Model DH55
Dehumidistat
The DH55 control is designed to regulate the relative
humidity of confined spaces by cycling humidifying or
dehumidifying equipment. It is designed for use as
internal components for portable humidifiers and
dehumidifiers, and as wall mounted humidity controls
for central systems. The DH55 is a relative humidity
control, consisting of a humidity sensing element,
adjustable setpoint cam and an electrical switch. The
sensing element changes length in response to the
exposed RH to move the switch mechanisms at the
appropriate switch points.
Applications
• Ventilation fans for confined spaces.
• Dehumidifiers.
• Space and Product Humidifiers.
• Central HVAC units.
Features
• Strong plastic frame with integral switch.
• Improved woven nylon sensing element provides 12 times faster speed
of response than film nylon elements.
• Greater stability of setpoints over dramatic changes in relative humidity.
• Improved differential allowing 5%RH.
• Switch grade plastic frame eliminates the need for grounding the control.
• Adjustable setpoints with dial shaft control.
• Includes case and white cover for vertical wall mounting.
Specifications
• Insulation Material: Thermoplastic, Flame Class 94V-0.
Comparative Tracking Index 600.
• Ambient Temperature Limitations: Switch Head 0° C to 60° C.
Shipping -30° C to 65.6° C.
• Switch Type: SPST
• Enclosure Protection: IPOO
• Electrical Shock Protection: Class 1
• Humidity Ranges: 20 to 80%RH.
• Differentials: 5%RH.
820 Lincoln Avenue • West Chester, PA 19380
(877) 304-3785 • FAX (610) 696-8048
Specifications are subject to change without notice.
7/05
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