35
b. Select any value less than 50% for low stage
operation and any value greater than 50% for
high stage operation.
3.
Confirm thermostat heating call functions properly
with equipment.
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 humidistat closes on humidity rise or the
thermostat energizes this terminal when dehumidification is
required, set the control board “dHL” (Dehum Logic) menu
setting to “HI” using the push buttons or
CoolCloud
HVAC
phone application. If the humidistat opens on humidity
rise or the thermostat de-energizes this terminal when
dehumidification is required, set the “dHL” (Dehum Logic)
menu to “Lo” using the push buttons or
CoolCloud
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
EEf
error code and turning off the outdoor condensing unit.
If the AUX switch is detected to be in the closed position
for 30 seconds, normal operation resumes and the error
message is no longer displayed.
Push Button Menu
LEFT
CENTER
RIGHT
Figure 56
6.
Confirm thermostat heating and cooling calls
function properly with equipment.
Quick Start Guide for Gas Heat Only Setup (No
Outdoor Unit)
EXTREMELY IMPORTANT: The furnace only requires
a single W input for 2 stage gas heat control. Internal
algorithms will control staging of the gas furnace
automatically
1. Connect all necessary thermostat wires to the
thermostat connector on the furnace control as shown
in the following diagram.
R
W
DH/Y2
24 VAC
Thermostat
Indoor
Board Terminal
Connections
C
G
Optional
Optional
Dehum
R
W
C
G
Gas Heat Only
Figure 55
2.
Download the
CoolCloud
HVAC phone application
and use it to configure/test furnace operations.
NOTE: When new versions of Bluetooth
Communication Software and Furnace Control
Software are available, the phone application
notifies the user. Software updates are classified
as either optional or mandatory and installed by
using the phone application. Ensure all mandatory
software updates have been installed. Review
notes for optional software updates and install if
necessary.
Gas Furnace Testing
a. Two-stage Operation using the
CoolCloud
HVAC application:
a. Select the gas heat icon after entering the
furnace menus.
