Water Heater - Bloomfield 8783MCD Owner's Manual

WATER HEATER

Separate coffee brew water and faucet water
heater systems are identical. Each heating
element is protected from over-temperature
by a manual reset hi-limit safety thermostat.
Water temperature is sensed by a
thermobulb inserted into each water tank.
This temperature signal is fed to the
corresponding thermostat, which controls
line power to that tank's heating element.
The temperature setpoint is adjustable at the
thermostat.
WATER FLOW
AUTOMATIC COFFEE BREW
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.
A second brew cannot be initiated until delay
time (set by DELAY section of timer) is
completed
HOT WATER FAUCET
Water level in the faucet water tank is sensed
by an electronic probe. When no water is
sensed at the probe, the controller energizes
the faucet side of the fill solenoid.
NOTE:
If water is not detected at water level probe
for two minutes, unit will shut down.
NOTE:
The faucet is gravity fed from a tap in the
faucet water tank.
Fig. 5 Heat Control Diagram
E
BREW SOLENOID
BASIN
FAUCET SOLENOID
COFFEE
BREW
WATER
FLOW
BREW SOLENOID
CONTROLLER
E
FAUCET SOLENOID
FAUCET
WATER
TANK
HOT
WATER
FAUCET
FLOW
Fig. 6 Water Flow Diagrams
7
OPERATION (continued)
DELAY
TIMER
PAN
BREW
COFFEE
BREW
WATER
TANK
FAUCET
WATER
LEVEL
PROBE
HOT
WATER
BREW
SWITCH