Page 34
8.C.6 Restore Factory Default Settings
To restore all features to the factory default settings (see
Table 9 on page 35 for default settings).
1. Turn the LO TEMP dial to access the Program Mode
– indicated in the display as Pro.
2. Turn the HI TEMP dial to select feature dEF.
3. Push the Test/Settings Button toY to reset all features
to the default settings.
4. Reset LO TEMP and HI TEMP settings to desired
temperatures.
8.C.2 Degrees Fahrenheit or Celsius
The control has the ability to operate in degrees
Fahrenheit or Celsius. When operating in Celsius, a
c will appear in the display next to the temperature
whenever the temperature is below 100 degrees.
To change between degrees Fahrenheit and degrees
Celsius.
1. Turn the LO TEMP dial to access the Program Mode
– indicated in the display as Pro See Figure 27 on
page 35.
2. Turn the HI TEMP dial to select feature 2.
3. Push the Test/Settings Button to c for Celsius or F for
Fahrenheit.
4. Reset LO TEMP and HI TEMP settings to desired
temperatures.
8.C.3 Manual Reset Low Water Cut-Off
The low water cut-off operation on the control can be set
to operate in automatic (default) or manual reset mode.
When in manual reset mode, the control will shut-down
the burner immediately when a low water condition is
detected. If the low water condition is sustained for 30
seconds, the low water light will blink, indicating that the
control has locked out the burner. The control can only
be reset by pushing the Test Settings button on the top
of the control. The manual reset feature meets CSD-1
requirements.
IMPORTANT NOTE: 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.
To activate Manual Reset LWCO mode.
1. Turn the LO TEMP dial to access the Program Mode
– indicated in the display as Pro.
2. Turn the HI TEMP dial to select feature 3.
3. Push the Test/Settings Button to A for Automatic
Reset Mode or B for Manual Reset Mode.
4. Reset LO TEMP and HI TEMP settings to desired
temperatures.
To Test the Manual Reset Feature: Press and hold the
Test/Settings button located on the top of the control for
30 seconds to simulate a low water condition. After 30
seconds, the Low Water light will blink indicating that
the control is locked out. To reset the lock-out condition,
press the Test/Settings button momentarily.
8.C.4 Low water Cut-Off
To turn off Low Water Cut-Off.
1. Turn the LO TEMP dial to access the Program Mode
– indicated in the display as Pro
2. Turn the HI TEMP dial to select feature 8
3. Push the Test/Settings Button to turn Low Water Cut-
Off to
ON
or
OFF
4. Reset LO TEMP and HI TEMP settings to desired
temperatures
8.C.5 High Limit Differential
When the Economy feature is on, the control’s Thermal
Targeting feature actively sets varying differentials
based on system conditions. This option allows for
selecting a 10, 20 or 30 degree (Fahrenheit) fixed
differential when the Economy feature is turned OFF.
These optional differential settings are subtractive from
the HIGH LIMIT setting.
NOTE: If the Economy feature is on, this setting
will be overridden by the control’s Thermal
Targeting function.
To change the high limit differential.
1. Turn the LO TEMP dial to access the Program Mode
–indicated in the display as Pro.
2. Turn the HI TEMP dial to select feature 9.
3. Push the Test/Settings Button to select a high limit
differential of 10, 20, or 30 degrees.
4. Reset LO TEMP and HI TEMP settings to desired
temperatures.
LAARS Heating Systems
