Gruppo Ferroli FZ4B, Use And Installation Instructions

Page: 114 / 292

CONTROLLO ZONE FZ4B
114
cod. FZ4B - 06/2011 (Rev. 00)
EN
What changes is only the calculation of Zone1 Heating Setpoint if the sliding temperature was activated.
6.26 “ONE MIXED ZONE, ONE DIRECT ZONE AND ONE HOT WATER TANK – NO EXTERNAL SENSOR”
Autocon fi guration:
Connection Description
7
Pump phase (RY1) Mixed zone 1
8
Pump neutral (RY1) Mixed zone 1
9
Mixing Valve Opening phase (RY2) Mixed zone 1
10
Mixing Valve neutral (RY2) Mixed zone 1
11
Mixing Valve Closing phase (RY3) Mixed zone 1
12
Pump phase (RY4) Direct zone 1
14
Pump neutral (RY5) Direct zone 1
14
Pump neutral (RY7) Hot water tank
16
Pump phase (RY7) Hot water tank
19
On/Off Thermostat or Remote Control (RT1) Mixed zone 1
20
On/Off Thermostat or Remote Control (RT1) Mixed zone 1
23
On/Off Thermostat or Remote Control (RT3) Direct zone 1
24
On/Off Thermostat or Remote Control (RT3) Direct zone 1
25
NTC sensor (T1) Mixed zone 1 delivery
26
NTC sensor (T1) Mixed zone 1 delivery
27
NTC sensor (T2) Hot water tank probe
28
NTC sensor (T2) Hot water tank probe
29
NTC sensor (T3) Heating delivery
30
NTC sensor (T3) Heating delivery
X15
Card SK connected
6.26.1 On/Off Thermostat
The algorithm of the Mixed Zone remains the same as the con fi guration: 6.7 “ONE Mixed Zone – No External Sensor”.
The algorithm remains the same as the con fi guration: 6.1 “ONE direct Zone – No External Sensor”.
The algorithm of the Hot water tank remains the same as the con fi guration: 6.17 “ONE Hot water tank".
What changes is:
a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.
During DHW mode, the algorithm of the Hot water tank has the highest priority.
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 highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water
tank Primary Setpoint (TSP23).
If the circuit (Heating or Hot water tank) that ends the request has the highest 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.
6.26.2 Remote Control
The algorithm of the Mixed Zone remains the same as the con fi guration: 6.7 “ONE Mixed Zone – No External Sensor”.
The algorithm remains the same as the con fi guration: 6.1 “ONE Direct Zone – No External Sensor”.
The algorithm of the Hot water tank remains the same as the con fi guration: 6.17 “ONE Hot water tank".
What changes is:
a. DHW has priority over Heating: the Hot water tank Priority parameter (TSP25) is equal to 0.
During DHW mode, the algorithm of the Hot water tank has the highest priority.
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 highest of the three: Zone1 Heating Setpoint, Zone2 Heating Setpoint and Hot water
tank Primary Setpoint (TSP23).
If the circuit (Heating or Hot water tank) that ends the request has the highest 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.