CONTROLLO ZONE FZ4B
92
cod. FZ4B - 06/2011 (Rev. 00)
EN
5.17 “ONE HOT WATER TANK”
Autocon
fi
guration:
Connection
Description
14
Pump neutral (RY7)
Hot water tank
16
Pump phase (RY7)
Hot water tank
27
NTC sensor (T2)
Hot water tank probe
28
NTC sensor (T2)
Hot water tank probe
X15
Card SK connected
Algorithm
a. DHW Setpoint = Hot water tank Setpoint (TSP26).
b. Zone card Heating Setpoint = Hot water tank Primary Setpoint (TSP23).
c. If T2 becomes lower than the DHW Setpoint minus the value of the Hot water tank Hysteresis parameter (TSP22), DHW mode starts.
The relay of card SK must be powered.
d. RY7 must be powered while the DHW mode is active.
e. The DHW mode ends when T2 becomes higher than the DHW Setpoint: the relay of card SK must be unpowered and RY7 must be unpowered after 2 minutes.
5.18 “ONE DIRECT ZONE AND ONE HOT WATER TANK – 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
14
Pump neutral (RY7)
Hot water tank
16
Pump phase (RY7)
Hot water tank
19
On/Off Thermostat or Remote Control (RT1)
Direct Zone 1
20
On/Off Thermostat or Remote Control (RT1)
Direct Zone 1
27
NTC sensor (T2)
Hot water tank probe
28
NTC sensor (T2)
Hot water tank probe
X15
Card SK connected
5.18.1 On/Off Thermostat
The algorithm of Direct Zone1 remains the same as the con
fi
guration: 5.1 “ONE Direct Zone – No External Sensor”.
The algorithm of the Hot water tank remains the same as the con
fi
guration: 5.17 “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. 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. At the end of DHW mode, post-circulation must not restart.
5.18.2 Remote Control
The algorithm of Direct Zone1 remains the same as the con
fi
guration: 5.1 “ONE Direct Zone – No External Sensor”.
The algorithm of the Hot water tank remains the same as the con
fi
guration: 5.17 “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. 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.
Содержание FZ4B
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