HTP EL-110 Installation Manual Download

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Press the

▼ key once.

FAULT HISTORY 7
08/28/2009 Fr 5:19A

This screen displays the seventh oldest lockout fault that occurred in the boiler controller. The top
line will alternate between the words ‘FAULT HISTORY’ and the fault encountered. The bottom line
displays the date and time the fault occurred.

Press the

▼ key once.

FAULT HISTORY 8
08/28/2009 Fr 5:19A

This screen displays the eighth oldest lockout fault that occurred in the boiler controller. The top line
will alternate between the words ‘FAULT HISTORY’ and the fault encountered. The bottom line
displays the date and time the fault occurred.

Press the

▼ key once.

FAULT HISTORY 9
08/28/2009 Fr 5:19A

This screen displays the ninth oldest lockout fault that occurred in the boiler controller. The top line
will alternate between the words ‘FAULT HISTORY’ and the fault encountered. The bottom line
displays the date and time the fault occurred.

Press the

▼ key once.

FAULT HISTORY 10
08/28/2009 Fr 5:19A

This screen displays the tenth oldest lockout fault that occurred in the boiler controller. The top line
will alternate between the words ‘FAULT HISTORY’ and the fault encountered. The bottom line
displays the date and time the fault occurred.

Table 22

– Fault History Screens

B. BOILER TEST MODE

This function is intended to simplify the gas adjustment. Listed in

Table 24

are the recommended combustion

settings for the gas type selected to run the boilers. Automatic modulation does not take place when the controller
is in test mode. However, the boilers will modulate down if the program set point is reached while running in test
mode. It is recommended you have the largest load possible to create a heat demand so the test mode operation
will not be interrupted. To enter test mode, press the

▲ and

ENTER

keys simultaneously. To exit, press

▲ and ▼

simultaneously.

NOTE:

The boiler will automatically exit test mode after 20 minutes of operation.

C. CASCADE MENU

This menu is accessed by pressing the



key from the default menu or the



key from the status menu.

SCREEN

DESCRIPTION

CASCADE MASTER READY

SYS PUMP OFF

This screen tells the user that the boiler is configured as a Cascade Master Boiler and that the
cascade system is ready to accept a demand for heat. The second line indicates the status of the
system pump output of the cascade system. This screen will alternate with the default screen every 5
seconds or it can be accessed by pressing the



key from the default screen.

CASCADE NO FOLLOWER

SYS PUMP OFF

This screen is displayed when the boiler is configured as a Master Boiler and there are no connected
follower boilers, or the follower boilers are not powered. The second line indicates status of the
cascade system pump output. This screen will alternate with the default screen every 5 seconds or it
can be accessed by pressing the



key from the default screen.

CASCADE NO SENSOR

SYS PUMP OFF

This screen is displayed when the boiler is configured as a Master Boiler and there is no system
temperature sensor connected or the system sensor is defective. The cascade system will still
function in this situation with reduced efficiency. All boilers will run simultaneously rather than in a
staged fashion. The second line indicates the status of the system pump output of the cascade
system. This screen will alternate with the default screen every 5 seconds or it can be accessed by
pressing the



key from the default screen.

CASCADE TT 0123 567

SYS PUMP ON 12:47P

Shows information about cascade status. The TT in the center of the top line shows that the cascade
demand is coming from the TT contact being closed. You may also see DHW if the demand is from a
DHW sensor, or 0-10 if the demand is from a 0-10 volt input. The following numbers show which
boiler addresses are currently communicating to the master. If a boiler address is not used or
communicating, the number will not show on the display. In the example above, boiler address #4 is
not communicating. When a boiler

in the system is firing, its address number will alternate with a ‘.’

to signify it is firing. The bottom line shows the status of system pump output contacts.

Press the

▼ key once.

CASCADE PWR 100%
PRESENT 01234567

This screen shows the overall cascade power output. The range of this value is the number of boilers
communicating with the Master x 100. For example, if 8 boilers are connected and communicating,
the maximum cascade power is 800%. The second line shows which boiler addresses are
communicating with the Master.