HF61GC0276SB EVO-MRAC_GB_LENNOX
Contents
1. k N CH cO 00 ater probe offset 99 9 99 9 C ho 0 0 15 0 aximum deumidification offset Low pressure alarm reset type Semi automatic Semi automatic Manual 1 Low pressure alarm start delay 0 180 Second 1 Low pressure alarm running delay 0 180 Second 1 Low pressure alarm number of autoreset 3 830 1 Condensation control set a Condensation control offset bar N N N D co 00 N 20 D Minimum time compressor on 0 240 Second ow 0 240 00 Minimum time compressor off Minimum time compressor on compressor C gt 360 0 999 Second al Closing liquid solenoid valve offset Second C N o al o o 0 100 gt Compressor cut on Request N 0 100 gt Compressor starting speed 0 240 Compressor starting time Second k N 0 100 gt Minimum comrpessor speed Maximum comrpessor speed L 2 20 30 L 5 HF61GC0276SB EVO MRAC_GB_LENNOX co 00 o o 100 gt o o o o I I 1 I al N al o o o o 100 gt 0 100 gt 0 99 9 bar 0 99 9 bar 0 100 gt 0 240 Second Minutes al N o LENNOX LAN and networks Password 108 ee ce u Slave local Slave by SPV aster 0 255 1200 2400 4800 96002. 19200 38400 Table of alarms Table of alarms RS485 SERIAL VARIABLES MODBUS RTU PROTOCOL ONLY READ DIGITAL VARIABLES INPUT STATUS DELIVERY TEMPERATURE PROBE ALARM MI ROOM HUMIDITY PROBE ALARM AIR FLOW ALARM 8 HF61GC0276SB EVO MRAC_GB_LENNOX LENNOX NM ES ALARM BY DIGITAL INPUT B FLOODING ALARM HIGH ROOM TEMPERATURE ALARM 1 1 1 DIGITAL OUTPUT 1 STATUS DIGITAL OUTPUT 2 STATUS 3 1 ss READ WRITE DIGITAL VARIABLES COIL STATUS ADDRESS DESCRIPTION ONLY READ REGISTER INPUT REGISTER SSS E e e ES HF61GC0276SB EVO MRAC_GB_LENNOX 9 LENNOX READ WRITE REGISTER HOLDING REGISTER EE COMMUNICATION PARAMETERS Baudrate 9600 default Format none parity 8 data bit 1 stop bit 10 HF61GC0276SB EVO MRAC_GB_LENNOX LENNOX HF61GC0276SB EVO MRAC_GB_LENNOX 11 LENNOX Tutti i diritti riservati Nessuna di questa pubblicazione pu essere riprodotta senza preventivo permesso scritto da Lennox Lennox S p A si riserva il diritto di modificare le specifiche ed altre informazioni contenute in questa pubblicazione senza dover fornire notizia preventiva In nessun caso Lennox sara responsabile per ogni danno a cose e o persone che sia provocato in modo diretto o indiretto a causa dalle informazioni contenute in questa pubblicazione 12 HF61GC0276SB EVO MRAC GB LENNOX
3. LENNOX PRECISION COOLING TECHN CONTROI HF61GC0276SB EVO MRAC_GB_LENNOX User Manual Microprocessor LENNOX HF61GC0276SB EVO MRAC_GB_LENNOX LENNOX USER INTERFACE The user interface is provided with a graphical LCD display and 6 keys It allows you to perform all the operations of the program The user interface allows you to show the operating condition of the unit at any time and change the parameters Description of the keyboard The user interface PGD has 6 buttons and their use is described in the following table ALARM key Press ALARM key to enter the alarm menu IV Press PROGRAM key to enter the main menu where is possible to select the PROGRAM key items MAINTENANCE PRINTER INPUT OUTPUT CLOCK SETPOINT USER MANUFACTURER EM ESC key Press ESC key to go out from a menu and come back into the main screen UP ke Press UP key to move into the next screen or to increment the value of a y parameter ENTER key Press ENTER key to move into the next modifiable parameter field and confirm the modification DOWN key Press DOWN key to move into the previous screen or to decrement the value of a parameter HF61GC0276SB EVO MRAC_GB_LENNOX 3 LENNOX Navigation on the main menu To navigate on the main menu use the Up button and the Down button report the list of masks Compressor Comunication Set point status status active In this screen you can turn off or turn on the unit Disp
4. lay of discharge temperature read by the relative probe 4 HF61GC0276SB EVO MRAC GB LENNOX LENNOX Setting the set temperature required by the plant Display of the actual speed of the evaporator fan HF61GC0276SB EVO MRAC_GB_LENNOX LENNOX Parameter list Special value I ew prem Ten A remm CS EIERE ene ST ONOFF INVERTER High pressure device presence Scr Par Description Default Range Um YES dp NO YES Z O Low pressure device presence YES Z O Cold water coil presence YES Water valve Only cold Only cold One cold hot Two cold hot 1 Water probe presence NO YES C10 1 Z O Flooding alarm NO YES 1 Z O Fire Smoke alarm NO YES 1 Main fan type Modulating ON OFF Modulating N o Z O Z O Heater presence YES O gt Outlet probe presence YES NO YES 2 2 2 Humidity probe presence NO YES 1 External probe presence NO YES k Contro air probe Board Board Display N CH C C18 1 ON OFF by digital input YES NO YES C19 1 Clogged filter device present NO NO YES 1 Air flow or thermal switch presence YES NO YES C21 Humidifier presence NO NO YES C22 Damper presence NO NO YES C23 1 Digital output alarm logic N O N C Summer Winter selection Boa
5. rd Board Display C25 1 Select language English Italian English Deutsch C26 1 Z O O Default values reset NO YES Regulation Password 108 Minimum temperature setpoint limit 15 0 0 0 99 0 C Maximum temperature setpoint limit 38 0 0 0 99 0 C Control type Proportional Proportional Proportional Integral W Cooling proportional band 3 0 0 15 0 C Heating proportional band 0 0 15 0 C R5 1 Integral time 0 999 Second olo 0 0 15 0 Dead Zone m O alululso O D 4 gt HF61GC0276SB EVO MRAC_GB_LENNOX R7 1 lt m Humidity control NO YES ES Minimum humidity setpoint limit 5 0 100 Maximum humidity setpoint limit 5 0 100 R10 Humidity hysteresis 0 100 1 Modulating fan minimum value 0 100 1 Modulating fan maximum value 0 100 1 Air probe offset 99 9 99 9 C 1 Delivery probe offset 99 9 99 9 C R15 External air probe offset 99 9 99 9 C Humidity probe offset 50 50 2 N 1 Z O NO YES o Delivery temperature control Minimum outlet temperature limit 0 99 9 C 1 Minimum outlet temperature limit band 0 99 9 C 1 High temperature warning offset 0 0 99 9 G R21 1 0 0 99 9 C Only signalling Main fan switch off BE High temperature alarm offset 10 0 1 Flooding alarm type Only signalling R2 1 Digital input alarm delay 0 180 N N
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