Spring Return Motors for 2-Position Back Draft, Outdoor Air Changeover, Zone or Minimum Position Damper Control

Operate Outdoor Air Dampers for Combustion or Makeup Air in Residential and Light Commercial Applications

Operate Changeover Dampers for Heating and Cooling Systems

Operate Minimum Position Dampers for Ventilation and Similar Applications

Include Internal Spat Switch for Controlling Auxiliary Equipment, Additional Motors or to Provide a Burner Interlock Switch

Spring Returns Motor to Start Position on Power Failure

Drive Shafts Located on Both Sides of Motor

Adjustable Auxiliary Switch for Cascading Motors or Operating Auxiliary Equipment

Thermal Breaker for Overload Protection During Lifting Stroke or if Motor Stall

WT8840 Water Heater Control is Designed for Use in Standing Pilot Applications Using an Immersion Well for Water Temperature Sensing

The WT8840 is Powered from a Thermopile Heated by the Standing Pilot Flame

Temperature Control as Well as Water Temperature Limit Function

Compact Size

Solenoid-Operated First Automatic Valve Opens on Thermostat Call for Heat, Closes When Call for Heat Ends

Diaphragm Operated Second Automatic Valve Opens Under Control of Regulator, Closes If Gas or Power Supply is Interrupted

All Adjustments, Wiring Connections and Pilot Outlet are Accessible from Top of Control

Adjustable Servo Regulator Effectively Maintains Almost Constant Gas Output Pressure Under Wide Fluctuations in Gas Supply Pressure

On-Off Lighting Sequence

Design for Interrupted Ignition with Intermittent Pilot on Gas Burners and Interrupted or Intermittent Ignition on Oil Burners

Recycles If Flame Signal Lost while in Run Failure to Establish Pilot Results in a Lockout

Safe-Start Check Prevents Start-Up If Flame-Simulating Failure Occurs in Flame Detector Circuit

Includes SPDT Alarm Contacts

Solid State Circuitry, Eliminates Warm-Up and Increases Resistance to vibration

Mounts and Removes Easily through Use of Captive Mounting Screws

Mounting Base is Made of Strong Thermoplastic

Easy to install, adjust and service

All adjustments and connections are accessible from top of control

Add separate energy cutoff (ECO) where codes call for dual safety shutoff

Complete safety shutoff on pilot flame failure

LITE-RITE (OFF-PILOT-ON) lighting sequence

Solenoid operated first automatic valve opens on thermostat call for heat

Closes when call for heat ends

Diaphragm operated second automatic valve opens under control of the regulator

Closes if gas or power supply is interrupted

Meet codes requiring dual safety shutoff

All adjustments, wiring connections and pilot outlet are accessible from top of control

ON-OFF lighting sequence