8
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 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
4. Reset LO TEMP and HI TEMP settings to desired temperatures (see page 4)
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
Pro
2. Turn the HI TEMP dial to select feature
dEf
3. Push the Test/Settings Button to
Y
to reset all features to the default settings.
4. Reset LO TEMP and HI TEMP settings to desired temperatures (see page 4)
OPTIONAL FEATURES continued
NOTE: If the HydroStat is factory-equipped on a boiler, some options may be set differently from the default settings.
SEE PAGE 4 FOR ADDITIONAL SETTINGS
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
5
Circulator Hold Off
on
OFF
Circulator Hold Off – Active
Circulator Hold Off – Inactive
on
6
Not available
on this control
7
Not available
on this control
8
Well Type
A
b
Hydrolevel Electro-Well
Standard Immersion Well
A
9
High Limit
Differential
10
20
30
10° Differential
20° Differential
30° Differential
10
dEF
Restore Factory
Defaults
Y
n
Restore Defaults
Do Not Restore Defaults
n