22
• C – 24VAC Common from the indoor unit 24VAC
transformer
• E – 1-Data: System Communications Line 1
• E – 2-Data: System Communications Line 2
Low Volt Fuse
• If required replace with 3 A automotive AT style
blade fuse
Low Pressure Control (LPC Input)
• ow-pressure control is factory installed
• ow pressure control is an automatic resetting device
High Pressure Control (HPC
Input)
• igh-pressure control is factory installed.
• igh pressure control is an automatic resetting device
Ambient Temperature Sensor
(included with all applications)
• Included with all applications
UP and Select Buttons
• U and Select buttons used to enter Test and ault
Recall Mode
Memory Card
• The memory card stores all unit information.
• The unit information is called model data
• The shared data is all the information needed for
proper unit operation.
EcoNet Communication System™
Control Wiring
• The coet ommunication System cosists of:
• Serial communicating or condensing unit equipped
with the EcoNet Communication System™
• Air handler or furnaces equipped with the coet
Communication System™
• coet ommunication thermostat
IMPORTANT: If the installed system does
not meet these requirements, the system must be wired
using traditional control wiriing, reference Section 11.7
Conventional 24VAC Thermostat Control Wiring.
The EcoNet Communication System™ requires four (4)
control wiring for unit operation:
R – 24VAC
C – 24VAC common
E1 – Data Wire 1
E2 – Data wire 2
NOTE: EcoNet Communication System™ requires
18 AWG thermostat wire.
If the low voltage control wiring is run in conduit with
the power supply, Class I insulation is required. Class II
insulation is required if run separate. Low voltage wiring
may be attached to the pigtails from the bottom of the
control box. Conduit can be run to the control box if
desired.
The EcoNet Communication System™ air handler or
EcoNet Communication System™furnace transformer
is equipped with a 24 volt, 50 VA transformer for proper
system operation. See the wiring diagram for reference.
Use Table 4 to size the 24-volt control wiring.
The four 18AWG low voltage control wires must be
installed from the thermostat to the indoor unit and from
indoor unit to the outdoor unit. The wire length between
the thermostat and indoor unit should not be greater
than 100 feet. The wire length between the indoor unit
and outdoor unit should not be greater than 125 feet.
EcoNet Communication System™
ICC Control Operation
Installation Verification
• 24 A power on must be present at the I for
it to operate
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