10
Low Water Cut-Off Function
To turn off Low Water Cut-Off
1. Turn the LO TEMP dial to access the Program Mode – indicated in the display as
2. Turn the HI TEMP dial to select feature
3. Push the Test/Settings Button to turn Low Water Cut-Off or
4. Reset LO TEMP and HI TEMP settings to desired temperatures (see page 7)
Restore Factory Default Settings
To restore all features to the factory default settings (see following chart for default settings)
1. Turn the LO TEMP dial to access the Program Mode – indicated in the display as
2. Turn the HI TEMP dial to select feature
3. Push the Test/Settings Button to to reset all features to the default settings.
4. Reset LO TEMP and HI TEMP settings to desired temperatures (see page 7)
Dial
Setting
Feature Options Description
Default
Setting
1
Thermal Pre-Purge
OFF
On
Purge Inactive
Purge Active
OFF
2
Fahrenheit or Celsius
F
c
Degrees Fahrenheit
Degrees Celsius
F
3
LWCO Manual or
Automatic Reset
A
b
Automatic Reset
Manual Reset
A
4
Circulator Options
A
b
C
Circulator operation on TT call only
Circulator operation on ZC/ZR call only
Circulator operation on call from either
A
Circulator Hold Off
Circulator Hold Off – Active
Circulator Hold Off – Inactive
Not available
on this control
Not available
on this control
Low Water Cut-Off
Function
Low Water Cut-Off ON
Low Water Cut-Off OFF
dEF
Restore Factory
Defaults
Y
n
Restore Defaults
Do Not Restore Defaults
n
NOTE: If the HydroStat is factory-equipped on a boiler, some options may be set differently from the default settings.
SEE PAGE 7 FOR ADDITIONAL SETTINGS
OPTIONAL FEATURES continued
HydroStat 3250-Plus Instructions: HydroStat Instructions.8pg 11/14/13 3:43 PM Page 10
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