96
B.
Operating Mode
1. Home Screen
Under normal conditions, the boiler display shows
the “Home” screen and the display looks like that
shown in Figure 54. The temperature value shown
is the boiler’s supply temperature. Boiler status is
shown below the supply water temperature. The
“Home” screen provides the following “Buttons”
and information:
a.
Status
Button
Displays boiler’s current status including
measured temperatures, setpoint, firing rate,
current boiler demands, pump status and helpful
real time trends.
b.
Detail
Button
Displays additional boiler status information.
Detail screens provide in depth operating
parameter status such as active differentials,
sensor and setpoint sources.
c.
Help
Button
Describes active faults, lockout history and
provides service contact information.
d.
Adjust
Button
This control mode allows the user to view
and change Sage2.1 control parameters.
Password protection is provided to discourage
unauthorized or accidental changes to settings.
e. Efficiency information
“Energy Save On” – appears when the
outdoor reset or setback has lowered the central
heat setpoint based on outside measured air
temperature or time of day.
“Max Efficiency On”- appears when the boiler
return temperature is low enough to cause flue
gas condensation.
f. Boiler Status
When there is no call for heat this line shows
“standby”. Table 28 shows each possible status
and the control action taken during the condition.
Xii. Operation (continued)
Figure 5: Home Screen
Status
Control Action
Initiate
Power-up
Standby Delay
This state is entered when a delay is needed
before allowing the burner control to be
available and for sensor errors.
Standby
Boiler is not firing. There is no call for heat or
there is a call for heat and the temperature is
greater than setpoint.
Safe Startup
Tests flame circuit then checks for flame signal.
Drive purge
Driving blower to purge rate setting and waiting
for the proper fan feedback.
Prepurge
Purge the combustion chamber for the 10
second purge time.
Drive light-off
Driving blower to light-off rate setting and
waiting for the proper fan feedback.
Pre-ignition test
Test the safety relay and verify that
downstream contacts are off.
Pre-ignition
Energize the igniter and check for flame.
Direct ignition
Open main fuel valve and attempt to ignite the
main fuel directly from the ignition source.
Running
Normal boiler operation. Modulation rate
depending on temperature and setpoint
selections and modulating control action.
Post-purge
Purge the combustion chamber for the 30
second purge time
Lockout
Prevent system from running due to a detected
problem and record fault in Lockout History.
Table 28: Boiler Status
Summary of Contents for Alpine ALP080
Page 40: ...40 Figure 29 Condensate Trap and Drain Line V Condensate Disposal continued ...
Page 56: ...56 VIII Electrical continued ...
Page 57: ...57 VIII Electrical continued Figure 35 Wiring Connections Diagram ...
Page 58: ...58 Figure 36 Ladder Diagram VIII Electrical continued ...
Page 64: ...64 Figure 39 Modular Boiler Direct Vent Termination X Modular Installation continued ...
Page 65: ...65 Figure 40 Modular Boiler Concentric Vent Termination X Modular Installation continued ...
