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Controls the staging of the furnace. SYSTEM setting will allow
the Evolution Zone Control to determine furnace staging. LOW
will only run the low stage of furnace heat. LOW- -MED will run
the low and medium stages (2 stages of heat). MED will only run
the medium stage of heat. MED- -HIGH will run the medium and
high stages (2 stages of heat). HIGH will only run the high stage
of furnace heat.
G Terminal
This setup option selects desired operation when the R- -G circuit
changes state on the furnace control board depending on setup.
S DISABLED (Default)
S FAN - - turns on fan to selected fan speed when G terminal is
energized. See Fig. 25. This setting is used in conjunction with
fresh air supply products (e.g. fresh air/make- -up air dampers).
R
G
Fig. 25 - - G Input Wiring for Blower Operation
S FAN SPEED - - select Low, Med, High for all zones when G
terminal is energized
S SHUTDOWN - - shuts off fan and equipment when initiated.
This function is not intended for emergency fire shutdown. It
may be activated by a dry contact from an external device such
as a float switch or a relay. User selects whether the contact is
NC - - normally closed (default) or NO - - normally open. User
Interface displays SYSTEM MALFUNCTION on screen and
registers G terminal shutdown event in Last 10 System Events.
See Fig. 26.
R
G
Fig. 26 - - G Input Wiring for System Shutdown
with Evolutiont Control (Contact type selectable;
Normally Closed (default) or Normally Open)
High Stage Timer
Minimum amount of time low stage must operate before high stage
is activated. Ten to 60 minutes. 10 = default
A demand of 5_ or more will override the staging timer.
FE Fan Coil or
Variable Speed Furnace
A07114
FE Fan Coil or
Variable Speed Furnace
A07115
Furnace Airflow (Capacity) Limiting
The following settings allow the installer to restrict the furnace
within certain minimum and maximum airflows. These airflows
are converted to capacities.
determined by the equipment size. These settings are not the same
as the zoning airflow limits.
Min CFM (only appears with modulating furnaces)
Minimum CFM to run a modulating furnace. This will increase
the minimum operating capacity of the furnace. Default value is
the furnace air flow for the lowest heat capacity.
Maximum CFM (only appears with modulating furnaces)
Maximum CFM to run a modulating furnace. This will reduce the
operating capacity of the furnace. Default value is the furnace air
flow for the highest heat capacity.
Off Delay
S 90 seconds
S 120 seconds (default)
S 150 seconds
S 180 seconds
Amount of time the blower will continue to run after heating has
shut off.
Dehum Drain
Turns off the continuous fan at the end of cooling for five minutes,
in order to drain the indoor coil of water. The fan will only be
turned off if a dehumidify demand existed at the start of or during
the cooling cycle. Default is enabled.
Altitude
S US 0 - - 2000 (default)
S US 2001 - - 3000
S CA 2001 - - 4500 (for Canada only)
S US 3001 - - 4000
S US 4001 - - 5000
S US 5001 - - 6000
S US 6001 - - 7000
S US 7001 - - 8000
S US 8001 - - 9000
S US 9001 - - 10000
This setting will adjust the furnace's airflow to compensate for
altitude. Altitude adjustment is not available with older furnaces.
Please see furnace instructions for further details.
Setup - - Fan Coil
Heat Pump Heating:
S COMFORT (default) Heat Pump airflow is varied depending on
outdoor temperature to maximize comfort.
S EFF 325 - - fixed airflow used to achieve specified ratings - - no
dehumidification airflow reduction. This is nominally 325
CFM/ton, but will vary if a 2- -stage outdoor unit is used.
S EFF 350 - - fixed airflow used to achieve specified ratings - - no
dehumidification airflow reduction. This is nominally 350
CFM/ton, but will vary if a 2- -stage outdoor unit is used.
S MAXIMUM - - 400 CFM/ton.
Heat Pump Cooling Airflow:
S COMFORT (default) Cooling airflow is varied depending on
humidity and temperature demand settings. This selection
enables the full dehumidify and comfort capabilities of the
system. When COMFORT is not selected, the unit will not run
reduced airflows for dehumidification. Heat Pump airflow is
varied depending on outdoor temperature to maximize comfort.
S EFF 325 and EFF 350 - - fixed airflow used to achieve specified
10
The Min and Max limits are
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