Honeywell Local Operator Interface S7999B - Manual (Page 54)

S7999B, S7999C SOLA LOCAL OPERATOR INTERFACE
65-0303—05 54
CH enable Disable or Enable Central
Heating Loop
8 21
CH demand
switch
Sensor for Central Heat
demand:
Sensor only
Sensor & STAT terminal
Sensor & Remote Stat
LCI & Sensor
CH Outdoor
reset
Enabled
Disabled
CH has
priority over
Lead Lag
Yes, No, Cancel
CH Setpoint
source
Local
S2 (J8-6) 4-20mA
CH Setpoint Setpoint for normal Central
Heat modulation:
-40 °F to 266 °F
(-40 °C to 130 °C)
CH time of
day setpoint
Setpoint when Time Of Day
switch is on. -40 °F to 266 °F
(-40 °C to 130 °C)
CH off
hysteresis
Differential above setpoint
when boiler is turned off. -40 °F
to 266 °F (-40 °C to 130 °C)
CH on
hysteresis
Differential from setpoint when
boiler is turned on.-40 °F to 266
°F (-40 °C to 130 °C)
4 mA water
temperature
-40 °F to 266 °F
(-40 °C to 130 °C)
20 mA water
temperature
-40 °F to 266 °F
(-40 °C to 130 °C)
Modulation
sensor
Outlet sensor, Inlet sensor, S5
(J8-11)
Modulation
Rate Sensor
Local
CH P-gain Time between hysteresis step
changes: 0-400
CH I-gain Time between hysteresis step
changes: 0-400
CH D-gain Time between hysteresis step
changes: 0-400
Hysteresis
step time
Time between hysteresis step
changes: 0-600 seconds
(0=Disable hysteresis stepping)
Table 61. Configurable Parameters. (Continued)
Parameter Comment
Table
#
Page
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Steam
enable
Disable/enable steam feature 9 22
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)
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
CH maximum
outdoor
temperature
-40 °F to 266 °F
(-40 °C to 130 °C)
10 22
CH 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 61. Configurable Parameters. (Continued)
Parameter Comment
Table
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Page
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