SYSTEM OPERATION
12
1.1 440 2.4 960 3.7 1480 5 2000
1.2 480 2.5 1000 3.8 1520 5.1 2040
1.3 520 2.6 1040 3.9 1560 5.2 2080
1.4 560 2.7 1080 4 1600 5.3 2120
1.5 600 2.8 1120 4.1 1640 5.4 2160
1.6 640 2.9 1160 4.2 1680 5.5 2200
1.7 680 3 1200 4.3 1720 5.6 2240
1.8 720 3.1 1240 4.4 1760 5.7 2280
1.9 760 3.2 1280 4.5 1800 5.8 2320
2 800 3.3 1320 4.6 1840 5.9 2360
2.1 840 3.4 1360 4.7 1880 6 2400
2.2 880 3.5 1400 4.8 1920
The multi-circulator blower also offers several custom
ON/ OFF ramping proles. These proles may be used to
enhance cooling performance and increase comfort level.
The ramping proles are selected using the Cooling Airow
Prole menu (if push buttons are used, use the CAP menu
to select the desired prole). Refer to the bullet points below
for a description of each ramping prole.
OFF
100% CFM
Cooling Demand
100% CFM
1 min
OFF
• provides only an OFF delay of one (1) minute at 100% of the cooling demand Profile A(1)
Cooling Demand
50% CFM
1/2 min
100% CFM
100% CFM
1 min
OFF
OFF
• 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 B(2)
1 min
100% CFM85% CFM
7 1/2 min
Cooling Demand
100% CFM
OFF
OFF
• 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 C(3)
85% CFM
7 1/2 min
100% CFM
50% CFM
1/2 min
50% CFM
Cooling Demand
1/2 min
OFF
OFF
• 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.
Profile D(4 or 5)
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 if heatmode is running.
If cooling mode is running the same airow adjustment will
decrease the outlet air temperature delivered to the home.
The speeds available allow the blower performance to be
optimized for the particular homeowner’s needs.
The Furnace functions with any thermostat that can be
congured to provide 24VAC on Y for cooling calls and 24VAC
on W for Heating calls. Based on these simple inputs, internal
algorithms will decide how to control two stages of furnace
heat in addition to any single or multi stage outdoor heating /
cooling operation (the algorithms will handle dual fuel multi-
stage systems as well). The thermostat must be setup to
provide only a Y call when cooling is required and only a W
call when heating is required. This is generally accomplished
by selecting single stage heat / single stage cool mode during
setup (if setup is required). Do not set thermostat to heat
pump operation as system will not operate properly.
Note: The only exception is if a single stage non-communicating
Heat Pump is connected to the furnace. Refer to Non-
Communicating Single Stage Heat Pump diagram for details.
Thermostat connections to the control board are R, C, G,
W, Y & Dehum. Provided the thermostat does not require a
common wire as few as two thermostat wires may be used
for heat only (R and W) or cool only (R and Y) systems. A
minimum three thermostat wires may be used for heating
and cooling systems (R, W and Y). Refer to thermostat wiring
diagrams below for your system conguration.
Low voltage connections can be made through either the right
or left side panel of the furnace. Thermostat wiring entrance
holes are located in the blower compartment.
To Next Page
Loading...
