2 SMART SYSTEM Status screen
5
PC Program Instructions
Figure 2-1_SMART SYSTEM Status Screen
To monitor and record the operation of the heater, click on the
Status tab along the top of the Main Screen window (FIG. 1-1,
page 4). The SMART SYSTEM Status Screen will appear (see
FIG. 2-1 above). The screen is divided into several sections.
The Sensors section displays the current temperatures seen by
the Inlet, Outlet, System Inlet, System Outlet, Tank, Outdoor,
and Flue sensors. It also shows the delta T across the heat
exchanger and the voltage being applied to the 0-10Vdc input
(FIG. 2-1). The controlling sensor is shown below the items
mentioned above. The default controlling sensor is the Outlet
sensor. If a System Supply sensor is connected, the control will
automatically use it as the controlling sensor.
The SMART SYSTEM can be programmed to use the Inlet
sensor if desired. When so programmed, the Outlet sensor
will be displayed for the first 3 minutes after the burner lights,
and then the Inlet sensor will be displayed.
Power-fin Models Only: If a System Return sensor is
connected, the control will use it as the controlling sensor, and
display its reading instead.
Below the temperature readings are Derivative Flue and
Derivative Outlet. These show how quickly these
temperatures are changing. The control will take certain
actions based on these values. For instance, if the outlet
temperature rises too quickly, the control will force the heater
to run at low fire.
To the right of the sensor temperature readings are the
various setpoints. The SH setpoint is the setpoint the SMART
SYSTEM uses during a space heating call for heat. Note that
this setpoint will depend upon the outdoor temperature if the
outdoor air sensor is connected. When the 0-10Vdc input is
used, this setpoint will vary with the input voltage if it is used
to control the setpoint. The tank setpoint is the setpoint used
when a Tank sensor is connected. The DHW Mod Setpt is the
outlet temperature setpoint used when heating an indirect
DHW tank. The dSP setpoint is used when the inlet sensor is
programmed as the controlling sensor. Below these is a check
box indicating if Night Setback is active or not. Finally, the
HSI Current and Flame Current are shown.
Below the Sensors section is the Inputs section (FIG. 2-1).
This section displays the status of the Enable (Room
Thermostat) Input, DHW Thermostat, Manual Reset High
Limit, Flow Switch/Low Water Cutoff (optional), Gas Pressure
Switch (optional), Louver Proving Switch (optional), Air
Pressure Switch, Blocked Drain Switch, and Auto Reset High
Limit Switch.
Next to the Inputs section is the Outputs section (FIG. 2-1).
This section shows the status of the Boiler (secondary) pump,
System (primary) Pump, DHW Pump, Blower, Gas Valve (1),
Run-time Contacts, and Alarm Contacts.