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Smart Hub Parameters
Parameter Description
Balance Point Control
If system is set up as dual fuel or heat pump with electric heat and a outdoor
temperature sensor connected to Smart Hub, the low and high balance point
settings will appear. The balance points feature requires that a sensed outdoor
temperature is provided to the thermostat. The outdoor ambient temperature
can be read from a eld-installed outdoor temperature sensor (X2658).
When balance point control is ENABLED, the low and high balance point elds
will be turned “ON” and show RED. A message will be displayed asking you
to review the low and high balance point settings and save all RED settings.
Highlighted elds in RED must be saved to allow exit from that screen.
Options are enabled or disabled. Default is disabled. When enabled, both low
and high balance points can be set.
High Balance Point
This setting is used to prevent the furnace or electric heat from heating the
structure. (Alert 19 - Minor - Notication only - The outdoor temperature is
higher than the level where the furnace or electric heat is programmed to heat
the home.)
Range is -17 to 75°F (-27.22 to 23.89°C). Default is 50°F (10.0°C). Adjustments
are in increments of 1°F (0.56°C).
Low Balance Point
Setting used to prevent the heat pump from heating the structure. (Alert 18 -
Minor - Notication only - The outdoor temperature is below the level where the
heat pump is programmed to heat the home).
Range is -20 to 72°F (-28.89 to 22.22°C). Default is 25°F (-3.89°C). Adjustments
are in increments of 1°F (0.56°C).
Cooling Mode
Options are Normal and Comfort. Default is Normal.
When changing to Comfort Mode, several parameters are
automatically modied for optimal system operations. The
changed parameters are listed on the screen when set to
Comfort.
Normal - This setting cools the home to the desired
temperature setting. Once second-stage is activated by
timer or differential, it will not stage down to rst-stage until
the next cooling cycle demand.
Comfort - This is when the system could automatically
stage up or down based on the current load demand.
Smart Hub Parameters
Parameter Description
CFA Cooling
Discomfort
Threshold
Default is ON. The purpose of this algorithm when set
to ON is to detect systems with faults which are causing
measurable loss of comfort and thus, need repair/service
intervention.
The algorithm monitors the duration in which the indoor
temperature is above the cool set point or below the heat
set point and does not approach the set-point. When an
issue is detected alarm 901 is activated.
Electric Heat
Stages During
Defrost
Can increase or decrease the number of electric elements
to come on during a call for defrost. Thermostat will have a
demand for heat.)
Range is 0 to 5 electric heat stages. Default is 2.
Adjustments are in increments of 1.
Equipment Name
A unique name can be assigned to this component. Name
can be up to 29 characters. Name can consist of letters,
numbers, special characters and spaces. Default name is
Subnet Controller.
Heat Cool Stages Locked In
Heat Cool (H/C) Stages Lock in default is disabled (heat/cool stages are turned
off separately). If changed to Enabled, heat/cool stages are turned off together.
For non-variable speed systems only.
H/C
Stages
Locked =
Enabled
H/C
Stages
Locked =
Disabled
POINTS:
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
2nd stage
ON
2nd stage
OFF
1st stage
ON
1st stage
OFF
SP -1.5 SP -1.0 SP -0.5
SP
SP +1.5SP +1.0 0.2+ PS5.0+ PS
Stg1 Differential
Stg2 Differential
Stg2 Differential
Stg1 Differential
Cooling (1- and 2-Stages)
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