CLIMATIC™ 50 User manual - Lennox

More documents

Recommendations

Info

COMPRESSORS Function From a room temperature need (Capacity Factor) the compressors are started and stopped with a determined sequence in order to minimize the anti short cycle protection effect and to equalize the operating time. Description Compressors Start/Stop sequences. This sequence is set by the memorized compressor operating time and it also includes the other compressors back-up function, if they are not available. For circuits with tandem compressors, it is possible to favour the unit performance, COP, rather than the compressor operating time balance (3642). The compressor starts if all the following conditions are satisfied: • The unit, the compressor and the circuit do not have major faults. • The control requires the starting of the compressor. • The compressor has the lowest operating time among the stand by compressors. • The compressor has not been brought into service for at least 6 minutes. Every compressor state can be checked on the following menus: 2512, 2522, 2532…, 2562 To check the operating time of each compressor use menus: 2519, 2529….2569 To reset an operating time counter, put the DS50 cursor on the line and press the key `Enter' during 20 seconds. Compressor operation authorization. The user may choose to limit the operation of the compressors by using contacts or set points modification. Outdoor temperature Cooling mode Stop of all compressors if the outdoor temperature is lower than the threshold (3612) Stop of 50% of the compressors if the outdoor temperature is lower than the threshold (3611) Note: if the option `Low Ambient Kit' is activated (3822) these two functionalities are disabled. Heating mode (Heat pump) Stop of all compressors if the outdoor temperature is higher than the threshold (3613) Set points Stop of one or several compressors if the compressor number is not displayed in the address (3641) Cooling mode Stop of all compressors if the instruction (3355) is set to [No] Limitation to 50% of the compressors if the instruction (3359) is set to [Yes] Immediate stop of 50% of the compressors if the instruction (3643) is set to [Yes] Heating mode (Heat pump) Stop of all the compressors if the instruction (3356) is set to [No] Note: Address 3355 and 3356 can be set differently for zones A, B, C, Uno or BMS Note: The address 3359 can be set differently for zones Uno or BMS Free contacts (Optional - See Customized Input / Output (BE.50)) Stop of one or several compressors if the compressor number is not displayed in the address (3641) Stop of 50% of the compressors if the contact [Dis. 50%Cp] is close. Stop of all the compressors if the contact [Dis. Cp/Ah] or [Dis. Comp] is close. High pressure offloading (FLEXY 2 tandem only) With tandem compressors, it is possible to reduce the circuit capacity by stopping one of the two compressors before the high pressure reaches its limits in order to keep a partial capacity with high outdoor temperature. If the condensing pressure is higher than 40b and continuously increases with all the fans in operation at full speed, 1 compressor of the considered circuit is stopped. CLIMATIC50 – IOM – Rooftops/ Aircoolair CL50-ROOFTOPS-IOM-1107-E 20
3355 � Compressors authorization in cooling mode, adjustment by zone. 3356 � Compressors authorization in heating mode, adjustment by zone. 3359 � Limitation to 50% of the compressors, in Unoccupation and BMS mode. 3611 � Low outdoor temperature threshold for limitation to 50% of the compressors, in cooling mode 3612 � Low outdoor temperature threshold for stopping all compressors in cooling mode. 3613 � High outdoor temperature threshold for stopping all compressors in heating mode.. 3641 � Compressors authorization. 3642 � Rotation mode choice. 3643 � Off loading of 50% of the compressors. CLIMATIC50 – IOM – Rooftops/ Aircoolair CL50-ROOFTOPS-IOM-1107-E 21
Page 1: User manual CLIMATIC 50 ROOFTOP & A
Page 4 and 5: TABLE OF CONTENTS Page INTRODUCTION
Page 6 and 7: WIRING CONNECTIONS IMPORTANT WARNIN
Page 8 and 9: J14 and J15 set between1-2 : Connec
Page 10 and 11: CONFIGURATION Function LENNOX© pro
Page 12 and 13: SCHEDULING - CLOCK SETTING CLOCK SE
Page 14 and 15: ANTICIPATION Function This allows a
Page 16 and 17: Dead zone reduction speed in If set
Page 18 and 19: FRESH AIR REHEATING SET POINT Funct
Page 20 and 21: FRESH AIR DAMPER - Free-Cooling Fun
Page 24 and 25: DEFROST - Heat Pump Function Avoid
Page 26 and 27: HOT WATER CIRCULATOR The Climatic m
Page 28 and 29: 3851 � Setting of connector BM50-
Page 30 and 31: Insufficient airflow Description Er
Page 32 and 33: Ambient Temperature and Humidity, O
Page 34 and 35: Overheating of Electrical Heating E
Page 36 and 37: External Humidifier fault Descripti
Page 38 and 39: Faulty Probes and Sensors Descripti
Page 40 and 41: Condenser fans Description The cond
Page 42 and 43: Smoke Detector Description Error co
Page 44 and 45: The compressors shut down on HP Cut
Page 46 and 47: Reference Temperature, Humidity and
Page 48 and 49: Bits: �03H/04H/06H/07H/08H/09H/0A
Page 50 and 51: DC50 COMFORT & DM50 MULTI CUSTOMER
Page 52 and 53: Sdc.4 It will revert back to the ma
Page 54 and 55: Sdc.3 Sdc.12 Sdc.13 Start/stop 1 we
Page 56 and 57: Navigation in the screens Main menu
Page 58 and 59: Special dignostic screens In oirder
Page 60 and 61: T.15 T.16 T.17 T.15 Master/Slave fu
Page 62 and 63: Menu Item Menu Item Menu Item Menu
Page 70 and 71: ‘Flexy II’ roof-top range J5.ID
Page 72 and 73:
BMS Adress Tables ModBus, LonWorks
Page 74 and 75:
@ (hexa) @ (deci) DS50 06H 6 R/W 10
Page 76 and 77:
BMS address table for LonWorks Type
Page 78:
CL50-ROOFTOP-IOM-1107-E www.lennoxe
show all

CLIMATIC™ 50 User manual - Lennox

Create successful ePaper yourself

Delete template?

Save as template?