standard water models Figure 14-1: Vapormist (standard water models) field piping overview Water supply line; water pressure must be between 25 psi and 80 psi (175 kPa and 550 kPa); water conductivity minimum 100 µS/cm. If water piping to humidifier is nonmetallic, we recommend that the first 3' (1 m) of water supply piping from the humidifier be metallic Steam vapor hose (maximum run 10' [3 m]). May also use pipe or tubing.
Va p o r m i s t p i p i n g , DI/RO water models Figure 15-1: Vapormist-DI (deionized/reverse osmosis water models) field piping overview Steam vapor hose (maximum run 10' [3 m]). May also use pipe or tubing. See the DRI-STEEM Design Guide for maximum pipe or tubing lengths.
Calculating non-wetting distances Notes: Sample exercise • Final equipment selection should account for condensate loss. See the DRI-STEEM Design Guide for steam loss tables. • Dispersion assembly should accommodate maximum output capacity of humidifier. To learn more about how to specify a dispersion unit based on nonwetting distance, read the sample problem below. For purposes of this sample problem, assume you have chosen to use Ultra-sorb units because you want pre-assembled panels.
Ultra-sorb dispersion Figure 17-1: Ultra-sorb non-wetting distances 3" 6" 9" 12" Note: The above non-wetting data applies to all air velocities up to 2,000 fpm (10.2 m/s), and is 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 16.
Ultra-sorb dimensions Figure 18-1: Ultra-sorb Model LV dimensions E A' G Supply header Dispersion tubes Top view G Header enclosure C Mounting flange F B Header B' Condensate header D A Elevation view Header H E Side view OM-123us Table 18-1: Ultra-sorb Model LV dimensions Dimension Description Inches (mm) A Overall width 15" (381) minimum to 147" (3734) maximum in 1" (25) increments A' Face width 12" (305) minimum to 144" (3658) maximum in 1" (25) increments B Overall height 21" (5
Rapid-sorb dispersion Figure 19-1: Rapid-sorb non-wetting distances 6" 9" 12" 18" 24" Note: The above non-wetting data applies to all air velocities up to 2,000 fpm (10.2 m/s), and is based on air leaving the zone of humidification at conditions of 55 °F (13 °C) and the stated % RH.
Rapid-sorb dimensions Figure 20-1: 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 Vapormist Installation, Operation and Maintenance manual.
Single tube dispersion Figure 21-1: Single tube non-wetting distances 18" 12" 9" 24" Note: The above non-wetting data applies to all air velocities up to 2,000 fpm (10.2 m/s), and is based on air leaving the zone of humidification at conditions of 55 °F (13 °C) and the stated % RH. Figure 21-2: Single tube without and with condensate drain Capacity Without drain Pitch: See Notes Table 21-1: Single tube capacities Pitch 2"/ft (15%) Tube size 4.
Space Distribution Unit dispersion As steam is discharged from the SDU-E, it quickly cools and turns to a visible fog that is lighter than air. As this fog is carried away from the SDU-E by the airstream, it tends to rise toward the ceiling. If this fog contacts solid surfaces (columns, beams, ceiling, pipes, etc.) before it disappears, it can collect and drip as water. The greater the space relative humidity, the more the fog will rise, throw and spread.
Space Distribution Unit dispersion Figure 23-1: SDU-I mechanical detail Figure 23-3: SDU-E drain line piping Side view Front view 24.2" (615 mm) Humidified air discharge grille Install SDU-E frame plumb and level 16.1" (409 mm) 18.6" (472 mm) 10.9" (276 mm) Union Elbow Drain 1½" (DN40) steam inlet Air intake grille 2.25" (57 mm) DC-1076 1" (25 mm) air gap Figure 23-2: SDU-E mechanical detail Front view Steam outlet 16.1" (409 mm) 24.2" (615 mm) ¾" (DN20) pipe thread drain nipple.
Va p o r m i s t a c c e s s o r i e s Expect quality from the industry leader Dri-calc For more than 40 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 Vapormist, which features cleanable, stainless steel construction, and an industry-leading two year warranty that covers all parts.
