Slant/Fin CHS-399 - Manual (Page 18)

Slant Fin Corp.
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Controller and Display CHS Series
16
Figure 2-14 Lead Lag Configuration Main Menu Screen
Lead Lag Config – main menu screen, accessed by
selecting “Lead Lag Config” from the “Advanced
Setup” screen, lists the sub-menus specific to the Lead
Lag Configuration. Use the up and down (▲▼)
buttons to navigate the menu options; when the
desired option is highlighted select by pressing the
“OK” button.
2.4.3.1 Lead Lag Master Config
Figure 2-15 LL Master Configuration Screen
Lead Lag Master Config – sub-menu screen,
allows the installer to set parameters specific to the
boiler response and operation for Lead Lag CH2 (LL)
demands. Use the up and down (▲▼) buttons to
navigate the menu options; when the desired option is
highlighted select by pressing the “OK” button.
Master enable – must be set to “enable” in order for
the boiler to respond to a CH2 (LL) demand (only one
boiler in the cascade can have “Master enable” set to
“Enable”.
Setpoint source – The boiler LL setpoint can be
“Local”, i.e. the “Setpoint” set from the display, or “4-
20mA” set from an external source.
System Sensor – When using the optional system
(pipe) sensor; the controller automatically uses it as
the modulation sensor – reduce the “Setpoint”
accordingly.
Master enable
Setpoint source
Setpoint
Off hysteresis
On hysteresis
P gain
I
gain
Base load common rate
Disable
Local
150 o F
15 o F
15 o F
30
15
70%
Lead Lag Master Config
Lead Lag Master Config
Lead Lag Slave Config
Lead Lag Outdoor Reset
Lead Lag Config