Bloomfield 8778, 8785, 8783 Water Heater, Water Flow, OPERATION continued, Heat Control Diagram

OPERATION (continued)

WATER HEATER

Water temperature is sensed by a thermobulb inserted into the water tank. This temperature signal is fed to the thermostat, which controls line power to the heating element.

The setpoint temperature is adjustable at the thermostat.

The element is protected from over- temperature by a hi-limit thermostat.

Fig. 5 Heat Control Diagram

622 75854 Owners Manual Gourmet 1000 Airpot/Thermal

WATER FLOW

POUR-OVER FEATURE

Pouring any amount of cold water into the pour-over opening and into the basin pan forces an identical amount of hot water out of the tank and through the spray head into the brew chamber.

AUTOMATIC OPERATION

Pressing BREW button energizes the solenoid valve, allowing water from an external water supply to flow into the basin pan and then into the hot water tank. This forces an identical amount of hot water out of the tank and through the spray head into the brew chamber

The solenoid uses a flow control device so that flow is consistent between 20 p.s.i. and 90 p.s.i.

Length of time the solenoid is open is controlled by the timer.

HOT WATER FAUCET

The faucet water coil is submerged in the hot water tank and draws heat from the brew water. Water going to the water coil is not controlled by the solenoid valve.

Hot water is provided at the faucet, at supply water pressure, any time the faucet shut-off valve is OPEN.

MANUAL

POUR-OVER

BASIN

PAN

BREW

TANK

ESOLENOID

MANUAL

POUR-OVER

BASIN

FAUCETPAN

BYPASS

BREW

TANK

SOLENOID

FAUCET

SHUT-OFF FAUCET

VALVE

FAUCET

BYPASS

WATER

COIL

TANKHOT

WATER

Fig. 6

7