U.S. Boiler Company Alpine ALP080B, Installation, Operating And Service Instructions

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102 103448-10- 6/18
X. Operation
E. Boiler Sequence Of Operation (continued)
3. Status Screens
Boiler Status screens are the primary boiler monitoring screens. The user may simply “walk” though
boiler operation by repeatedly selecting the right or left “arrow” symbol. These screens are accessed by
selected the “Status” button from the “Home” screen.
Figure 40: Status Screen Overview
Figure 41: Boiler Status Screen Detail
NOTE
Only visible if Zone Panel is
connected. Zone Panel 1 and 2
shown typical for 1 through 4.
Active fault:
A hard lockout will cause the active
fault indication to appear. When
visible the text becomes a screen
link to the “Help” Menu.
Rate Limit:
The “6” symbol appears to the right
of the Rate % when firing rate is
limited or overridden in any way.
During the start-up and shutdown
sequence it is normal for the rate to
be overridden by the purge, light-
off and low fire hold requirements.
When a rate limit is the result of
boiler protection logic the “6” symbol
blinks and becomes a screen link.
Rate:
The rate % value is equal to the actual kbtu/hr input
divided by the boiler rated input.
Priority:
The selected Priority is shown. Available Priorities
are: Standby (no call for heat is present), Sequencer
Control, Central Heat, Auxiliary Heat, Domestic Hot
Water, Frost Protection or Warm Weather Shutdown.
Setpoint:
This is the active setpoint. This temperature
setpoint determined based on active priority;
Central Heat, Auxiliary Heat or Domestic Hot
Water. The setpoint may be the result of Outdoor
Air Reset and Setback selections.
Supply:
Measured supply water temperature. This is the
temperature being used to start/stop and fire boiler
when there is a call-for- heat. Header temperature is
shown when selected.
Status :
Information found at the
bottom of the Status screen
and on the Home screen.
Table 28 shows each status
and the action the control
takes during the condition.