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Function 26
System Freeze Protection
NOTE: This parameter is only
present if the boiler is a cascade
master. Allows the user to set the
SYS FREEZE PROT
freeze protection when a system
PROTECT OFF
26
pump is used. Factory Default: OFF.
Selection of temperature activates
freeze protection. (Range: OFF,
-40
Function 27
Error System Sensor
Sets the control to display an error
message if the system sensor is
ERROR SYSTEM SENS
open or shorted. NOTE: This error
ON
27
does not stop the boiler (or boilers)
from running. Factory Default: ON
(Range: ON / OFF).
Function 28
Freeze Protection
Allows the user to set freeze
FREEZE PROTECTION
protection on the boiler. Factory
ON
28
Default: ON (Range: ON / OFF).
Function 29
DHW Modulation Mode
This
the boiler modulates for a DHW
demand. In NORMAL MOD mode,
the boiler will modulate down
from high fire when there is a DHW
demand. In LOW MOD mode, the
DHW MODULATE MODE
boiler will modulate up from low
NORMAL MOD
29
fire 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 Heater Mode
Allows for a non Westinghouse
boiler to be controlled when the
EXTRA BOILER MODE
cascade output has risen above the
OFF
30
percent of the cascade firing rate set
in this parameter. Factory Default:
Off (Range: 50% - 100%).
Function 31
System Sensor Mode
Suppresses the 'NO FOLLOWER'
display message if the boiler is used
SYSTEM SENSOR MODE
as a cascade master boiler with no
OFF
31
follower boilers connected. Factory
Default: OFF (Range: ON / OFF).
Function 32
Service Schedule
Selects a service date or time based
on the boiler run hours to program
the boiler maintenance schedule.
SERVICE SCHEDULE
Factory Default: OFF (Range: Date or
OFF
32
Run Hours). NOTE: Without setting
this function, Functions 33/34/35/36
will not display.
o
o
F – 104
F).
parameter
controls
how
Function 37
MODBUS MODE
OFF
37
Table 20 - 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
Function 33
Year
SERVICE SCHEDULE
Allows the user to set the year of the
YEAR 00/00/2000
33
next service reminder.
Hours
Allows the user to set the left two
SERVICE SCHEDULE
digits of the amount of run hours
10000's 00 000000
33
before next service reminder.
Function 34
Month
If the date function was selected, this
function programs the month. If you
SERVICE SCHEDULE
selected the run hour function, you
MONTH 00/00/2000 34
will need to program 10,000 hours, if
required.
Hours
Allows the user to set the middle two
SERVICE SCHEDULE
digits of the amount of run hours
10000's 0000 0000
34
before next service reminder.
Function 35
Day
SERVICE SCHEDULE
Sets the day of next service reminder.
DAY 00/00/2000
35
Hours
Sets the two right digits of the amount
SERVICE SCHEDULE
of run hours for the next service
10000's 000000
00
35
reminder.
Function 36
Telephone
Allows the user to input a telephone
TELEPHONE #
number that will display when
000 000 0000
36
maintenance is required.
Table 21 - Maintenance Reminder Function Screens
whl-445 Rev. 000 Rel. 014 Date 7.21.20
Modbus Mode
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.
Description
45
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