Pid Control; Local Pid; Low Fire Hold; Freeze Protection - FULTON Endura EDR Installation, Operation And Maintenance Manual

SECTION 3
EDR-PURE-IOM-230608
ƒ PID Control
Local PID and ring rate modi ers are accessed in this category.

` LOCAL PID

Use the slider to set how passive or aggressive the control will act to meet
setpoint when the boiler is in local (standalone) mode. See Lead/Lag PID for PID
control of plants with multiple boiler sequencing.

` LOW FIRE HOLD

The boiler can be locked to low re rate after ignition for a set period of time. This
period of time can be enabled/disabled and adjusted on this screen.

` FREEZE PROTECTION

Two stages of freeze protection are provided. Stage 1 is only available if the boiler
(primary) pump is enabled in a primary secondary piping system. When the
boiler vessel water temperature falls below a con gured temperature, the boiler
(primary) pump will be enabled until the set temperature has been reached.
Stage 2 enables the burner if the boiler vessel water temperature falls below a
con gured temperature. The burner is held at low re until the set temperature
has been reached.

` OUTLET MONITORING

In addition to the mechanical Aquastat temperature high limit, the boiler
includes a digital control soft high limit available on the Outlet Monitoring
screen.
–
NOTE: If a high temperature condition occurs exceeding the high limit setting on
the mechanical Aquastat, the boiler will require a manual reset accomplished by
pressing the red Aquastat reset button.
The soft high limit acts to prevent nuisance manual reset high limit trips. If the
boiler outlet temperature exceeds the soft high limit, the burner will be driven to
low re until the outlet temperature is reduced to the value assigned in the Soft
Limit Reset.

` COLD START

This feature allows the boiler to slowly reach temperature when receiving a
demand at a cold water condition as con gured. When enabled, this modi er will
take priority over the PID until the con gured time or the con gured boiler water
temperature is reached.
Questions? Please Contact Your Local Manufacturer's Representative
OPERATION
!
WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes
and regulations.
Non-Fulton product information
is for reference purposes only. No
Fulton document should substitute
for full review of documentation
available from the component
manufacturer.
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