507341-01
18
Heating Operation Conventional Heat/Cool and Heat Pump Systems
When a in-zone thermostat makes a demand for heating, the zone damper
opens and heating equipment begins operating. Heating demand is
terminated when:
1.
All zone demands for heating are terminated.
2.
The demand has exceeded the heat/cool changeover time limit
(20minutes) while a cooling demand exists.
When heating demand is terminated, a 5minute minimum off time delay is
initiated.
Second-stage heating is energized if the discharge air temperature is lower
than the setpoint of the heating staging temperature setpoint.
EDIT AND TEST AIRFLOW PER ZONE
Adjustment to all air flows can be made either at the System
Devices >
System screen
or using the Edit and Test Airflow per Zone screen .The
following procedure is to adjust individual zone airflow (CFM) for Blower
Circulation, Cooling and Heating airflow.
The
Maximum Airflow
for the selected mode on the left is displayed
at the top right of the screen.
The
Assigned Airflow
(the sum of the selected airflow for each zone)
is displayed at the top right of the screen.
NOTE - The airflow per zone (in red) must be selected and verified before
continuing.
1.
Select the desired radio button option -
Blower Circulation Airflow
,
Cooling Airflow
or
Heating Airflow
2.
Adjust airflow for a specific zone by pressing on the desired zone. Total
maximum airflow for all zones in this example is a combined1250 CFM.
Minimum CFM per zone is
50
and maximum is
1250
.
3.
Adjust airflow by using the up or down arrow to change the CFM.
4.
Touch
start
to begin operation for that specific zone.
5.
Repeat procedure to configure all applicable zones.
6.
Touch
save
.
7.
Touch
next
.
Continue to next section on testing and diagnostics.
Using the Tests / Diagnostics Features
TO SELECT TESTS TO RUN
Use the following procedure to run test for various heating and cooling stage
operations.
Blower
HP Heat - 1
st
Stage
HP Heat - 2
nd
Stage
Defrost Now
Cooling - 1
st
Stage
Cooling - 2
nd
Stage
Gas Heat - 1
st
Stage
Gas Heat - 2
nd
Stage
select all
select test to run
deselect all
skip tests
start
Only appears
if test item is
selected
Ö
1
2
3
4
5
Figure 18. Selecting Tests
1.
Select a specific tests (
1
) to run or use the
select all
(
2
) button to run
all configurations. Use the
deselect all
(
3
) button to un-check desired
test.
2.
Touch the
start
button (
4
) to run all selected tests or touch
skip tests
(
5
) to end the test procedure.
3.
After the tests are completed or you have selected skip test select the
exit button to end.
NOTE - Test mode lasts for 30 minutes (with the temperature updating every
30 seconds) except for the defrost test, which lasts 30 seconds. Tests
feature provides the technician time to manually verify the equipment
operation.
