Hydrolevel 3250-Plus - Manual (Page 9)

9
OPTIONAL FEATURES continued
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 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
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
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
for Automatic Reset Mode or for Manual Reset Mode
4. Reset LO TEMP and HI TEMP settings to desired temperatures (see page 7)
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.
Circulator Activation Options
When in the default mode, the HydroStat activates the circulator (C1/C2 contacts) on calls to TT. The control can be pro-
grammed to activate the circulator on calls to ZC/ZR in place of, or in addition to, calls to TT.
To change how the Circulator is activated
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 select between the following options:
- Circulator on TT call only
- Circulator on ZC/ZR call only
- Circulator on both TT & ZC/ZR calls
4. Reset LO TEMP and HI TEMP settings to desired temperatures (see page 7)
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.
To activate Circulator Hold 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 Circulator Hold Off
or
4. Reset LO TEMP and HI TEMP settings to desired temperatures (see page 7)
MORE OPTIONAL FEATURES ON NEXT PAGE
HydroStat 3250-Plus Instructions: HydroStat Instructions.8pg 11/14/13 3:43 PM Page 9