Hot Tank Principles Of Operation - WaterLogic WL2FW FIREWALL Series Manual

HOT TANK PRINCIPLES OF OPERATION

All Waterlogic Hot Tanks have a built-in Vent or
HOT TANK
Expansion Chamber in the top of the tank except for
WL1000GF units.
OUTLET TUBE
The Vent Chamber allows for expansion of the water
when it is heated.
The chambers are separated by a welded-in tank
baffle.
Water always flows into the bottom of the tank and
EXPANSION
CHAMBER
out the top to the faucet.
The hot tank outlet tube has a restrictor in its base.
EXPANSION SLIT
This ensures the reservoir is always full by allowing
more water in than out.
There is a small hole in the side of the tank outlet tube
that allows air and water to pass into the vent
chamber as it is heated.
Water in the vent chamber is suctioned back through
the outlet tube vent hole when water is dispensed.
Expansion of water as it is heated in the reservoir will
THERMISTOR
push the water out the faucet when the outlet tube
WELL
vent hole becomes plugged with debris or scale.
The small Outlet Vent Hole is susceptible to scale build
HEATER
up and is a key indicator that descaling is required.
ELEMENT
It is critical to descale the hot tank through the vent
line and outlet line on a regular basis to prevent this
problem.
Descaling through the inlet and/or outlet lines only
will not clean the vent chamber and outlet vent hole
INLET TUBE
properly.
WL2 FW Manual
Page 13 – Revision EU05-07-17