55
Rev 2.1
Table 4.4 – Honeywell Sola Controller Identification Information
4-18 Central Heating Parameters
Table 4.5 displays Central Heat configuration parameters.
Refer to 5-1 CENTRAL HEAT RELATED CONFIGURATION for Central Heat parameter programming.
Parameter Comment Password
CH enable Disable or Enable Central Heating Loop None
CH demand source Source for Central Heat demand
Modulation sensor only: CH loop is controlled only by
selected sensor which provides pump demand, operating
temperature and burner demand.
STAT terminal: the STAT input in the On condition
creates pump demand and it also must be on for burner
demand to exist; if it is off there is no demand
LCI: the Recycle Interlock input in the On condition
creates pump demand and selected sensor provides
operating temperature and burner demand.
Installer
CH outdoor reset Disabled or enable CH outdoor reset None
CH has priority over LL This controls whether a local CH demand has priority
over the control asserted by the LL master, when enabled
as a slave.
Installer
CH setpoint source Local: Local setpoint is used as CH setpoint.
4-20mA: Remote 4-20mA signal is used as CH setpoint.
Installer
CH setpoint Setpoint for normal Central Heat modulation
32 °F to 240 °F (0 °C to 115 °C)
This setpoint is used when the time-of-day input is off
None
CH time of day setpoint Time Of Day setpoint
32 °F to 240 °F (0 °C to 115 °C)
This setpoint is used when the time-of-day input is on. If
the Outdoor Reset function is inactive then the setpoint is
used as-is. If the Outdoor Reset function is active then
this setpoint provides one coordinate for the shifted
outdoor reset curve.
None
CH off hysteresis Differential above setpoint when boiler is turned off
2 °F to 30 °F (1 °C to 16 °C)
None
CH on hysteresis Differential from setpoint when boiler is turned on
2 °F to 30 °F (1 °C to 16 °C)
None
CH 4 mA water temperature CH setpoint when 4 mA is received from BMS System Installer
CH 20 mA water temperature CH setpoint when 20 mA is received from BMS System Installer
CH modulation sensor Sensor for Central Heating modulation
Outlet sensor: Outlet sensor used as CH operating
sensor.
Inlet sensor: Inlet sensor used as CH operating sensor.
S5 sensor: S5 sensor (Header/Outdoor) used as CH
operating sensor.
Installer
CH P-gain Proportional term of PID
0-400
Installer
CH I-gain Integral term of PID
0-400
Installer
CH D-gain
Differential term of PID
0-400
Installer
CH hysteresis step time Time needed for one step of hysteresis shift, when the off
hysteresis threshold or on hysteresis threshold is shifted
due to a burner on or burn off event. Zero disables this
function.
Installer
Table 4.5 – Central Heat Configuration Parameters
4-19 Outdoor Reset Parameters
Table 4.6 displays Outdoor Reset configuration parameters.
Refer to 5-2 OUTDOOR RESET RELATED CONFIGURATION for Outdoor Reset parameter programming.
Parameter Comment Password
CH maximum outdoor
temperature
-40 °F to 266 °F (-40 °C to 130 °C) None
CH minimum outdoor
Temperature
-40 °F to 266 °F (-40 °C to 130 °C) None
Low water
temperature
32 °F to 240 °F (0 °C to 115 °C) None
CH minimum water
temperature
32 °F to 240 °F (0 °C to 115 °C) None
To Next Page
Loading...
Need help?
General