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This screen displays information
about cascade status. The TT in
the center of the top line shows
that cascade demand is coming
from 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.
show which boiler addresses are
CASCADE TT 0123 567
currently communicating to the
SYS PUMP ON
12:47P
master. If a boiler address is not
used or communicating, the number
will not display. In the example to
the left, 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 the system pump output
contacts.
Press v once.
This screen displays overall cascade
power output. The range of this
value is the number of boilers
communicating with the Master x
CASCADE PWR
100%
100. For example, if 8 boilers are
PRESENT 01234567
connected and firing, the maximum
cascade power is 800%. The second
line shows which boiler addresses
are communicating with the Master.
Press v once.
This screen displays current system
o
CASCADE SYST
118
F
temperature sensor reading on the
o
CASCADE SET
190
F
top line and the cascade system
temperature setting on the bottom.
Press v once.
This screen displays the current
cascade power demand output
on a per connected boiler basis
for boilers addressed as 0 and 1.
BOILER 0
100%
In the example, boiler 0 is being
BOILER 1
56%
commanded to fire at 100% and
boiler 1 at 56%. If this were a 2 boiler
system, the 'CASCADE PWR' screen
above would read 156%.
Press v once.
This screen displays the current
BOILER 2
0%
cascade power demand output on a
BOILER 3
0%
per connected boiler basis for boilers
addressed as 2 and 3.
Press v once.
This screen displays the current
BOILER 4
0%
cascade power demand output on a
BOILER 5
0%
per connected boiler basis for boilers
addressed as 4 and 5.
Press v once.
This screen displays the current
BOILER 6
0%
cascade power demand output on a
BOILER 7
0%
per connected boiler basis for boilers
addressed as 6 and 7.
The
following
numbers
Press v once.
BOILER 8
N/A
BOILER 9
N/A
Press v once.
BOILER A10
N/A
BOILER B11
N/A
Press v once.
BOILER C12
N/A
BOILER D13
N/A
Press v once.
BOILER E14
N/A
BOILER F15
N/A
Table 24 - Cascade Menu
C. Boiler Test Mode
This function is intended to simplify gas adjustment. The
following tables include recommended combustion settings
by fuel type and boiler fan speeds. Automatic modulation does
not take place while 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 to enter
Test Mode with the largest load possible to create such a heat
demand that Test Mode will not be interrupted. To enter Test
Mode press ^ and ENTER simultaneously.
NOTE: The boiler will automatically exit Test Mode after 20
minutes of operation.
To leave Test Mode press ^ and v simultaneously.
SERVICE RUN
PUMP ON
Combustion Settings on All Models
Fan Speed
Low
Carbon
Monoxide
0-10
(CO) PPM
Carbon
Dioxide
7 1/2 - 8 1/2
(CO 2 ) %
Table 22 - Combustion Settings - All Models
Fan Speeds
Model
Ignition
750
3800
1000
4100
Table 23 - Fan Speeds
Part 12 - Troubleshooting
A. Boiler Error and Fault Codes
If any of the sensors detect an abnormal condition, or an internal
component fails during the operation of the boiler, the display
This screen is not applicable.
This screen is not applicable.
This screen is not applicable.
This screen is not applicable.
3400 RPM
4:49P
Natural Gas (NG)
Ignition
High
0-30
8 1/2 - 9 1/2
Min
Max
3600
5200
3950
6400
WHL-038 Rev. 1.29.16
51
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