Gruppo Ferroli FZ4B, Use And Installation Instructions

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CONTROLLO ZONE FZ4B
100
cod. FZ4B - 06/2011 (Rev. 00)
EN
d. At the end of the Delay for Zone timer (TSP29), the Heating standby Time timer (TSP33) must be reset.
If T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered.
If T3 becomes higher than the Zone card Heating Setpoint value plus the Heating Hysteresis value (TSP32), the relay of card SK must be unpowered and, at the
same time, the Heating standby Time timer (TSP33) must start.
At the end of the Heating standby Time timer (TSP33), if T3 is lower than the Zone card Heating Setpoint value, the relay of card SK must be powered, otherwise
the latter will be powered as soon as T3 is lower than the Zone card Heating Setpoint value.
e. If RT1 deactivates the request, the relay of card SK must be unpowered; whereas RY1 must remain powered for the entire duration of the Post-circulation Time timer
(TSP27); at the end of this timer, RY1 must be unpowered.
6.2 “ONE DIRECT ZONE – WITH EXTERNAL SENSOR"
Autocon fi guration:
Connection Description
7
Pump phase or Valve (RY1) Direct zone 1
8
Pump neutral or Valve (RY1) Direct zone 1
19
On/Off Thermostat or Remote Control (RT1) Direct zone 1
20
On/Off Thermostat or Remote Control (RT1) Direct zone 1
29
NTC sensor (T3) Heating delivery
30
NTC sensor (T3) Heating delivery
30
NTC sensor (T4) External probe
31
NTC sensor (T4) External probe
X15
Card SK connected
6.2.1 On/Off Thermostat
The algorithm remains the same as the con fi guration: 6.1 “ONE Direct Zone – No External Sensor”.
What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.
a. If Zone 1 External Probe Curve (TSP05) is equal to 0.
Zone1 Heating Setpoint = Zone1 Max. Temperature (TSP02) + Zone1 calculated setpoint Offset (TSP03).
b. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.
Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).
However:
If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02).
6.2.2 Remote Control
The algorithm remains the same as the con fi guration: 6.1 “ONE Direct Zone – No External Sensor”.
What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.
c. If Zone 1 External Probe Curve (TSP05) is equal to 0.
Zone1 Heating Setpoint = Control Setpoint calculated from Remote C Zone1 calculated setpoint Offset (TSP03).
d. If Zone 1 External Probe Curve (TSP05) is between 1 and 10.
Zone1 Heating Setpoint = Setpoint calculated from External Probe + Zone1 calculated setpoint Offset (TSP03).
However:
If Zone1 Max. Temperature (TSP02) < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Zone1 Max. Temperature (TSP02).
If Control Setpoint calculated from Remote Control < Setpoint calculated from External Probe then Setpoint calculated from External Probe = Control Setpoint cal-
culated from Remote Control.
6.3 “TWO DIRECT ZONES – NO EXTERNAL SENSOR”
Autocon fi guration:
Connection Description
7
Pump phase or Valve (RY1) Direct zone 1
8
Pump neutral or Valve (RY1) Direct zone 1
10
Pump neutral or Valve (RY2) Direct zone 2
12
Pump phase or Valve (RY4) Direct zone 2
19
On/Off Thermostat or Remote Control (RT1) Direct zone 1
20
On/Off Thermostat or Remote Control (RT1) Direct zone 1
21
On/Off Thermostat or Remote Control (RT2) Direct zone 2
22
On/Off Thermostat or Remote Control (RT2) Direct zone 2
29
NTC sensor (T3) Heating delivery
30
NTC sensor (T3) Heating delivery
X15
Card SK connected
The algorithm remains the same as the con fi guration: 6.1 “ONE Direct Zone – No External Sensor”.
What changes is:
a. The calculation of Zone card Heating Setpoint
In case of simultaneous request, the Zone card Heating Setpoint is equal to the higher of the two: Zone1 Heating Setpoint and Zone2 Heating Setpoint.
If the zone that ends the request has the higher Heating Setpoint, the Zone card Heating Setpoint must be immediately decreased until it is equal to the Heating
Setpoint of the zone still in request status.