Aprilaire 1720 Specifications

Light Commercial Humidity Control

Humidification• In order to keep the space comfortable and the proper amount of moisture in the air, humidity must be introduced.• Using dedicated hum

Light Commercial Humidity Control

Why Add Humidity Commercially?1. Humidification protects materials and inventory -Essential for moisture-retaining materials such as wood, paper, fab

Why Add Humidity Commercially?2. Humidification eliminates static electricity -Disrupts efficiency of high speed production processes and operations

Why Add Humidity Commercially?3. Maintains workplace comfort -Low humidity causes dry skin and itching.-Dry nose and throat can increase susceptibilit

Aprilaire Steam HumidifiersModels 1150, 1160, and 1180

Aprilaire Steam Humidifiers• Model 1150– Steam output capacity of 12 lbs/hr• Model 1160– Steam output capacity of 24 lbs/hr• Model 1180 – Steam outpu

Steam Humidifier Specifications24.06” W x 18.93” H x 15.61” D24.06” W x 18.93” H x 9.99” D24.06” W x 18.93” H x 9.99” DUnit Dimensions3.88"W x 5.

Internal ComponentsWater Level Control ProbeBuilt-in P TrapRemovable Steam Chamber304 Stainless Steel ConstructionDisplay PanelInternal Control BoardI

Component Descriptions• Water Level Control Probe– Maintains the proper amount of water in the steam chamber.• 304 Stainless Steel Construction– Ensur

Component Descriptions• Immersion Heaters– Designed for long life and capable of shedding mineral build-up, minimizing service calls.• Display Panel–

How Big is Light Commercial?• In 2004: An estimated 1,915,000 Constant Volume RTU’s under 25 tons were sold!• 2003 Commercial Building Energy Consumpt

Aprilaire Steam Humidifier Operation• Operation Process-After initial startup, fill valve will open and steam chamber will fill to proper level-Heatin

Aprilaire Steam Humidifier Operation• Build-up Removal -Boiling water in steam chamber causes minerals and impurities in the water to “drop out” which

Model 1150 Control• On-Off Control-Simplest control option, unit turns completely on and off-A differential is set between on and off switch points in

Model 1160 and 1180 Control• Modulating Control -Demand signal is sent from a modulating humidistat to the humidifier, which then produces a proportio

Key Aprilaire Unit Features• Relative Humidity (RH) Control~Model 1150 controller maintains RH within 5% to 7% of set point~Model 1160 and 1180 contro

Display PanelSteam Fill DrainOn/Offindicator lighton/off switchThe steam humidifier display panel shows operating status and troubleshooting informati

Key Aprilaire Unit Features• Indicator Lights, Status, and Description(Sample diagnostics; for all diagnostics, see I.O. & M. Manuals)~All indicat

Key Aprilaire Unit Features• Automatic Water Level Control and Safety Shut-Down~an electronic water level probe sends a signal to the controller to ei

Three Level Water Control ProbeFill valve closesFill valve opensLow-water cutoff¼ Actions performed by humidifier when water level in steam chamber re

Key Aprilaire Unit Features• What is really in a complete kit?-Unit-Steam dispersion tube-10’ (3m) length hose-AA Steam Humidifier Controller-Air-flow

How many buildings does this mean to me?Buildings by Floorspace0 250 500 750 1,000 1,250 1,500 1,750 2,000 2,250 2,500 2,7501,001 to 5,0005,001 to 10,

“Complete Kit”UnitSteam dispersion tube10’ (3m) hoseAprilaire Steam Humidifier ControllerAirflow detection device

Aprilaire Included Controls• Steam Humidifier Controller (SHC)-Return duct mounted-Can be set in either the manual mode for specific RH set point cont

Aprilaire Optional Controls• High Limit Switch -Highly recommended optional device-Supply duct mounted-Mounted at a minimum of 3’ (1m) downstream of t

Sizing HumidificationTOOLS TO DO THE JOBHumidification Calculation Work SheetHumidification Calculation Software

Calculation Work Sheet

Humidification Calc Software

Download it free!

Benefits for the Contractor• Aprilaire enables you to provide your customers with the BEST in humidification technology for light commercial projects!

Benefits for the Contractor• Flexibility and ease of both installation and maintenance save you time and money!-Built in “P” Trap reduces required pip

Benefits for the Contractor• Aprilaire is your best choice for all of your humidification needs -New opportunity to quote these units directly, for al

What types of applications made up this total?0 100 200 300 400 500 600 700 800 900Public Order and SafetyOtherHealth CareLodgingVacantFood SalesPubli

Benefits for the ContractorSuitable for all LC applications. Use of softened water extends service life of unit up to three years Ability to operate

Benefits for the Building Owner• Steam humidifiers save you money by protecting equipment, processes, and inventory -Reduces or eliminates maintenance

Why Aprilaire Steam Humidifiers?• Aprilaire stands out amongst the competition!!-Complete humidification system in one box-Easily removable and cleana

We’ve talked about keeping humidity above a minimum level, but what about making sure the humidity doesn’t get too high!

Maximum Humidity Levels• Remember…– Humidity above 50% can cause condensation on and damage metal products.– Humidity above 50% can cause swelling and

Dangers of High Indoor Humidity• Mold– Can cause sinus infections, headaches, eye and throat irritations, fatigue, loss of memory. Children are espec

The Science Behind the Product• Before we can talk about the solution, we need to understand the science!– The Refrigeration Process• Determines how t

The Refrigeration Process

What Happens in the Dehumidifier?95°F DB68°F WB53°F DP25%Rh75°F DB68°F WB65°F DP70%Rh

Basics of Psychrometrics• What are Psychrometrics?– “Psychrometrics deals with thermodynamic properties of moist air and uses these properties to anal

Opportunities• LC humidity control has been estimated at over $23,000,000 and is a growing market.• Humidification– The LC humidification market is es

The Psych Chart• The psychrometric chart is used to graphically show what is going on in the air as it relates to temperature and moisture. • Why we u

Key Elements of Psychrometrics• Dry bulb temperature - The temperature of the air as measured by an ordinary thermometer.• Wet bulb temperature – Evap

30Dry-Bulb Temperature (°F)Grains Of Moisture Per Pound Of Dry Air25 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 11020 0406080100120140160180200220

10535(F) 4045 50 55 60 65 70 75 80 85 90 95 1002040608010012014016018020035(F)4045505560657075808510%20%30%40%50%60%70%80%90%75°F Dry Bulb67°FWet Bulb

10535(F) 4045 50 55 60 65 70 75 80 85 90 95 1002040608010012014016018020035(F)4045505560657075808510%20%30%40%50%60%70%80%90%75°F Dry Bulb67°FWet Bulb

What Happens to the Air When Cooled?Return At Coil Supply• Dry Bulb 75°F 55°F 72°F• Dew Point 64°F 55°F 55°F• RH 70% 100% 58% • Wet Bulb 67°F 5

Psychrometrics Summary• As the temperature in a space increases, the air can hold more moisture, so as the absolute humidity in the space remains cons

Key Industry Terms• Key Industry Terms– Sensible Heat/Energy – Heat energy that causes a rise or fall in the temperature. (Thermostat)– Latent Heat/En

What does this mean to you?• A building’s cooling load is affected by several factors– Solar gain– Infiltration– Internal loads– Occupancy– Ventilatio

Aprilaire DehumidifiersModel 1700Model 1720-Coming Soon-

Humidity Control• In many applications, desired humidity is expressed in a range. Total humidity control is the key.• It is critical to keep the rela

Dehumidifier Product Specifications100 lbs92 lbs.WeightSimilar to 170048 dBA Ducted; 54 dBA Non-DuctedSound LevelR-22R-22Refrigerant Type25% RH25% RHD

Internal Components

Component Descriptions• Outlet/Inlet– Designed for 8” insulated, flexible duct or can be ducted with standard 8” round or spiral duct.• Blower Assembl

Component Descriptions• Filter– 1 “ Washable, MERV 8 rating filter.• Filter Access Door/Dual Service Access- Allows the filter to removed or the unit

Dehumidifier Control Terminology• Sampling: Dehumidifier blower energizes its internal blower to measure incoming air dewpoint to determine if it is a

Sequence of Operations – Basic Install1. Unit samples for 2 minutes at the end of the cycle period using it’s internal blower.2. If measured dewpoint

Sequence of Operations – Basic Install with HVAC Blower Control1. Sequence of Operation of the dehumidifier is the same as the basic.2. With Blower co

Sequence of Operations – Basic Install with HVAC Fan Cycling1. Sequence of Operation of the dehumidifier is the same as the basic+Blower Control.2. Wi

Sequence of Operations – Basic Install with Outside Air Ventilation1. Sequence of Operation of the dehumidifier is the same as the basic+Fan Cycling.2

The Controls• Equipment Connection Terminals• Float Switch Terminals• ODT Sensor Terminals• Vent/DEH Damper Terminals• Model 70 Control Terminals• Sys

The Need• Higher outdoor air requirements in ASHRAE 62-2 have increased the amount of ventilation air, making the need for humidity control more criti

Cycle Period• Sample period for the dehumidifier• If cycling is enabled, sets the interval for fan cycling and/or ventilation

Cycle Time• If set to off, no fan cycling or ventilation will occur• Sets the cycle and/or ventilation time per cycling period

System Set Up• Local or remote control• Active or passive HVAC blower• Building or localized control• Automatic or timed ventilation

Typical LC Set-Up• System Set-up = – Model 70, can be either– HVAC blower in the “OFF” position– Set in “whole house” mode– Set ventilation in the “au

Unit Wiring-Basic Install• No wiring required!• Plug in and set board configuration.

Unit Wiring with HVAC Blower Control

Unit Control• On-Board Control– Unit comes complete with fully adjustable on-board controls.– Inlet sensor monitors and measures temperature and RH to

Automatic Control• Automatically turns on dehumidifier fan in a preset timeframe to sample temperature and dew point• Energizes compressor if room RH

Setting Automatic Control– What RH in occupied space will be at a given knob setting (% RH based on control knob setting and indoor temperature)Contro

Local Control• Has its own dewpoint sensor that will override the main control board sensor when the occupied space control is connected• Can control

The Need• Condensation will occur if the surface temperature is at or lower than the dew-point. It can also occur if the RH% is above 50%. This cond

Installation• Service Flexibility• Unit can be installed in a variety of applications

Unit Service Access

Filter Access Doors

Installation Flexibility• RTU with Supply and Return Plenums• RTU with Wild Return and Ducted Supply• Re-circulating Mode Above the Ceiling• Re-circul

RTU with Supply and Return Plenums

RTU with Wild Return and Ducted Supply

Re-circulating Mode Above the Ceiling

Re-circulating Mode Through the Wall

Why Aprilaire Dehumidifiers?• Aprilaire dehumidifiers offer you the most intelligent control available• Standard on-board controls and optional space

Coming SoonAprilaire Dehumidification Software!

Application Examples• Dry Cleaners• Tanning Salons• Print Shops• Restaurants• Musical Instrument Stores• Furniture Stores• Medical Clinics• Assisted L

What it Looks LikeAPRILAIRE DEHUMIDIFICATION REPORTIndoor Conditions at Max Latent LoadDry Bulb Temperature 72 °FRelative humidity 75 % RHDesired Cond

Why Aprilaire Dehumidifiers?• Dedicated dehumidifiers offer an excellent solution for retro-fit applications • Add-on units offer flexibility:– Instal

Why not let the A/C take care of Humidity Control?• RH factors are over-ridden by temperature– Doesn’t operate during shoulder periods– Will stop remo

Why Supplemental Dehumidifiers? Why Not Hot Gas Re-heat RTU’s?• Roof-top units that feature re-heat or dehumidification often cannot effectively cool

Benefits to the Contractor• Aprilaire Dehumidifiers are The Best Solution to meet your customers humidity control needs– All buildings need to ventila

Benefits to the Contractor• Aprilaire Dehumidifiers are designed with the flexibility to meet all of your applications– By being a “stand-alone” or “a

Benefits to the Contractor• Aprilaire Dehumidifiers provide humidity control, leaving the Air Conditioning to do the cooling– Air conditioning can pro

Benefits for the Building Owner• Aprilaire Dehumidifiers Save Money by protecting critical processes, equipment, raw materials, & inventory and in

Real Life ExampleIn November 2004, the Detroit Institute of Arts built a special warehouse designed only to store the paintings prior to going to exhi

8570 Thermostat Controlling the Carrier Rooftop and Monitoring the RH in the Occupied SpaceModel 1160 Steam Humidifier AndModel 1700 Dehumidifier