Honeywell HE120A Owner's Manual - Page 2
Fig. 2. Humidifier components.
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COVER BEARING END OF DRUM SHAFT DRUM ASSEMBLY 12. Cut an opening for the 6 in. (152 mm) collar in the selected by-pass location. NOTE: Be sure to install a duct damper for summer shutoff if there is air conditioning. 13. Install the 6 in. (152 mm) collar. 14. Use sheet metal screws to connect the by-pass tubing from the collar to the humidifier. 15. Seal the connections with duct tape. 16. Insert the drain fitting in the bottom of the humidifier housing. NOTE: Be sure the overflow tube is positioned toward the front, on the same side as the by-pass tubing. The tubing should not touch hot surfaces or sharp edges. HUMIDIFIER HOUSING WATER PAN WATER VALVE OPENING M12252 Fig. 2. Humidifier components. 5. Set the cabinet aside and drill the five 7/64 in. (3 mm) mounting holes. 6. Start the three 3/4 in. (19 mm) sheet metal screws in the top holes. 7. Place the humidifier housing over the screws, level the housing and tighten the three screws. 8. Use two 1/2 in. (13 mm) screws to secure the humidifier housing at the bottom. 9. On the inside of the humidifier housing where the by-pass tube connects, snap the bearing bracket in place with the U shape of the bracket pointing up. 10. Snap the motor plate into place on the opposite side of the humidifier housing. 17. Place the water pan in the humidifier housing so the overflow tube is above the previously installed drain fitting. 18. Attach a 3/8 in. (10 mm) I.D. tubing to the drain fitting and route continuously downward to a suitable drain, or catch basin. 19. Screw the float onto the float valve assembly. 20. Attach the float valve to the humidifier housing on the same side as the motor. 21. Insert the valve hole plug in the double D hole on the oppo- site side of the valve. 22. Assemble the drum and humidifier pad. See Fig. 3. 23. Insert the drum assembly into the motor coupling end and snap into the bearing end. 24. Install the saddle valve (using the instructions on the saddle valve bag) on the nearest cold water pipe. 25. Connect the copper tubing and route to the humidifier. 26. Connect the copper tubing to the humidifier valve and finger tighten. 27. Use a 1/2 in. open end or adjustable wrench to tighten the compression fitting securely. 28. Turn on the water at the saddle valve and adjust the water level to 1-3/8 in. (35 mm) deep. NOTE: Be sure the motor coupling is positioned toward the top. 11. Place the lead wires through the hole in the bottom of the motor cover and snap the cover in place. NOTE: To raise the water level in the water pan, turn the valve adjustment screw (located on the water valve inside the humidifier) clockwise to lower it and counterclockwise to raise it. 69-1104-3 2
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