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

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

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

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