Fondital KBS 24 - 32, Инструкция по установке, эксплуатации и обслуживанию

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Instructions for the installer
3.16 Available head
Boiler circulation pump
The boiler is equipped with a high-efficiency circulation pump with variable speed.
Circulation pump speed is automatically managed by the electronics, according to the settings of boiler parameters.
It is possible to choose between two pump working modes:
1 1 “Constant ΔT” operation
In the constant ΔT operating mode, circulation pump speed changes automatically to keep system delivery and return ΔT fixed at a value set
in the boiler "super technical" parameters.
2 2 “Fixed speed” operation
In the fixed speed operating mode, circulation pump speed remains constant at the value set in the boiler "super technical" parameters.
During DHW phase, circulation pump works at a fixed speed set in the boiler parameters.
WARNING
Circulation pump is set to constant ΔT operating mode during production.
For a correct operation of the boiler, it is recommended not to change factory setting.
Should it be necessary to change circulation pump settings, contact a Service Centre.
Zone circulation pumps (KBS V - KBS Z)
The boiler is equipped with a high-efficiency circulation pump with variable speed.
It is possible to choose between two pump working modes:
1 “Variable head” operation
Turn circulation pump selector switch on the left side, to select variable head operating mode.
Selector switch position sets the desired maximum head.
In the variable head operating mode, circulation pump speed automatically changes when system flow resistance varies, keeping head
between the value set with the selector switch and half the set value (in accordance with circulation pump work field).
2 2 “Fixed speed” operation (Min.- I - II - III)
Turn selector switch to the right, to select fixed speed operating mode.
Selector switch position sets the desired speed.
"Min." position indicates the minimum speed that can be set, "III" position indicates the maximum speed that can be set.
In fixed speed operating mode, circulation pump speed remains constant when system flow resistance varies (in accordance with circulation
pump work field).
WARNING
Circulation pump is set to fixed speed (speed III) operating mode during production.
For a correct operation of the boiler, it is recommended not to change factory setting.
Should it be necessary to change circulation pump settings, contact a Service Centre.