Slant/Fin 3000-190 - Manual (Page 6)

6
ᕡ
HI TEMP Illuminates when the
boiler water temperature reaches the
high limit setting. It will remain lit until
the water temperature falls 10° (see
High Limit Differential on page 5). The
Fuel Smart HydroStat prevents burner
operation while this
LED is on.
ᕢ
LWCO ACTIVE Indicates that
the low water cut-off (LWCO) function
of the Fuel Smart HydroStat is active.
When the control is installed with a
Hydrolevel Electro-Well, this LED will
be on at all times when the control is
powered. IMPORTANT: If the control is
installed with a well other than the
Electro-Well, this LED will not illuminate
indicating that the control is not providing
low water cut-off functionality.
ᕣ
LWCO LOW WATER Illuminates if the boiler is in a
low water condition. The Fuel Smart HydroStat will prevent
burner operation during this condition. IMPORTANT: The
system must be checked by a qualified heating professional
prior to resuming operation.
WARNING: DO NOT ADD WATER UNTIL THE
BOILER HAS FULLY COOLED.
ᕤ
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” on page 5 for more information).
ᕥ
ECONOMY TARGET When
the Economy feature is active, the
Fuel Smart HydroStat continually sets
target temperatures 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 (see Differentials on
page 5) at which point the boiler will
be allowed to fire again. NOTE: This
LED illuminates regularly during
normal boiler operation.
ᕦ
PURGE
The control is purging latent heat from the boiler and will not
fire until the temperature drops to 135°F. See page 5 for
additional information on Thermal Pre-Purge.
ᕧ
LWCO TEST Button
To Test Low Water Cut-Off: Press and hold the LWCO
TEST button.
The red Low Water light should illuminate and the burner
circuit should de-energize. NOTE: The control must be
installed with a Hydrolevel Electro-Well for low water cut-off
functionality (see page 2 for more details).
TROUBLESHOOTING
Burner Will Not Fire See Flow Chart, page 7
No or Insufficient
Domestic Hot Water
If installed with an indirect water heater, insure that the end switch in the relay box
controlling the indirect water heater is properly connected to Cable 2 (see wiring steps 3
and 4 on page 3). This will insure that the domestic water calls are prioritized. If Cable 2
is not used, turn the Economy Feature OFF.
House Will Not Get
or Stay Warm
1. Check for air-bound radiators. 2. Check thermostat settings including heat anticipator
settings (common on non-digital thermostats). 3. Check the Economy setting. The
Economy feature, much like outdoor reset controls, lowers average boiler temperature
and can slow or the house from coming up to temperature. Move to a lower setting (see
“Setting the Economy Feature” on page 5).
Low Water Light
(Red LED) is On
WARNING: A low water condition is a serious and potentially dangerous condition. Do not
attempt to add water to a hot boiler. Allow the boiler to fully cool before adding water.
The LOW WATER light indicates that the control is not detecting water in the boiler.
1. If the light is on and the heating system is filled with water, pull the sensor out of the well and
inspect it. Make sure that the metal clip on the sensor is intact. This metal clip must be in contact
with the inside of the copper well in order for the control to sense the presence of water. Check
that the well does not have excessive build-up of heat transfer grease that may interfere with clip
contacting the well.
2. Remove well and examine for excessive residue build-up. Clean and re-install.
LED LEGEND and LWCO TEST BUTTON
Model 3000 shown above.
Model 3000-190 has 190° max high limit.