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S7999B, S7999C SOLA LOCAL OPERATOR INTERFACE
65-0303—05 22
Fig. 39. R7911 Steam Configuration.
Outdoor Reset Parameters
(R7910A Hydronic Control Only)
Table 10 displays Outdoor Reset configuration parameters.
Pressing the left or right arrow displays Lead Lag, which lists
the same parameters.
Fig. 40. Outdoor reset configuration.
Modulation Rate
Sensor
Local
P-gain Gain applied for the P portion of the
PID equation
0-400
I-gain Gain applied for the I portion of the
PID equation
0-400
D-gain Gain applied for the D portion of the
PID equation
0-400
Hysteresis step time Time between hysteresis step
changes: 0-600 seconds (0=Disable
hysteresis stepping)
Table 9. Steam Configuration Parameters
Parameter Comment
Steam enable Disable/enable steam feature
Steam demand
source
Sensor and LCI
Sensor and Remote Stat
Sensor and Stat Terminal
Sensor Only
Steam pressure
setpoint
Setpoint for normal modulation
Adjustable 0 to 15 or 0 to 150 (sensor
dependant)
Steam time of day
setpoint
Setpoint when TOD switch on
Adjustable 0 to 15 or 0 to 150 (sensor
dependant)
Minimum steam
pressure
Establishes setpoint for the 4ma. input.
Adjustable 0 to 15 or 0 to 150 (sensor
dependant)
Steam pressure off
hysteresis
Differential below setpoint when boiler
is turned off
Adjustable 0 to 15 or 0 to 150 (sensor
dependant)
Table 8. Central Heat Hydronic
Configuration Parameters. (Continued)
Parameter Comment
Steam pressure on
hysteresis
Differential from setpoint when boiler
is turned on.
Adjustable 0 to 15 or 0 to 150 (sensor
dependant)
Steam hysteresis
step time
Time between hysteresis changes 0 to
600 seconds (0=disable)
Steam P Gain Gain applied for the P portion of the
PID equation
0-400
Steam I Gain Gain applied for the I portion of the PID
Equation - 0-400
Steam D Gain Gain applied for the D portion of the
PID equation
0-400
Steam 4-20 ma
remote control
uses 4-20ma remote control function to
control either the setpoint or
modulation for Steam
Disable, setpoint, modulation
Table 10. Outdoor Reset Configuration Parameters.
Parameter Comment
Maximum outdoor
temperature
-40 °F to 266 °F (-40 °C to 130 °C)
Minimum outdoor
temperature
-40 °F to 266 °F (-40 °C to 130 °C)
Low water
temperature
-40 °F to 266 °F (-40 °C to 130 °C)
Minimum water
temperature
-40 °F to 266 °F (-40 °C to 130 °C)
Maximum off point -40 °F to 266 °F (-40 °C to 130 °C)
Table 9. Steam Configuration Parameters
Parameter Comment