Filter
Top Products
“S” series AutoFlo Steam Humidifier
IMPORTANT NOTES:
EWC Controls Inc. 385 Highway 33 Englishtown, NJ 07726 800-446-3110 732-446-3110 FAX 732-446-5362
LOCATION:
Installing the steam unit in the attic is NOT recommended. Freezing temperatures, the possibility of flood damage, the
possibility of producing an environment where mold can start, are all good reasons to avoid this location. However, a
successful attic installation can be performed if the following components and safety measures are included:
1. A safety catch pan should be fabricated and installed directly underneath the entire air handler and the steam unit.
2. Safety catch pan should have a water sensor with fail open dry contacts wired in series with the Steamer control circuit.
3. The Fail safe blower interlock circuit on page 11 should be utilized with all devices included in the diagram.
4. Insulating the water supply line and drain lines is mandatory. If code allows, apply heat tape to the water supply line and
then insulate it.
5. A decision to operate the Steamer without the automatic drain valve may be necessary, if a suitable downgrade slope to
drain is not available. The drain lines should never be trapped, kinked, or routed above the Steamer.
6. A separate High Humidity cut-out should be mounted in the attic itself, and wired in series with the Steamer control circuit.
7. Routine maintenance of the Steamer must be adhered to, and annual inspections for moisture and/or mold on the wood
surfaces should be performed.
8. All ductwork must be completely sealed as the source of excess moisture in the attic will come from leaky ductwork.
WATER SUPPLY:
1. Remember, the Steamer water supply must measure minimum 25 ppm conductivity in order for the processor to reliably
detect the presence of water and the proper water level.
2. Plastic 1/4” water supply tubing is supplied in the box for you however, we recommend the use of copper tubing in most
applications as it is stronger, more reliable, and can support the weight of the WH100 water hammer arrester.
3. Use of a water hammer is highly recommended to dampen out water spikes when the Steamer opens & closes the valve.
Field Notes: