Model 1750A/1770A Dehumidifier
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 dehumidifier.
3. Do not use solvents or cleaners on or near the circuit board. Chemicals can damage circuit board components.
4. Wait 24 hours before running if the unit has not been shipped or stored in the upright position.
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.
3. Sharp edges may cause serious injury from cuts. Use care when cutting plenum openings and handling ductwork.
4. Dropping may cause personal injury or equipment damage. Use a hand cart, dolly, or two people to transport dehumidifier.
SAFETY INSTRUCTIONS
TABLE OF CONTENTS
Safety Instructions....................................... 1
Overview ............................................... 2
Specifications........................................... 3
Unpacking and Contents ................................. 3
Location Considerations.................................. 4
Mechanical Installation
Duct Collars & Backflow Damper ...........................5
General Ductwork Recommendations ....................... 5
Drain.................................................. 6
Float Switch............................................ 6
Installation Configurations
(Duct Layout, Wiring & Dip Switch Settings)
Single Zone – Ducted to HVAC System . . . . . . . . . . . . . . . . . . . . . . 7
Single Zone – Not Ducted to HVAC System .................. 9
Two Zone – Primary and Secondary Zoned .................. 11
Ventilation or Air Cycling................................14
Model 76 Control
External Control........................................ 19
Remote Control for Crawl Spaces ......................... 20
Model 8910 Home Comfort Control
™
or Third-Party Control ... 21
System Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Troubleshooting ........................................ 23
Service Parts........................................... 25
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