Slant_fin CHS-399 User Manual download pdf (Page 12)

Slant Fin Corp. │Controller and Display CHS Series

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

Outlet

Local

CH Config

Outdoor Reset Config

Warm weather shutdown

CH Config

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Slant_fin CHS-399 User Manual Page 12

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