User Manual

CHS Series Controller and Display │Slant Fin Corp.
25
2.4.4.5 System Config
Figure 2-23 System Configuration Screen
System Config – sub-menu screen allows the
operator to set the temperature units (ºF/ºC) and the
burner “Anti short-cycle time”. Use the up and down
(▲▼) buttons to navigate the menu options; when
the desired option is highlighted select by pressing the
“OK” button.
Anti short-cycle time - This
feature does not apply to
Domestic Hot Water demand or recycle events.
The Anti short-cycle feature is designed to prevent
excessive burner on/off cycling due to short or rapid
thermostat cycles, low heating load, etc.
Table 2-17 System Configuration Parameters
Parameter
Description
Factory Settings
Temperature
units
Select which temperature units to display:
 Fahrenheit
 Celsius
Fahrenheit
Anti short-
cycle time *
Whenever the burner is turned off due to no demand the anti-short-cycle timer is
started and the burner remains in a Standby Delay condition waiting for this time to
expire.
Range 0 to 60 minutes (1 hour).
5 min
Burner off
inhibit time *
If demand changes from a high-temperature setpoint to a lower setpoint (e.g. from
DHW to CH), water temperature may exceed the burner off point for the new
demand. This value determines how long the control will ignore the burner off
hysteresis or threshold before shutting down the burner, in order to reduce burner
cycling. Range 0 to 30 minutes.
10 sec
General
Config
Allows for advanced parameter configuration modifications – only use when
instructed by Slant/Fin technical support.
N/A
* Password protected
Temperature units
Anti short-cycle time
Burner off inhibit time
General Config
Fahrenheit
5 min
10 sec
System Config