Master Bilt SPT-28 Manuale delle Istruzioni

™H-IM-79E September 2007 Part No. 25001401Beacon II™ Refrigeration SystemsInstallation andOperation ManualReplaces

10Start-Up OperationMultiple Systems With Multiple Evaporators (Requires A Smart Controller) • Check all wiring connections to be sure they are

11Initial Power On At the initial application of power to the system, the compressor and the evaporator fans will be in a 4 minute hold-off cycle and

12Programming & ReviewingProgramming And Reviewing Settings / Changes “PROGRAM REVIEW” ITEMS A-E - Set Defrost type (Air or ELE) rEF

13 • Defrost Type – “A-E ” - Selection is made for air defrost or electric defrost coil. This will automatically set the system factory de

14Programming & ReviewingFORCEDEFROSTRESETTIMEMONITORFORCESERVICE Use the “MONITOR” button to review these items: SUP - Superheat

15Programming & ReviewingLocking The Beacon II Board The Beacon II board is lockable to prevent programmed setting changes by unauthorized personn

16 STATUS INDICATOR LED • ERRORS E 1 - Room temperature sensor shorted, open or not installed E 2 - Defrost temperature sensor shorte

17Defrost Delay Start Time Example: The system is rst powered up at 8:00 AM and is programmed for 4 defrost per day. The user would like the rst def

18Electric Defrost Mode When a defrost is initiated, the EEV closes, the compressor is allowed to pumpdown and shut off. The evaporator fans are cycle

19Error IndicatorAir Defrost fan motors must be wired through the fan relay on the Beacon II board for this to be effective on Air Defrost systems. Th

2© 2007, Heatcraft Refrigeration Products LLC

20Checking Operation Of Expansion Valve (EEV) To check if the expansion valve is closing properly: Install a pressure gauge-set to suction line at

21Power Failures In the event of a power failure Beacon II will automatically close the expansion valve to prevent refrigerant from migrating througho

22System DefaultsTable 2. System Defaults PARAMETERS CODE AIR ELECTRIC Refrigerant rEF R-22 R-404A Box Temperature bot 35°F -10°F Superhe

23InterLink Replacement Parts ListTable 3. InterLink Replacement Parts List PART DESCRIPTION PART NUMBER Beacon II Control Board 28910101

24Beacon II Troubleshooting GuideDiagnosticsExpansion Valve Capacity Part Number Valve 100 BTUH 100 BTUH 100 BTUH 100 BTUH 29320003 ESVB-

25Beacon II Troubleshooting Guide (continued)Diagnostics Part Number Valve 100 BTUH 100 BTUH 100 BTUH 100 BTUH 29320003 ESVB-1 0.68 816

26Beacon II Troubleshooting Guide (continued)Masterin outSlave 1in outSlave 2in outSlave 3in out123in outMasterin outSlave 1in outSlave

27Beacon II Troubleshooting Guide (continued)Diagnostics PROBLEM Step ACTION ITEM IF OK IF NOT OK 1.

28Wiring

29Wiring

3Beacon II™ Board LayoutBEACON II™ BOARDHeaterRelayFanRelayLEDDisplayRoomSensorDefrostSensorSuctionSensorSuctionPressureExpansionValveConnectionSelect

30Wiring

31Wiring

32Wiring

33Wiring

34EVAPORATORS All evaporator units should be checked once a month or more often for proper defrosting because the amount and pattern of frosting can v

35Service RecordDate of Start-upLocation AddressCONDENSING UNITMODEL #SERIAL #COOLER UNITMODEL #SERIAL #FREEZER UNITMODEL #SERIAL #ELECTRICAL• Check

Since product improvement is a continuing effort, we reserve the right to make changes in specifications without notice.CLIMATECONTROLCommercial Refri

4Installation Tips • Use a minimum 18 gauge wire for all low voltage connections • The Beacon II board gets its 24 VAC power supply f

5The electric expansion valve and the suction temperature sensor on the suction line are factory installed. Care must be taken when brazing these line

6Each Beacon II board power is supplied by a transformer in the evaporator on which it is mounted. Do not run any 24 VAC wires between Beacon II boar

7Box Temperature Control Settings • There is an on board room thermostat on the Beacon II board which can be adjusted to the desired room

8CU MM = Master Evaporator CU= Condensing unitStart-Up OperationSingle System With 1 Evaporator • Check all wiring connections to be sure th

9Single System With Multiple Evaporators • Check all wiring connections to be sure they are correct and tight. • On the condensing unit