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52
BLOCKING HISTORY
8
08/28/2009
Fr 5:19A
Press v once.
BLOCKING HISTORY
9
08/28/2009
Fr 5:19A
Press v once.
BLOCKING HISTORY
10
08/28/2009
Fr 5:19A
Table 24 - Boiler Blocking Screens
B. Cascade Menu
This menu is accessed by pressing < at the default menu or > at
the status menu.
Screen
CASCADE MASTER READY
SYS PUMP OFF
CASCADE NO FOLLOWER
SYS PUMP OFF
CASCADE NO SENSOR
SYS PUMP OFF
WHL-052 Rev. 4.28.16
This screen displays the eighth
oldest boiler control blocking error.
The top line will alternate between
the words 'BLOCKING HISTORY'
and the actual blocking code
encountered.
This screen displays the ninth oldest
boiler control blocking error. The top
line will alternate between the words
'BLOCKING HISTORY' and the
actual blocking code encountered.
This screen displays the tenth oldest
boiler control blocking error. The
top line will alternate between the
words 'BLOCKING HISTORY' and
the blocking code encountered.
Description
This screen displays when the boiler
is configured as a Cascade Master and
the system is ready to accept a demand
for heat. The second line indicates the
cascade system pump output status.
This screen alternates with the default
screen every 5 seconds or can be
<
accessed by pressing the
key from
the default screen.
This screen displays 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
cascade system pump output status.
This screen alternates with the default
screen every 5 seconds or can be
<
accessed by pressing the
key from
the default screen.
This screen displays 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
cascade system pump output status.
This screen will alternate with the
default screen every 5 seconds or can
<
be accessed by pressing the
key from
the default screen.
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. The following numbers show
CASCADE TT 0123 567
which boiler addresses are currently
SYS PUMP ON
12:47P
communicating to the 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 100. For example, if
CASCADE PWR
100%
8 boilers are connected and firing, the
PRESENT 01234567
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
BOILER 0
100%
addressed as 0 and 1. In the example,
BOILER 1
56%
boiler 0 is being 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.
Press v once.
BOILER 8
N/A
This screen is not applicable.
BOILER 9
N/A
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