U.S. Boiler Company K2WT-080B, Installation, Operating And Service Instructions

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XII. Operation
E. Boiler Sequence Of Operation (continued)
2. Using The Display
The Control includes a touch screen LCD display. The user monitors and adjusts boiler operation by selecting screen
navigation “buttons” and symbols. The “Home Screen” and menu selections are shown below. When no selection is
made, while viewing any screen, the display reverts to the “Home Screen” after 4 minutes. The “Home Screen” provides
boiler temperature, firing rate in BTU/hr, boiler status, efficiency information and page links.
(Figure 12.6) (Figure 14.1) (Figure 12.9)
Figure 12.4: Home Screen Details
(Figure 12.8)
Figure 12.5: Screen Navigation
132 F
140 F
Active
Fault
100%
Boiler 1
>
<
Central Heat
Lockout
Supply
Rate
Status:
Setpoint
Priority:
Home
Improper settings or service
create risk of property
damage, injury, or death.
Adjust
180
F
Energy Save On
High Efficiency On
Help
Adjust
Central Heat
Status
Detail
i
kbtu
hr
80
Boiler 1
Menu Buttons
Information Symbol
Software revision
numbers.
Fault Indication
User is guided by
“blinking” touch buttons
to Help screens that
identify the problem.
Rate
Firing rate is displayed as
kbtu/hr input.
Demand Status
The reason or cause of the boiler demand is
displayed; Central Heat, Auxiliary Heat,
Domestic Hot Water, Sequencer Control (peer-
to-peer Demand) or Frost Protection. Warm
Weather Shutdown status is shown. “Standby’
is shown when no demand is present.
Energy Save On Indication
Outdoor Air Reset, DHW or setback have
lowered boiler water setpoint.
High Efficiency On Indication
Return temperature is low enough to allow
energy saving flue gas condensation.
Help
Fault correction & service contact
Detail
In depth view of operation
Status
“Walk through” operation
Adjust
Modify boiler operation
Close Symbol
The “Close” symbol returns to the display to previous menu or screen.
Repeatedly pressing the “Close” symbol will always return the display
to the “Home” screen.
Arrow Symbol
The “Arrow” symbol links together all screens in the selected group.
For example, repeated pressing the right “Arrow” symbol will rotate the
display around all the screens in the Status group. Using this feature the
user can review all the boiler status and adjustment mode screens
Fault Symbols
“Active Fault” and “Rate Limit” symbols provide a link to the cause of a
boiler fault or firing rate limit. The first boiler status screen provides an
overview of boiler operation including fault status.
Status Screen
132 F
140 F
100%
Boiler 1
>
<
Central Heat
Running
Supply
Rate
Status:
Setpoint
Priority:
Central
Heat
Auxiliary
Heat
Domestic
Hot Water
Outdoor
Reset CH
1-2
Fault
Status
Lockout
History
1-2
Sequencer
Setup
Zone Panel
Setup
Service Contact
> < > <