7
HOW THERMAL TARGETING WORKS
SYSTEM START-UP
RECORD YOUR SETTINGS
Thermal Targeting technology analyzes thermostat activity and continually evaluates how much heat the house requires. When it
is very cold outside, the heat demand is high and the Fuel Smart HydroStat will raise the boiler’s Target temperature to provide
needed heat to the home. When the outside temperature is milder, the heat demand is lower. During these periods, the Fuel
Smart HydroStat will lower the boiler’s Target temperature – saving fuel – while continuing to provide comfort to the house.
At initial start up, with the Economy Feature active, the control establishes a 145°F target temperature. To test the high limit
shut-off function, the Economy Dial must be turned to OFF. Once tested, restore the Economy setting. If the heating demand is
high, the target will increase over time to satisfy the heat load.
NOTE:
• Smart DHW Priority: During a call from an indirect water heater, the control will de-energize the circulator contacts (C1/C2) to
heat only the indirect tank ensuring an adequate supply of domestic hot water. The control will re-energize the circulator when
the indirect tank is satisfied or if the boiler temperature reaches 170°F. If the indirect call continues for 45 minutes, the control
will override the priority function energizing the circulator to provide space heating.
DATE INSTALLED __________________
HIGH LIMIT SETTING __________________
LOW LIMIT SETTING __________________
ECONOMY SETTING __________________
HydroStat 3200-Plus Instructions_ HydroStat Instructions.8pg 12/1/17 10:43 AM Page 7
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