Honeywell S7999D SOLA User Manual page 43

Table 60. Configurable Parameters. (Continued)
Parameter Comment
Steam Disable/enable steam feature
enable
Steam Sensor and LCI
demand Sensor and Remote Stat
source Sensor and Stat Terminal
Sensor Only
Steam Setpoint for normal modulation
pressure Adjustable 0 to 15 or 0 to 150
setpoint (sensor dependant)
Steam time Setpoint when TOD switch on
of day Adjustable 0 to 15 or 0 to 150
setpoint (sensor dependant)
Minimum Establishes setpoint for the
steam 4ma. input.
pressure Adjustable 0 to 15 or 0 to 150
(sensor dependant)
Steam Differential below setpoint when
pressure off boiler is turned off
hysteresis Adjustable 0 to 15 or 0 to 150
(sensor dependant)
Steam Differential from setpoint when
pressure on boiler
hysteresis is turned on.
Adjustable 0 to 15 or 0 to 150
(sensor dependant)
Steam Time between hysteresis
hysteresis changes 0 to 600 seconds
step time (0=disable)
Steam P Gain applied for the P portion of
Gain the PID equation
0-400
Steam I Gain Gain applied for the I portion of
the PID Equation - 0-400
Steam D Gain applied for the D portion of
Gain the PID equation
0-400
Steam 4-20 uses 4-20ma remote control
ma remote function to control either the
control setpoint or modulation for
Steam
Disable, setpoint, modulation
CH maximum -40 °F to 266 °F
outdoor (-40 °C to 130 °C)
temperature
CH minimum -40 °F to 266 °F
outdoor (-40 °C to 130 °C)
temperature
Low water -40 °F to 266 °F
temperature (-40 °C to 130 °C)
Minimum -40 °F to 266 °F
water (-40 °C to 130 °C)
temperature
Maximum off -40 °F to 266 °F
point (-40 °C to 130 °C)
Table 60. Configurable Parameters. (Continued)
Table Page
# # Parameter
8 16 DHW enable Disable or Enable Domestic Hot
DHW
demand
switch
DHW Priority
source
DHW Priority
method
DHW
Modulation
sensor
DHW
setpoint
DHW time of
day setpoint
DHW off
hysteresis
DHW on
hysteresis
DHW priority
override time
DHW
hysteresis
step time
DHW priority
vs CH
DHW priority
9 16
vs LL
DHW P-gain Time between hysteresis step
DHW I-gain
DHW D-gain Time between hysteresis step
43
Comment
Water Loop
Sensor for Central Heat
demand:
DHW sensor only,
DHW sensor & Remote Stat,
DHW switch & inlet sensor, or
DHW switch & outlet sensor
Which system has priority:
Disabled or
Heat Demand
Boost during priority time
Drop after priority time
DHW Sensor
Outlet Sensor
Inlet Sensor
Auto: DHW (S6) or Inlet Sensor
Auto: DHW (S6) or Outlet
Sensor
-40 °F to 240 °F
(-40 °C to 115 °C)
Setpoint when Time Of Day
switch is on. -40 °F to 240 °F
(-40 °C to 115 °C)
Differential above setpoint
when boiler is turned off. -40 °F
to 240 °F (-40 °C to 115 °C)
Differential from setpoint when
boiler is turned on. 2 °F to
234 °F (-16 °C to 112 °C)
___hour ___min ___sec
Time between hysteresis step
changes: 0-600 seconds
(0=Disable hysteresis stepping)
Which system has priority:
Central Heat over Domestic Hot
Water, or
Domestic Hot Water over
Central Heat
Which system has priority:
Lead Lag over Domestic Hot
Water,
Domestic Hot Water over Lead
Lag
changes: 0-400
Time between hysteresis step
changes: 0-400
changes: 0-400
Table Page
# #
10 17
65-0315—02