26
Ramping Profiles
The variable-speed circulator offers four different
ramping profiles. Use these profiles to enhance cooling
performance and increase comfort level. Select ramping
profiles on the user menu.
• Profile A
(1) provides only an OFF delay of one (1)
minute at 100% of the cooling demand airflow.
OFF
100% CFM
100% CFM
1 min
OFF
Figure 40
•
Profile B
(2) ramps up to full cooling demand airflow
by first stepping up to 50% of the total demand for
30 seconds. The motor then ramps to 100% of the
required airflow. The motor provides a one-minute,
post-cycle OFF delay at 100% airflow.
50% CFM
1/2 min
100% CFM
100% CFM
1 min
OFF
OFF
Figure 41
•
Profile C
(3) ramps up to 85% of the full cooling
demand airflow and operates for approximately 7
1/2 minutes. The motor then steps up to the 100%
demand airflow. The motor provides a one-minute,
post-cycle OFF delay at 100% airflow.
100% CFM
OFF
OFF
Figure 42
• Profile D
(4) ramps up to 50% demand for 1/2 minute,
then ramps to 85% of the full cooling demand for 7
1/2 minutes. Once elapsed, the motor runs at 100%
capacity for the remainder of the cycle, and provides a
post-cycle OFF delay at 50% airflow.
OFF
OFF
Figure 43
115 Volt Line Connection or Electronic Air
Cleaner
WARNING
HIGH VOLTAGE
To avoid personal injury or death due to
electrical shock, disconnect electrical power
before servicing or changing any electrical
wiring.
The accessory load specifications are as follows:
EAC
1.0 AMP maximum at 120 VAC
Table 6
The furnace integrated control module is equipped with
a line voltage accessory terminal for controlling power to
an optional, field-supplied electronic air cleaner or any
device required to operate in parallel with a circulating fan
demand.
To connect an electronic air cleaner using the line voltage
EAC terminal:
• Turn OFF power to the furnace before installing any
accessories.
• Follow the air cleaner manufacturers’ instructions
for locating, mounting, grounding, and controlling
accessories. Utilize 1/4” quick connect terminals to
make accessory wiring connections to the furnace
integrated control module.
• Connect the hot terminal utilized for accessory
operation to the EAC terminal and the neutral side
of power to NEUTRAL bus on the integrated furnace
control or the neutral connection in the furnace
junction box.
•
All field wiring must conform to applicable codes.
• If necessary for the installer to supply additional line
voltage wiring to the inside of the furnace, wiring
must conform to all local codes and have a minimum
temperature rating of 105°C.
• All line voltage wire splices must be inside the furnace
cabinet.
STARTUP PROCEDURE & ADJUSTMENT
Furnace must have a 115 VAC power supply properly
connected and grounded. Correct operation is dependent
on proper wiring polarity. In addition to the following start-
up and adjustment items, refer to further information in
Operational Checks
section.
