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UM PAC HT 01-N1GB

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3. aa 56 3 2 2 NUMBER E al 3 10 COMPRESSOR CRANKCASE RESTE AMAN EE 57 3 11 NEW INSTALLATION PASSWORD rar PP EUN 58 4 ALARM LIST AVAILABLE ON THE HT DISPLAY 59 MENU DESCRIPTION snoot ratios 63 IN ORDER TO ENSURE THAT APPLIANCE SAFETY PROTECTION SYSTEMS REMAIN ACTIVE COMPRESSOR SUMP HEATER ANTI FREEZING PROTECTION CIRCULATION PUMP ANTI SEIZING PROTECTION WE STRONGLY ADVISE AGAINST SWITCHINGOFF THE POWER SUPPLY TO THE PAC HT WHEN 15 NOT IN USE FOR HEATING 1 MANUAL USER GUIDE The purpose of this manual is to explain the various functions and possibilities offered by the PAC HT regulation system The manual also provides a detailed description of all the parameters accessible via the graphic display integrated in the appliance as well as a few parameters to be set at the time of start up 1 1 ICONS Several different icons are present throughout the document WARNING Warns of a risk to proper operation of the PAC HT of a strong recommendation associated with occupant comfort or energy savings or of important points of which a good understanding is necessary TIP Highlights how a simple parameter setting can offer improved installation performance or make start up easier NOTE Attracts the reader s attention to a special point 1 2 MODIFIABLE PARAMETERS In this docume
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6. Room T 17 E gt setpoint at 20 C 9 gt production 15 O I Heating DHW HEATING mode MODE MODE i I 04 30 05 00 05 30 06 00 06 30 07 00 07 30 08 00 08 30 09 00 09 30 10 00 10 30 11 00 11 30 12 00 TIME OF DAY 25 3 DHW schedulings via off peak hours input or daily scheduling without consideration for Heating demand Off peak input connected or default daily scheduling Comfort between 23100 and O5h00 in the morning Eco the rest of the time Comfort and Eco setpoints at 50 C and 45 C default settings 60 58 56 DHW SPT U 54 emp exceeded due to system inertia suse d E r 52 a er DAR lt D o E je 4 cunas I 48 a RN LUI Rn D m e BI K ns CE Ee EA E 44 H DHW gt Eco SPT 2 C d gt No restart in Eco mode 42 DHW lt Eco SPT 2 C Restart in Eco mode 40 22 23 OO Ol 02 04 05 06 07 OS 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 OO 0 TIME OF DAY Off peak input connected or daily scheduling with a restart at midday Comfort between and 5 00 in the morning and between 12h30 and 14h00 Eco the rest of the time Comfort and Eco setpoints at 50 and 45 default settings 60 58 56 O
7. qe n i O s ______ _ ___ 10 S PAS DAA as N NN A A A M SS 25 20 15 10 5 0 5 10 15 20 25 Outdoor temperature C 17 2 5 2 CHOICE OF COMPRESSOR IN RELATION TO THE HOUSE S THERMAL LOAD HEATING MODE 2 5 2 1 C2 SMALL COMPRESSOR DEFAULT BALANCE POINT The heat curve parameters enable the regulation system to determine the outdoor temperature above which the capacity from the small compressor will be sufficient to heat the house to the desired temperature setpoint This balance point viewable on screen L3 is around 6 C with the default heat curve depending on the model of PAC HT MAIN MENU ON OFF SUMMER WINTER Default balance L3 point outd temp Comp 2 small 06 0 C OPERATING TIME BOILER RELIEF INSTALLATION MENU Outdoor temperature gt Balance point Small compressor Outdoor temperature lt Balance point mi Full capacity Full capacity means both compressor stages or large compressor in operation H the operating limits of the two stage compressor prevent it from starting then the large compressor will be selected In this way the PAC HT engages the compressor s best suited to achieve the most appropriate Comfort Electricity consumption compromise When conditions allow the PAC HT benefits from the small compressor operating on its own which is half as powerful to provide sufficient capacity for heating needs while guarante
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22. 42 3 2 ANTI FREEZE FUNCTION When the PAC HT is powered on it automatically protects itself against the risk of freezing Only two parameters have to be configured Min Water T Default setting 6 C and Differential Default setting On WATER PUMP Ci3 ANTI FREEZE Nin water T O OC Differential S OC 3 2 1 WATER PUMP When the pump is not operating the PAC HT continuously CHECKS the water temperature the lower temperature between the water entering and leaving temperatures in order to restart the pump if needed gt Minimum Water entering leaving lt Min water T A water pump starts gt Minimum Water entering leaving gt Min water T Differential mi water pump stops If there is a fault on the water entering sensor Min water T is offset by 4 C therefore the default setting becomes 10 to ensure that the anti freeze function operates based on the leaving water temperature the hottest as it is at the top of the plate heat exchanger In the event of a simultaneous fault on both water temperature sensors the pump is forced to operate continuously 3 2 2 PLATE HEAT EXCHANGER PROTECTION The plate heat exchanger is protected against freezing by an electric heater affixed to one side This resistance is activated via a mechanical pipe circuit thermostat when the latter detects a water temperature below 3 C 3 2 3 COMPRESSOR MANAGEMENT The compressors are not authorised to start if leaving tempe
23. BOILER RELIEF INSTALLATION MENU gt Heat On in WINTER mode means that the heating is enabled gt Heat Off in SUMMER mode means that the heating is shut down ON OFF SUM WIN 00 MODE WIN Heat On On Off MAIN OFF 2 2 2 3 REMOTE SUMMER WINTER INPUT ID9 ON CONNECTOR J7 Power on screen Main screens im PROG ESC gt Config SUM WIN With a SUMMER WINTER configuration by digital input the PAC HT acts in the same way as by using STANDBY mode on the ambience terminal or SUMMER WINTER on the appliance display MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE Domestic nor ware ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF IS Open INSTALLATION MENU gt NO Closed Summer or NC Open Winter NO Normally Open the contact switches the PAC HT OFF to SUMMER mode when it is closed via parameterisation as a default setting therefore the PAC remains in WINTER mode if this contact is not wired NC Normally closed This contact switches the appliance to SUMMER mode when it INSTALLATION MENU M WATER PUMP WATER SETPOINT REMOTE ON OFF DIGITAL INPUT Config SUM WIN NO DOMESTIC HOT WATER ELECTRIC HEATER ENTER B Screen Reference uw CIA RELIEF INSTALLATION CONFIG Closed Summer MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD 2 2 3 PEAK ENERGY DAY CONFIGURATION It is important to co
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25. This setting should be adopted in the case of an outdoor circulation pump not managed ESC by the PAC HT In this case the appliance no longer manages the ON OFF control of the RK circulation pump but only controls the water flow when the machine is ON Therefore the external pump can only be stopped when the PAC HT is OFF via the appliance screen or PROG the ON OFF input otherwise the alarm ALO6 Lack of water flow will appear MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE B DOMESTIC HOT WATER WATER PUMP Cil By the PAC HT ON on demand sl ROOM TERMINAL ALARM LOG OPERATING TIME RELIEF INSTALLATION MENU Screen Reference asswor INSTALLATION MENU M WATER PUMP WATER SETPOINT DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MAINTENANCE WATER PUMP External COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD The water flow detection starts from the moment when the PAC HT is ON Any interruption in water flow will cause the complete stop of the appliance until the alarm is manually reset 3 1 2 PUMP ENTIRELY MANAGED BY THE PAC HT This is the default parameter setting In this case PAC HT manages the ON OFF Anti Freeze and Anti Seize functions 3 1 2 1 OPERATING MODES 3 1 2 1 1 ON IN WINTER This is the default parameter setting The pump is stopped when the PAC HT is OFF or in Summer mode and is operat
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27. Status displayed Significance on P1 No room need No need in terms of ambience settings Refer to the 8 HEAT CURVE AND ROOM TEMPERATURE MANAGEMENT page 11 The PAC HT is on standby and is waiting for a demand for heating from the ambience terminal Waiting comp Waiting for compressor timers The PAC is awaiting the end of the start up time delay for a compressor before being able to restart refer to 8 OPERATIONAL TECHNICAL LIMITATIONS in the Compressor Management section Waiting water T Waiting water Temperature A demand for heating has been received but the leaving water temperature is too high to restart the compressor s compared with the water temperature setpoint calculated by the heat curve May also appear at the time of taking the outdoor temperature reference Starting The HT is in start up phase It may be awaiting the end of the time delay on water pump start up Only one compressor is operating while the other is in alarm Unit ON The compressor s are operating Alarm stop The PAC HT has been shut down by an alarm Refer to the 8 ALARM LIST AVAILABLE ON THE PAC HT DISPLAY page 59 OFF by Contact The PAC HT is completely shut down via the remote ON OFF digital input Refer to the 9 ON OFF page 7 Room therm OFF The PAC HT is in forced Summer operating mode Domestic Hot Water DHW production only via the ambience terminal set to STANDBY mode 1 refer to the ambience terminal documentation OFF
28. e g case of restarting after a power cut with a lot of ice on the coil the anticipated de icing sequence is started immediately without taking account of Time passed 47 3 4 3 DE ICING SEQUENCE When all the de icing conditions are present the following sequence is activated gt Compressors stop for 1 minute gt De icing valve changes over to cold position gt large Cl compressor starts gt The compressor stops when coil temperature gt 14 during 10 consecutive seconds gt De icing valve changes over to hot position gt Both fans operate for 30 seconds gt The compressors restart after a stop of at least 1 minute The normal condition for an end to the de icing sequence 15 the coil temperature above 14 However other abnormal conditions may stop the de icing cycle gt De icing time too long longer than 10 minutes The alarm AL 22 15 for information purposes only and automatically disappears after 2 minutes gt Leaving water temperature lt 10 C risk of the plate exchanger freezing Just as the alarm AL 22 the alarm AL 23 will disappear automatically after 2 minutes Action should be taken if these two de icing malfunctions occur repeatedly Care must be taken to ensure that the PAC HT de ices correctly correct water flow no obstruction of the airflow over the outdoor coil During de icing a pressostat manages the restarting of the upper fan in order to control the condensing pressur
29. gt Room temperature 20 C gt Offset per C of room temperature 5 C 12 RADIATOR HEAT CURVE 70 Default heat curve not corrected by 65 Base water SPT room temperature setting Heat curve offset by the room setpoint at 21 C 60 Actual heat curve offset by the variance s between the 21 setpoint and t the 20 measured temperature e 03 2 o 3 9 50 5 a 45 2 2 40 gt 2 35 4 30 25 20 15 10 0 5 10 15 20 Outdoor temperature C 2 3 3 1 3 PAC HT ON OFF CONTROL BY ROOM TEMPERATURE Main screens P1 u P3 T When the room terminal is connected it is possible to adjust the ON OFF control parameters of the PAC HT in relation to the room temperature While the terminal does not act to limit operation no ON OFF operation via a relay and while the heat curve can be offset negatively when the room temperature exceeds the desired setpoint the appliance should still stop functioning if the room temperature rises too much MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE Domestic Hor water o ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU INSTALLATION MENU MI WATER PUMP WATER SETPOINT DOMESTIC HOT WATER ELECTRIC HEATER ENTER BOILER RELIEF B Screen Reference INSTALLATION CONFIG im CIA
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31. HT alone there is a deficit of 4 5kW 12 5kW 17kW therefore the water slowly cools down and with the PAC HT boiler there is a surplus of 19 5kW 12 5kw 24kW 17kW therefore the water heats up very quickly Note We do not take into account the radiators emissivity that changes the capacity restored to the circuit in relation to the water temperature In this example the PAC HT always remains in operation whereas the boiler operates cyclically 75 70 Boiler setpoint w HT leaving water Temp A Boiler leaving Temp enteringlemp 65 Boiler ON OFF 26 O 60 t 2 lt gt es 27 pcc E ui 20 Y E 2 7 Lu E E 28 SS lt 45 Pd ipee 4 D 525 7 2 EE 2 40 PAC HT ON PAC HT ON PAC HT ON 3 BOILER ON BOILER OFF BOILER ON 30 22 00 22 07 22 14 22 21 22 28 22 35 TIME OF DAY 2 8 2 4 BOILER RELIEF OPERATION IN THE EVENT OF AN ALARM ON THE PAC HT In the event of a fault on the PAC HT just as with the electric heater it is possible that the user does not become aware of the problem as the boiler substitutes itself for the compressors For this reason the logic is altered slightly if an alarm is detec
32. If it is forgotten the heater is automatically deactivated after 10 minutes 3 7 7 ELECTRIC HEATER Screen S dedicated to the electric heater is only available if this function has been activated via the screen EH In the same way as the DHW resistance the two stages of the electrical heater are cut off automatically after 1O minutes It is possible to activate the two stages of the electric heater separately but only if the water pump has been operating for at least 40 seconds beforehand without any interruption in the water flow If this is not the case the electric stages are inaccessible 3 7 8 BOILER RELIEF Screen S7 dedicated to Boiler Relief appears when this function has been activated via the screen IR The Boiler output activates the boiler operation contact The Boiler Valve output switches the boiler valve DIGIT OUTP Upper fan Lower fan DIGIT OUTP DHW valve DHW Elec heater DIGIT OUTP Electric heater Stage 1 Stage 2 DIGIT OUTP Electric heater Pump OFF ON 40s or lack of water fl DIGIT OUTP Boiler Boiler valve Info Water pump 54 ON OFF 55 ON OFF 56 OFF ON 56 57 ON OFF The message Info Water pump OFF is a warning when the PAC HT pump has not been activated manually Therefore it is preferable to start the pump manually beforehand when starting the boiler 54 3 8 OUTDOO
33. OUPUTS NEW PASSWORD 3 7 1 MANUAL OUTPUT FUNCTION ACTIVATION Before being able to activate separately each digital output you have to activate the global function the 51 screen This operation will give access to the following screens MANUAL 51 DIGITAL OUTPUTS ON MANUAL 51 DIGITAL OUTPUTS Impe OFF 3 7 2 WATER PUMP The pump can be activated via the screen 52 MAN DIGIT OUTP 52 Water pump ON Comp 4 w valve OFF Oil equ valve OFF N When it is activated manually the water flow safety system is deactivated 3 7 3 VALVES Screens 52 and 53 provide access to the outputs for the valves the compressor four way valve and the oil equalisation valve on screen S2 and the de icing valve on S3 MAN DIGIT OUTP 53 De icing valve ON heater OFF 3 7 4 COMPRESSOR CRANKCASE HEATERS The compressor crankcase heaters can be activated via the screen S3 Both heaters are driven by a single digital output 53 3 7 5 FANS The two fans can be activated separately via the screen S4 When the fan fault input is open it is impossible to activate them manually Al for Alarm then appears in the place of OFF 3 7 6 DOMESTIC HOT WATER DHW Screen S5 dedicated to DHW is only available if this function has been activated via the screen IET The DHW Valve output enables the switching test of the DHW valve The DHW Elec heater drives the DHW tank back up electric heater
34. Reducing it will lead to degraded product performance We also advise against reducing this time with the view to launching a de icing sequence quickly It is preferable to use the Manual De icing function Refer to the following 8 that avoids altering the de icing parameters The lapsed or counted down time only resets itself to zero in the case of de icing if the power to the PAC HT is switched off or under very special conditions with the appliance stopped Outdoor temperature gt 7 coil temperature gt 5 C and both compressors stopped for at least 30 minutes If the compressors stop this time is frozen and the countdown resumes when the compressors restart lf an alarm stops the de icing the time is not reset to zero and the PAC HT will attempt to proceed with a new de icing sequence after the alarm has been reset Refer to the 8 EXAMPLE OF DE ICING page 49 46 3 4 1 3 POSSIBILITY OF DE ICING WHEN THE COMPRESSORS STOP When the compressors stop either because the water or the room temperature setpoint has been reached it is possible for the PAC HT to force a de icing sequence When the compressors stop if gt Time counted down Time passed gt time limit Coil T lt lim 5minutes therefore default setting 45 minutes it is considered more worthwhile to de ice straightaway with the hot water in the Heating circuit rather than launching a de icing sequence just after compressor restarting There
35. activate simultaneously the Electrical Heater and the Boiler Relief functions as they use the same digital outputs 2 7 1 ELECTRIC HEATER FUNCTION ACTIVATION The Electric Heater function is activated via screen in the Installation menu ESC Main screens P1 PROG MAIN MENU MP ELECTRIC HEATER Enabled No ON OFF SUMMER WINTER HEAT CURVE B DOMESTIC HOT WATER ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU INSTALLATION MENU MI WATER PUMP WATER SETPOINT ENTER DOMESTIC HOT WATER B Screen Reference ELECTRIC HEATER BOILER RELIEF ELECTRIC HEATER EH1 Enabled Yes INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD 2 7 2 EMERGENCY AND BACK UP EMERGENCY COMMON FUNCTIONS These two operating modes have relatively different management systems see the 8 dedicated to each mode but some functions are common to both modes They are identified under BACK UP EMERG in the Electric heater menu screens 2 7 2 1 MANAGEMENT BY ROOM TEMPERATURE The aim of this function is as a default setting not to use the electric heaters as the compressors are used as they are intended to guarantee maximum comfort and energy savings Electric Heater management via the room temperature is linked to compressor management Refer to the 8 PAC HT ON OFF CONTROL BY ROOM TEMPERATURE page 13
36. by display The PAC HT has been completely shut down via the MAIN OFF screen OO the appliance s display Refer to the 6 ON OFF page 7 freeze protect Anti freeze protection The PAC HT is shut down and the anti freeze protection has detected an excessively low water temperature which then activates the anti freeze protection sequence Refer to the 8 ANTI FREEZE FUNCTION page 43 Water pump anti seize function activated Refer to the S WATER PUMP MANAGEMENT page 41 De icing under way Initialisation Initialisation displayed for 5 seconds when the screen lights up after power is switched on to the appliance Auto stop Automatic stop and re start of the PAC HT associated with the compressor oil equalisation protection system 2 2 ON OFF SUMMER WINTER 2 2 1 ON OFF The PAC HT con be switched to MAIN OFF via the unit display or via one digital input remote control with independent 24V AC supply refer to wiring diagrams In MAIN OFF mode the appliance provides no regulation functions other than basic protection anti freeze water pump anti seize and compressor crankcase heaters management The appliance has to be ON via the display and with the digital input for it to start apart from in the case of a blocking start up alarm 2 2 1 1 PAC HT DISPLAY ON OFF Power on screen The PAC HT may be switched to MAIN OFF from the screen OO ESC In this case the following text will be present on the P1 OFF by di
37. case where the leaving water setpoint is already limited by overall compressor operation parameters 55 C in single stage operation and 65 C in two stage operation for example The PAC HT control system will not allow the leaving water temperature to exceed its operating limits irrespective of the requested setpoint Example For a leaving water setpoint at 64 C in a Radiator application at 5 C outdoor temperature The compressors will stop at a leaving water temperature gt 65 C and not 67 C 20 2 6 DOMESTIC HOT WATER This function requires the installation of a DHW tank or a heat exchange system to supply the DHW tank plate exchanger type compatible with the capacity and the water temperatures of a PAC HT The DHW tank available as a kit guarantees effective operation of the DHW option as it includes an internal heat exchanger with a sufficient surface area over 3m and a back up heating resistance In the case of the use of a different system some functions e g Legionnaires Disease Protection will be inoperative and there is no guarantee that the satisfactory DHW temperature will be reached It is also necessary to connect a specific DHW temperature sensor to the appliance s regulation system Refer to the Installation Manual Two separate menus on the display are used for setting DHW parameters In the main menu the DHW screens provide simple everyday user access temperature setpoint timer programming whi
38. controller inputs outputs are displayed in the Maintenance menu ESC 3 6 1 SENSOR INPUTS PROG Screens 4 and M5 provide access to the 4 temperature sensors analogue inputs required for the PAC HT to operate MAIN MENU TORIO PISSUMMESAWINTER gt Water leaving temperature gt Water entering temperature gt Outdoor temperature OPERATING TIME gt BOILER RELIEF ARAN ED INSTALLATION MENU MI ENTER Ill Liesen WATER SETPOINT DOMESTIC HOT WATER a ELECTRIC HEATER E BOILER RELIEF INSTALLATION CONFIG Sereen Reference MAINTENANCE COMP MANAGEMENT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD 3 6 2 DIGITAL INPUTS Screens M8 to M12 display the status of all the digital inputs This includes the fault inputs fans water flow and the inputs that can be connected at the time of installation remote ON OFF Comfort Eco for DHW and emergency Switch for the Electric Heater and the Boiler relief gt CLOS means Closed power is supplied to the contact so no fault Coil temperature sensor at the bottom of the outdoor coil DIGITAL INPUTS Flowswitch Fans Intermediate HP gt OPEN means Open power is not supplied to the contact an alarm may appear 3 6 3 DIGITAL OUTPUTS Screens M13 to M17 indicate the status of all the digital outputs including those associated with options that can be activated Domestic Hot Water Electric Heater and Boiler Relief Screen M16 only appears if th
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41. heating application if the type of heating application has been configured Refer to the 8 RADIATORS FLOOR HEATING CONFIGURATION page 15 The control system always considers that the two stage AT is equal to 2 x AT C2 as the two stage compressor is theoretically twice as powerful as the small compressor In this way the PAC HT always operates for the right amount of time if the minimum water volume in the installation is correct and adapts to the change in compressor staging and the different not nominal water flows This does not mean that the PAC HT accepts a variable water flow but that it adapts to different heating installations in which the flow is not necessarily the recommended flow Example For a leaving temperature setpoint at 50 C in a Radiator application C2 will be authorised if Entering water T lt 43 C 50 C 5 C 2 C C1 C2 will be authorised if Entering water T lt 38 C 50 C 10 C 2 C 2 5 3 1 2 COMPRESSOR STOP Compressor stop is managed by the temperature of the leaving water in accordance with the following Leaving water T gt Leaving water setpoint Stop offset T The stop offset T is set at 3 C in the Radiator application and at 1 C in the Floor heating application Example For a leaving water setpoint of 50 C in a Radiator application The compressors will stop at a leaving water temperature gt 53 C 50 C 3 C This stop condition is not followed in the
42. heating circuit s inertia will be stronger and the rate of the rise in water temperature will be slower In this event the PAC HT will change to full capacity operation more easily with the aim of raising the water temperature faster for greater comfort 18 2 5 2 3 ONE COMPRESSOR NOT STARTING In the case where the PAC HT detects that one of the compressors has not started it will prevent any future start up of the compressor in question and automatically switch over to the other This feature ensures that a minimum of heating is provided in the residence in compressor alarm operating mode 2 5 3 MANUAL COMPRESSOR MANAGEMENT As part of PAC HT testing and maintenance it is possible to manually force the choice of one ESC or both compressors When the appliance has to start it will either automatically choose the best compressor staging or the staging chosen manually Main screens im PROG Y mainmenu wei Three manual management choices are possible ON OFF SUMMER WINTER gt 1 stage Comp 2 me Choice of C2 small compressor HEAT CURVE M gt 1 stage Comp 1 Choice of large compressor ROOM TERMINAL EE gt 2 stages meee Choice of both compressors in two stages OPERATING TIME BOILER RELIEF INSTALLATION MENU ENYER o COMP AUTO MANU CPI Single Two stage WATER SETPOINT DOMESTIC HOT WATER Auto RECOMM ENDED a ELECTRIC HEATER g BOILER RELIEF INSTALLAT
43. in terms of electricity consumption Comf Eco mngt Yes savings as the electric heater would enter into operation ECO lt 10 gt COMP EENEN 0 LI However this percentage can be reduced when the installation contains a water volume greater than the recommended volume between 200 and 250 L Increasing the percentage gt CONF BACK UP EHS Increasing the percentage e g to 30 will authorise the electric heaters to Comf Eco mngt Yes ECO 30 gt CA A REE LU start at an earlier stage and will provide greater comfort but to the detriment of energy savings 2 2 5 5 ELECTRIC HEATERS OPERATION IN THE CASE OF AN ALARM ON THE PAC HT In the event of a fault on the PAC HT and if the electric heaters has sufficient capacity it is possible that the user does not become aware of the problem as the heater takes over from the compressors In addition some functions are no longer valid if a compressor is in alarm mode For this reason the logic is altered slightly if an alarm is detected by the controller gt The Comfort Economy function is deactivated gt he compressor operating time is no longer taken into account gt n order to warn the user while ensuring an adequate level of comfort the leaving water setpoint is automatically lowered by 10 for a Radiators configuration and by 5 C for a Floor Heating configuration In this way the system forces a slightly lower level of comfort It
44. is an exception in relation to the stop by MAIN OFF display or remote OFF input In this case the PAC HT is immediately forced to stop and the de icing sequence is not started 3 4 2 ANTICIPATED DE ICING Under certain unfavourable outdoor conditions e g freezing fog it is possible that the PAC HT would need to start an anticipated de icing sequence To start an anticipated de icing sequence the following conditions are required gt Entering water Temperature gt 22 C gt Outdoor Temperature lt 10 C gt Coil Temperature lt 2 C ANTICIPAT DE ICE M7 Coil Out C1 C2 17 07 Minimum delay 30min Max Coil Outd 20 0 gt Time passed gt 30 minutes Minimum delay AND Iwo stage or large compressor alone operation Outdoor Temperature Coil Temperature gt 17 C Coil Out C1 C2 Small compressor operation on its own Outdoor Temperature Coil Temperature gt 15 C Coil Out C1 C2 2 C This forces the compressors to have operated for a least 30 minutes before de icing OR Outdoor Temperature Coil Temperature gt 20 C Max Coil Outd without a time delay as the difference is too high and therefore de icing is instantaneous Therefore the principle is to anticipate the de icing sequence when the controller detects an abnormal difference between the Outdoor temperature and the Coil temperature while respecting a compressor operating time of at least 30 minutes If this difference is too high
45. is important not to force the stop of the electric heaters in the event of an extended absence even if this leads to higher electricity consumption as in this case the residence s anti freeze protection will no longer be guaranteed In the event of a fault that cannot be reset compressor fault temperature sensor failure we recommend that the Emergency mode is activated via the button on the electric heater 36 2 8 BOILER RELIEF The Boiler relief function does not require an additional control module The PAC HT can manage both dry contact boiler operation control and a 230V directional valve changeover contact Refer to the PAC wiring diagrams The logic always favours PAC HT operation while guaranteeing optimum comfort The stop of the appliance will be driven only by the maximum water temperature limit 65 C As in the case of the electric heaters an Emergency mode is available It is not possible to connect or activate simultaneously the Electric Heaters and Boiler Relief functions as they use the same digital outputs 2 8 1 RELIEF FUNCTION ACTIVATION Power on screen The Boiler Relief function is activated the screen IR1 in the Installation menu ESC Main screens im PROG MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE BOILER RELIEF IR1 Enabled No a DOMESTIC HOT WATER ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU Passwo
46. of alarm the code displayed on the alarm order of appearance appearance if room screen alarm key and on the terminal present room terminal Err xx i TSLA for Time Since Last Alarm ALO6 N 005 1 5 38 HI This is the time elapsed since the previous alarm appliance gt 0000 08h27m1 5s powered on If the power to the PAC HT has been switched off TSLA represents the time lapse since the power has been switched water flow back on Lack of Alarm description similar A to the one displayed on the alarm screen alarm key is possible to scroll through the alarms by order of appearance via the UP D and DOWN D arrows The first alarm in the log is the oldest and the last one is the most recent In the above example the alarm code 106 is the 5th to appear on this PAC HT and therefore the 5th in the log It appeared at 15h38 time read on the room terminal 8 hours 27 minutes and 15 seconds after the previous alarm This alarm is the one for Lack of water flow A TSLA of 1 second indicates that the alarm occurred at the same time as the previous alarm but it is stored in the log with the following sequence number and at a 1 second interval The time used in the log is provided by the room terminal Therefore it is important to install this terminal to have an accurate log 44 3 3 2 H2 The second screen of the log H2 is accessible via the ENTER key on the screen On the H2 screen
47. setpoint that ignores all other conditions In this event the room terminal only acts as a system limiting device In the same way the Radiator or Floor Heating configuration has no influence on operation the leaving water limitation is deactivated We STRONGLY ADVISE AGAINST running a heat pump without heat curve control constant setpoint as this will seriously affect installation performance while reducing occupant comfort Accordingly the constant setpoint control on the PAC HT should only be used in cases of very special installations or possibly during system commissioning When the manual leaving water temperature setpoint is used the default setting is 45 INSTALLATION MENU MI LEAVING WATER Sereen Reference SPT RADIATORS WATER SETPOINT DOMESTIC HOT WATER Auto RECOMMENDED Ile BOILER RELIEF INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS EE LEAVING WATER CE1 SPT RADIATORS Manual 45 C 2 4 RADIATORS FLOOR HEATING CONFIGURATION The primary aim of the PAC HT is to produce water up to 65 C in a radiator heating circuit Nevertheless it is possible to make it operate directly and provide leaving water for a floor heating system by adapting the heat curve In this case it is IMPERATIVE to change the PAC HT configuration over to Floor Heating as opposed to changing the parameters one by one to be able to benefit from the advantages of the specia
48. tank has cooled down e g during the day In this way comfort is maintained for the user while ensuring that the PAC HT operates under optimum conditions night the user just has to set the Eco temperature at 10 C minimum setting This setting corresponds to the Anti treeze protection setting Q prevent any restart of production during the day time and to produce DHW only during the These setpoints have been chosen to be compatible with compressor operation If they are increased to values beyond 55 the PAC HT will be unlikely to supply DHW at the desired temperature This will lead to the possible start up of the electric heat fitted in the DHW tank as an option and would considerably increase the system s electricity consumption In the worst case and insofar as the system s priority is to always provide DHW at the required temperature it is possible that DHW could only be produced by the electric heater These default settings guarantee that DHW will be produced without recourse to the electric heater WE STRONGLY ADVISE AGAINST INCREASING THE DHW TEMPERATURE SETPOINTS BEYOND 53 23 2 6 3 2 COMFORT ECO CHANGEOVER Power on screen To benefit from the dual temperature setpoint function the DHW mode must be configured ESC in Comf Eco The temperature setpoint point changeover can then be programmed in two different ways Main screens P1 PROG N gt Off peak hour
49. 0 Base outd 5 0 5 Outdoor temperature C 16 2 5 COMPRESSOR MANAGEMENT 2 5 1 TECHNICAL OPERATING LIMITS 2 5 1 1 IN RELATION TO OUTDOOR TEMPERATURE The outdoor temperature plays an important role in limiting the operation of the two stage system The PAC HT limits itself automatically and cannot operate in two stages at outdoor temperature gt 7 C In this case the leaving water temperature is limited at 55 C in single compressor operation in heating mode and at 60 C in Domestic Hot Water mode Refer to the 8 DHW The compressors are always subject to the following anti short cycle timers other than in an alarm situation gt Minimum ON 120 seconds gt Minimum OFF 60 seconds gt Between two starts 300 seconds 2 5 1 2 IN RELATION TO ENTERING WATER TEMPERATURE The entering water temperature also plays a role to authorise or otherwise operation in two stage mode For entering water temperature lt 23 two stage operation is never authorised e g case of commissioning Accordingly the PAC HT will operate in single stage mode without a minimum limitation on the entering water temperature Nevertheless we strongly advise against starting a PAC HT on a heating circuit with a water temperature below 10 C SINGLE TWO STAGE OPERATING LIMITATIONS 70 m mum IL 65 77 SE Er E TE ETRE O 5 6
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51. 43 Eege 44 nde liso 44 m AE 45 O A O 45 SOMNIS ET CEMENTERA TUE PPP 45 ole Mcr 47 os DE ICING SEQUENCE uu uu _ 48 3AA EXAMPLE OF DEN Escritas ______ ___ _____ ___ ____ ___ 49 34 5 MANUAL DEACING Ria 50 3 5 VIEWING ROOM TERMINAL EE ee 50 E 51 Et DI S S s s Sas O O ___ 51 os ORBE TAS ii les 51 E A pp O ss S 51 A o OO 51 3 6 VIEWING INPUTZOUTPU EE 52 SENSOR D Tp U u E a ea E EEEE E E E EE crore EEEE EE EEES E EE EA 52 O ut E 52 fX CM me SI LIU VT o amen 52 E I e EE 53 SL MANDALOUTPUTFUNCTIONACTIVAIION uy ta 53 AER RUME cg TOUT 53 E O A N 2 _ OE noO 53 NEE 53 E I ss II A II 54 3 7 0 DOMESTIC HOT E 54 3 7 Le 54 37 A IA TUE 54 3 8 OUTDOOR TEMPERATURE EI 55 KEN ROOM Ee 55 SP A H 55 3 8 3 NO NEED FROM ROOM TEMPERATURE OR IN SUMMER Eegen 55 KEE el 55 38 5 REMOTE OUTDOOR E 56 3 2 OPERATING TIME NUMBER OF en E 56 AA EP
52. 6 8 HEATING S DHW CHANGEOVER When the PAC HT changes from Heating mode to DHW mode the following sequence of events occurs 1 Compressors stop 2 Post pump waiting time Post pump time Default setting 605 with the water mp running MAIN MENU ON OFF SUMMER WINTER 5 HEAT CURVE D DOMESTIC HOT WATER ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF 3 Water pump stops 4 DHW valve changeover Valve time Default setting 905 Water pump runs during the pre pump waiting time Pre pump time Default setting 60s 6 One or both compressors start The changeover from DHW mode into Heating mode occurs in the same manner INSTALLATION MENU INSTALLATION MENU MI WATER PUMP WATER SETPOINT Screen Reference DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD When the valve position changes the water pump is stopped to avoid mixing the two Heating and DHW circuits even though it is a joint circuit In this way especially in summer when the Heating is stopped cold water is prevented from being dispatched to the DHW tank Heating DHW or from the hot water tank to the cold Heating circuit DHW is Heating The aim is to maximise the system s overall performance and user comfort The time for valve changeover stop or not of the water pump and the post
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54. ACK UP EMERGENCY COMMON FUNCTIONS Boiler management by room temperature is identical BOILER RELIEF IR3 Room management Additiona compressors 1 0 C I I Compressors ON OFF Room temperatur 19 5 C 20 C 20 5 C 21 C el Room temperature setpoint Additional diff m V compressors at 1 0 C ith the electric heat the Boiler Relief function is not t Compared with the electric heater as the Boiler Reliet tunction is not dependen BOILER RELIER compressor operating time a minimum demand time via the room temperature has been added This is the Minimum time on demand and the default setting is 30 minutes Minimum time on demand 30min In the previous example the boiler is considered to be in demand when the room temperature is below a value between 19 5 C et 20 C depending of the change in the temperature Just as for electric heater the room temperature management 15 entirely deactivated when the room terminal is not connected Accordinaly we stronaly advise you to install it 2 8 2 3 MANAGEMENT BY HEAT CURVE It is also possible to manage a heat curve for the boiler This function is enabled as a default setting and can disabled via the screen IR5 in the Installation menu In this case the system considers that the leaving water temperature of the PAC HT is the same as the boiler entering temperature case of a direct circuit DEE ER from the PAC HT to t
55. BACK UP EMERG EH3 Room management Additional dutt compressors 1 0 C The Additional diff compressors parameter offsets the ON OFF room setpoint of the electric heaters from that of the compressors Increasing this parameter e g to 2 0 C will reduce user comfort slightly but will also reduce electricity consumption Changing it to will guarantee maximum comfort but can significantly increase electricity consumption 32 Example For a room temperature setpoint at 20 C with the parameters Stop diff SPT and Start diff SPT at their original settings respectively 1 0 C and 0 5 C and Additional diff compressors at 1 0 C gt The electric heaters will be authorised to start if gt The compressors will be authorised to start if room room temperature lt 19 5 temperature lt 20 5 C gt The electric heaters will stop if room temperature gt gt The compressors will stop if room tempe gt 20 C gt 21 C Electric Heaters Compressors ON OFF ON OFF Room temperature 19 5 C 20 C 20 5 C 21 C Room temperature setpoint Additional diff compressors at 1 0 C 2 7 2 2 MANAGEMENT BY WATER TEMPERATURE The overall logic is that the electric heaters should operate for the shortest rature Just as for boiler relief the room temperature management is entirely deactivated when the room terminal is not connected Accordingly we strongly advise you to install it BAC
56. C E 52 6 OPERATING TIME BOILER RELIEF INSTALLATION MENU INSTALLATION MENO Screen Reference WATER PUMP im Ci5 WATER SETPOINT im CE3 DOMESTIC HOT WATER ELECTRIC HEATER EHO im EH7 _ BOILER RELIEF INSTALLATION CONFIG CH MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS 1 57 NEW PASSWORD 2 1 4 ICONS Outlet water set temperature calculated from the heat curve parameters the outdoor temperature the ambience set temperature and the variance between the set and the ambience temperature Compressor 2 small in operation Bes PAC HT in Summer mode Flashing Countdown for de icing Fixed on De icing in progress Circulation pump in operation Instantaneous outdoor temperature ref Reference outdoor temperature used by the PAC HT upper fan special management col Outdoor exchanger temperature used for the de icing countdown Domestic hot water temperature when the option is installed PAC HT in domestic hot water production mode flashing Electric heater Stage 1 in operation flashing ion ion P2 Electric heater Stage 2 in operation flashing Wi OD nic Je E ME 5 _ Boiler relief in operation flashing 2 1 5 STATUS POSSIBLITIES 14 30 65 C PI OI Fl Gi 63 2 A On screen P1 lower right hand corner the PAC HT controller provides real fe El 564C time information on its current status Unit ON
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58. ERATURE LLL N aaa 10 2 3 3 HEAT CURVE AND ROOM TEMPERATURE MANAGEMENT u os 11 2 3 4 MANUAL LEAVING WATER TEMPERATURE SETPOINT CONSTANT HEAT CURVE eege ENEE 15 2 4 RADIATORS FLOOR HEATING CONFIGURATION EE 15 2 4 1 CHANGING FROM RADIATORS TO FLOOR EE ICON ge EA 15 2 422 LEAVING WATER TEMPERATURE Ee 16 E E E 17 eS A A NN A O A 17 2 5 2 CHOICE OF COMPRESSOR IN RELATION TO THE HOUSE S THERMAL LOAD HEATING MODE ri iia 18 MANUAL CONMPRESSOR e ME 19 2 6 DOMESTIC HOT WATER eene 21 DHW FUNCTION ACTIVATION EE 21 2 6 2 DHW DEMAND AND ROOM TEMPERATURE MANAGEMENT u l A A A A 21 2 6 3 COMFORT ECO TEMPERATURE SETPOINIS SCHEDULING TEE 22 ZOA QUICK HEATUP FUNG TON ULT 28 e E E ME 28 ZOO ADDITIONAL EPECTRIC HEATER MANAGEMENT m A A A Ee 29 20d LEGIONNAIRES DISEASE PROTECTION FUNCTION sisi AAA 30 DHW E HAS SEVERA AA AA LT 31 E EE 32 as rt RA A A 32 2 7 2 EMERGENCY AND BACK UP EMERGENCY COMMON FUNCTIONS ri 32 2 8 BOILER RELI EF ee 37 28 1 BOILER RELIEF FUNCTION ACTIVA Nit tata AAA AR 37 2 8 2 BOILER MANAGEMENT aa Rd A AA 37 OTHER 25 Let ei KE 41 3 1 WATER PUMP MANAGEMENT AA ANA 4 oel A MITTENS 41 312 PUMP EN TIREN GELES THAE RAC a HC RP RS 41 A O AAA 43 he CERN 43 3 2 2 PLATE HEAT EXCHANGER PROTECTION or A A AAA AAA A 43 E EE
59. INIM YIWWNS 4 OO u JJO 1V33N39 50 ag eus JJO NO JJO NO 910ui8J aut JO uolpinBijuoo 4110948 O 51055 eui SSIIOYIND 9 njoJadua e uaeiquuo 195 Y O u BDUBIELIG S1oss iduuo2 4045 JUSIGWO jes Y 0 y snu IH DVd 99 sy Jouw e ueiquio y JO aut DIA aowa JO LH DVd 94 u eqoJd y Jo jo d 5 jueiquiD PUD sul Jop siy JO 5 uOIID D SUI eu u siep ula Jo ay jo BION uouduose N 05 sJyosseud LO JO JequunN JONVNH LNIVW 01 0 r0 Q S UOISISA aguuuun 10 JO u dO aguuuun 10 ON HO P so O JdO NO buo eouni ddy aguuuun 10 440 7 Indu 14 arway AAWWAS ddO NO
60. ION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS COMP AUTO MANU CPI NEW PASSWORD Single Two stage Manual stage Comp 2 The 2 stages choice ensures that the appliance s operating limits are not exceeded If the outdoor and entering water temperature conditions do not permit the two compressors to start the PAC HT will remain inactive and the Waiting Water T message will be displayed Manual management of the compressors cannot exceed a period of 30 minutes At the end of this period the compressors management mode will revert to automatic This avoids the compressor setting being forgotten when the site is left for example 19 2 5 3 1 COMPRESSOR CONTROL IN RELATION TO WATER TEMPERATURE IN HEATING MODE 2 5 3 1 1 COMPRESSOR START UP Even though the water temperature setpoint calculated by the heat curve is that of the leaving water 65 C maximum the entering water temperature equal to the leaving water temperature as the compressors are stopped is used for start up in accordance with the following conditions Entering water lt Leaving setpoint AT compressor s 2 C AT compressor s is the T variance Leaving Entering registered when the compressors previously stopped The default values in Heating mode in the case of the power supply being switched on are 5 C with the C2 small compressor and 10 C for the two stage compressor and 3 5 C and 7 C for an Floor
61. K UP EMERG possible time while enabling the required water temperature to be reached i mo E Start diff 3 0 comfort optimisation without it being exceeded unnecessary electricity ge consumption More over the stop sequence of the electric heaters in relation diff 52 Stop diff 51 0 0 C to water temperature is offset favouring the single stage operation i e the less powerful of the two stages in addition to the compressors and avoiding unnecessary electricity consumption 3 parameters define operation of the 2 electric stages in relation to the leaving water temperature setpoint Start Diff Both heater stages are authorised to start if Leaving water T Leaving water setpoint 4 Start diff For a setpoint at 50 the heater stages are authorised to start if Leaving water lt 47 gt Stop diff 52 The second heater stage normally ON OFF Stage 1 ON OFF Stage 2 I Leaving the most powerful stage in the case of water an unequol two stage set up 2kW mS 49 50 Set outlet AkW will stop if water T Leaving water T gt Leaving water setpoint Stop diff 52 For a setpoint at 50 the 2nd heater stage will stop if Leaving water T gt 49 gt Stop diff S1 The first stage of the heater will stop if Leaving water T gt Leaving water setpoint Stop diff 51 For a setpoint at 50 C the 1st heater stage will stop
62. LER RELIEF INSTALLATION MENU INSTALLATION MENU MI WATER PUMP WATER SETPOINT DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG Screen Reference MAINTENANCE M1 m M22 COMP MANAGEMENT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD enables any short cycling problems to be identified on the installation e g in the event of insufficient Q The number of compressor starts is to be compared against their number of operating hours This water volume 3 10 COMPRESSOR CRANKCASE HEATER MANAGEMENT On the PAC HT the compressor crankcase heaters are managed by the controller according to the following rules gt One of the two compressors stopped for longer than 10 consecutive minutes gt Outdoor Temperature lt 5 C When these conditions are present power is supplied to the two heaters simultaneously both heaters are powered via the same digital output Power to the heaters is switched off when one or both of the stopped compressors restart s or when the outdoor temperature is greater than 7 C 57 3 11 NEW INSTALLATION PASSWORD lt is possible to change the Installation password via the screen This new password will replace the original password 177 for entry into the Installation menu but 177 will always work to avoid any problems in the event of the new password PROG being forgotten Main screens u MAIN MENU ON OFF SUMMER WIN
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64. MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD gt Stop diff SPT Default 1 This parameter enables the user to set the maximum difference between the room temperature and the setpoint to switch the PAC HT off For example with a default setting of 1 C this means that the appliance will stop operating if the room temperature rises above 21 C for a setpoint SPT at 20 even after reducing the heat curve by 5 C Refer to the 8 VARIANCE BETWEEN TEMPERATURE SETPOINT AND ROOM TEMPERATURE page 12 ROOM TERMINAL Connected Yes Stop diff SPT 1 0 C Start diff SPT 0 5 C 13 gt Start diff SPT Default 0 5 C This parameter enables the user to setthe room temperature offset compared with the temperature setpoint to restart the PAC HT ROOM TERMINAL o Connected Yes For example with a default setting of 0 5 C this means that the 5 i i Stop diff SPT 1 0 C appliance will restart if the room temperature falls below 20 5 C Start diff SPT 0 5 for a setpoint 20 The room will always tend to slightly warmer than the desired set temperature This offers the advantage that the regulation system will not wait for the room temperature to fall again below the setpoint and will anticipate restarting in order to avoid wide ambient temperature variations At a setpoint of 20 C the room should oscillate between 20 and 21 when the hous
65. MENT The operating limits of the two compressors in two stage operation are the same as in Heating mode as these are their technical limits However the choice between the small C2 compressor or two stage C1 C2 operation is always made to provide the best compromise between DHW temperature capacity supplied performance 70 65 60 55 50 45 40 35 30 Leaving water temperature setpoint C 25 20 SINGLE TWO STAGE OPERATING LIMITATIONS Cy 7 Z Z Z Z d 7 4 2 2 Z 7 Z Z Z Z gt 7 Z Z Z E a 2 Z p Z Z Z Z 2 Z Z g Z 2 Z Z Z 2 Z 2 2 2 d if 7 KW oy ENT ORT ra y Z Z Z Z Z Z P Aor a 2 N S N Z Z Z N S E J 7 e S EE lt Z MIU AOS AN E X 5 Z A PA S wo 7 7 N N l Z 2 Z ae 2 X oe 122 7 AAA i IS f y D Two stage min entering water SES ze Ce SE 7 3 DP OT NUR DUM UN Z M f S lt S m n a mun m wm 8 nm ukuka mm Ka m Ga RR RE umasa NN N w m ma mm stage mox leaving water T x s WW Uu tT K S c SA MM cc AS Sc x SE UD N NA N N NS N N N m Single stage max leaving water
66. N LEAD TO SIGNIFICANTLY HIGHER ENERGY CONSUMPTION HEAT CURVE IN RELATION TO OUTDOOR TEMPERATURE The following parameters enable the heat curve to be modified easily ESC v Main screens P1 u PROG MAIN MENU HEAT CURVE a DOMESTIC HOT WATER ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU Ps ON OFF SUMMER WINTER B HEAT CURVE L1 HEAT CURVE L2 TM Heat loss at Base Altitude 0 0 km Base T 07 C temp U CENTER Correction coef 0 8 Base water SPT 65 C Screen Reference gt Altitude Default setting 0 0km Setting the actual altitude is worthwhile at heights of over 500m gt Base outd T Default setting 7 C The temperature corresponds to the base or reference temperature for the region where the PAC HT is installed It is important to be aware of and to set this temperature as it has a significant impact on the heat curve For example in France it may vary from 12 C in the Vosges Eastern France to 2 C in the Var South of France region gt Corrction coef Default setting 0 8 This parameter is a correction coefficient that enables the heat curve to be modified for between seasons outdoor temperatures In fact the parameter changes the slope start point and therefore is initially used to alter the start point when the user observes an abnormally low or high room temperature compared with the set temperature du
67. NO UO 831NIM AJLNIM Kg WW xDWJ die Ul Hun 63 sinou eu JO Y Of uOIID 1 u 023 YIM 023 029 4 quo 9pow HoJuuoO JO e4n404eduue 195 au uo juo p spq HoJjuioO snonulluoO MHA yo 9210405 sinou eu JO uo sun WO 024 9pow E juaJIn gt epouu eui 96 uo Duipuedep p p j s aunjoJadua MHA 195 Juano 1 195 air pei ejep jou s eqoud MHA Sy JO 5 eui Ul JOU s 94 usym s p dsip ueeJ2g 053 poued au puz y jo 10 pug 00 76 UU LEN 330 ppung poued pue eui ur POWO jo 0S EC 00 c NO 6 SE 0153 24106 Wee 00 2 00 50 uo S ul ur y JO 10 pug Aunot PA s So 9JDAA 9JDAA FOL DIN s JOY DIN MHA 94 JO VLE N a ESA SPA HH papayas s 093 uo gt y p
68. PT DHW OFF at Comfort SPT 2 Temp exceeded due to system inertia EN N c cs DHW TEMPERATURE C 46 o ee 44 DHW lt Eco SPT 2 DEW gt Eco SPT 2 C c restart in Eco mode c Restart in Eco mode 42 40 22 23 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 00 Ol TIME OF DAY 26 Off peak input connected or default daily scheduling Comfort between 23h00 and 05h00 in the morning Eco the rest of the time set Comfort and Eco temperatures at 50 and 10 no DHW production during the day 60 DHW OFF at Comfort SPT 2 C Temp exceeded due to system inertia DHW SPT __ DHW T E EE M b lt l l I L 40 4 30 No restart during the day DHW TEMPERATURE C Eco setpoint at 10 0 22 23 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 OO OI TIME OF DAY Default scheduling settings during the week but continuous operation in Comfort mode during the weekend MONDAY ESA Seet meum FRIDAY 58 Comfort START STOP STOP START Comfort START STOP 1 00 00 05 00 cnn s 00 00 1 00 00 05 00 2 23 00 24 00 A gt J 23 00 24 00 The timer just has to be programmed specifically for Saturday and S
69. R TEMPERATURE REMOTE SENSOR MANAGEMENT As a default setting the PAC HT manages the upper fan in order to always 03 0 C P2 Eref 03 0 1 Col 09 0 C We E 52 6 C have a valid reference outdoor ref visible on screen P2 This reference temperature is very important insofar as it used to calculate the heat curve and the choice of compressor s as well as to determine their operating limits in Heating and DHW modes When the controller considers that the reference ref is no R up to date and that it is necessary to take a new value the upper fan operates for 90 seconds before replacing ref by the instantaneous outdoor temperature value For this reason there may be a difference between the reference and the instantaneous values The reference value is also updated when at least one of the compressors operates for longer than 90 second with the fans running 3 8 1 ROOM HEATING MODE In the case where there is a demand for Heating from the room temperature and if the PAC HT is stopped due to water temperature display message Waiting Water the controller will take an outdoor temperature reference every 30 minutes H one of the compressors restarts before the end of this time the reference temperature will only be updated after the compressor has been operating for 90 seconds This means that in normal operating mode in winter there is no special management of the upper fan 3 8 2 DHW MODE
70. Regulation Manual Manuel de r gulation Regelungshandbuch Manuale di regolazione Manual de regulaci n PAC HT 12 6 18 9 SOFTWARE V5 1 Air water Heat Pump Pompe Chaleur air eau W rmepumpe Luft Wasser Pompa di Calore aria acqua Bomba de Calor aire agua UM HT 01 N1GB Part number Code Teil Nummer Codice C digo 3990534GB Supersedes Annule et remplace Annulliert und ersetzt A Annulla e sostituisce Anula y sustituye None Aucun Keine Nessuno Ninguno REGULATION MANUAL MANUEL DE R GULATION REGELUNGSHANDBUCH MANUALE DI REGOLAZIONE MANUAL DE REGULACI N English CONTENTS T MANUAL USER GUIDE 3 EN De E 3 MODIFIABLE PARAMETERS sti NAS TARA AAA NI AA 3 2 MAIN FUNGHONS scort IS 4 2 SEMI GRAPHIC DISPLAY ET 4 VAN RE 4 VA 2 Ee reese oae yas tag sce zs 4 E ND II T 5 UAR CONS rn a ____ 5 NE E 2 2 ON OFF SUMMER WINTER u uuu u u A II II II A 7 22A ON OFF AM PP IAS 7 LL UNER INTER A AA Ai VM PEAK ENERGY DAY EE EE 8 2 3 HEAT CURVE INTERACTION WITH THE TENIA AA A A A 10 Ll EE 10 2 9 2 HEAT CURVE IN RELATION TO OUTDOOR TEMP
71. T A SN E Y VV N A S SY E S i lt N NS QUNM E AS ES cq cs aE s T p E E 25 20 15 10 5 0 5 10 15 20 25 Outdoor temperature C 28 2 6 5 1 OUTDOOR TEMPERATURE ABOVE 2 C AND UP TO 42 C The C2 compressor operates on its own but the maximum leaving water temperature is increased to 60 C instead of 55 C in Heating mode In this way the PAC HT does not supply surplus capacity and does ensure that the hottest water possible is available under the most efficient operating condictions Note that DHW production is allowed up to 42 C outdoor temperature with water produced at 60 C Beyond 42 outdoor temperature the PAC HT will automatically shut down to avoid damaging the compressor the same is true in Heating mode 2 6 5 2 BELOW 2 C OUTDOOR TEMPERATURE The compressors operate in two stage mode with a leaving water temperature at 65 C The PAC HT then provides its maximum capacity and maximum water temperature while maintaining good performance The small compressor will start operating if the entering water temperature is too low below 23 C e g at a PAC HT start up 2 6 5 3 COMPRESSOR NOT STARTING In this case as in Heating mode if it is possible the PAC HT will produce DHW with the compressor which is authorised to start 2 6 6 ADDITIONAL ELECTRIC HEATER MANAGEMENT The PAC HT control
72. TER OPERATING TIME BOILER RELIEF MEW NI INSTALLATION MENU INSTBPCATIGNEMENU TNI INSTALLATION WATER PUMP PASSWORD 5 WATER SETPOINT 177 DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS PW Screen Reference NEW PASSWORD When the PAC HT is being commissioned changing the new password to O saves a lot of time during installation setting when viewing the inputs outputs and when activating the manual outputs 58 4 ALARM LIST AVAILABLE ON THE PAC HT DISPLAY Software version 5 Some terms may differ depending on the software version uj ls s y pee q JO 49JD 3DUDUAJUIDYY 048 y ui epinb sisoubbIp NO y O SUuOIIDD2IJI2 ds o eui Ipu 193y Jesoy so 595 eui 159 2 spuods 1109 eui Ipu 2945 959 so 595 eui 159 H e20 daj pub SI UD U2IUM 22945 ADU SJOJOUJ Y Y AAA AAA AA AAA peeds ey wou sy esoeJou ul e ueJejip eunjpJeduue Ss yd eui 42940 Buys WO4
73. When there is a demand for DHW production Refer to the 8 DOMESTIC HOT WATER page 21 the PAC HT always ensures that it has an updated reference outdoor temperature in order not to change into DHW mode if the compressors are unable to start in the event of the DHW being too hot in the tank However the time lapse between two reference temperatures readings for DHW is 60 minutes versus 30 minutes in Heating mode Under normal DHW operating conditions i e when the setpoint is compatible with compressor operation the reference temperature will only be taken rarely and DHW production will start thereafter It the reference temperature is taken every hour and the PAC HT does not change over to DHW production it means that the setpoint has been set too high to operate the compressors If the tank is equipped with an electric heater then this will start instead of the compressors and lead to excessive electricity consumption 3 8 3 NO NEED FROM ROOM TEMPERATURE OR IN SUMMER MODE When no situation requires the compressors to start no need from room temperature or in Summer mode no demand for DHW production the reference outdoor temperature is no longer updated and this avoids unnecessary fan operation 3 8 4 DE ICING During de icing the reference outdoor temperature is frozen during 5 minutes after the de icing sequence has ended In this way the reference temperature is not influenced at all by a sharp change in outdoor temperature a
74. activated However heat curve and room temperature managements are still active Main screens P1 u There are two ways of forcing boiler relief in Emergency mode MAIN MENU ON OFF SUMMER WINTER gt Via the ICS input marked ID4 on the controller This digital input normally corresponds to the Emergency button present on the electric heater and therefore it is necessary to connect it to the appliance via a switch in the case of boiler relief refer to the wiring diagrams HEAT CURVE n DOMESTIC HOT WATER e o ROOM TERMINA ALARM LOG ENTER gt Via the display part of the main menu is devoted to this purpose in the event where the ICS input is not connected You just have to change the parameter on screen R1 from NO to YES OPERATING TIM TT BOILER RELIEF INSTALLATION MENU BOILER RELIEF R1 BOILER RELIEF R1 Back up mode No JA Back up mode Yes Boiler forced Boiler forced manually manually Activating the Emergency mode does not directly force boiler operation but it communicates to the controller that the Emergency mode is requested by the user This action will generate an information alarm AL36 for information purposes only This alarm message will disappear automatically when the Emergency mode is deactivated 40 3 OTHER FUNCTIONS 3 1 WATER PUMP MANAGEMENT It is possible to manage the water pump operation in two different ways 3 1 1 EXTERNAL
75. all the PAC HT temperature sensors are displayed with the values recorded exactly at the time of appearance of the alarm Alarm number in the log by Outdoor order of appearance Temperature 005 Out 06 1 C Temperature Entering T 54 5 C he t Leaving T 63 1 Temperature Coil Temperature dias Coil T 15 6 C Return to screen H1 by pressing the ENTER key 3 4 DE ICING The PAC HT automatically detects a need for de icing in two different ways 3 4 1 DE ICING MANAGEMENT BY TIME Power oo The principle of de icing management by time is simple When the coil temperature sensor located at the bottom of the outdoor exchanger drops below a certain limit a time lag starts counting down When this counted down time reaches a set value Default setting UR 50 minutes the controller considers that there is a need for de icing PROG MAIN MENU ON OFF SUMMER WINTER HEAT CURVE E bomestic water g ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU INSTALLATION MENU MI WATER PUMP WATER SETPOINT DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG Screen Reference MAINTENANCE M1 uw M22 COMP MANAGEMENT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD 45 3 4 1 1 TEMPERATURE FOR THE START OF THE TIME COUNTDOWN Screen M5 displays the parameters for the start of the time countdown before de icing Coi
76. and pre pump time settings can be changed via the screens IE6 and IE7 When the PAC HT is actually changing from Heating mode to DHW mode it displays No room need on NET main screen P1 In the event of doubt about actual appliance operating status the moving icon is displayed on the right of screen P2 If the PAC HT is producing DHW with the electric this icon will not appear as it is associated with the changeover of the DHW valve refer to the green warning light on the DHW tank supplied as an option In the case where the DHW tank used is not the model available as an option it is possible that the PAC HT changes to DHW mode but is unable to start the compressor s due to excessively high appliance entering water temperature In this case the PAC HT will remain in DHW mode for 15 minutes in case the entering water cools down enough for the compressor s to start and will then change to Heating mode for at least 30 minutes while activating the electric heater This avoids the appliance constantly changing from one mode to the other in case of continuous a demand for DHW possible if the DHW temperature sensor is placed incorrectly 31 2 7 INLINE ELECTRIC HEATER The inline electric heater is an option of the PAC HT that 15 not equipped with an integrated heater The PAC 5 controller can manage 2 electric heating stages in 2 different modes Emergency only and Back up Emergency It is not possible to connect or
77. at curve per degree of ambient temperature to be made up can be configured via the Heat curve offset per room C parameter The default setting is 5 C in the case of radiators Refer to the 8 RADIATORS FLOOR HEATING CONFIGURATION page 15 for further details INSTALLATION MENU MI ENTER ENTER ENTER WATER PUMP Screen Reference WATER SETPOINT im DOMESTIC HOT WATER ELECTRIC HEATER LEAVING WATER CE2 5 RADIATORS curve offset BOILER RELIEF ES ES INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT per room 5c MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD HEAT CURVE OFFSET PER C OF ROOM TEMPERATURE TO BE MADE UP RADIATOR CONFIGURATION e g 20 C setpoint and 18 C measured e g 20 C setpoint and 20 C measured 2 e g 20 C setpoint and 21 C measured Addition to heat curve C Room Temperature variance Setpoint Measured C For example this means that the room temperature setpoint is at 20 C but the measured temperature is at 19 and that the heat curve will be increased by 5 C This increase is capped at 15 C This offset will be negative if the room setpoint is exceeded Refer to the 8 PAC HT ON OFF CONTROL BY ROOM TEMPERATURE page 13 heat curve calculation example gt Default heat curve water leaving temperature at 65 C at 7 C correction coefficient at 0 8 gt Room temperature setpoint 21
78. ating conditions the function is deactivated at the end of the 1 hour OPERATING TIME d f th t 65 C period of maintaining the temperature INSTALLATION MENU INSTALLATION MENU MI ENTER ENTER WATER PUMP ANTI LEGIONELLA IE3 Enabled Yes Day Saturday Hour 01 00 WATER SETPOINT Screen Reference DOMESTIC HOT WATER MEO ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT ANTI LEGIONELLA IEA DHW setpoint 65 C Maintain time Th MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD If it is intended to use this function an electric heater must be fitted as it is the only way to attain the required DHW temperature EXAMPLE OF DHW PRODUCTION AND OPERATION OF THE LEGIONNAIRES DISEASE PROTECTION WITH THE USE OF THE ELECTRIC HEATER 70 65 EE lt eu 2 XN Re start with electric 9 heater alone 1 60 A hn Se DHW drawn off during one ke hour for the temperature lt N being maintained at 65 cc Changeover to Legionnaires a Disease Protection 55 Compressors stop at the 2 leaving water temp limit DHW SET d Delectric heater DHW T a 50 J i TIN Changeover to Comfort mode Compressors start up 17 18 19 20 21 22 23 00 01 02 03 04 05 06 TIME OF DAY 30 2
79. be increased up to 3 hours and or the Min Dif Room T for DHW start can be changed to 0 C instead of 2 C In this case the PAC HT will be able to remain in Heating mode for 3 hours or until the room temperature has reached the room setpoint However there is a risk of not having DHW at the desired temperature at the end of the off peak period for example On the other hand priority can be afforded to DHW by changing the Max delay to minute 2 6 2 3 PAC IN SUMMER MODE When the PAC HT is in Summer mode Refer to the SUMMER WINTER page 7 the room temperature is no longer taken into account and the changeover to DHW mode is instantaneous during a demand for DHW production 2 6 2 4 ROOM TERMINAL NOT CONNECTED When the room terminal is not connected to the PAC HT the changeover to DHW mode is identical to operation in Summer mode 2 6 3 COMFORT ECO TEMPERATURE SETPOINTS SCHEDULING The user can set the DHW parameters to fulfil all tyoes of needs To achieve this the PAC HT proposes two temperature setpoints Comfort and Eco as well as two operating modes pERMANENT Comfort and Comfort Economy Similarly there are TWO types of timer programming via digital input dry contact or via daily scheduling timer programming 2 6 3 1 ECO COMFORT TEMPERATURE SETPOINTS Power on screen ESC Main screens P1 P3 PROG The first screen on the DHW menu is only devoted to viewing system operation current tempera
80. contact is activated or it will no longer provide DHW Therefore the remote ON OFF input must be configured in SUMMER WINTER mode During peak hours the SUMMER mode will shut down the heating while enabling DHW to be produced as and when required This function should be combined with timer settings or the DHW off peak digital input Refer to the corresponding paragraph in the Domestic Hot Water function description 2 2 3 4 PEAK HOURS ENERGY SAVINGS WITH BOILER RELIEF AND WITH DHW PROVIDED BY THE PAC HT In this case the PAC HT can no longer manage the boiler Therefore the Boiler relief function must not be activated and the ON OFF input should be used configured in SUMMER WINTER mode The boiler must be managed directly by the off peak hours energy savings contact This implies that the boiler must be equipped with a temperature regulation system that is independent of the PAC HT 2 3 HEAT CURVE INTERACTION WITH THE ROOM TERMINAL 2 3 1 GENERAL DESCRIPTION The PAC HT continually manages law governing the temperature of the leaving water pumped into the heating system In relation to the various parameter settings the outdoor temperature and indoor ambient conditions in the residence 2 3 2 the appliance will determine the water temperature best adapted to heating needs WE STRONGLY RECOMMEND THE USE OF THE PAC HT HEAT CURVE TO GUARANTEE OPTIMUM PERFORMANCE THROUGHOUT THE YEAR CANCELLING THE HEAT CURVE CA
81. ctivated the DHW will remain in Eco mode SC MONDAY ESA Time period 2 deactivation e g case of DHW production only in the morning Comfort START STOP The START hour of this time period has to be changed to the Up 1 00 00 05 00 Down arrows 2 en Both time periods deactivated In this case the Eco mode runs continuously MONDAY ES4 during the day e g useful in a second home where the DHW mode can Comfort START STOP deactivated during the week The START hour of the time period has to 1 1 changed to that willl automatically deactivate time period 2 2 2 6 3 2 3 EXAMPLES OF DIFFERENT DHW OPERATING PATTERNS These examples are provided for information purposes only The different heating or DHW production timeframes are not necessarily representative of all possible installations These heating times are closely linked to the PAC HT s operating conditions to the type of heating emitters and the level and frequency of demand for DHW Heating and DHW mode operation in relation to scheduling restart after night time running 55 DHW gt Eco setpoint 2 C 4 End of DHW _ 50 N U L LEE I N lt SY e a CS DHW demand but room DHW SPT lt 18 C for a setpoint at gt 20 C DAVY a 35 30 22 21 20 p e 19 lt 18 Room SPT
82. d then only in the event of a major alarm on the PAC HT This digital input corresponds to the Emergency button on the heater and that should be connected the appliance When the button on the electric heater is activated it does not force the electric stages to operate but it communicates to the controller that the Emergency mode is requesting by the user The electric stages are always managed by the controller This action will generate an information alarm AL36 for information purposes only This alarm messaae will disappear automatically when the heater button is deactivated 2 7 2 4 1 MINIMUM OPERATING TIME In Emergency mode the start of the electric heaters is not linked to compressor operation and no outdoor temperature condition is required When the room and water temperature conditions are both active and when the Emergency button is activated the first electric stage can start straightaway E Min time On the other hand the operation of the second electric heater is related to the gt stage operating time of the first stage This has to operate for a period of Stage 1 Stage 1 gt 2 20min gt 2 Default setting 20 minutes before the other stage can start 34 2 7 2 5 BACK UP EMERGENCY MODE SPECIAL FEATURES 2 2 5 1 CHANGEOVER FROM EMERGENCY ONLY MODE TO BACK UP EMERGENCY MODE ELECTRIC HEATER EH2 Mode Back up Emerg T stage 1 02 T sta
83. e When the latter is too high around 24 bars the fan starts until the pressure is lowered sufficiently The fan then stops Apart from the coil temperature condition excessively long de icing or too cold leaving water the alarms such as water flow interruption can also stop the de icing sequence However if the PAC HT is already in a de icing sequence switching the system off via MAIN OFF will not stop it and the de icing will continue right until the end of the cycle 48 3 4 4 EXAMPLE OF DE ICING 20 15 Temperature C 60 50 40 30 Time counted down min 20 10 00 15 00 30 00 45 Time Time counted down Time passed Compressor 00 15 00 30 00 45 Time 49 Outdoor Temp Coil T limit Coil Temp Compressor 01 00 01 00 01 15 01 15 DE ICING z 01 30 01 30 English 3 4 5 MANUAL DE ICING Power on screen ESC v Main screens PROG y MAIN MENU ON OFF SUMMER WINTER HEAT CURVE Hor warer ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU With the PAC HT controller it is possible to force de icing manually via the Manual De icing menu The following conditions must be present gt PAC HT in MAIN OFF display and not switched ON before the end of the manual de icing sequence gt No current alarm gt Coil temperature l
84. e DHW is activated Screen M17 corresponds to the Electric Heater and Boiler Relief gt OFF signifies that the output is inactive gt ON signifies that the output is activated 52 DIGITAL OUTPUTS 1 Big Comp 2 Small Comp 4 w valve Ma Open Clos Clos M13 OFF ON ON If there is any doubt over the active or inactive status of a PAC HT component over the causes for the appearance of an alarm or a digital output associated with an option e g DHW tank heater or boiler ON OFF contact it is very worthwhile to observe the status of the inputs outputs The displayed information corresponds instantaneously to the status of what is active or not in the controller 3 7 MANUAL OUPUTS The manual Outputs menu enables manual operation of all the digital outputs on the PAC HT ESC excluding the compressors Refer to 8 MANUAL COMPRESSOR MANAGEMENT page m 19 in the COMPRESSOR MANAGEMENT chapter PROG The following conditions must be present to activate the manual Outputs function MAIN MENU MP gt PAC HT in MAIN OFF OFF via the screen 00 ON OFF SUMMER WINTER HEAT CURVE gt No de icing sequence under way D DOMESTIC HOT WATER Room TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU INSTALLATION MENU MI WATER PUMP WATER SETPOINT DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL
85. e s thermal inertia is taken into account The second advantage presents itself when the temperature is reduced for night time slow running The PAC HT will anticipate restarting e g will restart at 17 5 C when the temperature is lowered to 17 C and will enable the heating circuit to be already up to temperature when the system switches to day time running mode in the morning In this way the time taken to raise the temperature will be reduced while greatly improving comfort and maintaining the appliance s COP Coefficient Of Performance especially if the timer settings on the room terminal correspond to a peak energy day tariff from the electricity provider There is always a minimum variance of 0 5 between these two parameters 2 3 3 2 UNDECLARED ROOM TERMINAL Power on screen The room terminal is declared by default and the controller will generate an alarm when the power to the appliance is switched on when the terminal is not connected PROG CONNECTION CUT THO PAC HT TERMINAL MAIN MENU MP e A Room setpoint for ON OFF SUMMER WINTER heal curve 20 0 C ENTER Screen Reference When the room terminal is not declared or when communication has been cut with the PAC HT the heat curve is calculated as described previously in relation to the outdoor temperature as well as in relation to a room setpoint INSTALLATION MENU parameter accessible on the appliance s display via the screen THO This screen dis
86. eaters when the compressor capacity alone is sufficient to heat up the Heating circuit This is particularly useful in the case of lower night time temperatures when the PAC HT restarts with a loop of cold water In this way the electric heaters will only be called upon if the controller detects an excessively slow rise in water temperature BACK UP EH5 Comf Eco mngt Yes ECO 20 I C Default setting 2096 the best compromise between Economy and comfort means that the appliance will only authorise the electric heaters to restart if the compressor capacity is not above 120 of the housee s heat losses In other words if the compressors supply at least 2096 more capacity than is needed to heat the residence then they are going to operate on their own without the help of the electric stages Example the residence has a heat loss of the electrical heater will only start if the compressors supply less than 12kW 20 more than 10kW Above 12kW it is considered that the difference is enough to raise the Heating circuit water temperature Reducing the percentage gt ECO Reducing the percentage e g to 1096 will authorise the electric heaters to start at a later stage and will provide energy savings but to the detriment of comfort We advise against this parameter being reduced in case of big difference between night abd day setpoint BAR Re P EHS Moreover this reduction would be pointless
87. eing high performance and smoother operation This also leads to longer service life 2 5 2 2 AUTOMATIC BALANCE POINT LACK OF CAPACITY In the case where the heat curve is not entirely accurate and therefore where ESC the theoretical default balance point is also incorrect the PAC HT is designed to detect that the small compressor is inadequate to heat the house due to a lack of capacity After a few minutes operation if the water temperature is not rising fast enough the controller will start the compressor s at full capacity MAIN MENU while automatically updating the balance temperature with the current outdoor ON OF SUMMERWNTER E Sereen Reference temperature Accordingly at the next start up the PAC HT will select full capacity EE running instead of attempting to start the small compressor again a DOMESTIC HOT WATER O ROOM TERMINAL ALARM LOG OPERATING TIME Automatic balance L4 BOILER RELIEF point temp INSTALLATION MENU Comp 2 small 06 0 C Reset No The automatic balance temperature is limited by the default balance temperature 2 C It is possible to reset this automatic balance temperature It will then revert to the default value calculated by the controller screen L3 It is also possible that the controller detects a lack of capacity in the case where the volume of water in the installation is greater than the recommended volume 200 to 250 L If a very high volume is present the
88. erminal Beem temp 19 8 C gt Comfort SPT Comfort SPT 20 0 C Comfort setpoint This one is used in forced Comfort mode 45 Economy 5 and in AUTO mode gt Economy SPT 18 5 Economy setpoint This one is used in forced Night Time mode and in Auto mode 3 5 3 SCREEN TH3 gt Anti freeze SPT TERMINAL TH3 This is the Anti freeze Protection setpoint d Antifreeze SPT 12 0 gt Bef mode ch Bef mode ch 0094min This is the time in minutes before a change of operating mode Bef vac end 0000h i e the time remaining in Automatic mode before switching over from Comfort to Economy and vice versa In forced Comfort or Economy modes this time is 440 minutes gt Bef Vac end This is the time in hours remaining before the end of the Vacation Holidays mode and the return to Automatic mode 3 5 4 SCREEN TH4 Time and day of the week read on the room terminal TERMINAL PARAM TH4 Hour 16h32min18s Day Tuesday 3 5 5 SCREEN THO Refer to the S UNDECLARED ROOM TERMINAL page 14 in the chapter on CONNECTION CUT s HEAT CURVE AND ROOM TEMPERATURE MANAGEMENT EI TE ms This screen is displayed when the room terminal is deactivated in the Installation Room setpoint for heat curve 20 0 menu A Installation Config or when there is a communication fault between the terminal and the PAC HT s controller 51 3 6 VIEWING INPUT OUTPUTS Power on screen All the
89. exceeds the setpoint by 2 C Diff comp stop screen 8 For a setpoint at 50 C this means that the DHW temperature is going to oscillate between 48 and 52 21 2 6 2 2 DHW MANAGEMENT RELATIVE TO ROOM TEMPERATURE When the room terminal is connected the PAC HT can decide whether to give priority to Heating or DHW production The DHW or Heating priority can be configured via two parameters gt Min Dif Room T for DHW start Default setting 2 C If the room temperature is lower than the room setpoint minus this value the PAC HT remains in Heating mode until the room temperature is restored above this limit For example for a room setpoint of 20 C the switchover to DHW will only occur if the room temperature is above 18 during 5 consecutive minutes DOM HOT WATER IES Min dif Room T for DHW start 2 0 delay 060min gt Max delay Detault setting 60 minutes Beyond this period of demand tor DHW production the PAC HT will automatically switch to DHW mode irrespective of the room temperature This time period set at 60 minutes is a good compromise between heating comfort and readily available domestic hot water Moreover if the timer has been programmed or if an off peak hours electricity relay has been connected to the PAC HT this set up ensures that the optimum time period for DHW production is not missed To afford greater priority to Heating tor example the Max delay can just
90. ge 2 03 C ELECTRIC HEATER EH2 Mode Emergency only Tp Back up mode leaves electric heaters management under fully automatic control But the Emergency mode can always be activated via the button on the heater but this would suppose a fault on the PAC HT In this case the special features of the Back up mode are cancelled and the electric stages are managed according to Emergency only mode rules For this reason the Back up mode is actually a Back up Emergency mode 2 2 5 2 MANAGEMENT BY OUTDOOR TEMPERATURE In Back up mode the two electric stages are managed separately using the outdoor temperature Therefore it is important to know the approximate balance point for each stage i e the outdoor temperature below which electric heating capacity is required to overcome heat losses from the house ELECTRIC HEATER EH2 Mode Back up Emerg T stage 1 02 C Outd T stage 2 03 C As a default setting the 1st stage 2kW starts below 2 C outdoor temperature while the 2nd stage 4kW starts below 3 C 2 2 5 3 MINIMUM OPERATING TIME The difference compared to the Emergency mode is that the 1st stage is related EMERGENCY to a compressor operating time The 2nd stage is always authorised after the ccn d xim 15 stage has been operating for the time Stage 1 gt 2 Default setting 20 i 7 minutes Comp gt stagel 20min Stage 1 gt 2 20min Under normal operating conditions The compressor
91. he boiler However since there is no temperature sensor We on the boiler outlet the boiler leaving temperature is calculated on the basis of mirlo eh the PAC HT leaving temperature and a theoretical boiler temperature difference SIE ENS TT the Boiler delta T The default delta T is set at 15 Boiler Entering setpoint Heat curve setpoint Boiler Delta T BOILER RELIEF IR1 Enabled Yes The boiler setpoint is displayed on the first screen of the Boiler Relief menu Boiler entering setpoint 58 The boiler stops when the PAC HT leaving water temperature reaches the boiler setpoint It restarts at Boiler setpoint Start diff Default setting 570 The major difference between the Heat curve used by the boiler and by the PAC HT for the compressors is that it is not self limited at 65 C but extended for as long as neededbe If the heat curve asks for 85 C e g at 15 C outdoor temperature albeit an extreme case the boiler setpoint will be 70 85 C 15 38 Example At an outdoor temperature of 10 C the heat curve asks for 70 in the radiators case of a setting at 65 C with C outdoor temperature The PAC HT heat curve is then limited at 65 C and the boiler setpoint is at 55 C 70 C 15 C Installation Water volume 250L residence heat losses 17kW A PAC HT 18 9 model supplies 12 5kW at 10 C and the boiler installed supplies 24kW This means that with the PAC
92. he operating time of both compressors simultaneously in two stage mode This time forms part of the two other times above HEAT CURVE B DOMESTIC HOT WATER ROOM TERMINAL ENTER ALARM LOG Screen Reference OPERATING TIME TMI OPERATING TIME TM2 OPERATING TIME Comp 1 Big 001260h Heat pump GC Comp 2 Small 001876h power on 0046421 With C1 C2 001187h In this example C1 has operated for 1260h of which 1187h were in two stage mode therefore 83h on its own C2 has operated for 1876h therefore 689h on its own 1876 1187 Screen TM2 provides access to the number of hours during which the mains power to the PAC HT has been switched on During maintenance at each season change it is worthwhile noting the compressors operating times and calculating the total number of operating hours during the heating season If the number of operating hours is too high it could mean that the PAC HT is under sized for the installation 56 3 9 2 NUMBER OF STARTS A record is kept of each compressor start and every start in two stage mode STARTS M2 Comp 1 Big 004123 Comp 2 Small 007206 With C1 C2 003739 Main screens im PROG MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE cs In this example has operated for around 18 minutes on average 4123 start ups in 1 N US 260 hours C2 for 15 minutes and two stage operation has lasted 19 minutes ALARM LOG OPERATING TIME BOI
93. heat curve is only limited by the compressors operating limits Refer to the S COMPRESSOR MANAGEMENT page 17 However in the Floor Heating configuration there exists a self limiting parameter with a default setting at 45 In this way the leaving water temperature into the floor heating circuit will never exceed 45 This avoids having to cut out the mechanical limiting thermostat not supplied to be fitted by the installer MAIN MENU we that is most frequently set at 50 C ON OFF SUMMER WINTER OPERATING TIME BOILER RELIEF INSTALLATION MENU INSTALLATION MENU MI ENTER WATER PUMP Screen Reference UNDER FLOOR CE3 OUTLET WATER Maximum 45 WATER SETPOINT DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD The leaving water temperature limitation acts on the PAC HT s temperature setpoint If the limit is set at 45 C then the maximum leaving water temperature setpoint will be 44 and this value will be displayed on screen compressors stop at the set temperature 1 C refer to the 8 COMPRESSOR MANAGEMENT 17 FLOOR HEATING HEAT CURVE 36 Base water SPT 34 Correction Coef 0 5 Correction Coef 0 8 32 Correction 1 01 30 28 26 Leaving water temperature setpoint C 24 22 20 I I T T 15 1
94. if Leaving water T gt 50 C 33 2 7 2 3 LEAVING WATER TEMPERATURE LIMITATION The controller can manage function activated as a default setting the electric I BACK UP EMERG heater s leaving water temperature in a theoretical manner given there is no Max leaving limit electric heaters leaving water sensor enabled 70 Yes The controller considers that the heaters supply a capacity equivalent to that of the small compressor and therefore takes this AT as a reference value Default 5 C In this case the leaving water temperature of the heaters running at full capacity PAC HT leaving water T AT C2 small compressor gt The electric stages are authorised if PAC HT leaving water T lt 70 C AT C2 4C gt The electric stages are deactivated if PAC HT leaving water gt 70 C AT C2 2 C In the case where the water flow in the electric heaters varies greatly from that of the PAC HT in the case of a mixing tank with the heater on the heating loop it is preferable to deactivate this function as the AT C2 no longer corresponds to that of the heaters 2 7 2 4 SPECIAL FEATURES OF THE EMERGENCY ONLY MODE The Emergency only mode is the default setting GE Gap In this mode the electric heaters are not allowed to start on their own but only Mage Enrergency only after activation of the ICS input marked ID4 on the controller Refer to the wiring diagrams an
95. ilable selections When the cursor is placed in the top left hand corner of the screen it is possible to scroll through the screens available in this arborescence Finally these keys enable you to change the value of a parameter when the cursor is placed on the parameter in question ENTER On those screens where it is possible to change one or several parameters the first press on the key moves the cursor to the first parameter on the screen second press validates the current parameter and the cursor scrolls to the following parameter until it returns to the upper left hand corner 2 1 2 BACKLIGHTING All the screen keys are backlit The ALARM key diode lights up when at least one alarm is active The PROG key is lit when you are in the main menu or in one of its sub menus The ESCAPE DOWN and ENTER keys light up along with the display backlighting If no key is pressed during a 5 minute period the display automatically reverts to the first main screen P1 and all backlighting is switched off 2 1 3 MENUS The display comprises several menus Some have unrestricted access and one the Installation menu is password protected All the screens include a reference in the top right hand corner to make it easier to navigate between the different menus MAIN MENU ON OFF SUMMER WINTER 14 30 l 65 C Pl 51 Fl Gi 63 2 A 2 El 56 4C V Unit ON 03 00C Pi Giref 03 0 C Col 09 0
96. ing the rest of the time WATER PUMP Cil By the PAC HT Therefore the principle is to keep th ti ing the entire heati eretore the principle Is TO Keep e pump operating during e entire heating ON in winter period even if the room temperaturecontrol is not on demand and to shut it down for the rest of the year to make energy savings 3 1 2 1 2 ON ON DEMAND This parameter setting offers maximum energy savings The pump management is based on the ON in Winter mode but the room conditions are also taken into account When the room temperature control is no longer on demand the pump is stopped WATER PUMP cil By the PAC HT ON on demand Special attention must be given to the hydraulic circuit In fact the pump can make quite frequent ON OFF cycles short cycling and this may generate unwelcome noises in the pipes each time the pump restarts e g due to the presence of air in the circuit This parameter setting is especially recommended in the case of major heat contributions from other sources e g an open fire In this way the pump will stop on its own when the room temperature setpoint is exceeded and this will avoid the volume of water in the buffer tank from cooling down and will facilitate the restarting of the Heating circuit which can take some time when the installation s entire water volume is at the room temperature 41 3 1 2 1 3 ALWAYS ON The pump starts operating as soon as the power to the PAC HT is
97. l T is the instantaneous temperature read by the sensor located at the DE ICING PARAM M5 bottom of the outdoor exchanger known as the evaporator Coil T aa ge Coil T limit for countdown is the coil temperature limit for starting the T limit for countdown When Coil T drops below this value the time countdown starts countdown 02 0 The maximum value of this parameter 15 2 C but it changes automatically relation to the outdoor temperature in the following manner Coil Temp limit Outdoor Temp Coil Temperature limit C 20 18 16 14 12 10 8 6 4 2 0 2 4 6 Outdoor temperature C 3 4 1 2 TIME COUNTED DOWN BEFORE DE ICING When the coil temperature has remained below the Coil T limit for DE ICING PARAM M countdown for a time Coil T lt lim 50 minutes de icing starts Time configurable Coil T lt lim 50 Screen M enables the user to change the time before de icing Coil T lt lim and to view the time already counted down Time passed very useful when commissioning the PAC HT or during maintenance as you always know how much time remains before the next de icing Time passed 13min We do not recommend that the time before de icing is changed without knowledge of the actual operating conditions of the PAC HT and of heat pump systems in general Increasing this time may lead to major de icing malfunctions
98. l features of the Floor regulation system 2 4 1 CHANGING FROM RADIATORS TO FLOOR HEATING CONFIGURATION Power on screen PROG MAIN MENU MP ON OFF SUMMER WINTER OPERATING TIME BOILER RELIEF INSTALLATION MENU ENTER The PAC HT can be changed to the Floor Heating configuration via a single parameter that automatically switches all the heat curve parameters from Radiator Heating to Floor heating At the time of switchover the programme changes the leaving water setpoint at base outdoor temperature Base water SPT screen L2 from 65 C to 35 C and the Heat curve offset per room C from 5 C to 2 C screen CE2 changes the law that stops compressors relative to the leaving water temperature Refer to the 8 COMPRESSOR MANAGEMENT page 1 7 Above all the switchover activates the leaving water limitation screen CE3 Accordingly in this case no other parameters need to be changed other than to adjust the heat curve or modify the leaving water limitation MI ENTER INSTALLATION MENU INSTAL CON Fl s CH WATER PUMP eating ap plica lion WATER SETPOINT DOMESTIC HOT WATER Radiators a ELECTRIC HEATER ENTER g BOILER RELIEF B Screen Reference INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD INSTAL CONFIG CI Heating application Floor heating 15 2 4 2 LEAVING WATER TEMPERATURE LIMITATION In the Radiators configuration the
99. le the Installation menu covers the configuration choices possible at the time of PAC HT installation DHW activation setting off peak hours operation Legionnaires Disease Protection room temperature management water pump management 2 6 1 DHW FUNCTION ACTIVATION It is important to connect the DHW sensor to the controller before proceeding with the activation ESC of the DHW If this is not done DHW sensor alarm ALO4 will appear 10 seconds after the 4 activation Main screens P1 im E The function is activated the screen IET in the Installation menu MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE D DOMESTIC HOT WATER g ROOM TERMINAL DOM HOT WATER 1E1 DHW enabled No ALARM LOG OPERATING TIME RELIEF INSTALLATION MENU INSTALLATION MENU MI WATER PUMP WATER SETPOINT Screen Reference DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MAINTENANCE DOM HOT WATER DHW enabled Yes COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD 2 6 2 DHW DEMAND AND ROOM TEMPERATURE MANAGEMENT 2 6 2 1 DHW DEMAND The PAC HT considers that there is a demand for DHW production when the temperature read by the DHW sensor falls 2 C below the setpoint For example if the setpoint is 50 C there will be a demand for DHW for a temperature measured below 48 The demand for DHW is considered as satisfied when the DHW temperature
100. ler is capable of managing additional electric heater fitted inside the DHW tank Refer to the example of 8 LEGIONNAIRES DISEASE PROTECTION FUNCTION page 30 This additional heater can be used in 4 circumstances 2 6 6 1 SET TEMPERATURE UNATTAINABLE WITH THE COMPRESSORS When the PAC is already in DHW production mode with the compressor s in operation and the maximum leaving water temperature has been reached 60 C with C2 compressor or 65 C with C1 C2 the controller considers that it is no longer possible to heat the DHW via the compressors At this point if the DHW temperature is below the DHW setpoint minus 2 C e g 55 C for a setpoint of 57 C then the electric heater is authorised to operate until the DHW temperature reaches the setpoint In the same time the PAC HT will change back into Heating mode When the PAC HT is in Heating mode and a demand for DHW production appears the controller estimates whether it is possible to produce with the compressors If the DHW temperature is too high the appliance will remain in Heating mode but the electric heater will be able to operate in accordance with the previous rules It is for this reason as recommended above that it is very important not to set the DHW setpoints too high in order to avoid starting the electric heater too frequently 2 6 6 2 LEGIONNAIRES DISEASE PROTECTION FUNCTION Refer to the corresponding paragraph 2 6 6 3 QUICK HEAT UP FUNCTION Refe
101. nds information about the current temperature and the set room temperature to PAC HT which then calculates the optimal water setpoint in the following manner gt Room temperature setpoint gt Variance between the setpoint and the room temperatures gt PAC HT On Off control the room temperature 2 3 3 1 1 ROOM TEMPERATURE SETPOINT As a default setting the heat curve is calculated for a desired room temperature of 20 As opposed to a dry contact limiting room thermostat the PAC HT will alter its heat curve if the user changes the set room temperature Increasing the room temperature setpoint by one degree e g from 20 to 21 translates into an increase in the heat curve of between 2 C and 3 C 11 2 3 3 1 2 VARIANCE BETWEEN TEMPERATURE SETPOINT AND ROOM TEMPERATURE Power on screen Main screens im PROG MAIN MENU HEAT CURVE B DOMESTIC HOT WATER ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU MP ON OFF SUMMER WINTER In theory the heat curve enables a given room temperature to be maintained but the PAC HT also takes account of the variance between the measured temperature and the set temperature Accordingly the temperature rise is faster when the variance is greater e g after night time slow running Taking account of this ambient temperature variance also remedies any errors in heat curve parameter settings The increase in the he
102. nfig NO Closed Off COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS 2 2 2 SUMMER WINTER As opposed to the ON OFF control the SUMMER WINTER control enables the Domestic Hot Water function to be maintained when the heating period is over SUMMER mode In this case the water pump also operates in a special manner Refer to the 8 WATER PUMP MANAGEMENT page 41 When the appliance is in SUMMER mode the umbrella pictogram 4M appears on screen P1 To actually be in WINTER mode the appliance has to be in WINTER mode via the display the ambience terminal and the digital input If one of these three is in SUMMER mode the PAC HT will remain in SUMMER mode and will only produce DHW 2 2 2 1 SUMMER WINTER MODES ON THE ROOM TERMINAL Refer to the Standby mode 1 in the communicating room terminal manual Standby mode switches the PAC HT into SUMMER mode heating shut down This is the easiest way to switch your appliance over to SUMMER mode However if the ambience terminal is not connected switchover has to be performed via the appliance s display or by using the remote input 2 2 2 2 PAC HT SUMMER WINTER DISPLAY Power on screen ESC The appliance can be switched to and from SUMMER and WINTER mode from the screen OO Main screens P1 PROG ENTER Screen Reference MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE a DOMESTIC HOT WATER g ROOM TERMINAL ALARM LOG OPERATING TIME
103. nfigure the ON OFF or SUMMER WINTER digital input correctly if the PAC HT is used in conjunction with a peak energy day electricity contract 2 2 3 1 PEAK ENERGY DAY ONLY WITHOUT BOILER RELIEF OR DHW PROVIDED BY THE PAC HT Use the ON OFF input default parameter settings When the peak energy day shuts down the PAC HT the appliance will be closed down completely with the exception of its own safety protection systems 2 2 3 2 PEAK HOURS ENERGY SAVINGS WITH BOILER RELIEF BUT WITHOUT DHW PROVIDED BY THE PAC HT As with the previous case the ON OFF input does not require any special configuration When the Boiler relief option is enabled in the Installation menu the PAC HT will automatically activate the boiler in off peak hours energy savings mode Therefore it is not necessary to connect the off peak energy savings contact to the boiler Refer to the 8 BOILER RELIEF page 37 for further details 2 2 3 3 PEAK HOURS ENERGY SAVINGS WITHOUT BOILER RELIEF BUT WITH DHW PROVIDED BY THE PAC HT 2 2 3 3 1 NO PRODUCTION OF DHW DURING PEAK HOURS In this case the ON OFF configuration is perfectly suitable During peak hours the PAC will be completely shut down no Heating or DWH production and will resume normal operation at the end of the period 2 2 3 3 2 DHW PRODUCTION DURING PEAK HOURS PRIORITY PLACED ON DHW COMFORT RATHER THAN ENERGY SAVINGS In this case the appliance must not be OFF when the off peak hours energy savings
104. nt all the parameters that can be moditied via the PAC HT display are highlighted in bold italic All the menus screens and associated parameters are listed at the end of this manual with the reference screen the unit of measurement and with minimum maximum and default values 2 MAIN FUNCTIONS 2 1 SEMI GRAPHIC DISPLAY The terminal is a 6 button 4 line x 20 character LCD model which can display text in various sizes and icons Alarm Prog Escape Down 2 1 1 KEYPAD When you press the Alarm key the red bell is apparent if an alarm is active the first active alarm is displayed on the screen Use the UP DOWN keys to view all the active alarms Press the Alarm key a second time to cancel all alarms that can be cancelled in this manner Alarms that remain active are still displayed If no alarm is active pressing the key returns the system to the NO ALARM ACTIVE screen ESC Moves to previous level in the menu arborescence Press this to change on analogue or integer variable such as 34 5 for example as opposed to a digital variable such as Yes No to cancel the current change and return to the previous menu This function is very important if a parameter is changed by mistake PROG EI From any screen this key returns to the main menu Just as the ESCAPE key this key cancels the current change UP DOWN D D These keys have several functions In a menu they enable you to scroll through the list of ava
105. o time periods can be programmed for each day Main screens u PROG The time periods marked 1 and 2 represent the hours when the Comfort mode is activated higher setpoint START to start operation and STOP to stop operation Outside these hours the DHW will operate at the Eco setpoint i e the lower HEAT CURVE E setpol nt Screen Reference a DOMESTIC HOT WATER O ROOM TERMINAL ALARM LOG OPERATING TIME MONDAY ESA BOILER RELIEF Comfort START STOP INSTALLATION MENU T 00 00 05 00 2 23 00 24 00 24 As a default setting the Comfort mode is activated every day between Midnight and 05h00 in the morning and between 23h00 and Midnight In this way the PAC HT mainly produces DHW during the night when the demand for heating is generally reduced while benefiting from any possible off peak electricity tariff The time periods can be altered in increments of one hour while the minutes can be altered in increments of 10 minutes The display automatically requires a difference of at least one hour to be maintained between the START and STOP times to avoid inverting these two time settings START time STOP time 1 If the two time periods overlap the controller will take account of the earliest start time and the latest stop time It is also possible to use only one time period per day by deactivating time period 2 parameter to be set START time If the first time period is dea
106. ojds p juo s 01 e 023 HoJuioO jes y UOY Je o eunjpJeduue jes C I3GION3WWOOd dJ LYM D 9 gt Buuoeu jo2uj e e dn 390q UMO 1193 uo 5105 5 0 sy q peonpoud 01 Je 16970 MHA 109 OS 2 08 10 2 95 Gi jeg O LO O LO 2 N N BION uouduose e arta WW pun u J2 NU W 64 UJJD D JO adubiveddo jo ou eqoud jo LH 2DA pue ajojag wojo so ay 92015 pesdoja pejoeuuoo s e ueiquup sy eduniveddo JO pub pub epoo wojo jo ge JOur eui uo Jas 3 A jo ADG QIUSIQUID OU uo 195 uu poued s opijou 2 jo pue ayy Buluuny MO S SWI 5 owl CHL 1 195 ul JO ay jo 7 2 0 0 eun4p1eduue Buluun y MO S au DIN jes ay jo
107. operating time Comp gt Stage 1 corresponds to full capacity operation two stages or large compressor only No time is counted when the C2 compressor operates on its own insofar as the PAC HT first has to detect automatically a lack of capacity and switch to full capacity operation The compressor operating time is reset to zero when a compressor stops except for de icing mode compressor does not start There is an exception in the case of a compressor not starting In this event the operating time of the remaining compressor is taken into account In the case of de icing mode In the case of de icing as the compressors stop operating Refer to the 8 DE ICING page 45 and would therefore also stop electric heaters operation the compressor operating time is not reset to zero lt is neither counted down during de icing There are two possibilities during a de icing procedure gt f the compressor operating time was less than 20 minutes then when the compressors restart in Heating mode after the end of the de icing procedure the countdown will also restart and the electric stages will be able to restart rapidly gt compressor operating time was already over 20 minutes the 1st stage or even the 2nd was already also in operation and therefore will not be stopped during de icing 35 2 2 5 4 COMFORT ECONOMY SETTINGS This function can be deactivated via screen EH5 Its purpose is to avoid using the electric h
108. os productos pueden ser modificados sin previo aviso Fotos no contractuales
109. plays the information instead of viewing the parameters of the room terminal Refer to the 8 VIEWING ROOM TERMINAL PARAMETERS page 50 This room setpoint replaces the room setpoint of the room terminal for the heat curve calculation Naturally there is no longer any control of the room temperature but if for example this room setpoint is changed from 20 C to 21 C the heat curve will rise from 2 C to 3 C Refer to the 8 ROOM TEMPERATURE SETPOINT page 11 OPERATING TIME PROG ON OFF SUMMER WINTER If you wish not to declare the room terminal refer to the sub menu Installation Config in n the INSTALLATION menu However we strongly advise that you connect the room terminal BT othe PAC HT deeg ROOM TERMINAL om Connected Yes Stop diff SPT 1 0 C INSTALLATION MENU ENTER gt INSTALLATION MENU Start diff SPT 0 5 C WATER PUMP WATER SETPOINT DOMESTIC HOT WATER a ELECTRIC HEATER g BOILER RELIEF B Screen Reference INSTALLATION CONFIG CIA MAINTENANCE ROOM TERMINAL COMPRESSOR MNGT Connected Na MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD 14 2 3 4 MANUAL LEAVING WATER TEMPERATURE SETPOINT CONSTANT HEAT CURVE PROG NAL ME INSTALLATION MENU As a default setting the PAC HT determines the set leaving water temperature in relation to heay curve parameters and room conditions However it is possible to use a leaving water
110. r d INSTALLATION MENU MI WATER PUMP WATER SETPOINT DOMESTIC HOT WATER ER ELECTRIC HEATER y Screen Reference BOILER RELIEF IRS INSTALLATION CONFIG MAINTENANCE BOILER RELIEF IR1 Enabled Yes Boiler entering setpoint 58 C COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD 2 8 2 BOILER RELIEF MANAGEMENT 2 8 2 1 MANAGEMENT BY OUTDOOR TEMPERATURE The activation of the boiler is directly related to the outdoor temperature by the balance point Outd T for boiler start The default setting is 2 C Above this outdoor temperature the boiler will not be activated automatically BOILER RELIEF IR Qutd T for boiler start 02 C PACHT stop 20 C It is also possible to set an outdoor temperature tor the PAC HT to stop i e OutT PACHT stop The default setting is 20 C Below this outdoor temperature the appliance will be stopped automatically and the boiler will operate on its own The value of 20 C ensures that the PAC HT is always authorised to operate particularly as it has been designed to operate at such low temperature conditions Therefore as opposed to a traditional heat pump that would be shut down at 5 C outdoor temperature there is no benefit to stop the PAC HT earlier However the controller does provide for this possibility 37 2 8 2 2 MANAGEMENT BY ROOM TEMPERATURE Refer to the section Management by Room Temperature in the 8 EMERGENCY AND B
111. r to the corresponding paragraph 2 6 6 4 APPLIANCE FAULT PREVENTING START UP OF THE TWO COMPRESSORS If neither of the two compressors can provide DHW production then the electric heatER will automatically take over the role with the same setpoint 29 2 6 7 LEGIONNAIRES DISEASE PROTECTION FUNCTION This function requires the room terminal to be connected to the PAC HT If the terminal has not been connected or has been disconnected for some reason the Legionnaires Disease protection function is deactivated This function is activated as a default setting Every Saturday at 01h00 in the morning the DHW temperature will be raised to 65 C and this temperature will be maintained during Power on screen 1 hour It is possible to change the day of the week the time of the setpoint change the setpoint PROG itself although it is recommended to maintain it at 65 C and the length of time the temperature is maintained at this level This time period means that if DHW is drawn off MAIN MENU VO during one hour after the setpoint is teached causing the DHW temperature to drop below HEAT CURVE the setpoint minus 2 C then DHW production will restart until the setpoint is maintained Hor warer continuously for one hour In the unlikely event of this sequence re occuring several times B oes the Legionnaires Disease Protection function will automatically deactivate after 5 hours s Under normal oper
112. rature lt Min water T When the compressors are operating they are forced to stop if leaving temperature lt Min water T 1 C During an installation start up and if the water temperature in the Heating circuit is lower than 6 C it is always possible to reduce Min water T minimum value 15 C in order to be able to start the compressors If the PAC HT circuit water does not contain glycol we strongly advise against setting Min water T below 6 C In order to warn the user of the absolute necessity of adding glycol if Min Water T lt 3 C another screen Ci4 appears when exiting screen Ci3 This screen offers the possibility of changing this parameter after the fact WATER TEMP Cid s A ANTI FREEZE 3 C GLYCOL REQUIRED VALIDATE 2 9 C 43 3 3 ALARM LOG The PAC HT controller has a very complete alarm log that stores the last 150 ESC alarms and their codes the chronological number the time of occurrence the time lapse between each alarm and the description of the fault On another A screen H2 there are the 4 temperatures Outdoor Water entering and leaving and Coil temperatures read at the moment the alarm appears MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE RB DOMESTIC HOT WATER ENTER D ROOM TERMINAL Screen Reference ALARM LOG HiwH2 OPERATING TIME BOILER RELIEF INSTALLATION MENU 3 3 1 H1 Alarm code ALxx identical to Alarm number in the log by Time
113. rcuit at the base outdoor temperature and an ambient temperature of 20 C This temperature can be raised to well over 65 C 90 C maximum but the PAC HT will automatically limit its leaving water temperature to 65 C may be worthwhile increasing this value when using the system as a substitute for a hot water boiler Refer to the corresponding paragraph This value is automatically adjusted to 35 when the PAC HT is configured for use with floor Heating Refer to the 8 RADIATORS FLOOR HEATING CONFIGURATION page 15 10 RADIATOR HEAT CURVE PARAMETERS 70 65 Base water 5 Correction Coef 0 5 60 Correction Coef 0 8 O Correction Coef 1 0 55 E 9 50 2 9 45 o 40 5 z 35 E gt 30 25 20 T T T T T 15 10 Base T 5 0 5 10 15 20 Outdoor temperature C 2 3 3 HEAT CURVE AND ROOM TEMPERATURE MANAGEMENT The heat curve is mainly influenced by the outdoor temperature but account is also taken of ambient conditions 2 3 3 1 DECLARED ROOM TERMINAL DEFAULT It is vital for the communicating room terminal to be connected to the PAC HT to take advantage from fine and precise management of the room temperature and to ensure optimal heating system performance Refer to the installation and maintenance manual and to the communicating room terminal for wiring details The room terminal continuously se
114. ring between season periods However this coefficient has very little influence when outdoor temperatures are negative Heat loss at base outd temp Default value depending on the PAC HT model from 9 9kW to 14 9kW This capacity in kW corresponds to the residence s estimated heat losses for the given base outdoor temperature e g 7 C and for an ambient temperature of 20 It is preferable not to modify this parameter if the heat loss value is not known The maximum value of this parameter changes with the set base temperature as it actually corresponds to the capacity of the PAC HT at this same temperature plus an increase If the residence s calculated heat losses exceed the maximum permissible capacity e g 9 9kW on the model 12 6 for a 7 C outdoor temperature it is highly likely that the appliance installed will not be capable of maintaining an ambient temperature of 20 at the base outdoor temperature This parameter serves primarily to calculate the balance point outdoor temperature for the small compressor i e the outdoor temperature below which the small compressor s capacity is no longer sufficient to increase the ambient temperature around 6 C outdoor temperature at default heat curve settings The PAC HT will then opt to switch to full capacity operation mode Refer to the 8 COMPRESSOR MANAGEMENT page 17 Base water SPT Default setting 65 C This temperature is the desired outlet water temperature in the heating ci
115. s input ON OFF SUMMER WINTER gt Daily scheduling D DOMESTIC HOT WATER ROOM TERMINAL INSTALLATION MENU MI WATER PUMP WATER SETPOINT Screen Reference DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MAINTENANCE COMPRESSOR MNGT MANUAL DE ICING MANUAL OUPUTS NEW PASSWORD 2 6 3 2 1 OFF PEAK HOURS INPUT The default parameters are set on the PAC HT to use the off peak hours contact ID11 digital input on the conttroller It is also possible to configure the type of switching of this input to Normally Open NO by default or Normally Closed NC The NO parameter setting means that the DHW will use the Comfort setpoint e g at night when the contact is closed Therefore as a default if the off peak hours contact is not connected the DHW will remain permanently in Eco mode as the unwired contact is open DOM HOT WATER 2 ECO mode selection Off peak ID11 NO Closed DHW 2 6 3 2 2 DAILY SCHEDULING THIS FUNCTION REQUIRES THE ROOM TERMINAL TO BE INSTALLED gain access to the timer programming screens from the Main Menu it is previously necessary to switch the Off Peak hours ID11 parameter to Scheduling DOM HOT WATER 1E2 DOM HOT WATER IE2 ECO mode selection ECO mode selection Off peak ID11 x Scheduling NO Closed DHW The time is programmed the 7 screens ESA to 2510 available for this purpose 1 per day of the week Tw
116. sible to display on the screen of the PAC HT all the parameters that the room terminal sends to the controller via the communication bus Screen Reference THO THA 50 3 5 1 SCREEN TH 1 gt Current set room temperature setpoint f Current room This is the current room temperature setpoint that changes in relation to the mode selected and the corresponding setpoint gt Mode This is the mode selected Refer to the room terminal user manual It can display the values setpoint Mode TERMINAL PARAM TH1 20 0 C Comfort W Comfort Forced Comfort CH or Comfort in Automatic mode Auto Y Economy lower setpoint Forced Night Time Running Auto Y Vacation Holidays Parameters for this mode set via im on the room terminal The PAC HT is then in Antifreeze Protection mode for a certain time period parameter Y Anti freeze The PAC provides minimum of Heating in this mode very low room setpoint Y OFF Standby mode 1 In this case the changes to Summer mode and the umbrella MN is displayed on screen P1 In this mode the PAC HT no longer provides any or Night Time Running in Auto Heating for the house and simply provides the system safety functions anti freeze and water pump anti seize protection and especially Domestic Hot Water 3 5 2 SCREEN TH2 gt Room Temp TERMINAL PARAM TH2 This is the room temperature displayed on the room t
117. splay PROG ENTER Screen Reference MAIN MENU MP ON OFF SUMMER WINTER ON OFF SUM WIN 00 MODE WIN Heat On On Off MAIN OFF a DOMESTIC HOT WATER D ROOM TERMINAL INSTALLATION MENU 2 2 1 2 REMOTE ON OFF INPUT 109 ON THE 17 CONNECTOR Panekan It is possible to configure the ON OFF digital input as the actual ON OFF control or as the SUMMER WINTER changeover control by using two parameters on screen gt Config ON OFF or SUMMER WINTER E With an ON OFF configuration by digital input the PAC HT acts in the same way as when the ON OFF via display is used with the exception of waiting for NOME the compressor time delays that are cancelled in OFF via display In OFF the P1 HEAT CURVE screen will then display OFF by Contact SUMMER WINTER configuration Refer to the following paragraph Bet gt NO Closed Off or NC Open Off OPERATING TIME NO Normally Open the contact changes to PAC HT OFF when it is closed BOILER RELIEF Default setting therefore the PAC remains INSTALLATION MENU 5i De ON if this contact is not wired WATER SETPOINT NC Normally closed This contact switches DOMESTIC HOT WATER the appliance OFF when it is Open ELECTRIC HEATER MAIN MENU MP B DOMESTIC HOT WATER a ROOM TERMINAL ENTER BOILER RELIEF Screen Reference INSTALLATION CONFIG CH MAINTENANCE REMOTE ON OFF DIGITAL INPUT Co
118. switched WATER PUMP on and it never stops By the PAC HT Always ON 3 1 2 2 WATER FLOW DETECTION The controller checks the presence of a continuous water flow after the pump has operated for at least 25 seconds Any interruption in water flow will cause the complete stop of the appliance until the alarm is manually rearmed 3 1 2 3 TIME DELAYS Two time delays control the pump operation gt Pre pump time Default setting 120 seconds When it is managed by the PAC HT this is the minimum pump operating time before the compressors are authorised to start irrespective of the operating mode selected on screen Cil Pre pump Ci2 time 1205 Post pump time 3005 gt Post pump time Default setting 300 seconds When the pump has to stop this is the minimum operating time after the compressors have stopped 3 1 2 4 ANTI FREEZE Refer to the 8 ANTI FREEZE FUNCTION 3 1 2 5 ANTI SEIZE With this function when the pump has been stopped for a long time the PAC HT controller starts it operating at regular intervals Off time Default setting 23h and for a set time On time Default setting 120 s In this way the circulation pump never remains too long without operating and there is therefore no need for it to be un seized when the Heating installation is put back into service typically when restarting in the autumn after the summer WATER PUMP 15 5 time 23h On time 1205
119. t 9 C in order not to force a de icing sequence when the coil is already hot e g in summer MANUAL DE ICING D1 OFF A INSTALLATION MENU MI WATER PUMP Password WATER SETPOINT DOMESTIC HOT WATER ELECTRIC HEATER BOILER RELIEF INSTALLATION CONFIG MANUAL DE ICING 02 MAINTENANCE COMPRESSOR MNGT Screen Reference Start Coil 09 0 MANUAL DE ICING MANUAL OUPUTS E T Coil 12 NEW PASSWORD The condition required for de icing to end 15 the same as usual i e Coil Temperature gt 14 during 10 consecutive seconds We recommend the use of this function when you wish to check proper operation of the de icing sequence is preferable to use this function as it does not require any changes to parameters as opposed to the de icing parameters in the Maintenance menu Therefore it avoids forgetting to restore the default parameters after de icing and having to alter the sequence under normal operating conditions 3 5 VIEWING ROOM TERMINAL PARAMETERS Power on screen ESC Y Main screens P1 u PROG y MAIN MENU MP ON OFF SUMMER WINTER HEAT CURVE B DOMESTIC HOT WATER ROOM TERMINAL ALARM LOG OPERATING TIME BOILER RELIEF INSTALLATION MENU ENTER It is vital to connect the room terminal to the PAC HT in order to optimise the heat curve and thereby achieve energy savings while providing maximum comfort for occupants It is pos
120. t the level of the sensor 55 3 8 5 REMOTE OUTDOOR SENSOR The PAC HT can be equipped with a remote outdoor sensor option although automatic management of the outdoor temperature is more accurate To wire this sensor to replace the one fitted as standard on the appliance refer to the documentation Outdoor air temperature probe supplied with the kit Main screens im PROG As this new sensor will not be positioned on the PAC HT fan management is no longer MAIN MENU MP A necessary For this reason the outdoor sensor parameter should be set to Remote HEAT CURVE D DOMESTIC HOT WATER g ROOM TERMINAL INSTAL CONFIG ALARM LOG MT Outd probe Built in OPERATING TIME BOILER RELIEF ENTER BNTER PUMP WATER SETPOINT DOMESTIC HOT WATER a ELECTRIC HEATER ENTER BOILER RELIEF B Screen Reference INSTALLATION CONFIG MAINTENANCE INSTAL CONFIG Cl COMPRESSOR MNGT MANUAL DE ICING Outd probe Remote MANUAL OUPUTS NEW PASSWORD Never declare the presence of a Remote outdoor temperature snsor if it is not actually installed 3 9 OPERATING TIME NUMBER OF STARTS 3 9 1 OPERATING TIME It is possible to view the compressors operating times on screen TM ESC gt Comp 1 Big is the operating time of the C compressor s gt Comp 2 Small is the operating time of the C2 compressor Y MAIN MENU gt with 1 2 that represents t
121. ted by the controller In order to warn the user while ensuring an adequate level of comfort the leaving water temperature is automatically lowered by 10 for a Radiators configuration and by 5 C for a Floor Heating configuration In this way the system forces a slightly lower level of comfort It is important not to force the stop of the boiler in the event of an extended absence even if this leads to higher consumption as in this case the residence s anti freeze protection will no longer be guaranteed There is an exception to this rule in case of a Peak Energy Doy Refer to the following 8 If the Lack of water flow AL6 alarm is triggered the boiler is also stopped 39 2 8 2 5 PEAK ENERGY DAY CASE USE OF THE ON OFF INPUT In the event of an alarm on the PAC HT and if the ON OFF input forces the PAC HT to stop and the boiler to operate case of a Peak Energy Day then there will be no water setpoint offset When the Peak Energy Day input or ON OFF is activated the law driving the outdoor balance temperature Default setting 2 C Refer to the S MANAGEMENT BY OUTDOOR TEMPERATURE 37 of boiler substitution no longer applies The boiler is then authorised to operate at any outdoor temperature Refer to the 8 PEAK ENERGY DAY CONFIGURATION page 8 for further details 2 8 2 6 EMERGENCY MODE In Emergency mode just as in the case of Peak Energy Doy the law driving the ESC outdoor balance temperature is de
122. ture setpoint and current mode Comfort or Eco and does not enable any modifications MAIN MENU ON OFF SUMMER WINTER D se ENTER DOM HOT WATER ES DOM HOT WATER ES a DOMESTIC HOT WATER Current SPT 50 C Mode Comf Eco g ROOM TERMINAL Current moda Comf Comfort SPT 50 det Economy 5 45 OPERATING TIME BOILER RELIEF INSTALLATION MENU 22 gt Comf Eco mode Default setting The mode determines how the appliance is going to choose the DHW temperature setpoint As the default setting in Comf Eco this means that PAC HT is going to switch between the two Comfort and Economy temperature setpoints either in relation to the off peak hours status connection to the electricity meter or in relation to the daily scheduling lt is possible to configure the mode in Perm for permanet Comfort This will continuously force the DHW setpoint to the Comfort setpoint not recommended DOM HOT WATER 52 Comf Eco Comfort SPT 50 Economy SPT 45 DOM HOT WATER ES2 Mode Perm Comfort Comfort SPT 50 C gt Comfort and Eco setpoint Default settings 50 C and 45 C These are the temperature setpoints used in relation to the current mode These setpoints provide domestic hot water at the right temperature in Comfort mode e g hot water production during off peak hours at night and restart production at a lower temperature when the
123. unday in the following way SATURDAY ES9 SUNDAY ES10 Comfort START STOP Comfort START STOP l 00 00 24 00 l 00 00 24 00 2 sajen 27 Power on screen 5 hot enough as for example when you return from holidays with the PAC HT in Main screens P1 im 2 6 4 QUICK HEAT UP FUNCTION MAIN MENU MP ON OFF SUMMER WINTER O ROOM TERMINAL EAU SANITAIRE ES3 Ane CHARGE RAPIDE Non OPERATING TIME BOILER RELIEF INSTALLATION MENU B Screen Reference EAU SANITAIRE CHARGE RAPIDE This function can be used when DHW is needed in a hurry and the tank is not MAIN OFF mode or even switched off from the power supply not recommended ES3 Oui When the QUICK HEAT UP function is activated the aim is to heat DHW rapidly as possible The PAC 5 controller acts in the following manner gt The system is switched to forced DHW mode and ignores the room temperature conditions gt The DHW setpoint changes to the Comfort setpoint even is the current mode was Eco gt The electric heater is authorised to start at the same time as the compressors to provide extra heating capacity Refer to the 8 ADDITIONAL ELECTRIC HEATER MANAGEMENT page 29 When the reaches the setpoint 2 C Refer to the 8 DHW DEMAND page 21 the QUICK HEAT UP function will be automatically deactivated and the PAC HT will return to its original operating mode 2 6 5 COMPRESSOR MANAGE

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