One Mixed Zone And One Hot Water Tank - With External Sensor; One Mixed Zone, One Direct Zone And One Hot Water Tank - No External Sensor - Gruppo Ferroli FZ4B Instructions D'utilisation

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During DHW mode, the zone request (if occurring) must be stopped without doing post-circulation and the mixing valve must be controlled in closing for the entire

duration of the Mixing valve closing Time timer (TSP31). If DHW mode ends before the end of the Mixing valve closing Time timer (TSP31), the timer must be reset,

because at the end of DHW mode the zone request (if occurring) must restart with the normal algorithm.

b. DHW does not have priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 1.

In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Hot water tank Primary Setpoint

(TSP23).

If the circuit (Heating or Hot water tank) that ends the request has the higher Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal

to the Setpoint of the circuit (Heating or Hot water tank) still in request status.

If the circuit (Heating or Hot water tank) that starts the request has a higher Setpoint than the circuit already in request status, the Zone card Heating Setpoint must

be immediately increased until it is equal to the higher Setpoint of the circuit (Heating or Hot water tank) in request status.

c. Each zone has its own adjustment parameters.

d. Post-circulation time

During DHW mode, if the pump of the zone is doing post-circulation, the latter must be stopped whereas the mixing valve must be controlled in closing for the entire

duration of the Mixing valve closing Time timer (TSP31). At the end of DHW mode, post-circulation must not restart.

e. DHW setpoint

The range for management of ID56 of the Remote Control (DHW temperature adjustment button) is between 10°C and 65°C: zone card ﬁ xed ranges.

Modiﬁ cation of the DHW Setpoint occurs in parallel: through the Hot water tank Setpoint parameter (TSP26) or through ID56 of the Remote Control; the zone card

takes the last modiﬁ ed value and must update both.

f. DHW Eco/Comfort

In Economy mode the DHW request generated by T2 is disabled.

In Comfort mode the DHW request generated by T2 is enabled.

5.25 "ONE MIXED ZONE AND ONE HOT WATER TANK – WITH EXTERNAL SENSOR"

Autoconﬁ guration:

Connection

Description

Pump phase (RY1)

Pump neutral (RY1)

Mixing Valve Opening phase (RY2)

Mixing Valve neutral (RY2)

Mixing Valve Closing phase (RY3)

Pump neutral (RY7)

Pump phase (RY7)

On/Off Thermostat or Remote Control (RT1)

NTC sensor (T1)

NTC sensor (T2)

NTC sensor (T4)

Card SK connected

X15

The algorithm remains the same as the conﬁ guration: 5.24 "ONE Mixed Zone and ONE Hot water tank – No External Sensor".

What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.

5.26 "ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK – NO EXTERNAL SENSOR"

Autoconﬁ guration:

Connection

Description

Pump phase (RY1)

Pump neutral (RY1)

Mixing Valve Opening phase (RY2)

Mixing Valve neutral (RY2)

Mixing Valve Closing phase (RY3)

Pump phase (RY4)

Pump neutral (RY5)

Pump neutral (RY7)

Pump phase (RY7)

On/Off Thermostat or Remote Control (RT1)

On/Off Thermostat or Remote Control (RT3)

NTC sensor (T1)

NTC sensor (T2)

Card SK connected

X15

Mixed zone 1

Hot water tank

Mixed zone 1

Mixed zone 1 delivery

Hot water tank probe

External probe

Mixed zone 1

Direct zone 1

Hot water tank

Mixed zone 1

Direct zone 1

Mixed zone 1 delivery

Hot water tank probe

CONTROLLO ZONE FZ4B

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