Aprilaire 1870 Installation Instructions Manual
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Aprilaire 1870 Installation Instructions Manual

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SAFETY INSTRUCTIONS
1. 120 Volts may cause serious injury from electric shock. Disconnect electrical power before starting installation or servicing.
Leave power disconnected until installation/service is completed.
2. Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling duct work.
3. Dropping may cause personal injury or equipment damage. Handle with care and follow installation instructions.
1. Read all instructions before beginning installation.
2. Improper installation may cause property damage or injury. Installation, service, and maintenance must be performed by a
qualified service technician.
3. Do not use in pool applications. Pool chemicals can damage the dehumidifier.
4. Do not use solvents or cleaners on or near the circuit board. Chemicals can damage circuit board components.
5. Wait 24 hours before running the unit if it was not shipped or stored in the upright position
6. Do not use dehumidification to prevent window condensation in the winter. To address window condensation, use ventilation
to lower indoor humidity in the winter.
WARNING
CAUTION
READ AND SAVE THESE INSTRUCTIONS
Model 1870 & 1870W Dehumidifier
Installation Instructions
1

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Summary of Contents for Aprilaire 1870

  • Page 1 Model 1870 & 1870W Dehumidifier Installation Instructions SAFETY INSTRUCTIONS WARNING 1. 120 Volts may cause serious injury from electric shock. Disconnect electrical power before starting installation or servicing. Leave power disconnected until installation/service is completed. 2. Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling duct work.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Specifications .

  • Page 3: Specifications

    SPECIFICATIONS Model 1870 & 1870W Weight 113 lbs . Capacity 130 pints per day @ 310 CFM AHAM DH-1-2008 80°F, 60% RH Conditions Power 8 .3A operating current 115 VAC, Single Phase, 60Hz Dehumidifier Inlet Air Conditions Dehumidification: 50°F – 104°F, 40°F dew point minimum Ventilation: 40°F –...

  • Page 4: Duct Collars

    SET UP DEHUMIDIFIER FOR INSTALLATION (CONTINUED) DUCT COLLARS STANDARD BASEMENT AND ATTIC INSTALLATIONS FIGURE 2 – Fully Ducted Installations (FULLY DUCTED) • Use the screws in the parts bag to attach the duct collars to OUTLET COVER the inlet and outlet of the dehumidifier . The outlet collar has a OUTLET DUCT backflow damper .

  • Page 5: Control Location

    SET UP DEHUMIDIFIER FOR INSTALLATION (CONTINUED) CONTROL LOCATION The on-board control can be located on the top of the dehumidifier or can be relocated to the front of the FIGURE 4 – Control Location dehumidifier if the control can not be seen/accessed in the top orientation .

  • Page 6: 1870W Hard Wiring

    1870W HARD WIRING WARNING CAUTION ELECTRICAL SHOCK HAZARD: 115-volts may cause serious injury or death from Use of an undersized circuit electrical shock. Disconnect and tag electrical service before starting installation or breaker may cause property field-service. Leave electrical service disconnected until installation or field-service damage and/or the need for is complete.

  • Page 7: Wiring Instructions

    1870W HARD WIRING (CONTINUED) WIRING INSTRUCTIONS 1 . Disconnect electrical service at the main fuse or circuit breaker box . FIGURE 5 – Electrical Service Box Location 2 . Install any code required electrical disconnects to the line service . SIDE PANEL 3 .

  • Page 8: Location Considerations

    LOCATION CONSIDERATIONS • Allow sufficient clearance for filter removal and FIGURE 7 – Filter Access Clearance to prevent airflow obstruction • Electrical service access will require the removal ELECTRICAL SERVICE of the side panel shown . Allow sufficient space ACCESS THIS SIDE for service on this side of the unit .

  • Page 9: Drain Installation

    DRAIN INSTALLATION The drain outlet on the dehumidifier can be hard piped using 3/4” nominal drain tubing or the provided fitting and 1/2” clear PVC tubing can be used to drain the dehumidifier . Always maintain a constant downward slope from the dehumidifier to the drain and do not allow soft tubing to curl up which may result in air lock .

  • Page 10: Ducting To Hvac System - Basement And Attic Installations

    DUCTING TO HVAC SYSTEM – BASEMENT AND ATTIC INSTALLATIONS The Preferred Installation is to duct the dehumidifier to pull air from and return dehumidified air to the HVAC return duct . This installation will ensure warm, dehumidified air is thoroughly mixed with the HVAC system air before being discharged into the living space . Alternatively, the dehumidifier can be ducted to discharge to the supply duct, but the external static pressure of the HVAC system must not exceed 0 .6”w .c .

  • Page 11: Ducting For Stand Alone Installations Or Non-Ducted Installations

    DUCTING FOR STAND ALONE INSTALLATIONS OR NON-DUCTED INSTALLATIONS In this installation the dehumidifier is not ducted to the HVAC system FIGURE 14 – Stand Alone Ducted and is used to dehumidify a specific area . This installation is typically in basements or crawl spaces . DEHUMIDIFIED AIR IS SUPPLIED TO DUCTED SPACE Optional Components 10”...

  • Page 12: Ducting For Two Zone Installations

    10” Ductwork and Fittings Grilles with 10” Duct Collars Drain Line 2 – Aprilaire Model 6510, 10” Normally Closed Damper 2 – Aprilaire Model 6610, 10” Normally Open Damper 24 VAC Transformer (40VA min .) for Dampers NOTE: 5442 Basement Kit includes 2 – 6510 Dampers, 2 –...

  • Page 13: Model 76 - External Control Or Crawl Space/Sealed Attic Control And Wiring

    NO/NC switch on the dehumidifier control (see Figure 17) to correspond with the control being used . The Aprilaire Model 8620 Thermostat or Model 8910 Home Comfort Control are recommended alternate controls and both use normally open contacts .

  • Page 14: Wiring The Dehumidifier To The Hvac System And Zone Dampers

    WIRING THE DEHUMIDIFIER TO THE HVAC SYSTEM AND ZONE DAMPERS NOTE: Use 18-22 AWG wire for wiring to HVAC system and zone FIGURE 19 – Wiring to HVAC System dampers . Pull off the wiring access cover near the dehumidifier control to access the wiring terminals .

  • Page 15: System Set Up And Checkout

    SYSTEM SET-UP & CHECKOUT If dehumidifier installation does not include ventilation or zoning and Ventilation will not be wired to an external control, remote control or the HVAC system, proceed to Installer Test Mode section on page 17 . If not using the dehumidifier to bring in outdoor air, press MODE 1.
  • Page 16 SYSTEM SET-UP & CHECKOUT (CONTINUED) Zone DEH W/AC If installing the dehumidifier in To allow dehumidification during a single zone application, select active air conditioning, select DISABLED and press MODE to go ENABLED and press MODE . to the EXTERNAL control screen selections .

  • Page 17: Installer Test Mode

    SYSTEM SET-UP & CHECKOUT (CONTINUED) Installer Test Mode If everything is properly wired, the dehumidifier and all of the wired components will turn on and off during Installer Test Mode to demonstrate that all are properly operating . Installer Test Mode lasts for four (4) minutes . If the ON/OFF button is pressed during test mode, the dehumidifier will exit Installer Test Mode and return to the OFF screen .

  • Page 18: Start Up And Sequence Of Operation

    START UP AND SEQUENCE OF OPERATION SINGLE ZONE WHOLE HOUSE OR STAND ALONE USING CRAWL SPACE OR SEALED ATTIC (REMOTE) CONTROL THE DEHUMIDIFIER CONTROL USING MODEL 76 1 . Press the ON/OFF button to turn the dehumidifier control ON . The 1 .

  • Page 19: Ventilation

    Model 76 has been installed in a Remote Control application, and is not recommended when using primary and secondary zoned dehumidification . Required Components Optional Components Aprilaire Model 6506, Normally Closed Damper 8052 Outdoor Temperature Sensor 6” Insulated Duct for Fresh Air Intake Duct 24 VAC Transformer (10VA min .) for Ventilation Damper...

  • Page 20: Vent Auto & Vent-Timed

    VENTILATION (CONTINUED) VENT-AUTO & VENT-TIMED The dehumidifier can ventilate in four modes. Vent-Timed: Ventilation occurs based only on time setting; no temperature restrictions . Vent-Auto-B: Ventilation prevented when outdoor temperature is below 0°F and above 100°F . Between 0°F – 20°F ventilation is only allowed during a HVAC heat call .

  • Page 21: Determine Ventilation Requirements

    VENTILATION (CONTINUED) DETERMINE VENTILATION REQUIREMENTS CALCULATING AIRFLOW REQUIREMENT TABLE 1 – CFM Required 1 . The MINIMUM ventilation requirement is calculated using ASHRAE Number of Bedrooms House Sq. Ft. 62 .2-2010 . ASHRAE Airflow in CFM = [House Area in Sq . Ft . x 0 .01] + 1000 [(Number of Bedrooms +1) x 7 .5] NOTE: Use ‘Number of Bedrooms + 1’...

  • Page 22: Installer Settings

    VENTILATION (CONTINUED) TABLE 3 – Cycle Time Setting (minutes) for Airflow Delivered vs. Airflow Required for 1 hour Cycle CFM Required CFM Delivered INSTALLER SETTINGS With the dehumidifier power Press the UP or DOWN to toggle switch on, press the ON/OFF between VENT TIMED, VENT button to turn the dehumidifier AUTO-B, VENT AUTO-C and...

  • Page 23: Sequence Of Operation

    VENTILATION (CONTINUED) SEQUENCE OF OPERATION When wired as shown in Figure 23, the ventilation damper will open whenever there is an HVAC heating (W), cooling (Y) or fan (Gs) call, allowing fresh air to be brought in when the HVAC blower is running (see VENTILATION WITH AN EXTERNAL CONTROL section below for exceptions) .

  • Page 24: Troubleshooting

    TROUBLESHOOTING Technical Support is available Monday through Friday, 7:00 a .m . to 5:00 p .m . CST, at (800) 334-6011 . Use the guides on the following pages to identify and correct system faults . Contact Technical Support before replacing the unit or any components and for additional troubleshooting . DIAGNOSTIC CODES When an error occurs, the Diagnostic Code along with SERVICE REQUIRED will be displayed on the control screen .
  • Page 25 TROUBLESHOOTING (CONTINUED) TABLE 4 – Diagnostic Codes (continued) Diagnostic Code Failure Mode Action Reset Float Switch Open 1 . Empty the condensate pan . Self-Correcting 2 . Check the float switch connection at the control board . 3 . If not using a float switch, verify jumper is between float switch terminals on dehumidifier control board .

  • Page 26: Table 5 – Troubleshooting Guide

    TROUBLESHOOTING (CONTINUED) TABLE 5 – Troubleshooting Guide Symptom Possible Reason Troubleshooting Procedure Dehumidifier does not No power to unit . • Check that the dehumidifier is plugged in . turn on/run . • Check that the power switch is turned ON . •...

  • Page 27: Service Parts

    SERVICE PARTS 90-2031 Part Description Part No. Part Description Part No. Filter, 14” x 19” x 1” EZK 5569 Fan, 130pt Deh, with 10MFD Capacitor 5572 Internal Control Board, Deh 5444 Wire Harness, Power, Deh 5454 User Interface Assembly, Deh 5445 Sensor, Low Temperature, Deh 5455...
  • Page 28 P .O . Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357 • www.aprilairepartners.com 10011020 7 .15 Printed in U .S .A . B2206477B © 2015 Aprilaire – A division of Research Products Corporation...

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1870w

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