Slant/Fin 3000-190 User Manual
Page 5
Setting the High Limit
The high limit is factory set at 190°F. To adjust,
turn the HI TEMP Dial
Ạ
to the desired setting.
Setting range: Model 3000 – 100°-220°F
Model 3000-190 – 100°-190°F
Setting the Economy Feature
The Economy Feature is factory set for a 1 zone heat-
ing system. To adjust, turn the ECONOMY Dial
ạ
to
the number of heating zones. Do not include indirect
water heaters in the number of heating zones. The
Economy Feature conserves fuel by reducing boiler
temperature (see “How Thermal Targeting Works”
below). If the heating system is unable to supply need-
ed heat to the house, the ECONOMY Dial should be
turned to a lower setting (example: In a three zone
house, turn the dial to 2 or 1). Conversely, if the boiler pro-
vides adequate heat, added fuel savings can be achieved by
selecting a higher setting (example: 4 or 5). If the heating
and indirect water heater signals were not separated when
wiring the control or if you do not use optional Cable 2, the
Economy Feature must be turned OFF to insure the boiler
supplies adequate temperature to heat the indirect tank.
Differentials
Differentials are automatic and will vary based on
control settings and boiler temperature.
5
SETTING THE CONTROL
HOW THERMAL TARGETING WORKS
SYSTEM START-UP
Thermal Targeting technology analyzes thermostat activity and continually evaluate 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 boilerʼs 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 boilerʼs Target temperature – saving fuel – while continuing to provide comfort to the house
.
SETTING
OFF Disables economy function. Will allow boiler to fire until hi-
limit temp is reached and re-fire with a 10° subtractive
differential.
LO Provides lowest level of fuel savings. Use this setting only if
the house does not stay warm at higher settings.
1
Recommended setting for single zone systems
2
Recommended setting for Two zone systems
3
Recommended setting for Three zone systems
4
Recommended setting for Four zone systems
5
Recommended setting for Five zone systems
HI
Provides highest level of fuel savings
Activating Thermal Pre-Purge (optional)
Fuel Smart HydroStat has a Thermal Pre-Purge feature to
maximize efficiency. When active, the control will purge higher
boiler temperatures down to 135° at the start of any thermo-
stat call and supply the latent energy in the boiler to the heat-
ing zone that is calling. During the purge cycle, the PURGE
LED will light. If the heat is not sufficient to satisfy the thermo-
stat, the control will energize the burner. This feature works
with single-zone and multi-zone heating systems utilizing cir-
culators or zone valves. No change in wiring is needed.
To Activate Thermal Pre-Purge
Push and hold the LWCO TEST button for 10 seconds. The
PURGE LED will blink twice and remain on as long as your
finger is on the button. To deactivate the feature, push and
hold the button a second time for 10 seconds. The PURGE
LED will blink twice and turn off.
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.
190
175
16
0
14
5
130
115
Model 3000
Model 3000-190