W8710A EQUIPMENT MONITORING SYSTEM
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68-0256
4.
The next screen displays the System Delay Time.
The standard factory setting for the System Delay Time is
20 minutes for all types of systems. ThIs is the length of
time a fault must exist before an alert report is sent. During
this time, the W8710A checks and rechecks to determine if
the fault continues to exist. To change the System Delay
Time, press UP or DN. When preferred Delay Time is
reached, press Enter.
NOTE: Be sure the System Delay Time is set to the time it
takes for the system to stabilize after startup. Honey-
well recommends that this setting be at least 12 min-
utes.
IMPORTANT
The following fault conditions have factory-set delay
times that are not overridden by the System Delay
Time. These alert report are sent after the following
number of minutes:
— MIN and MAX Temperature Alert Reports: System
Delay Time is five minutes.
— F2 Alert Reports: System Delay Time is three min-
utes.
5.
The next screen displays the Minimum Temperature
Alarm.
If the air temperature surrounding the return air sensor
drops below this number, an alert report is sent (even when
the HVAC system is turned off). The standard factory
setting for the Minimum Temperature Alarm is 40° for all
types of system. To change the Minimum Temperature
Alarm, press UP or DN. When the desired temperature is
reached, press Enter.
NOTE: In colder climates, it is preferable to adjust the Mini-
mum Temperature Alarm to 50° or 60° to allow extra
response time. Honeywell recommends that you ask
your customer what setback temperature they use at
night or while away from home.
6.
The next screen displays the Maximum Temperature
Alarm.
If the air temperature at the return air sensor rises above
this number, an alert report is sent (even when the HVAC
system is turned off). The standard factory setting for the
Minimum Temperature Alarm is 120° for all types of sys-
tems. To change the Maximum Temperature Alarm, press
UP or DN. When the preferred temperature is reached,
press Enter.
NOTE: If the return air runs outside the conditioned space
(such as attic or roof-top unit), you may need to
adjust the Minimum and Maximum settings accord-
ingly.
Standard Calibration
Standard calibration is the average at which most heating and
cooling systems operate. Standard calibration uses the
calculation used to determine that the system is operating
correctly. See Table 2 for the W8710A standard calibration
settings.
Customizing Standard Calibration Settings
IMPORTANT
Using customized calibration overwrites the W8710A
standard (default) calibration programming. Carefully
review procedures before changing calibration.
Reasons to change standard calibration settings:
1.
Mismatched systems with below average D/Ts.
2.
Older or poor airflow systems with below or above aver-
age D/Ts.
3.
Systems with D/Ts that significantly deviate from stan-
dard calibration D/Ts.
During custom calibration, the W8710A analyzes the system
and calculates the optimum heating and cooling D/Ts. Then
these custom D/Ts are used to override the standard (default)
calibration D/Ts. These custom D/Ts are also used as
monitoring benchmarks.
Before running custom calibration, be sure the System Delay
Time is correctly set.
NOTE: If the system has run long enough to stabilize in the
Cool or Heat mode being calibrated, reduce the Sys-
tem Delay Time to three or four minutes.This saves
time but the original System Delay Time (20 minutes
is default) must be reset after completing the custom
calibration.
If you have problems, cause errors during custom calibration,
or if the computer locks up, reboot the W8710A by unplugging
the Handheld Programmer and sliding the Power switch in the
lower right corner of the circuit board to Off and then back to
On again. Rebooting restores the last calibrated information
and allows resuming custom calibration.
After running custom calibration, if dissatisfied with the
W8710A settings, press the CAL key and press the 2 Restore
key to restore standard calibration.
To run custom calibration, on the Handheld Programmer:
1.
Press the 6 key.
2.
Press the 1 key (CALIB).
3.
Press the 1 key to calibrate Heat, the 2 key to calibrate
Cool, or the 3 key to Exit (quit).
SYSTEM DELAY = 20
UP/DN OR ENTER
MIN TEMP = 40
UP/DN OR ENTER
MAX TEMP = 120
UP/DN OR ENTER
1-CALIB
3-HUMID
2-TEMP
4-D/T
CALIB
2-COOL
1-HEAT
3-EXIT
