Novus N322S User manual

TEMPERATURE CONTROLLER
N322S
OPERATING MANUAL - V1.9x G
Man 5001252
The N322S is a controller intended for solar water heating applications. It controls the water
circulation system based on the difference of temperature between the solar collector and
the storage tank (or swimming pool).
The instrument contains two NTC-type temperature sensors and two outputs: a control
output (output 1) for activating the water circulation pump and a booster output or support
output (output 2). It provides protections against overheating and freezing to the piping,
preventing damages to the system.
SPECIFICATIONS
INPUT SENSOR:
•Thermistor NTC, 10 kΩ@ 25 °C; Range: –50 to 120 °C (–58 to 248 °F); Accuracy: 0.6 °C
(1.1 °F);
Maximum error in the interchangeability of original NTC sensors: 0.75 °C (33.35 °F). This
error can be eliminated through the offset parameter of the equipment.
Note: For the NTC thermistor option, the sensor comes with the equipment. Its operating
range is limited to –30 to +105 °C (–222 to +221 °F). It has cable of 3 m in length, 2 x 0.5
mm², and can be extended up to 200 meters.
Measurement Resolution:.............................................................. 0.1 º from –19.9 to 119.9 º
..................................................................................... 1 ºC elsewhere
Note: The equipment keeps its precision all over the range, despite the lack of display
resolution in a part of the range does not allow its visualization.
Circulation Output (OUTPUT1): ...........................................................................Relay SPDT
.......................................................................1 HP 250 Vac / 1/3 HP 125 Vac (16 A Resistive)
Support Output (OUTPUT2): ........................................................Relay: 3A / 250 Vac, SPST
POWER SUPPLY: .......................................... 100 to 240 Vac/dc ±10 %
Optionally: .......................................... 12 to 30 Vdc/ac
Mains Frequency: ........................................50~60 Hz
Power Consumption: ............................................5 VA
DIMENSIONS: Width x Height x Depth: ............................................75 x 34 x 75 mm
Weight: .......................................................................................100 g
Panel: ................................................................................70 x 29 mm
ENVIRONMENT: Operating:.............................................0 to 40 °C (32 to 104 ºF)
Storage temperature: ......................... -20 a 60 °C (-4 to 140 ºF)
Relative humidity:............................ 20 to 85 % non-condensing
CASE: ..................................Polycarbonate UL94-2; Protection: Front panel: IP65, Box: IP42
....................................................................................................Suitable wiring: Up to 4.0 mm2
RS-485 digital communication; RTU MODBUS protocol (Optional)
Serial interface not isolated from input circuitry.
Serial interface isolated from power supply input, except in 24 V models.
INSTALLATION
It is important to follow the recommendations below:
•Signal wires should be installed in grounded conduits and away from power or contactor
wires.
•The instrument should have its own power supply wires that should not be shared with
electrical motors, coils, contactors, etc.
•Installing RC filters (47 R and 100 nF, series combination) is strongly recommended at
contactor coils or any other inductor.
•Use protection devices like circuit breakers and fuses.
ELECTRICAL WIRING
Fig. 1 below shows the controller connections to sensor, mains and outputs.
Fig. 1 – N322S terminals
OUTPUT1 is the Circulation Output.
OUTPUT2 is the Support Output.
* The serial communication interface is optional.
OPERATION
The N322S contains several parameters that need to be configured in order to determine
system behavior.
These configuration parameters are organized in groups, the so called parameter levels.
Level Function
0 Temperature Measurement
1 Setpoint Adjustment
2 Configuration
3 Calibration
Upon power-up, the N322S display shows for 1 second its firmware version. This information
is useful when consulting the factory.
Then, the temperatures of the sensors are displayed, according to the scheme defined in the
parameter “ind”. This is the parameter level 0(temperature measurement level).
For accessing the level 1, press the key for 2 seconds until the “D0n” parameter
appears. Release the key to remain on this level Pressing the key successively the
other parameters in this level are displayed.
For accessing the level 2, press the key for 4 seconds until the “unt” parameter
appears. Release the key to remain on this level. Press again to access the other
parameters of this level. After reaching the last parameter, the controller will return to the
temperature measurement level.
Use the and keys to alter a parameter value. The display alternates the parameters
prompts and their respective value.
Notes: 1 The configuration will be saved by the controller upon advancing to the next
parameter in a level.
2If no keypad activity is detected within 20 seconds, the controller saves the
current parameter value and returns to the measurement level.
Level 1 – Setpoint Adjustment
At this level, the display presents the setpoint parameters. They define the differential
temperatures values for the control. Use the and keys for setting the suitable
values.
D0n
Differential setpoint for activating the pump.
When the difference between T1 and T2 is higher
than the value
configured in
d0n
the pump will be turned on.
Max
d0f
value: 20 ºC.
D0f
Differential setpoint for deactivating the pump.
When the difference between T1 and T2 is lower than the value configured in
d0f
the pump will be turned off.
Adjustable between 1 ºC and
D0n
.
Sp1
Setpoint for activating booster output.
Adjustable between
Spl
and
SPk
.
Level 2 – Programming Level
This level contains other configuration parameters that are needed for establishing a proper
system performance.
Unt
Unit
Temperature Unit – Defines the temperature unit to be displayed.
0
Temperature in degrees Celsius
1
Temperature in degrees Fahrenheit
ind
Indication
Temperature value exhibited on the display.
0
Temperature of the collectors (T1)
1
Temperature of the storage tank (T2)
2
Temperature difference between the sensors (T1 –T2)
3
Alternates the indication of (T1), (T2) and (T1-T2) at every 3s.
I(e
Ice
Setpoint for low temperature.
When the temperature in the solar collector is lower than the value here
configured, the pump is turned on, preventing the water from freezing in the
pipe system and causing damages to it.
Adjustable between
spl
and
spk
.
kti
High
Temperature 1
Setpoint for high temperature (at collector).
When the temperature in the collector is above the value here configured,
the pump is turned off, avoiding the overheated water from damaging the
pipe system.
Adjustable between
Spl
and
SPk
.
Kt2
High
Temperature 2
Setpoint for high temperature at S2 (storage tank).
When the temperature at the sensor S2 is above the value here configured,
the pump is turned off in order to avoid thermal discomfort.
This function is useful in swimming pool heating systems which do not use
dedicated third sensor.
Adjustable between
spl
and
spk
.
A(1
Action 1
Action type for booster output (
SP1
):
0
Reverse
Action Control. Good for heating. Turns on the booster
output when temperature is below SP1.
1
Direct Action Control. Good for cooling. Turns on the booster output
when temperature is higher than SP1.
kys
Histeresis
Antifreezing temperature hysteresis of sensor S1 (
i(e
). In degrees.
Adjustable between 0.1 and 50.0 ºC
Ky1
Histeresis 1
Overheating temperature hysteresis of sensor S1 (
kt1
). In degrees.
Adjustable between 0.1 and 50.0 ºC
Ky2
Histeresis 2
Overheating temperature hysteresis of sensor S2 (
kt2
). In degrees.
Adjustable between 0.1 and 50.0 °C.

TEMPERATURE CONTROLLER
N322S
OPERATING MANUAL - V1.9x G
Man 5001252
The N322S is a controller intended for solar water heating applications. It controls the water
circulation system based on the difference of temperature between the solar collector and
the storage tank (or swimming pool).
The instrument contains two NTC-type temperature sensors and two outputs: a control
output (output 1) for activating the water circulation pump and a booster output or support
output (output 2). It provides protections against overheating and freezing to the piping,
preventing damages to the system.
SPECIFICATIONS
INPUT SENSOR:
•Thermistor NTC, 10 kΩ@ 25 °C; Range: –50 to 120 °C (–58 to 248 °F); Accuracy: 0.6 °C
(1.1 °F);
Maximum error in the interchangeability of original NTC sensors: 0.75 °C (33.35 °F). This
error can be eliminated through the offset parameter of the equipment.
Note: For the NTC thermistor option, the sensor comes with the equipment. Its operating
range is limited to –30 to +105 °C (–222 to +221 °F). It has cable of 3 m in length, 2 x 0.5
mm², and can be extended up to 200 meters.
Measurement Resolution:.............................................................. 0.1 º from –19.9 to 119.9 º
..................................................................................... 1 ºC elsewhere
Note: The equipment keeps its precision all over the range, despite the lack of display
resolution in a part of the range does not allow its visualization.
Circulation Output (OUTPUT1): ...........................................................................Relay SPDT
.......................................................................1 HP 250 Vac / 1/3 HP 125 Vac (16 A Resistive)
Support Output (OUTPUT2): ........................................................Relay: 3A / 250 Vac, SPST
POWER SUPPLY: .......................................... 100 to 240 Vac/dc ±10 %
Optionally: .......................................... 12 to 30 Vdc/ac
Mains Frequency: ........................................50~60 Hz
Power Consumption: ............................................5 VA
DIMENSIONS: Width x Height x Depth: ............................................75 x 34 x 75 mm
Weight: .......................................................................................100 g
Panel: ................................................................................70 x 29 mm
ENVIRONMENT: Operating:.............................................0 to 40 °C (32 to 104 ºF)
Storage temperature: ......................... -20 a 60 °C (-4 to 140 ºF)
Relative humidity:............................ 20 to 85 % non-condensing
CASE: ..................................Polycarbonate UL94-2; Protection: Front panel: IP65, Box: IP42
....................................................................................................Suitable wiring: Up to 4.0 mm2
RS-485 digital communication; RTU MODBUS protocol (Optional)
Serial interface not isolated from input circuitry.
Serial interface isolated from power supply input, except in 24 V models.
INSTALLATION
It is important to follow the recommendations below:
•Signal wires should be installed in grounded conduits and away from power or contactor
wires.
•The instrument should have its own power supply wires that should not be shared with
electrical motors, coils, contactors, etc.
•Installing RC filters (47 R and 100 nF, series combination) is strongly recommended at
contactor coils or any other inductor.
•Use protection devices like circuit breakers and fuses.
ELECTRICAL WIRING
Fig. 1 below shows the controller connections to sensor, mains and outputs.
Fig. 1 – N322S terminals
OUTPUT1 is the Circulation Output.
OUTPUT2 is the Support Output.
* The serial communication interface is optional.
OPERATION
The N322S contains several parameters that need to be configured in order to determine
system behavior.
These configuration parameters are organized in groups, the so called parameter levels.
Level Function
0 Temperature Measurement
1 Setpoint Adjustment
2 Configuration
3 Calibration
Upon power-up, the N322S display shows for 1 second its firmware version. This information
is useful when consulting the factory.
Then, the temperatures of the sensors are displayed, according to the scheme defined in the
parameter “ind”. This is the parameter level 0(temperature measurement level).
For accessing the level 1, press the key for 2 seconds until the “D0n” parameter
appears. Release the key to remain on this level Pressing the key successively the
other parameters in this level are displayed.
For accessing the level 2, press the key for 4 seconds until the “unt” parameter
appears. Release the key to remain on this level. Press again to access the other
parameters of this level. After reaching the last parameter, the controller will return to the
temperature measurement level.
Use the and keys to alter a parameter value. The display alternates the parameters
prompts and their respective value.
Notes: 1 The configuration will be saved by the controller upon advancing to the next
parameter in a level.
2If no keypad activity is detected within 20 seconds, the controller saves the
current parameter value and returns to the measurement level.
Level 1 – Setpoint Adjustment
At this level, the display presents the setpoint parameters. They define the differential
temperatures values for the control. Use the and keys for setting the suitable
values.
D0n
Differential setpoint for activating the pump.
When the difference between T1 and T2 is higher
than the value
configured in
d0n
the pump will be turned on.
Max
d0f
value: 20 ºC.
D0f
Differential setpoint for deactivating the pump.
When the difference between T1 and T2 is lower than the value configured in
d0f
the pump will be turned off.
Adjustable between 1 ºC and
D0n
.
Sp1
Setpoint for activating booster output.
Adjustable between
Spl
and
SPk
.
Level 2 – Programming Level
This level contains other configuration parameters that are needed for establishing a proper
system performance.
Unt
Unit
Temperature Unit – Defines the temperature unit to be displayed.
0
Temperature in degrees Celsius
1
Temperature in degrees Fahrenheit
ind
Indication
Temperature value exhibited on the display.
0
Temperature of the collectors (T1)
1
Temperature of the storage tank (T2)
2
Temperature difference between the sensors (T1 –T2)
3
Alternates the indication of (T1), (T2) and (T1-T2) at every 3s.
I(e
Ice
Setpoint for low temperature.
When the temperature in the solar collector is lower than the value here
configured, the pump is turned on, preventing the water from freezing in the
pipe system and causing damages to it.
Adjustable between
spl
and
spk
.
kti
High
Temperature 1
Setpoint for high temperature (at collector).
When the temperature in the collector is above the value here configured,
the pump is turned off, avoiding the overheated water from damaging the
pipe system.
Adjustable between
Spl
and
SPk
.
Kt2
High
Temperature 2
Setpoint for high temperature at S2 (storage tank).
When the temperature at the sensor S2 is above the value here configured,
the pump is turned off in order to avoid thermal discomfort.
This function is useful in swimming pool heating systems which do not use
dedicated third sensor.
Adjustable between
spl
and
spk
.
A(1
Action 1
Action type for booster output (
SP1
):
0
Reverse
Action Control. Good for heating. Turns on the booster
output when temperature is below SP1.
1
Direct Action Control. Good for cooling. Turns on the booster output
when temperature is higher than SP1.
kys
Histeresis
Antifreezing temperature hysteresis of sensor S1 (
i(e
). In degrees.
Adjustable between 0.1 and 50.0 ºC
Ky1
Histeresis 1
Overheating temperature hysteresis of sensor S1 (
kt1
). In degrees.
Adjustable between 0.1 and 50.0 ºC
Ky2
Histeresis 2
Overheating temperature hysteresis of sensor S2 (
kt2
). In degrees.
Adjustable between 0.1 and 50.0 °C.

TEMPERATURE CONTROLLER
N322S
OPERATING MANUAL - V1.9x G
Man 5001252
The N322S is a controller intended for solar water heating applications. It controls the water
circulation system based on the difference of temperature between the solar collector and
the storage tank (or swimming pool).
The instrument contains two NTC-type temperature sensors and two outputs: a control
output (output 1) for activating the water circulation pump and a booster output or support
output (output 2). It provides protections against overheating and freezing to the piping,
preventing damages to the system.
SPECIFICATIONS
INPUT SENSOR:
•Thermistor NTC, 10 kΩ@ 25 °C; Range: –50 to 120 °C (–58 to 248 °F); Accuracy: 0.6 °C
(1.1 °F);
Maximum error in the interchangeability of original NTC sensors: 0.75 °C (33.35 °F). This
error can be eliminated through the offset parameter of the equipment.
Note: For the NTC thermistor option, the sensor comes with the equipment. Its operating
range is limited to –30 to +105 °C (–222 to +221 °F). It has cable of 3 m in length, 2 x 0.5
mm², and can be extended up to 200 meters.
Measurement Resolution:.............................................................. 0.1 º from –19.9 to 119.9 º
..................................................................................... 1 ºC elsewhere
Note: The equipment keeps its precision all over the range, despite the lack of display
resolution in a part of the range does not allow its visualization.
Circulation Output (OUTPUT1): ...........................................................................Relay SPDT
.......................................................................1 HP 250 Vac / 1/3 HP 125 Vac (16 A Resistive)
Support Output (OUTPUT2): ........................................................Relay: 3A / 250 Vac, SPST
POWER SUPPLY: .......................................... 100 to 240 Vac/dc ±10 %
Optionally: .......................................... 12 to 30 Vdc/ac
Mains Frequency: ........................................50~60 Hz
Power Consumption: ............................................5 VA
DIMENSIONS: Width x Height x Depth: ............................................75 x 34 x 75 mm
Weight: .......................................................................................100 g
Panel: ................................................................................70 x 29 mm
ENVIRONMENT: Operating:.............................................0 to 40 °C (32 to 104 ºF)
Storage temperature: ......................... -20 a 60 °C (-4 to 140 ºF)
Relative humidity:............................ 20 to 85 % non-condensing
CASE: ..................................Polycarbonate UL94-2; Protection: Front panel: IP65, Box: IP42
....................................................................................................Suitable wiring: Up to 4.0 mm2
RS-485 digital communication; RTU MODBUS protocol (Optional)
Serial interface not isolated from input circuitry.
Serial interface isolated from power supply input, except in 24 V models.
INSTALLATION
It is important to follow the recommendations below:
•Signal wires should be installed in grounded conduits and away from power or contactor
wires.
•The instrument should have its own power supply wires that should not be shared with
electrical motors, coils, contactors, etc.
•Installing RC filters (47 R and 100 nF, series combination) is strongly recommended at
contactor coils or any other inductor.
•Use protection devices like circuit breakers and fuses.
ELECTRICAL WIRING
Fig. 1 below shows the controller connections to sensor, mains and outputs.
Fig. 1 – N322S terminals
OUTPUT1 is the Circulation Output.
OUTPUT2 is the Support Output.
* The serial communication interface is optional.
OPERATION
The N322S contains several parameters that need to be configured in order to determine
system behavior.
These configuration parameters are organized in groups, the so called parameter levels.
Level Function
0 Temperature Measurement
1 Setpoint Adjustment
2 Configuration
3 Calibration
Upon power-up, the N322S display shows for 1 second its firmware version. This information
is useful when consulting the factory.
Then, the temperatures of the sensors are displayed, according to the scheme defined in the
parameter “ind”. This is the parameter level 0(temperature measurement level).
For accessing the level 1, press the key for 2 seconds until the “D0n” parameter
appears. Release the key to remain on this level Pressing the key successively the
other parameters in this level are displayed.
For accessing the level 2, press the key for 4 seconds until the “unt” parameter
appears. Release the key to remain on this level. Press again to access the other
parameters of this level. After reaching the last parameter, the controller will return to the
temperature measurement level.
Use the and keys to alter a parameter value. The display alternates the parameters
prompts and their respective value.
Notes: 1 The configuration will be saved by the controller upon advancing to the next
parameter in a level.
2If no keypad activity is detected within 20 seconds, the controller saves the
current parameter value and returns to the measurement level.
Level 1 – Setpoint Adjustment
At this level, the display presents the setpoint parameters. They define the differential
temperatures values for the control. Use the and keys for setting the suitable
values.
D0n
Differential setpoint for activating the pump.
When the difference between T1 and T2 is higher
than the value
configured in
d0n
the pump will be turned on.
Max
d0f
value: 20 ºC.
D0f
Differential setpoint for deactivating the pump.
When the difference between T1 and T2 is lower than the value configured in
d0f
the pump will be turned off.
Adjustable between 1 ºC and
D0n
.
Sp1
Setpoint for activating booster output.
Adjustable between
Spl
and
SPk
.
Level 2 – Programming Level
This level contains other configuration parameters that are needed for establishing a proper
system performance.
Unt
Unit
Temperature Unit – Defines the temperature unit to be displayed.
0
Temperature in degrees Celsius
1
Temperature in degrees Fahrenheit
ind
Indication
Temperature value exhibited on the display.
0
Temperature of the collectors (T1)
1
Temperature of the storage tank (T2)
2
Temperature difference between the sensors (T1 –T2)
3
Alternates the indication of (T1), (T2) and (T1-T2) at every 3s.
I(e
Ice
Setpoint for low temperature.
When the temperature in the solar collector is lower than the value here
configured, the pump is turned on, preventing the water from freezing in the
pipe system and causing damages to it.
Adjustable between
spl
and
spk
.
kti
High
Temperature 1
Setpoint for high temperature (at collector).
When the temperature in the collector is above the value here configured,
the pump is turned off, avoiding the overheated water from damaging the
pipe system.
Adjustable between
Spl
and
SPk
.
Kt2
High
Temperature 2
Setpoint for high temperature at S2 (storage tank).
When the temperature at the sensor S2 is above the value here configured,
the pump is turned off in order to avoid thermal discomfort.
This function is useful in swimming pool heating systems which do not use
dedicated third sensor.
Adjustable between
spl
and
spk
.
A(1
Action 1
Action type for booster output (
SP1
):
0
Reverse
Action Control. Good for heating. Turns on the booster
output when temperature is below SP1.
1
Direct Action Control. Good for cooling. Turns on the booster output
when temperature is higher than SP1.
kys
Histeresis
Antifreezing temperature hysteresis of sensor S1 (
i(e
). In degrees.
Adjustable between 0.1 and 50.0 ºC
Ky1
Histeresis 1
Overheating temperature hysteresis of sensor S1 (
kt1
). In degrees.
Adjustable between 0.1 and 50.0 ºC
Ky2
Histeresis 2
Overheating temperature hysteresis of sensor S2 (
kt2
). In degrees.
Adjustable between 0.1 and 50.0 °C.

b1y
Booster
Booster output 1 activating temperature hysteresis (
SP1
).
Adjustable between 0.1 and 50.0 ºC
dly
Delay
Control start delay. After having the controller turned on, the control output
will be activated after the time programmed in this parameter has lapsed.
Value in seconds, from 0 to 250 seconds.
0f1
Offset Sensor 1
Offset correction value for the temperature measured by the sensor 1. This
parameter allows for small adjustments in the sensor 1 temperature reading.
Measurement differences may happen, for instance, when a temperature
sensor is replaced.
Adjustable from -10.0 to 10.0 °C.
0f2
Offset Sensor 2
Offset correction value for the temperature measured by the sensor 2. This
parameter allows small adjustments to the sensor 2 temperature reading.
Measurement differences may occur, for instance, when a temperature sensor
is replaced.
Adjustable from -10.0 to 10.0 °C.
spl
SP Low Limit
Lower
limit of the setpoint value: defines the
minimum
value for setpoint
adjustment. In degrees.
Adjustable between -50 and 120 °C.
spk
SP High Limit
Upper
limit of the setpoint: defines the
maximum
value for setpoint
adjustment. Must be defined with a value necessarily higher than
spl
. In
degrees.
Adjustable between -50 and 120 °C.
Add
Address
Modbus Address: used to define a unique network address in instruments
that are featured with the optional RS485 Modbus RTU communication.
Address range is from 1 to 247.
Level 3 – Calibration level
The N322S inputs are factory calibrated and recalibration should only be done by qualified
personnel. If you are not familiar with these procedures do not attempt to calibrate this.
Press the key for 10 seconds to access this level. This level contains also the
parameters for configuration the protection.
If you have entered this level accidentally, go through all the parameters without making
any changes until the controller returns to the measurement level.
pas
Password – Enter the correct password to
unlock write operations in the
following parameters.
[l1
Calibration Low Input 1 – Input 1 offset.
[k1
Calibration High Input 1 – Gain adjustment (full scale value).
[l2
Calibration Low Input 2 - Input 2 offset.
[k2
Calibration High Input 2 – Input 2 gain adjustment (full scale value).
FA(
Factory Calibration –
Restores factory calibration parameters. Change from
0
to
1
to restore the calibration parameters with factory values.
Prt
Protection – Defines the levels of parameters that will be password protected.
See "Configuration Protection" for details.
Pa(
Password Change – Allows changing the current password to a new one.
Values from 1 to 999 are allowed.
Sn2
Serial number 2 – First part of the controller electronic serial number.
sn1
Serial number 1 – Second part of the controller electronic serial number.
sn0
Serial number 0 – Third part of the controller electronic serial number.
WORKING WITH THE CONTROLLER
While the solar collector is receiving energy, the temperature in the sensor S1 increases.
When T1 – T2 is higher than the value specified in d0n, the pump will be turned on,
circulating the heated water down and storing it in the tank.
As the pump is operating, the hot water will circulate downwards and the cold water goes
upwards. Consequently, the temperature difference between S1 and S2 tends to diminish.
When this difference goes under the value configured in d0f, the pump will be turned off
and the water circulation will stop.
The signaler P1 at the front panel of the controller will light up when the control output is
activated. The signaler P2 light up when the booster output is activated.
Fig. 2 – Front Panel
Indicator Function
T1 Sensor 1 temperature
T2 Sensor 2 temperature
T1 T2 S1 – S2 (Differential Temperature)
CONFIGURATION PROTECTION
A protection system to avoid unwanted changes to the controller parameters is implemented.
The level of protection can be selected from partial to full. The following parameters are part
of the protection system:
Pas: When this parameter is presented, the correct password should be entered to
allow changes of parameters in the following levels.
Prt: Defines the level of parameters that will be password protected:
1- Only calibration level is protected (factory configuration);
2- Calibration and configuration levels are protected;
3- All levels are protected – calibration, configuration and setpoints;
PA(:Parameter for definition of a new password. Since it is located in the calibration
level, can only be changed by a user that knows the current password. Valid
passwords are in the change 1 to 999.
CONFIGURATION PROTECTION USAGE
PAS parameter is displayed before entering a protected level. If the correct password is
entered, parameters in all following levels can be changed. If wrong or no password is
entered, parameters in the following levels will be read only.
Important notes:
1 - After five consecutive attempts to enter a wrong password, new tentative will be blocked
for the next 10 minutes. If the current valid password is unknown, the master password
can be used only to define a new password for the controller.
2 - The password for a brand new device is 111.
MASTER PASSWORD
The master password allows user to define a new password for the controller, even if the
current password is unknown. The master password is based in the serial number of the
controller, and calculated as following:
[ 1 ] + [ higher digit of SN2 ] + [ higher digit of SN1 ] + [ higher digit of SN0 ]
For example the master password for the device with serial number 987123465 is: 1936
As follows: sn2= 987; sn1= 123; sn0= 465 = 1 + 9 + 3 + 6
How to use the master password:
1- Enter the master password value at PaS prompt.
2- Go to PA( parameter and enter the new password, which must not be zero (0).
3- Now you can use this new password to access all controller parameters with modify rights.
ERROR MESSAGES
Sensor measurement errors force the controller outputs to be turned off. The cause for these
errors may have origin in a bad connection, sensor defect (cable or element) or system
temperature outside the sensor working range. The display signs related to measurement errors
are shown below:
•Measured temperature exceeded maximum
allowed range for
the sensor. Short circuited NTC sensor.
IND
=
0
or
1
•Measured temperature is below minimum measurement range
of the sensor. Broken NTC.
IND
=
0
or
1
•If the temperature in S1 or S2 exceeds the measurement limit
IND
=
2
, the differential value displayed is
0
.
WARRANTY
Warranty conditions are available on our website www.novusautomation.com/warranty.

b1y
Booster
Booster output 1 activating temperature hysteresis (
SP1
).
Adjustable between 0.1 and 50.0 ºC
dly
Delay
Control start delay. After having the controller turned on, the control output
will be activated after the time programmed in this parameter has lapsed.
Value in seconds, from 0 to 250 seconds.
0f1
Offset Sensor 1
Offset correction value for the temperature measured by the sensor 1. This
parameter allows for small adjustments in the sensor 1 temperature reading.
Measurement differences may happen, for instance, when a temperature
sensor is replaced.
Adjustable from -10.0 to 10.0 °C.
0f2
Offset Sensor 2
Offset correction value for the temperature measured by the sensor 2. This
parameter allows small adjustments to the sensor 2 temperature reading.
Measurement differences may occur, for instance, when a temperature sensor
is replaced.
Adjustable from -10.0 to 10.0 °C.
spl
SP Low Limit
Lower
limit of the setpoint value: defines the
minimum
value for setpoint
adjustment. In degrees.
Adjustable between -50 and 120 °C.
spk
SP High Limit
Upper
limit of the setpoint: defines the
maximum
value for setpoint
adjustment. Must be defined with a value necessarily higher than
spl
. In
degrees.
Adjustable between -50 and 120 °C.
Add
Address
Modbus Address: used to define a unique network address in instruments
that are featured with the optional RS485 Modbus RTU communication.
Address range is from 1 to 247.
Level 3 – Calibration level
The N322S inputs are factory calibrated and recalibration should only be done by qualified
personnel. If you are not familiar with these procedures do not attempt to calibrate this.
Press the key for 10 seconds to access this level. This level contains also the
parameters for configuration the protection.
If you have entered this level accidentally, go through all the parameters without making
any changes until the controller returns to the measurement level.
pas
Password – Enter the correct password to
unlock write operations in the
following parameters.
[l1
Calibration Low Input 1 – Input 1 offset.
[k1
Calibration High Input 1 – Gain adjustment (full scale value).
[l2
Calibration Low Input 2 - Input 2 offset.
[k2
Calibration High Input 2 – Input 2 gain adjustment (full scale value).
FA(
Factory Calibration –
Restores factory calibration parameters. Change from
0
to
1
to restore the calibration parameters with factory values.
Prt
Protection – Defines the levels of parameters that will be password protected.
See "Configuration Protection" for details.
Pa(
Password Change – Allows changing the current password to a new one.
Values from 1 to 999 are allowed.
Sn2
Serial number 2 – First part of the controller electronic serial number.
sn1
Serial number 1 – Second part of the controller electronic serial number.
sn0
Serial number 0 – Third part of the controller electronic serial number.
WORKING WITH THE CONTROLLER
While the solar collector is receiving energy, the temperature in the sensor S1 increases.
When T1 – T2 is higher than the value specified in d0n, the pump will be turned on,
circulating the heated water down and storing it in the tank.
As the pump is operating, the hot water will circulate downwards and the cold water goes
upwards. Consequently, the temperature difference between S1 and S2 tends to diminish.
When this difference goes under the value configured in d0f, the pump will be turned off
and the water circulation will stop.
The signaler P1 at the front panel of the controller will light up when the control output is
activated. The signaler P2 light up when the booster output is activated.
Fig. 2 – Front Panel
Indicator Function
T1 Sensor 1 temperature
T2 Sensor 2 temperature
T1 T2 S1 – S2 (Differential Temperature)
CONFIGURATION PROTECTION
A protection system to avoid unwanted changes to the controller parameters is implemented.
The level of protection can be selected from partial to full. The following parameters are part
of the protection system:
Pas: When this parameter is presented, the correct password should be entered to
allow changes of parameters in the following levels.
Prt: Defines the level of parameters that will be password protected:
1- Only calibration level is protected (factory configuration);
2- Calibration and configuration levels are protected;
3- All levels are protected – calibration, configuration and setpoints;
PA(:Parameter for definition of a new password. Since it is located in the calibration
level, can only be changed by a user that knows the current password. Valid
passwords are in the change 1 to 999.
CONFIGURATION PROTECTION USAGE
PAS parameter is displayed before entering a protected level. If the correct password is
entered, parameters in all following levels can be changed. If wrong or no password is
entered, parameters in the following levels will be read only.
Important notes:
1 - After five consecutive attempts to enter a wrong password, new tentative will be blocked
for the next 10 minutes. If the current valid password is unknown, the master password
can be used only to define a new password for the controller.
2 - The password for a brand new device is 111.
MASTER PASSWORD
The master password allows user to define a new password for the controller, even if the
current password is unknown. The master password is based in the serial number of the
controller, and calculated as following:
[ 1 ] + [ higher digit of SN2 ] + [ higher digit of SN1 ] + [ higher digit of SN0 ]
For example the master password for the device with serial number 987123465 is: 1936
As follows: sn2= 987; sn1= 123; sn0= 465 = 1 + 9 + 3 + 6
How to use the master password:
1- Enter the master password value at PaS prompt.
2- Go to PA( parameter and enter the new password, which must not be zero (0).
3- Now you can use this new password to access all controller parameters with modify rights.
ERROR MESSAGES
Sensor measurement errors force the controller outputs to be turned off. The cause for these
errors may have origin in a bad connection, sensor defect (cable or element) or system
temperature outside the sensor working range. The display signs related to measurement errors
are shown below:
•Measured temperature exceeded maximum
allowed range for
the sensor. Short circuited NTC sensor.
IND
=
0
or
1
•Measured temperature is below minimum measurement range
of the sensor. Broken NTC.
IND
=
0
or
1
•If the temperature in S1 or S2 exceeds the measurement limit
IND
=
2
, the differential value displayed is
0
.
WARRANTY
Warranty conditions are available on our website www.novusautomation.com/warranty.

b1y
Booster
Booster output 1 activating temperature hysteresis (
SP1
).
Adjustable between 0.1 and 50.0 ºC
dly
Delay
Control start delay. After having the controller turned on, the control output
will be activated after the time programmed in this parameter has lapsed.
Value in seconds, from 0 to 250 seconds.
0f1
Offset Sensor 1
Offset correction value for the temperature measured by the sensor 1. This
parameter allows for small adjustments in the sensor 1 temperature reading.
Measurement differences may happen, for instance, when a temperature
sensor is replaced.
Adjustable from -10.0 to 10.0 °C.
0f2
Offset Sensor 2
Offset correction value for the temperature measured by the sensor 2. This
parameter allows small adjustments to the sensor 2 temperature reading.
Measurement differences may occur, for instance, when a temperature sensor
is replaced.
Adjustable from -10.0 to 10.0 °C.
spl
SP Low Limit
Lower
limit of the setpoint value: defines the
minimum
value for setpoint
adjustment. In degrees.
Adjustable between -50 and 120 °C.
spk
SP High Limit
Upper
limit of the setpoint: defines the
maximum
value for setpoint
adjustment. Must be defined with a value necessarily higher than
spl
. In
degrees.
Adjustable between -50 and 120 °C.
Add
Address
Modbus Address: used to define a unique network address in instruments
that are featured with the optional RS485 Modbus RTU communication.
Address range is from 1 to 247.
Level 3 – Calibration level
The N322S inputs are factory calibrated and recalibration should only be done by qualified
personnel. If you are not familiar with these procedures do not attempt to calibrate this.
Press the key for 10 seconds to access this level. This level contains also the
parameters for configuration the protection.
If you have entered this level accidentally, go through all the parameters without making
any changes until the controller returns to the measurement level.
pas
Password – Enter the correct password to
unlock write operations in the
following parameters.
[l1
Calibration Low Input 1 – Input 1 offset.
[k1
Calibration High Input 1 – Gain adjustment (full scale value).
[l2
Calibration Low Input 2 - Input 2 offset.
[k2
Calibration High Input 2 – Input 2 gain adjustment (full scale value).
FA(
Factory Calibration –
Restores factory calibration parameters. Change from
0
to
1
to restore the calibration parameters with factory values.
Prt
Protection – Defines the levels of parameters that will be password protected.
See "Configuration Protection" for details.
Pa(
Password Change – Allows changing the current password to a new one.
Values from 1 to 999 are allowed.
Sn2
Serial number 2 – First part of the controller electronic serial number.
sn1
Serial number 1 – Second part of the controller electronic serial number.
sn0
Serial number 0 – Third part of the controller electronic serial number.
WORKING WITH THE CONTROLLER
While the solar collector is receiving energy, the temperature in the sensor S1 increases.
When T1 – T2 is higher than the value specified in d0n, the pump will be turned on,
circulating the heated water down and storing it in the tank.
As the pump is operating, the hot water will circulate downwards and the cold water goes
upwards. Consequently, the temperature difference between S1 and S2 tends to diminish.
When this difference goes under the value configured in d0f, the pump will be turned off
and the water circulation will stop.
The signaler P1 at the front panel of the controller will light up when the control output is
activated. The signaler P2 light up when the booster output is activated.
Fig. 2 – Front Panel
Indicator Function
T1 Sensor 1 temperature
T2 Sensor 2 temperature
T1 T2 S1 – S2 (Differential Temperature)
CONFIGURATION PROTECTION
A protection system to avoid unwanted changes to the controller parameters is implemented.
The level of protection can be selected from partial to full. The following parameters are part
of the protection system:
Pas: When this parameter is presented, the correct password should be entered to
allow changes of parameters in the following levels.
Prt: Defines the level of parameters that will be password protected:
1- Only calibration level is protected (factory configuration);
2- Calibration and configuration levels are protected;
3- All levels are protected – calibration, configuration and setpoints;
PA(:Parameter for definition of a new password. Since it is located in the calibration
level, can only be changed by a user that knows the current password. Valid
passwords are in the change 1 to 999.
CONFIGURATION PROTECTION USAGE
PAS parameter is displayed before entering a protected level. If the correct password is
entered, parameters in all following levels can be changed. If wrong or no password is
entered, parameters in the following levels will be read only.
Important notes:
1 - After five consecutive attempts to enter a wrong password, new tentative will be blocked
for the next 10 minutes. If the current valid password is unknown, the master password
can be used only to define a new password for the controller.
2 - The password for a brand new device is 111.
MASTER PASSWORD
The master password allows user to define a new password for the controller, even if the
current password is unknown. The master password is based in the serial number of the
controller, and calculated as following:
[ 1 ] + [ higher digit of SN2 ] + [ higher digit of SN1 ] + [ higher digit of SN0 ]
For example the master password for the device with serial number 987123465 is: 1936
As follows: sn2= 987; sn1= 123; sn0= 465 = 1 + 9 + 3 + 6
How to use the master password:
1- Enter the master password value at PaS prompt.
2- Go to PA( parameter and enter the new password, which must not be zero (0).
3- Now you can use this new password to access all controller parameters with modify rights.
ERROR MESSAGES
Sensor measurement errors force the controller outputs to be turned off. The cause for these
errors may have origin in a bad connection, sensor defect (cable or element) or system
temperature outside the sensor working range. The display signs related to measurement errors
are shown below:
•Measured temperature exceeded maximum
allowed range for
the sensor. Short circuited NTC sensor.
IND
=
0
or
1
•Measured temperature is below minimum measurement range
of the sensor. Broken NTC.
IND
=
0
or
1
•If the temperature in S1 or S2 exceeds the measurement limit
IND
=
2
, the differential value displayed is
0
.
WARRANTY
Warranty conditions are available on our website www.novusautomation.com/warranty.