LP-293 Rev. 9.24.15
49
Screen Description
Function 26 System Freeze Protection
SYS FREEZE PROT
PROTECT OFF 26
NOTE: This parameter is only present
if the boiler is a cascade master. Allows
the user to set the freeze protection
when a system pump is used. Factory
Default: OFF. Selection of temperature
activates freeze protection. (Range:
OFF, -40
o
F – 104
o
F).
Function 27 Error System Sensor
ERROR SYSTEM SENS
ON 27
Sets the control to display an error
message if the system sensor is open
or shorted. NOTE: This error does
not stop the boiler (or boilers) from
running. Factory Default: ON (Range:
ON / OFF).
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.
Table 19 - System Setting Program Navigation
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.
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 00
0000 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 0000
00 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 20 - 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
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