Fine Tune Mode (Continued)
Symbol Description Used
In
Default Range User
Setting
Set Pump Override Time - (CSC
5352 Only) This setting should be
used with direct boiler
compensation or non-storage
Calorifier applications to dissipate
heat after demand.
Fine
Tune
Mode
15 0 to 59
Minutes
Set Low Outside Temperature
Frost Logic - (CSC 5352 Only)
Sets the action of the plant in
relation to low outside air
temperature. UK logic will start the
pump until the Hysteresis (+2°C)
has been cleared. European logic
will start the pump and control the
valve/boiler to the NSB setting until
the Hysteresis (+2°C) outside has
been cleared.
Fine
Tune
Mode
10 = UK
1 =
European
Low Space Temperature Setting
(CSC 5352 only if space sensor
fitted) Sets the temperature at
which point the heating will come on
in boost until the hysteresis (+2°C)
has been cleared. (If an adjustable
room sensor is used then this
setting must be set to –10°C to
remove frost protection. Failure to
do so may result in control
problems).
*or
If the INF setting = 3 then this
settings sets the max. Return
Temperature Ratio. A divisor of
100 is used for the max. Return
Ratio Setting, e.g. 83 = 0.83.
Fine
Tune
Mode
10 *or
83
–10 to
127°C
October, 03 CSC USER GUIDE
38 of 42
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