32
111079-01 - 12/20
FR
Installation & Service Manual
e. ECONOMY
ACTIVE
Indicates that the
Thermal Targeting function is active and
the Fuel Smart HydroStat will reduce boiler
temperature to conserve fuel. The Economy
feature is activated using the ECONOMY dial.
(See “How Thermal Targeting Works” for more
information).
f. ECONOMY
TARGET
When the Economy
feature is active, the Fuel Smart HydroStat
continually sets target temperature
below the high limit setting to maximize fuel
efficiency. When the boiler water reaches
the target temperature, the LED illuminates
and the burner will shut down. The boiler
water will continue to circulate and heat
the house as long as the thermostat call
continues. The LED will stay lit until the boiler
temperature drops below the differential set
point at which point the boiler will be allowed
to fire again. See Differential explanation.
NOTE:
This LED illuminates regularly during
normal boiler operation.
g. TEST/TESTING Button To Test Low
Water Cut-Off
:
Press and hold the Test/
Settings button for 5 seconds. The display will
read LCO.
LWCO TEST LCO
The red Low Water light should illuminate and the
burner circuit (B1 and B2) should de-energize.
NOTE: The control must be installed with a Hydrolevel
Electro-Well
TM
for low water cut-off functionality.
To View Current Settings
:
Press and release the Test/
Settings Button in short intervals to sequentially
display the following settings:
HIGH LIMIT SETTING HL
LOW LIMIT SETTING LL
ECONOMY SETTING ECO
CURRENT TARGET TEMPERATURE 000
The display will return to boiler temperature (default)
if Test/Settings Button is not pressed for 5 seconds.
9
Operating
(continued)
