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21 Accessory Control (Humidifiers,
Dehumidifiers, Ventilators)
If an external humidifier, dehumidifier or ventilator is
installed, it may require airflow from the HVAC system to
function properly.
1. Make sure the installed 24VAC thermostat is capable of
controlling the accessory or accessories.
2. Connect the appropriate accessory control wires to the
accessory devices from the thermostat (see thermostat
manual for connection and setup instructions).
3. If the thermostat is capable of providing a continu-
ous fan call (G signal) during accessory operation:
Make sure to connect the thermostat G terminal to the
G terminal on the indoor unit. Setup thermostat to en-
sure G signal is energized during accessory operation.
4. Select the appropriate fan only airflow for the accesso-
ry using the indoor unit push button menus or the Cool
Cloud HVAC phone application.
5. Using the thermostat, independently test each acces-
sory in addition to the independently testing continuous
fan mode.
Figure 21
23 Ramping Profiles
The variable-speed circulator offers four different ramping
profiles. These profiles may be used to enhance cooling
performance and increase comfort level. Select the desired
ramping profile using the Cool Cloud phone application or
the push button menus.
• Profile A provides only an OFF delay of one (1) minute at
100% of the cooling demand airflow.
100% CFM
OFF
• 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 air-
flow.
50% CFM
OFF
1/2 min
• Profile C ramps up to 82% of the full cooling demand air-
flow and operates there for approximately 7 1/2 minutes.
The motor then steps up to the full demand airflow. Pro-
file C also has a one (1) minute 100% OFF delay.
OFF
• Profile D ramps up to 50% of the demand for 1/2 minute,
then ramps to 82% 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.
OFF
19
100% CFM
1 min
100% CFM
100% CFM
1 min
100% CFM
Figure 22
OFF
OFF
OFF
OFF
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