Operating instructions

HONEYWELL L40818

IMMERSION CIRCULATOR

AND

LIMIT CONTROL

Fig.

SEQUENCE OF OPERATION

A call for heat by the thermostat energizes the R8184 control to bring on the burner. If burner ignites within approxi-

mately 45 seconds (safety switch timing), cad cell sees flame and burner continues to operate until call for heat is satis-

fied.

Circulator will run as long as boiler water temperature is up to the low limi,t setting of the L4081B controller. (termi-

nals R-W).

If boiler water temperature reaches setting of the high limit control (part of the L4081B controller) burner operation will

be discontinued but circulator will continue to operate as long as boiler water temperature is up to the setting of the low

limit side of the

L4081B controller.

When the high limit side of the

L4081B restores the circuit (terminals R-W)

on a

drop in boiler water temperature the burner will resume operation if the thermostat is still calling for heat.

No.

Wiring Diagram for Forced Hot Water Boilers Less Heater

HONEYWELL RE184

IMMERSION

TRANSFORME

Fig.

CIRCULATOR

OIL BURNER

SEQUENCE OF OPERATION

call for heat by the thermostat energizes the L8124C Control which in turn energizes the R8184 control to turn on the

burner. If burner ignites within approximately 45 seconds and the cad cell sees flame the burner will continue to operate

until the call for heat is satisfied. The circulator will also operate when the thermostat calls for heat if the boiler water

temperature is up to the setting of the low limit in the L8124C control.

boiler water temperature is below the low

limit setting the burner will operate but the circulator will not, giving preference to the domestic hot water demand.

On call for heat by the thermostat the burner will continue to operate until the thermostat is satisfied or the setting of

the high limit is reached. If the thermostat is not satisfied when the high limit is reached the burner will stop but the

circulator will continue to operate until the thermostat is satisfied.

Any time the boiler water temperature drops below the

setthg of the low limit ,the burner will be energized in order to

maintain domestic water temperature.

No.

Wiring Diagram for Forced Hot Water Boilers with Tankless Heater