I&O Manual - ECCS Control System - Categories On Thermal ...

Outdoor Reset Switch.
Press and drag toggle
switch from OFF to ON.
The setpoint will now
be generated by the
curve entered above.
Entering temperatures in these 4 input
boxes will generate a linear curve in
which a setpoint based on outdoor air
temperature will be generated.
This is the setpoint which
is generated based on the
outdoor air curve entered
and the outdoor air
temperature.
Pressing this button will
go to the screen to set
up the Warm Weather
Shutdown Options.
CAUTION
This system cannot protect the boiler from cold water returning back to the boiler as is the case
when coming out of a warm weather shutdown scenario. In order to protect the boiler from
condensing, a primary/secondary piping arrangement or mixing valve must be installed in the
piping.
Figure 5.6: Outdoor Reset Setup Screen
This is the setpoint of the boiler water at the outlet of
the boiler. When in local the boiler will use this as its
operating setpoint.
The values for Setpoint,
On point and Off point are
for display only and come
directly from the boiler
temperature controller via
a Modbus connection.
These values come
directly from the Flame
Safeguard via a Modbus
connection.
Pressing and dragging this
switch with your finger will
change control from local to
remote operation.
Figure 5.7: Boiler Parameters Screen
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