46
•
Profile C
ramps up to 85% of the full cooling demand airflow
and operates there for approximately 7 1/2 minutes. The
motor then steps up to the full demand airflow. Profile C also
has a one (1) minute 100% OFF delay.
•
Profile D
ramps up to 50% of the demand for 1/2 minute,
then ramps to 85% of the full cooling demand airflow and
operates there for approximately 7 1/2 minutes. The motor
then steps up to the full demand airflow. Profile D has a 1/
2 minute at 50% airflow OFF delay.
7. Select the heating speed for your model from the heating
speed table in this manual. The “adjust” setting (already established by the cooling speed selection) determines which set
of speeds are available. The selected speed must provide a temperature rise within the rise range listed with the particular
model.
8. Select the desired “heating” speed tap by positioning switches 3 and 4 appropriately. Refer to the airflow table. Verify CFM
by noting the number displayed on the dual 7-segment LED display.
In general, lower heating speeds will reduce electrical consumption, lower operating sound levels of the blower, and increase the outlet
air temperature delivered to the home. The speeds available allow the blower performance to be optimized for the particular needs
of the installation.
B
LOWER
H
EAT
O
FF
D
ELAY
T
IMINGS
The integrated control module provides a selectable heat off delay function. The heat off delay period may be set to 90, 120, 150, 180
seconds using the DIP switches or jumper provided on the control module. The delay is factory shipped at 150 seconds but may be
changed to suit the installation requirements and/or homeowner preference. Refer to the DIP switch chart in the back section of
this manual for switch positions and corresponding delay times.
C
OMFORT
N
ET
™ S
YSTEM
O
VERVIEW
NOTE:
DIP switch #13
MUST
be set to match thermostat type. To use the CTK01 communicating thermostat, DIP switch #13
must be set to ON position. This is also the correct setting for a non-communicating 2-stage thermostat. To use the CTK02**,
CTK03** or CTK04** modulating thermostat, check to make sure DIP switch #13 is in the OFF position (factory position). This
is also the correct position when using a non-communicating single stage thermostat.
The ComfortNet system is a system that includes a ComfortNet compatible furnace and air conditioner or heat pump with a CTK0*
thermostat. A valid ComfortNet system could also be a compatible furnace, CTK0* thermostat and non-compatible, single stage air
conditioner. Any other system configurations are considered invalid ComfortNet systems and must be connected as a traditional (or
non-communicating) system (
see Electrical Connections
for wiring connections).
A ComfortNet heating/air conditioning system differs from a non-communicating/traditional system in the manner in which the
indoor unit, outdoor unit and thermostat interact with one another. In a traditional system, the thermostat sends commands to the
indoor and outdoor units via analog 24 VAC signals. It is a one-way communication path in that the indoor and outdoor units typically
do not return information to the thermostat.
OFF
OFF
Figure 52D
Airflow Tables
100% CFM
OFF
OFF
Figure 52C
