Honeywell Local Operator Interface S7999B - Manual (Page 55)

55 65-0303—05
DHW enable Disable or Enable Domestic Hot
Water Loop
11 23
DHW
demand
switch
Sensor for Central Heat
demand:
DHW sensor only,
DHW sensor & Remote Stat,
DHW switch & inlet sensor, or
DHW switch & outlet sensor
DHW Priority
source
Which system has priority:
Disabled or
Heat Demand
DHW Priority
method
Boost during priority time
Drop after priority time
DHW
Modulation
sensor
DHW Sensor
Outlet Sensor
Inlet Sensor
Auto: DHW (S6) or Inlet Sensor
Auto: DHW (S6) or Outlet
Sensor
DHW
setpoint
-40 °F to 240 °F
(-40 °C to 115 °C)
DHW time of
day setpoint
Setpoint when Time Of Day
switch is on. -40 °F to 240 °F
(-40 °C to 115 °C)
DHW off
hysteresis
Differential above setpoint
when boiler is turned off. -40 °F
to 240 °F (-40 °C to 115 °C)
DHW on
hysteresis
Differential from setpoint when
boiler is turned on. 2 °F to
234 °F (-16 °C to 112 °C)
DHW priority
override time
___hour ___min ___sec
DHW
hysteresis
step time
Time between hysteresis step
changes: 0-600 seconds
(0=Disable hysteresis stepping)
DHW priority
vs CH
Which system has priority:
Central Heat over Domestic Hot
Water, or
Domestic Hot Water over
Central Heat
DHW priority
vs LL
Which system has priority:
Lead Lag over Domestic Hot
Water,
Domestic Hot Water over Lead
Lag
DHW P-gain Time between hysteresis step
changes: 0-400
DHW I-gain Time between hysteresis step
changes: 0-400
DHW D-gain Time between hysteresis step
changes: 0-400
DHW storage
enable
Enabled, Disabled 12 23
Storage time ___hour ___min ___sec
Setpoint
-40 °F to 266 °F
(-40 °C to 130 °C)
Off
hysteresis
-0 °F to 180 °F (-17 °C to 82 °C)
On
hysteresis
-0 °F to 180 °F (-17 °C to 82 °C)
Table 61. Configurable Parameters. (Continued)
Parameter Comment
Table
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Tap detect
degrees
-0 °F to 180 °F (-17 °C to 82 °C) 13 23
Tap detect on
recognition
time
___hour ___min ___sec
Tap detect on
threshold
-0 °F to 180 °F (-17 °C to 82 °C)
Tap detect
minimum on
time
___hour ___min ___sec
Tap stop
inlet-DHW
degrees
-0 °F to 180 °F (-17 °C to 82 °C)
Tap stop
outlet-Inlet
degrees
-0 °F to 180 °F (-17 °C to 82 °C)
Plate preheat
setpoint
-40 °F to 266 °F
(-40 °C to 130 °C)
Plate preheat
on
recognition
time
___hour ___min ___sec
Plate preheat
on hysteresis
-0 °F to 180 °F (-17 °C to 82 °C)
Plate preheat
off hysteresis
-0 °F to 180 °F (-17 °C to 82 °C)
Plate preheat
detect on
threshold
-0 °F to 180 °F (-17 °C to 82 °C)
Plate preheat
detect off
threshold
-0 °F to 180 °F (-17 °C to 82 °C)
Plate preheat
minimum on
time
___hour ___min ___sec
Plate preheat
delay after
tap
___hour ___min ___sec
Warm
Weather
Setpoint
Enable
Enabled, disabled 14 24
Warm
Weather
Setpoint
-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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