SystemAir SysAer SR105 Regulation Manual Download Page 24

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English

EXT

[°C]

STPCOMP

(10°C)

DIFFC (+10°C)

(0°C)

COMPM

(2°C)

EXT

[°C]

DIFFC

10°C

0°C

COMPM

19°C

21°C

Heating STP

EXT

[°C]

STPCOMP

(0°C)

DIFFC (-10°C)

(10°C)

COMPM

(2°C)

EXT

[°C]

DIFFC

10°C

0°C

COMPM

19°C

21°C

Heating STP

100%

Economizer

Air

Quality

(%)

AirQ_STP

AirQ_diff

22 SysAer

Compensation - Positive differential

Example with manual Heating setpoint = 21°C

Compensation - Negative differential

Example with manual Heating setpoint = 21°C

Winter Compensation
Winter set point compensation is enabled when the following conditions are encountered:
the unit is in winter mode

STPCOMP

Compensation set point [°C]

COMPM

Maximum compensation [°C]

DIFFC

Compensation differential [°C]

EXT

External temperature [°C]

4. ROOM AIR QUALITY CONTROL

Room air quality control opens the external damper to increase the percentage of fresh air when the room

air is too much polluted compared to the IAQ (Indoor Air Quality) sensor setpoint.
This function is available only with the IAQ sensor option, which is incompatible with the Indoor air humidity

sensor option. It requires the 2 or 3-damper options.

External damper is controlled by IAQ as illustrated in the figure below:

NB:
When this function asks for opening the external damper at the same time as freecooling for example, the

highest opening has the priority.

Summary of Contents for SysAer SR105

Page 1: ...Roof mounted air conditioning unit Regulation Manual 9 720 â35 000 m3 h 49 2 â 216 4kW 49 6 â 210 6kW SR55 SR65 SR80 SR95 SR105 SR120 SR140 SR160 SR190 SR210 SysAer ...

Page 2: ......

Page 3: ...CONTROL MANUAL NOTICE DE REGULATION REGELUNGSHANDBUCH MANUALE DI REGOLAZIONE INSTRUCCIONES DE REGULACIÓN English Français Español Deutsch Italiano ...

Page 4: ... OPTION 14 3 8 SUPPLY AIR TEMPERATURE MINIMUM LIMIT 14 3 9 FRECO OPTION 14 3 10 THERMODYNAMIC RECOVERY OPTION TRECO 15 3 10 1 MAIN CONTROLLER 15 3 10 2 SECONDARY CONTROLLER 16 3 10 3 OPERATING LIMITS 16 3 11 AUXILIARY HEATING 17 3 11 1 AUXILIARY ELECTRICAL HEATING ELEMENTS 18 3 11 2 HOT WATER COIL 18 3 11 3 MODULATING GAS BURNER 19 3 11 4 GAS BURNER TWO STAGE 20 3 12 SET POINT COMPENSATION 21 4 RO...

Page 5: ...energy economizers Summer freecooling Winter freecooling Winter freeheating RECO recovery of energy from air extracted from the building on external finned coils FRECO recovery of energy from the condensers of supermarket food refrigeration systems Active energy economizers TRECO recover of thermodynamic energy between the air extracted from the building and fresh air The IATC manages the rooftop ...

Page 6: ...erature circuit 2 OCT2 B6 Return air temperature RAT B7 Outdoor air temperature OAT B8 Supply air temperature SAT N Description NO1 Compressor circuit 1 contactor NO2 Condenser fan circuit 1 NO3 Main blower Exhaust blower NO4 Compressor circuit 2 contactor NO5 Condenser fan circuit 2 NO6 Thermodynamic recovery mode TRECO NO7 Thermodynamic recovery control TRECO NO8 General alarm NO9 Electrical Hea...

Page 7: ...e 1 ID12 Circuit 2 electronic pressure reducing valve ID13 High pressure switch circuit 1 ID14 High pressure switch circuit 2 N Description ID1 Alarm feedback of the active recovery TRECO ID2 Not used ID3 FRECO anti freeze security ID4 Not used 2 2 2 ANALOGUE INPUTS 2 2 2 1 EXPANSION BOARD N Description Code B1 Low pressure transducer circuit 1 EP1 B2 Low pressure transducer circuit 2 EP2 B3 Defro...

Page 8: ...NO13 Cycle reversing solenoid valve circuit 2 all seasons N Description Y1 Electronic expansion valve circuit 1 Y2 Electronic expansion valve circuit 2 Y3 Economizer damper Y4 Heating valve N Description NO1 Thermodynamic recovery ON OFF TRECO NO2 Thermodynamic recovery mode TRECO NO3 Not used NO4 Not used N Description Y1 FRECO valve 2 3 1 DIGITAL INPUTS N Description D1 On off control B2 Mix air...

Page 9: ...erature RAT summer setpoint and RAT winter setpoint Auto change differential summer mode RAT winter setpoint and RAT summer setpoint Auto change differential winter mode A differential is used to avoid constant summer winter switching Moreover automatic changeover can change the mode only one time each 30 minutes 4 From PC Supervisor if selected 5 From PLAN network if the unit is configured as sla...

Page 10: ...FF if the hour is outside the band or the current day is programmed OFF The unit is ON if all the following conditions are encountered If the unit is connected to a supervisor If ON OFF by supervisor is active via the Service menu If the communication parameters are configured via the Service menu If the supervisor sends ON The unit is OFF is the supervisor sends OFF The unit is ON if all the foll...

Page 11: ...e first to switch OFF and the first compressor of one circuit to switch ON will be the first to switch OFF When a compressor is requested to start the following conditions are observed The first circuit to stop will be the first to start In the selected circuit the compressor that has been OFF for a longer time will be the first one to switch ON The first compressor to switch ON is the first one t...

Page 12: ...ure conditions are favourable with respect to the temperature of the room air This control is not available without the ECONOMIZER 2 or 3 dampers Temperature control option The compressor cycling is driven by different delays Compressor start up delay after main blower has been started the compressor will switch ON only when the blower is ON for about 10 seconds Minimum compressor OFF time it make...

Page 13: ...rd operation Winter STP 21 C FreeC_Offset 2 C FreeC_Diff 2 C If the offset is set null or negative freeheating can be made to start before the set point Winter freecooling is useful in shopping centres during operation in winter where overcrowding inevitably causes temperature to exceed the set point meaning the place needs cooling as opposed to heating Therefore for the job of cooling external co...

Page 14: ...0 210 3 6 4 NATURAL COOLING COMPRESSOR OPERATION In some cases the natural cooling conditions are filled but the thermal load of the building does not cool down the building enough In these conditions the thermodynamic circuits are used as assistance for natural cooling In order to protect the thermodynamic circuit a limited number of compressors can operate ...

Page 15: ...sible to the Enthalpy set point to save energy The following conditions may occur Opening the damper will be a suitable response in either of the conditions illustrated above 3 4 since external enthalpy is nearer to the enthalpy set point than internal enthalpy STPENS Enthalpy set point KJ ENI Indoor enthalpy KJ ENE External enthalpy KJ In case number 5 illustrated above indoor enthalpy is nearer ...

Page 16: ...ature starts to increase to the point of exceeding supply set point differential then both the external damper and heating valve revert to normal operating mode the minimum limit on supply air during winter mode does not interact with compressor operation Winter mode When supply air temperature drops below the supply set point differential the winter freecooling is disabled the heating valve is fo...

Page 17: ...th a hysteresis of 1 C default values A minimum compressor is operating No freecooling No de frosting The flaps are open at least for TRECO new air for more than 100 seconds In heat mode thermodynamic recovery is activated if all the following conditions are met The indoor temperature is above 15 C with a hysteresis of 1 C default values A minimum compressor is operating No freeheating No de frost...

Page 18: ...LOP security 16 SysAer 3 10 2 SECONDARY CONTROLLER The TRECO is authorized to start up if the mix air temperature MAT is greater than 5 C in winter less than 40 C in winter If these conditions are not activated TRECO does not start up An out of range message is displayed on the home page No error message is sent to the main regulator 3 10 3 OPERATING LIMITS The active recovery controller manages t...

Page 19: ... outdoor air temperature can be set to configure the auxiliary heating element as an extra heater standard or to replace the thermodynamic heating Below this limit the auxiliary heating element replaces the thermodynamic heating which is also enabled to run if the auxiliary heating capacity is not sufficient By default this limit is set to 30 C If set to a high value 30 C for example the auxiliary...

Page 20: ... flow through the hot water coil according to the figure below 3 11 2 HOT WATER COIL 3 11 1 AUXILIARY ELECTRICAL HEATING ELEMENTS This function is only available with the Electrical Heaters 2 stages option Auxiliary electrical heating elements are controlled by room air temperature as illustrated in the figure below provided the following conditions are met The unit is in winter mode Electrical He...

Page 21: ...pply Air Temperature limitation If the supplied air is too high this function can proportionally reduce the burner capacity as the figure below The supply setpoint is set to 65 C and the differential to 10 C The gas burner can also be stopped by Alarm generated by the burner internal electronic board and which is sent to the main controller stop the gas burner operation until manual reset on both ...

Page 22: ...atable deactivated Gas stage 1 Gas stage 2 20 SysAer 3 11 4 GAS BURNER TWO STAGE In Winter mode two contacts control the gas burner stages as shown in the following diagram Maximum Supply Air Temperature limitation If the supplied air is too high this function can limit activation of one or both the burner stages as the figure below The supply setpoint is set to 65 C and the differential to 10 C ...

Page 23: ...rease the comfort Compensation varies the control set point according to external temperature This function is available with the external air temperature sensor Set point compensation differs between winter mode and summer mode in terms of the type of action and the parameters employed 3 12 SET POINT COMPENSATION Compensation Positive differential Example with manual Cooling setpoint 24 C Compens...

Page 24: ...is in winter mode STPCOMP Compensation set point C COMPM Maximum compensation C DIFFC Compensation differential C TEXT External temperature C 4 ROOM AIR QUALITY CONTROL Room air quality control opens the external damper to increase the percentage of fresh air when the room air is too much polluted compared to the IAQ Indoor Air Quality sensor setpoint This function is available only with the IAQ s...

Page 25: ... menu For each day of the week a parameter is set that controls the unit s switching ON and OFF Each day at midnight the controller will check whether the variable related to that day is set to ON or OFF and will switch the unit ON or OFF accordingly Example Weekly scheduling enabled Unit running on Monday ON Unit running on Tuesday ON Unit running on Wednesday ON Unit running on Thursday ON Unit ...

Page 26: ... when the unit is on demand compressors freecooling and OFF if there is no demand Summer compressors start enabling in unoccupied mode it is possible to force the compressors OFF Typically with an Economizer and in summer mode this parameter gives the possibility to take advantage of the freecooling if possible at night but also not to allow the compressors to start That way the electric consumpti...

Page 27: ...ition cursor on 0 0 on display This terminal features the alarm key which indicates the alarm condition and the prog key which tells the user that he is entering the unit s configurations 5 minutes after the last key is pressed the application automatically calls up the main screen and switches off the display s LEDs and backlighting The application program s user interface includes screens that c...

Page 28: ...e two communication boards optional have to be added at controller and display sides to relay the signal The semi graphic terminal is connected to the controller using the supplied 80cm telephone cable between the back of the terminal and the J10 plug of the controller For other applications it is possible to extend the distance between the terminal and the controller Up to 50m using a 6 wire shie...

Page 29: ...it running as stand alone or master its PLAN address must be 1 If the PLAN is enabled PLAN alarms can be generated and in the Master Slave configuration the slaves always run with the data sent by the master unit IMPORTANT If a unit configured as PLAN slave is disconnected before configuring it as stand alone or if the PLAN network fails the slave unit s will continue to run as slave with the last...

Page 30: ...l PLAN elements must have different addresses For the Master Slave configuration with 20 units connected 1 master 19 slaves and 3 displays for example the units must have following addresses from 1 to 20 and the displays must have the addresses 30 to 32 With one display it is preferable to set the address to 32 The connection between boards in PLAN is carried out using a 0 33 to 0 5 mm AWG20 22 sh...

Page 31: ...edure 2 To modify the controller address with a display whose address is 0 Power the controller pressing the UP ENTER and DOWN keys simultaneously the following screen will be displayed 2 or 3 seconds later Press the ENTER button to enter the display address setting field and press two times the DOWN key to have the following screen Press ENTER Display Address changed must appear then power down t...

Page 32: ...r not Once the controller is started 25 seconds after power up and after the Self test screen then the screen must be empty press simultaneously the UP ENTER and DOWN keys the following screen will appear Press ENTER to enter the Display address setting field Change the display address by pressing the UP and DOWN buttons Press ENTER If you have empty screen or NO LINK or Display Address changed pr...

Page 33: ...lay the parameters of each unit with one display In the main menu Prg key select the UNIT SELECTION item The following screen will be displayed By pressing ENTER the display will jump to the next available address of controller in the PLAN network It is not possible to directly select the unit to be displayed In the display address of Trm1 put the address of the display 32 for the example Press EN...

Page 34: ...ns the user to the previous menu This function is very important if a setting is inadvertently modified UP DOWN These buttons have two functions 1 In a menu they are used to move up and down the list of possible options 2 They can change the value of a setting when it has been selected ENTER This button has three functions 1 It is used to access a submenu 2 Activate the modification of a setting 3...

Page 35: ...layed and accessed according to the access level To change the access level go to the Access menu and enter the password corresponding to the level The first line of all the screens integrates the following Information Screen title Number of the active line number of lines of the menu Access level Final user Installer Maintenance To change the access level go to the Access menu and enter the passw...

Page 36: ...mmunication overview Français Deutsch English 1 3 English Français English SMS language Modem Save SD Alarm snapshot HMI Language 1 5 Language selection 10 40 05 Versions Communications Language selection 03 02 2016 1 4 Commissioning Access Services Commissioning Status 1 4 Main Menu 10 36 0 1 Controler BSP App version 1 2 Versions Enabled IPErr IPErr Advanced SZEFRW HNJ5G RZHH3 RFA7Z 6W Activatio...

Page 37: ... 10 Save load 0 0 h 0 0 0 h Reversing valve Compressor 1 3 Operation hours Save load Operation hours 1 2 Service Access Services Commissioning Status 1 4 Main Menu 35 SysAer 7 9 SERVICE MENU Limited access with the Maintenance profile 7 9 1 OPERATION TIME On this screen is used to view for each compressor the operation time the number of cycles for each reversing valve the operation time 7 9 2 SAV...

Page 38: ...geover OFF Manual No AL18 Air Flow switch General OFF Manual Settable AL19 Clock broken or no clock Manual No View only AL20 B1 sensor fail RAH or IAQ EP 1 Circuit 1 OFF Manual 60 s Stops the functions Needed for EEV1 AL21 B2 sensor fail OAH EP 2 Circuit 2 OFF Manual 60 s Stops the functions Needed for EEV2 AL22 B3 sensor fail OCT 1 Circuit 1 OFF in winter mode Manual 60 s Stops the functions AL23...

Page 39: ...e on each Slave unit Manual Yes fixed AL37 AL66 General alarm of each Plan unit Automatic No View only AL67 B1 sensor fail I O expansion RAH OR IAQ Manual 60 s Stops the functions AL68 B2 sensor fail I O expansion IAH Manual 60 s Stops the functions AL69 B3 sensor fail I O expansion OAT Manual 60 s Stops the functions AL70 B4 sensor fail I O expansion SAT Manual 60 s Stops the functions AL71 MI O ...

Page 40: ... main menu Prg button and press ENTER the UP DOWN keys can be used to scroll up and down the list of alarms logged The number of events in the top left corner increases every time there is a new alarm The maximum number of events that can be logged is 150 Once the logging limit is reached new events overwrite the older ones The alarm log can be cleared completely via the maintenance menu 8 3 ALARM...

Page 41: ...rm The screen displays the latest alarm activated with a description the date and time at which it occurred If the list of alarms is displayed pressing the Alarm button takes you to the alarm history Here again the detail of the alarms can be displayed max 50 Pressing the button a second time gives access to the list of alarms and warnings that are currently active You can scroll the alarm list an...

Page 42: ...ut off FTCR circuit breaker closed x x HP switch HP secu HP pressure switch activated HP pressure switch deactivated removed x x HPMax envelope HPMax envelop Cool mode and Condensation P 40 bar Condensation P 40 bar and return air T drop x Heat mode and Condensation P 40 bar Condensation P 40 bar and mix air T drop x HPMin envelope HPMin envelop Cool mode and Condensation P 16 bar Condensation P 1...

Page 43: ... outputs can be checked in the Inputs Outputs menu To see the inputs exactly as they are read by the controller without any setting or conversion look at the Maintenance menu Moreover it is possible to activate manually all the analogue and the digital outputs when the unit is switched OFF via the Maintenance menu Be careful When operating manually the digital outputs the basic protections are sti...

Page 44: ...ssor 2 h 1000 10000 200000 Threshold to generate a compressor 1 circuit 2 maintenance alarm A9 Compressor 2B h 1000 10000 200000 Threshold to generate a compressor 2 circuit 2 maintenance alarm Working time reset Aa Unit N Y N Reset unit working time Ab Compressor 1 N Y N Reset compressor 1 circuit 1 working time Compressor 1B N Y N Reset compressor 2 circuit 1 working time Ac Compressor 2 N Y N R...

Page 45: ... test the operation of the components when the unit is OFF Basic securities are still active in this mode To start the compressors it is recommended to start the main fan before When the compressor s are started the EEV when equipped are automatically managed except if manually driven see analog outputs Compressor 1 OFF ON OFF Compressor 1B OFF ON OFF Ar Compressor 2 OFF ON OFF Compressor 2B OFF O...

Page 46: ...See Alarm log part INPUTS OUTPUTS Temperature sensors I1 Room C Gives the value of each sensor if present including the manual offset of the Maintenace part Outdoor C Supply C option EEV circuit 1 and 2 dedicated sensors available only with RTC units I2 EEV1 Electronic Expansion Valve opening circuit 1 EP1 bar Evaporating Pressure circuit 1 CST1 C Suction Temperature circuit 1 EEV2 Electronic Expa...

Page 47: ... Heater 1 OFF ON option Electrical Heater 2 OFF ON option Ic Reversing valve 1 OFF ON Circuit 1 Reversing valve 2 OFF ON Circuit2 Condenser s fan s 1 OFF ON Circuit 1 if the fan s are not driven by Inverter Condenser s fan s 2 OFF ON Circuit2 if the fan s are not driven by Inverter Id Main fan OFF ON Exhaust return blower OFF ON option Heat recovery pump OFF ON option Burner control OFF ON option ...

Page 48: ... Enable N Y N Daily scheduling enabling If Yes the unit operation will be driven by the hour In all cases the unit must be set ON manually screen N0 to allow the unit starting by scheduling If OFF manually the unit will always stay OFF Type ON OFF Unoccupied ON OFF When enabling the daily scheduling 2 zones are defined in and out the band in K6 When choosing Unit On Off the unit will be OFF outsid...

Page 49: ...conomizer is able to close completely if free cooling heating is not available instead of staying open at a set position in Pi screen K5 Summer setpoint C STP low limit Sum 26 0 STP high limit For setpoints limits see P4 and S0 S1 This setpoint replaces the standard summer setpoint when the unoccupied mode is active and the hour is outside the band Winter setpoint C STP low limit 19 0 STP high lim...

Page 50: ... STP low limit 21 0 STP high limit Winter Winter setpoint always used except when the unoccupied mode is active and the hour is outside the band Otherwise see screen K5 STP high limit winter Summer STP 2 Humidity setpoint S2 Summer rH Hum low limit 45 0 Hum high limit Summer setpoint for humidity Available only if room humidity sensor is connected This parameter is used in Summer mode for dehumidi...

Page 51: ... Regulation type P PI P Choice of the regulation type for the compressors P proportional or PI Proportional Integral Integration constant s 0 600 1800 Integral constant for PI Be careful when modifying this parameter P6 Summer C 0 2 0 15 0 Temperature regulation band that corresponds to the proportionnal parameter in the P or PI summer regulation See the Compressors control part Winter C 0 2 0 15 ...

Page 52: ... Y FreeCooling FreeHeating in temp Pe Differential C 0 4 0 20 0 Minimum difference between the room and the outdoor temperatures to allow freecooling or freeheating in temperature Summer FreeCooling in temp Pf Offset C 9 9 2 0 9 9 Difference compared to the summer setpoint to start to open the Economizer Differential C 9 9 2 0 9 9 Economizer regulation band for summer freecooling Winter FreeHeatin...

Page 53: ...izer will stay totally closed until the room temperature reaches the setpoint Pj Smoke detection Closed Open Closed Economizer behaviour when smoke is detected option Open corresponds to 100 Supply air temperature limitation Pk Enabling N Y Y This function is active in summer and winter including winter freecooling option Setpoint C 0 8 0 30 0 Minimum supply temperature In summer below this value ...

Page 54: ...nt switching between the modes Summer room temp threshold Pr High C 10 0 32 0 50 0 High and low room temperature limits in summer mode to generate a room Low C 10 0 14 0 50 0 temperature alarm Winter room temp threshold Ps High C 10 0 28 0 50 0 High and low room temperature limits in winter mode to generate a room Low C 10 0 14 0 50 0 temperature alarm Room high low temp Pt Alarm delay min 0 30 60...

Page 55: ...en the defrost temperature exceeds 14 C but it will also end if it lasts more than the maximum duration Clock presence PC Clock board presence N Y Y This parameter allows to activate the clock board functions when it is not factory mounted Switching to yes when the board is absent will generate an alarm option Remote controls Digital inputs PD ON OFF ID5 N Y N Activation of the digital input which...

Page 56: ...modem PJ Ring number 0 3 9 Displayed with Analog Modem Number of rings before the modems connection Modem type Tone Impulse Tone SMS PK SMS text Text that will appear on each alarm SMS in addition to the standard screens with the hour and date of appearance alarm code and explanation PLAN network PL Enable N Y N PLAN is to connect directly up to 31 units plus 1 display with not necessarily a super...

Page 57: ...n the unit compressors on demand PT Summer Winter ID2 ID12 B5 B5 Digital input configuration for Summer Winter selection Electrical heaters ID2 ID12 B6 ID2 Digital input configuration to run the electrical heaters Smoke detector PU Activation N N Smoke detector activation New password PV New Service pwd 0 9999 MANUFACTURER Factory reserved ON OFF UNIT Unit status N0 Unit status See the Unit ON OFF...

Page 58: ...for scheduling the unit is in unoccupied mode if the hour is outside the programmed hour band Starting appears for 5 seconds at unit start up M1 Hour Date Air quality Room humidity Outdoor temp r H C The room air quality is displayed in priority if the option has been chosen The room humidity is displayed in second priority if the dehumidification or the Economizer management in enthalpy have been...

Page 59: ... Only displayed if the air quality sensor is connected and the Economizer has been activated M5 Electrical heaters Only displayed if electrical heaters are present in the unit means at least one heater is active Heat valve Only displayed if hot water coil with modulating valve is present in the unit means the valve is opened Gas burner Only displayed if gas burner is present in the unit means the ...

Page 60: ...English 58 SysAer ...

Page 61: ......

Page 62: ...des None As part of our ongoing product improvement programme our products are subject to change without prior notice Non contractual photos Systemair AC SAS Route de Verneuil 27570 Tillières sur Avre FRANCE 33 0 2 32 60 61 00 6 33 0 2 32 32 55 13 ...

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