Install Instructions

36
Dehumidification
Dehumidification allows the furnace’s circulator blower to
operate at a reduced speed during a combined thermostat
call for cooling demand with a parallel humidistat. This lower
blower speed increases dehumidification of the conditioned
air as it passes through the indoor coil. The control board is
equipped with a 24 volt dehumidification input (DH) located
on the thermostat wiring connector. The terminal can be
configured to enable dehumidification when the input is
energized or de-energized. When using an external
dehumidistat, connect it between the R and DH terminals. If
the dehumidistat closes on humidity rise or the thermostat
energizes this terminal when dehumidification is required,
set the control board “” (Dehum Logic) menu setting to
“” using the push buttons or Cool Cloud HVAC phone
application. If the dehumidistat opens on humidity rise or
the thermostat de-energizes this terminal when
dehumidification is required, set the “” (Dehum Logic)
menu to “” using the push buttons or Cool Cloud HVAC
phone application.
Auxiliary Alarm Switch
The control is equipped with a 24VAC Aux Alarm to be used
for a condensate switch install (designated by CONDENSATE
IN/OUT on the control). By default, the connected AUX switch
is normally closed and opens when the water level in the
evaporator coil base pan reaches an undesirable level. The
control responds by displaying an  error code and turning
off the outdoor condensing unit. If the AUX switch is de-
tected to be in the closed position for 30 seconds, normal
operation resumes and the error message is no longer dis-
played.
PUSH BUTTON MENU



LEFT CENTER
RIGHT
Figure 56
The furnace includes three on-board push buttons allowing
users to navigate indoor and outdoor system menus. The
Right and Left buttons allow the user to scroll through the
main menus and to then scroll through available options
within specific menus. The Center button is used to enter
into a main menu and to then permanently select options
within those menus.
NOTE: After scrolling to the desired option within a menu,
that option may be flashing on the 7-segment displays. This
indicates the option has not been officially selected. Pressing
the Center button two times will select that option. The
first press will stop the flashing. The second will make the
selection official and return you to the main menu.
ACCESSORIES
Accessory Control (Humidifiers, Dehumidifiers, Ventilators)
If an external humidifier, dehumidifier or ventilator is in-
stalled, 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 continuous
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 ensure G signal is energized during accessory
operation.
Figure 57
4) Select the appropriate fan only airflow for the
accessory using the indoor unit push button menus
or the Cool Cloud HVAC phone application.
5) Using the thermostat, independently test each
accessory in addition to independently testing
continuous fan mode.