Install Instructions

29
110503-01 - 4/20
CL Installation & Service Manual
10 Operating (continued)
3. 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 when
ever the temperature is below 100
degrees.
To change between degrees Fahrenheit and
degrees Celsius
• Turn the LO TEMP dial to access the
Program Mode - indicated in the display as
Pro.
• Turn the HI TEMP dial to select feature 2.
• Push the Test/Setting Button to c for
Celsius or F for Fahrenheit.
• Reset LO TEMP and HI TEMP settings to
desired temperatures.
4. Manual Reset Low Water Cut-Off:
The low water cut-off operation on the
HydroStat 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 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 code
requirements.
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.
To activate Manual Reset LWCO mode
• Turn the LO TEMP dial to access the
Program Mode - indicated in the display as
Pro
• Turn the HI TEMP dial to select feature 3
• Push the Test/Setting Button to A for
Automatic Reset Mode
• 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/
Setting button momentarily.
5. Circulator Activation Options
When in the default mode, the HydroStat
activates the circulator (C1/C2 contacts) on
calls to TT. The control can be programmed
to activate the circulator on calls to ZC/ZR in
place of, or in addition to TT.
To change how the Circulator is activated
• Turn the LO TEMP dial to access the
Program Mode - indicated in the display as
Pro.
• Turn the HI TEMP dial to select feature 4.
• Push the Test/Setting Button to select.
between the following options:
A - Circulator on TT call only
b - Circulator on ZC/ZR calls
C - Circulator on both TT & ZC/ZR calls
• Reset LO TEMP and HI TEMP settings to
desired temperatures.
6. Circulator Hold Off (Enhanced Condensing
Protection)
To reduce the potential for condensing, on
a call for heat the control will allow
the boiler to heat to 125F prior to energizing
the circulator. Once energized, the circulator
will remain on for the duration of the heating
call unless the boiler temperature drops below
115F. If this occurs, the circulator will
re-energize when the boiler returns to 125F.
Circulator Hold Off will expire after 15
minutes.
To activate Circulator Hold Off
• Turn the LO TEMP dial to access the
Program Mode - indicated in the display as
Pro.
• Turn the HI TEMP dial to select feature 5.
• Push the Test/Setting Button to Circulator
Hold Off ON or OFF.
• Reset LO TEMP and HI TEMP settings to
desired temperatures.
7. Setting the Well Type (Elctro-Well vs.
Standard Immersion Well)
When used to replace older temperature-
only controls, the HyrdroStat can be installed
on the existing well. (The Hydrolevel Elctro-
Well is required to activate low water cut-off
operation. Older wells may contain hardened
heat transfer grease or other contaminants
that could interfere with metal-to-metal
continuity between the sensor head and the
inside of the well. Insufficient contact could
lead to false low water conditions and burner
shut downs. Setting the well type to
Standard Well prevents the possibility of
this occurring.