LP-387 Rev. 011 Rel. 005 Date 1.3.19
52
Screen Description
Function 28 Freeze Protection
FREEZE PROTECTION
ON 28
Allows the user to set freeze protection
on the boiler. Factory Default: ON
(Range: ON / OFF).
Function 29 DHW Modulation Mode
DHW MODULATE MODE
NORMAL MOD 29
This parameter controls how the
boiler modulates for a DHW demand.
In NORMAL MOD mode, the boiler
will modulate down from high re
when there is a DHW demand. In LOW
MOD mode, the boiler will modulate
up from low re when there is a
DHW demand. This mode is useful to
minimize short cycling when a large
boiler and small indirect tank are used
together. Factory Default: NORMAL
MOD (Range: NORMAL MOD / LOW
MOD).
Function 30 Extra Boiler Mode
EXTRA BOILER MODE
OFF 30
Allows for a non HTP boiler to be
controlled when the cascade output
has risen above the percent of
the cascade ring rate set in this
parameter. Factory Default: O
(Range: 50% - 100%).
Function 31 System Sensor Mode
SYSTEM SENSOR MODE
OFF 31
Suppresses the ‘NO FOLLOWER’
display message if the boiler is used
as a cascade master boiler with no
follower boilers connected. Factory
Default: OFF (Range: ON / OFF).
Function 32 Service Schedule
SERVICE SCHEDULE
OFF 32
Selects a service date or time based
on the boiler run hours to program
the boiler maintenance schedule.
Factory Default: OFF (Range: Date or
Run Hours). NOTE: Without setting this
function, Functions 33/34/35/36 will
not display.
Function 37 Modbus Mode
MODBUS MODE
OFF 37
Enables Modbus Mode on the
appliance. Factory Default: OFF
(Range: OFF, ON, AUTO). NOTE:
Turning Modbus Mode “ON” will open
a number of additional parameters
to customize Modbus installation.
See Modbus Instructions (lp-372) for
details. NOTE: Turning this Mode “ON”
without a connected and powered
Modbus communication adapter (p/n
7350P-629) will result in improper
appliance operation. Service calls
associated with this ARE NOT covered
by warranty.
Table 21 - System Setting Program Navigation
NOTE: For the following functions, you must have your
maintenance function turned on.
To change these functions, press ENTER. The left most digit will
begin to blink. Use the ^ or v arrows to change the digit. Use the
< > arrow keys to switch between digits. When you’ve made your
selection, press ENTER again.
Screen Description
Function 33 Year
SERVICE SCHEDULE
YEAR 00/00/2000 33
Allows the user to set the year of the
next service reminder.
Hours
SERVICE SCHEDULE
10000’s 000000 33
Allows the user to set the left two
digits of the amount of run hours
before next service reminder.
Function 34 Month
SERVICE SCHEDULE
MONTH 00/00/2000
34
If the date function was selected, this
function programs the month. If you
selected the run hour function, you
will need to program 10,000 hours, if
required.
Hours
SERVICE SCHEDULE
10000’s 000000 34
Allows the user to set the middle two
digits of the amount of run hours
before next service reminder.
Function 35 Day
SERVICE SCHEDULE
DAY 00/00/2000 35
Sets the day of next service reminder.
Hours
SERVICE SCHEDULE
10000’s 000000 35
Sets the two right digits of the
amount of run hours for the next
service reminder.
Function 36 Telephone
TELEPHONE #
000 000 0000 36
Allows the user to input a telephone
number that will display when
maintenance is required.
Table 22 - Maintenance Reminder Function Screens
G. Resetting the Maintenance Schedule
When the system control ashes MAINTENANCE REQUIRED, it is
advisable that you call for service. After the service is performed, reset
the schedule for the next required service by using the following
steps.
Press ENTER on the display for 3 seconds. The Menu code will appear
as 000. This does not change. Press ENTER again. SERVICE SCHEDULE
RESET will be displayed. Using the > key scroll to the selection of
year or hours. Press ENTER to reset the selected Service Schedule.
To change a setting, press ENTER. Press the ^ and v keys to make
adjustments. Press ENTER when reset is complete.
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