Fine Tune Mode
(Continued)
Symbol Description
Used
In
Default Range
User
Settings
SVT
Select SVT (CSC 5252 Only)
Selects the digital input as SVT or
Set-up. There are two
connection/operation options for the
SVT/CSC.
BOOST (Valve Override Open, set
to 1):
SVT terminals 5 and 4 are
wired to CSC terminals 7 and 8
respectively.
BOOST (set value increase, set to
0):
SVT terminals 5 and 4 are wired
to CSC terminals 7 and 8
respectively.
Fine
Tune
Mode
0
Set-up
0 = Set-up
1 = SVT
Set Sensor Type
The sensor type is normally
automatically detected when the
CSC is first powered up but it can
be manually set if required.
Fine
Tune
Mode
5
1 or 5
Sensor Averaging
This tells the CSC how many Room
Sensors are connected to it.
Averaging.
Fine
Tune
Mode
1
1 to 4
Set Boiler Hysteresis
Sets the number of
°
C the actual
flow temperature must be above the
calculated flow temperature before
the boiler is switched OFF by the
CSC.
Fine
Tune
Mode
6
0 to 255K
INF
Room Influence Mode Select
(only if Space Sensor fitted)
If
space sensor is fitted then the flow
temperature can be adjusted in
relation to the space temperature.
The ratio for this is 3:1. The use of
this feature can increase and/or
decrease the flow temperature
depending on the setting and Time
Clock. Using a value of 3 should
only be used when the max. return
is used in Scandinavian
Applications. This allows the
sensor input to be used for another
purpose.
Fine
Tune
Mode
0
0 = No
Room Inf.
1 = Day
(+/-
3
°
C/
°
C) &
NSB
(–3
°
C/
°
C)
2 = Day
(–3
°
C/
°
C)
& NSB
(–3
°
C/
°
C)
3 = District
Htg
CSC USER GUIDE
October, 03
37 of 42
