Honeywell W7081, W7100A, W7100C Catalog Page
Legacy Building Systems
W7081 Limit Controller
Used with W7080A Load Analyzer to provide cold deck low limit,
hot deck high limit, and economizer/mixed air low limit functions.
• Limits the maximum and minimum temperatures of the hot and cold
deck and of the mixed air by supplying modified demand signals to
the W7080A Load Analyzer and to the economizer
• The positive limits stabilize deck temperatures under light load
conditions providing greater comfort and reducing energy usage
• Has jumper selectable set points for each of its 3 functions
• Compact to fit easily in HVAC system control panel
• Mounts with 4 No. 8 screws (not provided) through holes in base
Application Size:
Dimensions, Approximate: 6 1/4 in. high x 4 1/8 in. wide x 2 5/16 in. deep
(159 mm high x 105 mm wide x 59 mm deep)
Electrical Connections: 1/4 in. quick-connect male terminals
Power Consumption: 0.29 VA maximum
Operating Temperature Range: -40 F to +150 F (-40 C to +65 C)
Product Number Application Control System Compatible with: Description
W7081A1015/U Split System; Heat Pump Systems; Furnace; Packaged RTU W7080 control system W7080 Load analyzer Limit Controller
Small (<20 I/O Points)
Shipping Temperature Range: -40 F to +150 F (-40 C to +65 C)
Approvals
ASHRAE Guidelines:
Canadian Standards Association: Component Recognized
Department of Defense Guidelines: Meets
Underwriters Laboratories, Inc: Component Recognized
Meets ASHRAE 90-75
W7100A,C Discharge Air Temperature Controller
and consumption by maintaining the minimum amount of heating
or cooling capacity required to hold the discharge air set point.
Utilize economizer for free cooling when available.
• W7100 Controller maintains an average discharge air temperature
in variable air volume (VAV) cooling systems by modulating an
economizer and sequencing stages of mechanical cooling
• The W7100 can be applied to electric makeup air and other systems
requiring discharge air control of multistage heating or cooling
• Staging capacity of the W7100A,C can be extended six stages
using a W7101A Satellite Sequencer
• When power is interrupted, the system cycles to all stages off
• When power is restored, the economizer will first be modulated
open (if enthalpy is suitable), then stages of mechanical cooling
will be sequenced on
• If enthalpy is not suitable for economizer operation, the first stage
Maintain an average discharge air temperature in variable air
volume (VAV) systems, or other systems requiring discharge air
control of multistage cooling or heating. Reduce kilowatt demand
Dimensions, Approximate: 8 5/8 in. high x 6 1/2 in. wide x 3 in. deep
(219 mm high x 161 mm wide x 76 mm deep)
Contact Ratings:
NO 240 VA inrush @ 24 Vac, 60 VA running @ 24 Vac
NC 75 VA inrush @ 24 Vac, 30 VA running @ 24 Vac
NO 750 VA inrush @ 120/240 Vac, 75 VA running @ 120/240 Vac
NC 240 VA inrush @ 40 Vac, 30 VA running @ 24 Vac
Electrical Connections: 1/4 in. quick-connect male terminals
Vo lt ag e: 20 to 30 Vac
Frequency: 50 Hz; 60 Hz
of cooling or heating is energized within five minutes
• Reset signal from either space sensor or outdoor air sensor
Power Consumption: 12 VA at 24 Vac, 50/60 Hz (max).
Operating Temperature Range: 40 F to 90 F (4 C to 32 C)
Setpoint Temperature Range: 40 F to 90 F (4 C to 32 C)
Shipping Temperature Range: -40 F to +150 F (-40 C to +65 C)
Accessories:
S963B1037-Manual Potentiometer (480 ohm)
S963B1078-Manual Potentiometer (500 ohm)
S963B1128-Manual Potentiometer (135 ohm)
Product Number Application
W7100A1053/U Discharge Air 0 Heat / 6 Cool W7100 family Staged On/Off 20 to 30 Vac Discharge air
W7100C1018/U Discharge Air 2 Heat / 4 Cool W7100 family Staged On/Off 20 to 30 Vac Discharge air
336 customer.honeywell.com 70-6910
Application
Size
Control
System Output Type Description Comments
temperature controller
temperature controller
Additional stages of heating and
cooling can be achieved by adding
a W7101 Satellite Sequencer
Additional stages of heating and
cooling can be achieved by adding
a W7101 Satellite Sequencer
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