Slant/Fin CHS-399 - Manual (Page 12)

Slant Fin Corp.
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Controller and Display CHS Series
10
2.4.1 CH Config
Figure 2-8 Central Heat Configuration Main Menu Screen
CH Config – main menu screen, accessed by
selecting “CH Config” from the “Advanced Setup”
screen, lists the sub-menus specific to the Central Heat
Configuration. Use the up and down (▲▼) buttons to
navigate the menu options; when the desired option is
highlighted select by pressing the “OK” button.
The settings under “CH Config” are specific to boiler
operation given a local central heat demand, i.e. CH1
heat input.
2.4.1.1 CH Config
– CH Config
Figure 2-9 Central Heat Configuration Sub-menu Screen
CH Config – sub-menu screen, allows the installer to
set parameters specific to the boiler response and
operation for local (i.e. non Lead Lag) Central Heat
demands. Use the up and down (▲▼) buttons to
navigate the menu options; when the desired option is
highlighted select by pressing the “OK” button.
Demand switch - Central heat demand can be
initiated by a contact closure to CH1, “LCI”, or by
boiler temperature, “Sensor only”.
Setpoint source – The boiler setpoint can be “Local”,
i.e. the “CH setpoint” set from the display, or “4-
20mA” set from an external source.
Modulation sensor – With the “Setpoint source” set
to “Local”, the control can be set to use either the
“Outlet”, “Inlet” or “S10” (pipe) sensor for regulation
of burner modulation.
Mod rate source – The burner modulation can either
be controlled by the boiler control, “Local”, or by an
external source, “4-20mA”.
Demand switch
Setpoint source
CH setpoint
Off hystersis
On hysteresis
Modulation sensor
Mod rate source
CH Config
LCI
Local
180 o F
10 o F
20 o F
Outlet
Local
CH Config
Outdoor Reset Config
Warm weather shutdown
CH Config