Instantaneous KW Demand (3):
When this mode is
selected, the
Actual KW Demand
display will indicate
Instantaneous Demand
showing real-time changes in
demand of the total load as it occurs. This is useful for
determining how much energy is required to operate
various loads so that an understanding of your energy
requirements may be achieved. Your actual demand may
be compared to the typical residential appliance ratings
given in Table 3. The
Instantaneous
LED light will be on
when in this mode, as shown above.
Average KW Demand (4):
In this mode, the
Actual KW
Demand
display will indicate your
Average
Demand
over
a running 15, 30 or 60 minute interval depending on the
interval selected in the system programming mode. This
interval is the same as the demand averaging interval
used by your utility meter. Therefore the average de-
mand shown on your 9212 is, approximately equal to
the demand level your meter is presently recording. The
Average
LED light will be on when in this mode.
Peak KW Demand (5):
In this mode the
Actual KW
Demand
display will indicate the highest actual average
(peak) demand-since-reset. This indicator is intended to
allow you to monitor your daily, weekly, or monthly
peaks in order to gain an understanding of how and when
these peaks occur. In this way, energy use patterns may
be modified, if desired, to minimize these peaks. It
should be noted that if this indicator is reset only when
the utility meter is reset, the value displayed should be
approximately the same as the reading on the meter. A
slight difference between the utility meter's peak and the
Peak KW Demand
on the 9212 may be observed. This is
due to different demand averaging methods, varying
line voltages, power outages, measurement accuracy
and other factors. The utility meter will remain the final
determinate in your electric bill's demand charge. The
Peak
LED light will be on when in the
Peak KW Demand
mode.
Reduce Load (6):
The
Reduce Load
indicator will come
on and the alarm buzzer will sound when all controlled
loads have been turned off, but instantaneous demand
is still above the limit. When this occurs, you must either
reduce uncontrolled demand (or increase the limit) as
suggested in the operating instructions. You will not
hear the alarm buzzer sound if the volume is set to OFF.
Circuits On (7):
These LED indicators, when lit, tell you
which control circuits are enabled. A
Circuits On
indication does not necessarily mean that the controlled
load is on, but rather the load is free to go on if the
thermostat calls for it.
Decrease Key (8):
This key operates in conjunction with
the
Demand Limit Key (10)
,
Display Bright Key (11)
and
the
Buzzer Volume Key (12)
and is used to decrease the
functions controlled by these keys.
Increase Key (9):
This key operates in conjunction with
the
Demand Limit Key (10)
,
Display Bright Key (11)
and the
Buzzer Volume Key (12)
and is used to increase
the functions controlled by these keys.
Demand Limit Key (10):
This key is used to set the
demand limit and is used in conjunction with the
De-
crease Key (8)
or
Increase Key (9)
and allows you to
adjust the demand limit up or down to the level which
best suits your particular energy requirements.
Display Bright Key (11):
This key is used to adjust the
display brightness and is used in conjunction with the
Decrease Key (8)
or
Increase Key (9)
to set the display
brightness for the best visibility under existing lighting
conditions.
Buzzer Volume Key (12):
This key is used to control
the alarm buzzer volume in conjunction with the
De-
crease Key (8)
or
Increase Key (9)
and allows you to
adjust buzzer volume to meet various sound conditions.
Display Key (13):
This key allows you to display
Actual
KW Demand
as an
Instantaneous, Average
or
Peak
value.
Reset Peak Key (14):
When in
Peak Demand
mode,
this key allows you to reset the highest average (peak)
demand recorded since reset, as described above. This
can be reset at any time and is for owner information
only.
Control Panel Instruction (15):
These instructions,
printed on the front label of the Control Panel, instruct
you how to make all appropriate control settings.
Circuit Assignments (16):
This space is used to
record the loads controlled by the 9212 and is filled in
using the load schedule supplied by the installing
electrician on page 31 of this manual.
Basic Operations
Your 9212 has been designed for ease of operation and
to provide efficient energy use. Please carefully read
the following instructions concerning basic system
operation as they will enable you to maximize efficient
energy use and minimize your electric bill.
Step 1, Turning On the Unit:
Your 9212 should already
have been turned on by the installing electrician. If not,
there should be a breaker in your electrical load center
labeled “9212 Energy Sentry Demand Controller” or
similar. If this breaker is off, it should be turned on. If
you cannot locate a breaker labeled “9212,” you should
call your installing electrician.
Step 2, Setting Your Demand Limit:
Please refer to the
Control/Display Unit pictured in Figure 2 for this and
all succeeding steps. To set demand limit:
1.
Press and hold the
Demand Limit Key (10)
.
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