Blower Heat Off Delay Timings; Overview - Intertek MVM97 Series Installation Instructions Manual

• Profile A provides only an OFF delay of one (1) minute at 100%
of the cooling demand airflow.
• Profile B ramps up to full cooling demand airflow by first
stepping up to 50% of the full demand for 30 seconds. The
motor then ramps to 100% of the required airflow. A one (1)
minute OFF delay at 100% of the cooling airflow is provided.
• 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 H O D
LOWER EAT FF ELAY
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 N ™ S
OMFORT ET 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).
T
IMINGS
100% CFM
OFF
100% CFM
50% CFM
OFF
1/2 min
OFF
OFF
Figure 52D
Airflow Tables
100% CFM
1 min
Figure 52A
100% CFM
1 min
Figure 52B
100% CFM
Figure 52C
OFF
OFF
OFF
OFF
45