Adjusting Equipment Parameters After Initial Installer Setup; Stage Delay And Differential Settings (Installer Settings) - Lennox iComfort Wi-Fi Setup Manual

ADJUSTING EQUIPMENT PARAMETERS AFTER INITIAL INSTALLER SETUP

1. From the Home Screen, press and
hold Lennox (see figure 34) until the
warning screen appears. Press yes to
continue
2. Press equipment to change equip­
ment parameters and edit details of
devices in the system without having to
re-run the setup program.
3. Select the equipment button to con­
tinue. The system devices screen will
open. Use the arrows to select a
device and press edit.
4. Use the arrows to highlight a setting and then press edit (figure
37A). In the example, the low heating airflow is changed from the
default (400) to 325 (figure 37B). After changing, press save. (note
the current value has changed; figure 37C). Some changes may
affect other settings and, if so, those affected will appear in red and
require changing/saving to clear the red settings.
5. When finished, press back; equipment parameters screen then
press next. "Select tests to run screen appears"; either run tests
as before or press skip tests.
Stage Delay and Differential Settings
(Installer settings)
First-Stage Differential — First Stage differential is used in
all thermostats. The default setting is 1.0°F with an optional
setting range between 0.5° and 3.0°F in 0.5°F increments.
From the equipment button, use the arrows to select
First-Stage Differential. Press edit. Use the up/down arrows
to adjust to the desired setting and press save.
Second-Stage Differential (where applicable) — The default
is 1.0°F but can be programmed between 0.5° and 8.0°F in
0.5°F increments.
Third-Stage through Sixth-Stage Differential (where
applicable) — The default is 0.5°F but can be programmed
between 0.5°F and 8.0°F in 0.5°F increments.
NOTE - Each stage differential is based on the previous stage
differential endpoint. For example, in cooling mode, if stage 1
differential is set to 1.0ºF, then the system comes on 0.5ºF
above set point and the second differential starts at the 0.5ºF
stage 1 endpoint and extends to second-stage differential
endpoint.
NOTE - In normal operation, the end of the cooling demand is
at the set point -0.5ºF and the end of the heating demand is at
the set point +0.5ºF.
Staged Delay Timers — The factory default is set to Enabled.
When enabled, all stage delay timers (stages 2 through 6) are
enabled and will serve to bring on additional stage(s) of cooling
or heating on a timed basis (default 20 minutes) in cases when
507343-01
setup
tests equipment
system devices
System
Furnace
Thermostat
2 Stage HP Unit
Zoning Control
9:39 am Aug 15, 2012
Figure 37. Edit Equipment Details
the previous stage of heating or cooling will not raise or lower
the room temperature to the set point in a given time. When
disabled is selected all stage delay timers are disabled. This
means stages are changed based on the temperature and not
their timer delays.
NOTE — The 2nd Stage Delay Timer (when Staged Delay
Timers is Enabled) is used for both HEATING and COOLING.
However, if the system has a variable capacity furnace, 2nd
Stage Delay Timer will only be used for COOLING (not for
heating, as the variable capacity algorithm ignores delay
timers).
Second through sixth Stage Delay timer (where applicable)
— If Staged Delay Timers are enabled, the default delay is 20
minutes but can be programmed from 5 to 120 minutes in
5-minute increments. If first stage fails to advance the ambient
temperature toward the set point by 1.0°F in the programmed
delay time, then the second stage is activated.
Heat Cool Stages Locked In — The factory default setting is
disabled (heat/cool stages are turned off separately). If
changed to enabled, heat/cool stages are turned off together.
Scroll to Heat Cool Stages Locked In; press edit. Use arrows
to select between Disabled or Enabled. Press save.
Lock-In Second Stage HP by Outdoor Temperature —
default Off (heat pump second-stage operates normally). Use
this setting to lock in the second-stage compressor when the
outdoor temperature is at or less than the LOCK TEMP set
point. Scroll to Lock In Second-Stage HP by Outdoor
Temperature; press edit. Use arrows to select a temperature
between 40ºF and 55ºF. Press save.
Page 30
To adjust a setting,
about
highlight it, then press
Edit
resetAll
System
edit
System
Equipment Name
Heating Airflow Control Type
Low Heating Airflow
High Heating Airflow
Low Heating Airflow
High Cooling Airflow
Range is 325 to 450
Airflow Profile - Cooling
Default is 400, inc: 25
High HP Airflow
set-to
Continuous Indoor Blower Airflow
325
Heating Indoor Blower OFF Delay
save
9:39 am Aug 15, 2012
reset All
Low Heating Airflow
current value:
back
325
edit
Reset All
back
cancel