HIGH-PRESSURE ATOMIZING SYSTEM. Humidification and adiabatic cooling. Energy efficient Reduces cooling load Multiple zone capabilities

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1 HIGH-PRESSURE ATOMIZING SYSTEM Humidification and adiabatic cooling Energy efficient Reduces cooling load Multiple zone capabilities Preliminary 02071

Advanced, efficient humidification PURE PRESSURIZED WATER AND MICRO-TURBINE INJECTION NOZZLES The DriSteem High-Pressure Atomizing System provides high-quality, industrialgrade humidification

This fragments water droplets into ultra-fine particles that quickly absorb in warm air-handler airstreams or open spaces.

2 Advanced, efficient humidification PURE PRESSURIZED WATER AND MICRO-TURBINE INJECTION NOZZLES The DriSteem High-Pressure Atomizing System provides high-quality, industrialgrade humidification solutions suitable for a wide variety of applications. The system s high-pressure pump propels purified, unheated water past a small turbine inside each dispersion nozzle. This fragments water droplets into ultra-fine particles that quickly absorb in warm air-handler airstreams or open spaces. ENERGY-EFFICIENT HUMIDIFICATION DriSteem s High-Pressure Atomizing System uses heat already present in air to evaporate evenly-distributed water droplets. In warm, dry applications, atomization is the most energy-efficient humidification system. REDUCES COOLING LOAD As atomized water droplets are absorbed, the evaporation causes air temperature to drop, reducing the cooling load. This provides significant energy savings when cooling and humidifying simultaneously. DriSteem High-Pressure Atomizing System installed in an air handler REDUCES WATER WASTE The system s Vapor-logic controller monitors multiple conditions to modulate and control nozzle operation. This optimizes absorption and minimizes water waste. The benefits of humidification Improve indoor air quality Improve manufacturing processes Preserve materials and furnishings I mprove comfort for building occupants DriSteem High-Pressure Atomizing System installed in a large, open space 2 HIGH-PRESSURE ATOMIZING SYSTEM Preliminary 02071

droplets into ultra-fine particles (90% are ten microns or less) Integral check valve inside nozzle ensures no dripping when system shuts off Final evaporation media installed three feet (0.

3 Features and benefits THE MOST-ADVANCED ADIABATIC TECHNOLOGY Water under pressure up to 1200 psi (8.27 MPa) delivered to hi-tech atomizing nozzles; no pressurized air required Atomizing nozzles sized and manifolds configured per application requirements Micro-turbines in nozzles fragment water droplets into ultra-fine particles (90% are ten microns or less) Integral check valve inside nozzle ensures no dripping when system shuts off Final evaporation media installed three feet (0.9 m) or more downstream from heating coil prevents wetting farther downstream Extremely low installation and operation costs Humidifies and cools in air handlers, ducts, or open spaces System capacities from 250 to 5500 lbs/hr (11 to 2495 kg/h) COOLING EFFECT SAVES ENERGY Every pound of atomized humidification removes approximately 1000 Btu of heat from the air (every kg of atomized humidification removes approximately 2250 kj of heat from the air) Significant HVAC system energy savings occurs when cooling and humidifying simultaneously Utility rebates can offset costs LOW MAINTENANCE Stainless-steel pump is cooled by purified humidification supply water; 8,000 hours before maintenance check Stainless steel nozzles and manifolds require no maintenance NOZZLE COMPONENTS Thorough water filtration protects stainless-steel components from corrosion and undue wear 1 High-pressure water flows past a micro-turbine, breaking water into fine particles. 2 Water exits calibrated nozzle orifice, where water particle size is further reduced. 1 2 Integral check-valve eliminates dripping when nozzle shuts off. TIGHT CONTROL WITH VAPOR-LOGIC Accurate, responsive RH control; PID control tunes system for maximum performance Nozzle staging and pulsed modulation allow high turndown of system output Set up, view, and adjust system functions with keypad/display or with Web interface via Ethernet, either directly or remotely through a network Interoperability with multiple building automation systems via Modbus and optional BACnet or LonTalk protocols MULTIPLE-ZONE CAPABILITY IN ONE SYSTEM Humidify and cool multiple zones with differing RH needs in one system Individual zone monitoring and modulated staging valves provide tight control in all zones COMPLETE SOLUTION INCLUDING WATER TREATMENT System includes reverse osmosis (RO) hyperfiltration, particulate filtering, dechlorination, and duplex water softening Automatic back-flush technology ensures long RO membrane life Ultra-pure humidification eliminates white dust fallout and bacteria/virus proliferation that can occur when using potable water Preliminary HIGH-PRESSURE ATOMIZING SYSTEM

Sequence of operation A COMPLETE SYSTEM THAT INCLUDES WATER TREATMENT 1 Water enters system from municipal water supply 2 Dechlorinator (wall-mounted on smaller models) 8 Humidified zones: one, two,

4 Sequence of operation A COMPLETE SYSTEM THAT INCLUDES WATER TREATMENT 1 Water enters system from municipal water supply 2 Dechlorinator (wall-mounted on smaller models) 8 Humidified zones: one, two, or three stages per zone Zone 1 Duplex water softener 4 RO station with particulate filter and RO membranes 5 Pressurized RO holding tank 6 High-pressure pump station: All-stainless-steel axial-piston high-pressure pump delivers purified, high-pressure water to atomizing nozzles Vapor-logic controller optimizes absorption in multiple humidification zones 7 Main water line feeds network of highpressure, stainless-steel piping To solenoid valves Zone 1 control cabinet To network 8 Humidified zones: purified, ultra-fine water droplets exit micro-turbine nozzles and disperse in AHUs, ducts, and/or open spaces 1 Municipal water inlet 9 Final evaporation media (shown on Page 10) installed downstream of AHU heating coil prevents downstream wetting 2 Dechlorinator Duplex water softener 4 HIGH-PRESSURE ATOMIZING SYSTEM Preliminary 02071

Sequence of operation Zone 2 Zone Zone n To solenoid valves To solenoid valves To solenoid valves Zone 2 control cabinet Zone control cabinet Zone n control cabinet To network To network To network 7

5 Sequence of operation Zone 2 Zone Zone n To solenoid valves To solenoid valves To solenoid valves Zone 2 control cabinet Zone control cabinet Zone n control cabinet To network To network To network 7 Main water line 4 RO station: Particulate filter RO membranes 5 Pressurized RO holding tank 6 High-pressure pump station: High-pressure stainless steel pump Vapor-logic controller Preliminary HIGH-PRESSURE ATOMIZING SYSTEM 5

6 System dimensions Table 6-1: DriSteem High-Pressure Atomizing System dimensions 1 Dimension Model A 2 B C D E F G H inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm Notes: 1. Water treatment component sizing is based on city-treated water, up to 20-grain hardness, and 50 F (10 C) or higher. 2. Dimension given is maximum dimension when all components are located sequentially. Component locations are flexible; components may be placed in front of each other if floor space allows.. Add 6" (152 mm) when redundant high-pressure water pump option is used. 4. Wall-mounted dechlorinator. 6 HIGH-PRESSURE ATOMIZING SYSTEM Preliminary 02071

7 System dimensions DIMENSIONS B See Table " (1524 mm) Add 16" (406 mm) when redundant high-pressure water pump option is used E C 24" (610 mm) 8" (200 mm) 55" (197 mm) D A 4" to 8" (100 to 200 mm) 20" (508 mm) 8" (200 mm) F MINIMUM RECOMMENDED CLEARANCES 48" (1220 mm) 0" to 4" (0 to 100 mm) G 0" to 4" (0 to 100 mm) G 0" to 4" (0 to 100 mm) H OM-775X 48" (1220 mm) 8" (20 mm) 6" (915 mm) OM-775X-clearance 8" (20 mm) Preliminary HIGH-PRESSURE ATOMIZING SYSTEM 7

8 Specifications Table 8-1: High-pressure pump station specifications Model System capacity, lbs/hr (kg/h) System voltage/phase, Amp draw Fuse size Dimensions (W/D/H), inches (mm) Dimensions (W/D/H) with redundant high-pressure pump option, inches (mm) Weight, lbs (kg) Weight with redundant high-pressure pump option, lbs (kg) Supply water connection dia., inches* High-pressure water connection diameter, inches 5-micron prefilter diameter x height, inches (mm) High-pressure pump flow rate, gpm (L/m) High-pressure pump motor power, hp (kw) High-pressure pump motor rpm 250 (11) 240/1,.4 480/, /, /1, /, /, 10 24/24/ (227) 240/1, /, /, /1, /, /, 10 24/24/ (454) 240/1, /, /,.4 240/1, /, /, 10 24/24/ (794) 480/, /, /, /, 10 24/24/ (114) 480/, /, /, /, 10 24/0/ (1588) 480/, /, /, /, 10 24/0/ (2495) 480/, /, /, /, 15 24/0/60 (610/610/1524) (610/610/1524) (610/610/1524) (610/610/1524) (610/762/1524) (610/762/1524) (610/762/1524) 24/0/76 24/0/76 24/0/76 24/0/76 24/0/76 24/0/76 24/0/76 (610/762/190) (610/762/190) (610/762/190) (610/762/190) (610/762/190) (610/762/190) (610/762/190) 275 (125) 75 (170) 00 (16) 400 (181) 25 (147) 475 (216) 25 (147) 475 (216) /4 /4 /4 /4 /4 /4 /4 1/2 1/2 1/2 1/2 1/2 1/2 1/2 0.5 (1.89) 1 (0.75) 1.0 (.78) 1.5 (1.1) 2.0 (7.57) (2.2).5 (1.2) 5 (.7) 50 (159) 500 (227) 5 (18.9) 400 (181) 625 (284) 7 (26.5) 450 (204) 700 (18) * 0 psi (210 kpa) minimum supply water pressure 5 (.7) 7.5 (5.5) 11 (41.6) 10 (7.5) 8 HIGH-PRESSURE ATOMIZING SYSTEM Preliminary 02071

9 Specifications Table 9-1: RO station specifications Model System voltage/ phase, Amp draw with RO components Fuse size with RO components Dimensions (W/D/H), inches (mm) Shipping weight, lbs (kg) Supply water connection dia., inches ** RO water outlet connection dia., inches Concentrate/ water connection dia.,inches 5-micron RO prefilter diameter x height, inches (mm) Minimum RO pump flow rate, gpd (L/d) * RO pump motor power, hp (kw) Qty. of RO membranes RO membrane diameter x height, inches (mm) 480/, /, /, /, /, /, /, /, 5 480/, /, /, /, /, /, 10 20/24/55 (508/610/197) 275 (125) 20/24/55 (508/610/197) 00 (16) 20/2/55 (508/81/197) 25 (147) 20/2/55 (508/81/197) 50 (159) 20/2/55 (508/81/197) 400 (181) 20/40/55 20/46/55 (508/1016/197) (508/1168/197) 475 (215) /4 /4 /4 /4 /4 /4 /4 1/2 1/2 1/2 1/2 1/2 /4 /4 1/2 1/2 1/2 1/2 1/2 1/2 1/ (64 x 508) 750 (289) 1 (0.75) (64 x 508) 1500 (5678) 1 (0.75) (64 x 508) 000 (11,56) (2.2) (64 x 508) 5250 (19,87) (2.2) (64 x 508) 7500 (28,90) (2.2) 10,500 (9,746) (2.2) 575 (261) 16,500 (62,459) * RO systems sized for 50 ºF (10 ºC) incoming water temperature ** 40 psi (280 kpa) minimum supply water pressure (2.2) Preliminary HIGH-PRESSURE ATOMIZING SYSTEM 9

10 Evaporation efficiency EVAPORATION EFFICIENCY IN AIR HANDLERS AND DUCTS Once water is dispersed into a moving airstream, many factors affect evaporation efficiency, or how much of that water will evaporate. Factors affecting evaporation efficiency are included in the following example. The following are known: Humidification load = 85 lbs/hr (175 kg/h) Available evaporation distance = 4 ft (1.2 m) Leaving air temperature = 55 F (12.8 C) Air velocity = 500 fpm (2.54 m/s) Entering air grains of moisture per pound of dry air = 15 (Entering air grams of moisture per kilogram of dry air = 2.1) Entering air dew point temperature = 20 F ( 6.7 C) Leaving air RH = 55% AHU INSTALLATION EXAMPLE 1' (0. m) minimum 2' to 4'* (0.6 to 1.2 m) Airflow Dispersion manifold Heating coil Final evaporation media Cooling coil Floor pitched to drain * Evaporation efficiency increases as distance between dispersion manifold and final evaporation media increases. Drain 10 HIGH-PRESSURE ATOMIZING SYSTEM Preliminary 02071

11 Evaporation efficiency USING THE EVAPORATION EFFICIENCY CHART This evaporation efficiency chart below is based on 4-ft (1.2 m) evaporation distance, 55 F (12.8 C) leaving air temperature, and 500 fpm (2.54 m/s) air velocity. Using these values, the chart identifies: Required entering air temperature = 68 F (20 C) Evaporation efficiency = 70% From these values, required system capacity can be calculated: To accurately size a High-Pressure Atomizing System, first define all the values, as shown in this section. This will ensure a system that maximizes efficiency and delivers consistent output. Load = Required system capacity Evaporation efficiency 85 lbs/hr 0.7 = 550 lbs/hr or kg/h 0.7 = kg/h EVAPORATION EFFICIENCY CHART Required entering air temperature (dashed lines) 85 ºF (29.4 ºC) 80 ºF (26.7 ºC) 75 ºF (2.9 ºC) 70 ºF (21.1 ºC) 65 ºF (18. ºC) 60 ºF (15.6 ºC) 57 ºF (1.9 ºC) Leaving air RH % Evaporation efficiency % Entering grains of moisture per pound of dry air (grains/#) Entering grams of moisture per kg of dry air (g/kg) Preliminary HIGH-PRESSURE ATOMIZING SYSTEM 11

DriSteem Corporation A subsidiary of Research Products Corporation An ISO 9001:2000 certified company U.S. Headquarters: 14949 Technology Drive Eden Prairie, MN 5544 800-28-4447 or 952-949-2415

12 DriSteem Corporation A subsidiary of Research Products Corporation An ISO 9001:2000 certified company U.S. Headquarters: Technology Drive Eden Prairie, MN or (fax) European office: Marc Briers Grote Hellekensstraat 54 b B-520 Zonhoven Belgium (voice) (fax) marc.briers@dristeem.com Continuous product improvement is a policy of DriSteem Corporation; therefore, product features and specifications are subject to change without notice. DriSteem, and Vapor-logic are registered trademarks of DriSteem Corporation and are filed for trademark registration in Canada and the European community. Product and corporate names used in this document may be trademarks or registered trademarks. They are used for explanation only without intent to infringe. 201 DriSteem Corporation Form No. HPAS-Catalog-021 Preliminary EXPECT QUALITY FROM THE INDUSTRY LEADER For more than 45 years, DriSteem has been leading the industry with creative and reliable humidification solutions. Our focus on quality is evident in the construction of the DriSteem High-Pressure Atomizing System, which features cleanable, stainless steel construction. DriSteem leads the industry with a Two-year Limited Warranty and optional extended warranty. For more information sales@dristeem.com For the most recent product information visit our website: Your DriSteem Representative is:

EVAPORATIVE COOLING AND HUMIDIFICATION. High-Pressure System Wetted Media System

EVAPORATIVE COOLING AND HUMIDIFICATION High-Pressure System Wetted Media System Energy efficient Provides both direct and indirect evaporative cooling Multiple zone capabilities in air handlers, ducts,