Installation Manual

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Model 76 Dehumidifier Control

Installation Instructions

READ AND SAVE THESE INSTRUCTIONS

CAUTION

1. Read all instructions before beginning installation.

2. Do not use in pool applications. Pool chemicals can damage the control.

3. Do not use solvents or cleaners on or near the display and circuit board.

Chemicals can damage components.

WARNING

1. Improper installation may cause property damage or injury. Installation, service,

and maintenance must be performed by a qualiﬁed service technician.

2. 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. This control is not a 120 Volt (line voltage)

device.

SAFETY INSTRUCTIONS

The Model 76 is for use with any dehumidifier as an EXTERNAL CONTROL,

including Aprilaire Models 1710A, 1730A, 1750A, 1770A, 1830, 1850 & 1870.

The Model 76 can also be used as a communicating REMOTE CONTROL

with Aprilaire Models 1710A, 1750A, 1770A, 1830, 1850 & 1870.

(See OVERVIEW on page 3 for details.)

Summary of content (13 pages)

PAGE 1
Model 76 Dehumidifier Control Installation Instructions READ AND SAVE THESE INSTRUCTIONS The Model 76 is for use with any dehumidifier as an EXTERNAL CONTROL, including Aprilaire Models 1710A, 1730A, 1750A, 1770A, 1830, 1850 & 1870. The Model 76 can also be used as a communicating REMOTE CONTROL with Aprilaire Models 1710A, 1750A, 1770A, 1830, 1850 & 1870. (See OVERVIEW on page 3 for details.) Safety Instructions WARNING 1. Improper installation may cause property damage or injury.
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Table of Contents Safety Instructions . . . . . . . . . . . . . . . . . . 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Specifications . . . . . . . . . . . . . . . . . . . . . . 3 Location Recommendations . . . . . . . . . . 4 Installation Mount Control . . . . . . . . . . . . . . . . . . . . . 5 Replacing a 1730A Manual Dehumidistat . . . . . . . . . . . . . . 6 Wiring to 1730A . . . . . . . .
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LOCATION RECOMMENDATIONS INSTALLATION As a REMOTE CONTROL, the Model 76 can be mounted wherever is convenient for the homeowner. MOUNT CONTROL Follow the recommendations below when installing the Model 76 as an EXTERNAL CONTROL. MOUNT CONTROL • In an area the homeowner wants to monitor and control moisture levels. • On an interior wall. If replacing a control mounted in the living space, see Control Mounted in Living Space on page 6.
PAGE 4
Required Components If the MANUAL control is mounted on A 1730A dehumidifier: 18 – 24 gauge wire (field supplied) – 4 wires required, run new cable as needed. (2) #8 x 1-1/2” mounting screws (supplied) (2) Anchors (supplied) NOTE: The Model 76 is installed in the living space and not on the dehumidifier. See LOCATION RECOMMENDATIONS on page 4. 1. Level the backing plate on the wall and mark the mounting holes and wire access location on the wall. 2.
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MODEL 76 EXTERNAL CONTROL TO 1710A /1750A /1770A WIRING 1. Disconnect power to the dehumidifier and HVAC system. STEP 2 – Supply 24VAC To The Model 76 Control 2. Remove the control door on the dehumidifier inlet panel. The Model 76 control requires 24VAC when installed as an EXTERNAL CONTROL. Pulling power from the HVAC system is the recommended method. 4. Connect the other wire from the DH terminal on the Model 76 to the Rf terminal on the control board. 5.
PAGE 6
MODEL 76 EXTERNAL CONTROL TO 1830/1850/1870 1. Disconnect power to the dehumidifier and HVAC system. 2. Remove the wiring access cover next to the control on the dehumidifier. See Figure 10. 3. Wire the Model 76 to the dehumidifier as shown in Figure 11. Figure 10 – Wiring Access Cover Location CONTROL 5. Snap the wiring access cover back into place, power up the dehumidifier and use the ON/OFF button to turn the unit OFF (if ON). WIRING ACCESS COVER CONTROL PANEL COVER 90-1854 6.
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MODEL 76 REMOTE CONTROL TO 1710A /1750A /1770A MODEL 76 REMOTE CONTROL TO 1830/1850/1870 1. Disconnect power to the dehumidifier and HVAC system. 1. Disconnect power to the dehumidifier and HVAC system. 2. Remove the control door on the dehumidifier inlet panel. 2. Remove the wiring access cover next to the control on the dehumidifier. See Figure 14. 3. Connect one wire from the A terminal on the Model 76 to the A terminal on the control board. 4.
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4. Snap the wiring access cover back into place, power up the dehumidifier and use the ON/OFF button to turn the unit OFF (if ON). SYSTEM CHECKOUT POWER UP 1. Check all wiring. 2. Plug in dehumidifier and restore power to the HVAC system. 90-1854 5. Press and hold the MODE button for 3 seconds to enter the Installer Set Up menu – “REMOTE DISABLED” will appear on the display when Installer Set Up is entered. 6. Press the UP or DOWN button to change to “REMOTE ENABLED”. 3.
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Figure 17 – Remote Control TEST MODE Model 76 Control 1. Press and hold the ON button for 5 seconds to enter Test Mode. a. Verify the measured humidity is displayed on the Model 76 screen. Dryness Level Control must be ON to adjust. b. Verify dehumidifier turns on, and ON blinks on the Model 76 screen. is displayed on the Model 76 screen when wired as a REMOTE CONTROL. * 2. After 5 minutes or after pressing the OFF button, the control will enter Off mode. c. Verify the a.
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TURNING ON AND SETTING THE CONTROL SEQUENCE OF OPERATION External Control External Control 1. Press the ON button. Normal Mode 2. Use the buttons to set the control at 59%. I ncreasing the humidity setting will decrease dehumidifier run time, allowing for higher humidity levels. Decreasing the humidity setting will increase dehumidifier run time, allowing for lower humidity levels. TABLE 1 – %RH (+/-5%) Based on Dryness Remote Control Level Setting & Indoor Temperature 1. Press the ON button.
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TABLE 2 – Error Codes TROUBLESHOOTING Technical Support is available Monday through Friday, 7:00 a.m. to 5:00 p.m. CST, at (800) 334-6011. Use the guide on the following page to help find and correct system faults. Contact Technical Support before replacing the control or for additional troubleshooting. ERROR CODES Error Code Failure Mode Action E1 Internal Humidity or Temperature Sensor Open or Shorted 1. Check the connection between the sensor board and control board. 2.
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TABLE 2 – Error Codes (continued) Error Code E5 E6 E7 E8 E9 TABLE 3 – Troubleshooting Guide Failure Mode Action High Temperature Thermistor Failure 1. Check the high temperature sensor connection at the power board. Terminal should be fully seated on the power board pins. 2. Remove the side access panel and verify the sensor is not damaged and connected to the refrigeration line coming from the compressor. 3.
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P.O. Box 1467 • Madison, WI 53701-1467 • Phone: 800/334-6011 • Fax: 608/257-4357 www.aprilairepartners.com 10009850 11.13 B2205738B Printed in U.S.A.