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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
Compatible with ECO Connector
ON-OFF Lighting Sequence
Uses Rectification Principle of Electronic Flame Detection
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 Built-In Protection Against Ignition Crossover in Flame Rod Systems
Includes SPDT Alarm Contacts
Solid State Circuitry
Mounts and Removes Easily through Use of Captive Mounting Screws
Mounting Base is Made of Strong Thermoplastic
Combination Gas Control for Use in 24 Volt AC Gas-Fired, Standing Pilot Appliances with Capacities from 30 to 300 CFH
Compact Size
Solenoid-Operated First Automatic Valve Opens on Thermostat Call for Heat, Closes When Call for Heat End
Diaphragm Operated Second Automatic Valve Opens Under Control of Regulator
Closes if Gas or Power Supply is Interrupted
Meets Codes Requiring Dual Safety Shut-Off
Lite-Rite (Off-Pilot-On) Lighting Sequence
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
Compatible with ECO Connector
Combination Gas Control for Use in 24 Volt AC Gas-Fired, Intermittent Pilot Appliances with Capacities from 30 to 415 CFH
Compact Size
Solenoid-Operated First Automatic Valve Opens on Thermostat Call for Heat, Closes When Call for Heat End
Diaphragm Operated Second Automatic Valve Opens Under Control of Regulator, Closes if Gas or Power Supply is Interrupted
All Adjustment, 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
Compatible with ECO Connector
On-Off Lighting Sequence
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
Compatible with ECO Connector
On-Off Lighting Sequence
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
Compatible with ECO Connector
On-Off 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 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
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
Meets codes requiring dual safety shut-off
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
Compatible with ECO connector
LITE-RITE (OFF-PILOT-ON) lighting sequence
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
Adjustments, Wiring Connections and Pilot Outlet Accessible from Top of Control
Compact Size
On-Off Lighting Sequence
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
Adjustments, Wiring Connections and Pilot Outlet Accessible from Top of Control
Compact Size
On-Off Lighting Sequence
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