Heatcraft Refrigeration Products II manuale d’uso

T ABLE of CONTENTS General Safety Information .................................. 2 Condensing Unit Specifications ........................... 2 Evaporator Specifications .................................... 3 Evaporator Placement .......................................... 4 Condensing Unit Placement ................................. 5 Condensing Un[...]

2 General Safety Information General Safety Information 1. Installation and maintenance to be performed only by certified personnel who are familiar with this type of equipment. 2. Make sure that all field wiring conforms to the requirements of the equipment and all applicable national and local codes. 3. Avoid contact with sharp edges and coil sur[...]

3 Evaporator Specifications Figure 2. T able 2. Evaporator Specification Data © Heatcraft Refrigeration Products., 2002. Figure 3. Dimensions (in.) Connections Amps WEIGHT Evaporator Model Location Fig Capacity BTUH AB WD Suct OD Liq. OD Mtrs. Htrs. (lbs.) ADT208BHB2N2K Cooler 2 20,800 77.50 65.25 --- --- 1 1/8 1/2 2.0 -- 82 ADT208BHB2N2K Cooler 2[...]

4 Evaporator Placement Figure 3. Evaporator Placement In Cooler/Freezer T ypical Layouts for Illustration (refer to build plans for actual room layout and equipment location) The ADT/LET units are draw through units. For best operation, they should be located away from entry doors and at least 18” from the wall with the fans blowing into the room[...]

5 Condensing Unit Placement Space and Location Requirements The most important consideration which must be taken into account when deciding upon the location of air- cooled equipment is the provision for a supply of ambient air to the condenser , and removal of heated air from the condensing unit or remote condenser area. Where this essential requi[...]

6 Condensing Unit Rigging Rigging Holes Refer to the building plans for construction details. Refer to the building plans for construction details. Roof Opening Flashed and Sealed T op of Roof Curb Disconnect Figure 5. Condensing Unit Rigging Adequate rigging measures must be taken to support unit weight and to protect the unit from damage during u[...]

7 Refrigeration Piping And Line Sizing Refrigeration Piping And Line Sizing The system as supplied by Heatcraft, was thoroughly cleaned and dehydrated at the factory . Foreign matter may enter the system by way of the evaporator to condensing unit piping. Therefore, care must be used during installation of the piping to prevent entrance of foreign [...]

8 Figure 8. Drain Line Refrigeration Piping Suction Lines NOTE: If the suction line must rise to the point higher than the suction connection on the evaporator , a suction line trap at the outlet of the evaporator must be provided. Horizontal suction lines should slope away from the evaporator toward the compressor at the rate of 1/4’ per 10 feet[...]

9 Figure 10. Refrigeration Piping 1. Normally , any straight run of tubing must be supported in at least two locations near each end of the run. Long runs require additional supports. The refrigerant lines should be supported and fastened properly . As a guide, 3/8 to 7/8 should be supported every 5 feet, 1-1/8 and 1-3/8 every 7 feet; and 1-5/8 and[...]

10 Refrigeration Piping 4” 4” 4” 4” 4” 4” 4” 4” 2 sets of pre-charged line sets from IMI Cornelius 2 extra circuits for stores that install additional. 2 or 4 barrel machines Hard pipe from MCCU to Bohn evaporators in ice vault & vault freezer 1 set of pre- charged lines furnished by ice manufacturer Hard pipe from MCCU to vault[...]

11 Leak Detection And Evacuation Leak T esting After all lines are connected, the entire system must be leak tested. The complete system should be pressurized to not more than 150 PSIG with refrigerant and dry nitrogen. The use of an electronic type of leak detector is highly recommended because of its greater sensitivity to small leaks. As a furth[...]

12 Field Wiring The field wiring should enter the areas as provided on the unit. The wiring diagram for each unit is located on the inside of the electrical panel door . All field wiring should be done in a professional manner and in accordance with all governing codes. Before operating unit, double check all wiring connections, including the facto[...]

13 Field Wiring W ARNING: All wiring must be done in accordance with applicable codes and local ordinances. The field wiring should enter the areas as provided on the unit. The wiring diagram for each unit is located on the inside of the electrical panel door . All field wiring should be done in a professional manner and in accordance with all gove[...]

14 Beacon II Controller Installation T ips • Use a minimum 18 gauge wire for all low voltage connections. • The Beacon II board get its 24 V AC power supply from a transformer mounted in the electrical end of each evaporator . On 208-240 volt systems the multi-tap transformer is shipped from our factory wired for 240 volts. If your supply volta[...]

15 Beacon II Controller Refrigerant Line Brazing ( CAUTION ) The electric expansion valve and the suction temperature sensor on the suction line are factory installed. Care must be taken when brazing these lines at the evaporator . T oo high a temperature may destroy these components. Heat absorbing compounds or “wet rags” must be used when bra[...]

16 Beacon II Controller Initial 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 will not start immediately . When there is a call for COOLING, the expansion valve (EEV) opens, then the compressor is started. The compressor will then run for a minimum of 2 mi[...]

17 Beacon II Controller Programming And Reviewing Settings/Changes The Program Review button is used to program, review and change all program settings for the system. Press “PROGRAM REVIEW” button. The Setpoint item will appear on the LED. After a few seconds delay the Setpoint value will display . Each time the button is pressed a different s[...]

18 Beacon II Controller Programming And Reviewing Settings/Changes (continued) Use the “PROGRAM REVIEW” button to select these items: • Defrost T ype – “A-E” – Selection is made for air defrost or electric defrost coil. This will automatically set the system factory defaults for air defrost and electric defrost. (See default settings)[...]

19 Beacon II Controller Programming And Reviewing Settings/Changes (continued) •A larm High T emperature – “ALH” – T emperature at which a high box temperature alarm will be triggered. This does not apply during defrost. Default: Electric defrost is +5 ° F and air defrost is +50 ° F. •A larm Low T emperature – “ALL” – T empera[...]

20 Beacon II Controller Programming And Reviewing Settings/Changes (continued) Use this button to “CLEAR/TEST” Pressing this button ONCE will return the LED display to the default display . With the system in the OFF mode, pressing and holding this button will start the “TEST” mode. In the “TEST” mode it will cycle through each output. [...]

21 Beacon II Controller ST A TUS INDICA TOR LED (continued) Status LED Display Description • ERRORS E1 Room temperature sensor shorted, open or not installed E2 Defrost temperature sensor shorted, open or not installed E3 Suction temperature sensor shorted, open or not installed E4 Suction pressure transducer shorted, open or not installed E5 Out[...]

22 Beacon II Controller Service Mode A single pole, single throw switch (SPST) is supplied in each condensing unit for shutting off the system. Closing the “Service” switch in the condensing unit will cause the system to pumpdown and shut off. “Ser” will be displayed on the Beacon board LED and “SERVIC” is displayed on the Smart Control[...]

23 Beacon II Controller Alarms Beacon II provides a set of dry contacts for use in signaling an alarm. These contacts can be connected to a light, a buzzer , a bell, etc., which will be activated when an alarm condition occurs. When the Beacon II is energized, the alarm contacts are OPENED. When an alarm condition is detected, the contacts are CLOS[...]

24 Beacon II Controller Evaporator Fans Shut Off In some installations, it is desirable to shut off the evaporator fans periodically . This is easily accomplished on Beacon II by wiring a single pole, single throw switch (SPST) between the terminals marked “SER VICE” and “COM” on the Beacon II board. Closing this switch will cause the syste[...]

25 Beacon II Controller System Defaults Figure 15. Control Sensor And Piping T able 5. System Defaults Parameters Code Air Electric Refrigerant rEF R22 R404A Box T emperature bot 35 ° F -10 ° F Superheat SUP 8 ° F8 ° F Slave Evaporator SLA No No No. of Defrosts Per Day dFn 24 Defrost Fail-Safe T ime dFF 40 min. 30 min. Defrost End T emperature [...]

26 Beacon II Controller Checking Operation Of Expansion V alve (EEV) To check if the expansion valve is closing properly; Install a pressure gauge-set to suction line at the condensing unit. With the system running, close the valve on the liquid line, at the condensing unit. The system should pump-down and shut off on the Low Pressure switch (LPS).[...]

27 Refrigeration Charging Refrigeration Charging 1. Install a liquid line drier in the refrigerant supply line between the service gauge and the liquid service port of the receiver . This extra drier will insure that all refrigerant supplied to the system is clean and dry . 2. When initially charging a system that is in a vacuum, liquid refrigerant[...]

28 Operational Checkout After the system has been charged and has operated for at least 2 hours at normal operating conditions without any indication of malfunction, it should be allowed to operate overnight on automatic controls. Then a thorough re-check of the entire system operation should be made as follows: (a) Check compressor discharge and s[...]

29 Preventive Maintenance Routine preventive maintenance of any mechanical equipment is critical to its long term reliability . During even normal operation all equipment will expeerience some deterioration during its lifetime caused by wear and evironmental influences. For that reason, regularly scheduled maintenance of your refrigeration equipmen[...]

30 Preventive Maintenance CONDENSING UNIT QUARTERLY SEMI-ANNUALLY DATE DATE DATE DATE Visually inspect unit  1 Look for signs of oil stains on interconnection piping and condenser coil. Pay close attention to areas around solder joints, building penetrations and pipe clamps. Check any suspect areas with an electronic leak detector  2 Ch[...]

31 Preventive Maintenance UNIT COOLERS QUARTERLY SEMI-ANNUALLY DATE DATE DATE DATE Visually inspect unit  1 Look for signs of corrosion on fins, cabinet, copper tubing and solder joints  2 Look for excessive or unusual vibration for fan blades or sheet metal panels when in operation. Identify fan cell(s) causing vibration and check moto[...]

32 Diagnostics Beacon II T roubleshooting Guide PROBLEM Step ACTION ITEM IF OK IF NOT OK 1. Check Primary Power Supply Disconnect 1. Check fuses and circuit breakers 2. Check V oltage to Evaporator T ransformer Go to 2. Check field wiring for breaks LED is not lit. 3. Check Transformer Secondary Output V olts next step 3. Replace if necessary 4. Ch[...]

33 Diagnostics PROBLEM Step ACTION ITEM IF OK IF NOT OK 1. Check wiring connection to the board • Correct field wiring to the board 2. Low Pressure Safety (LPS) T ripped: • Check for correct refrigerant type • Change setpoint to match refrigerant • Check refrigerant charge • Add more refrigerant to proper charge • Check LPS setting • [...]

34 Diagnostics Beacon II T roubleshooting Guide (continued) PROBLEM Step ACTION ITEM IF OK IF NOT OK E9 Multi-out to Multi-in 1. Check for 24 volts power to the board 1. If no voltage, see “LED is not lit” above Communication Wiring for low voltage, see “88888 LED display” (only shows after initial 2. Check for crossed communication wiring [...]

35 Diagnostics PROBLEM Step ACTION ITEM IF OK IF NOT OK 1. Check system operation: Is it running? 1. Check power to condensing unit Check position of Service Mode switches Check compressor overloads and contactor 2. Check system charge 2. Add or remove refrigerant to proper charge 3. Check for proper operating superheat 3. Check EEV operation Check[...]

36 Parts T able 6. Beacon II Parts List P ART HRP P ART DESCRIPTION NUMBER Beacon II Control Board 28910101 *T emperature Sensor Kit – Blue Leads 89904902 T ransformer: 240/24 volt – 40 V A 22529602 Pilot Relay 2251 1401 Contactor for Compressor 40 amp with 24 volt Coil 2252440 T erminal Block – Condensing Unit 2251266 Low Pressure Switch T i[...]

37 W iring Diagrams Diagram 1.[...]

38 W iring Diagrams Diagram 2.[...]

39 W iring Diagrams Diagram 3.[...]

40 W iring Diagrams Diagram 4.[...]

41 W iring Diagram Diagram 5.[...]

42 W iring Diagram Fan Cycling Interlocking Connections Relay 4 (R4) is for condenser fan operation for the Ice Machine circuit located with the left fan. Relay is 208-240V . Hoshizaki ice machines require a 1 15 volt relay which must be field supplied replacing the factory relay . Diagram 1. Ice Machine Fan Cycle Wiring R4 Ice Machine ** Left Fan [...]

43 Start-up Checklist Date of Start-up Location CONDENSING UNIT MODEL # SERIAL # COOLER UNIT MODEL # SERIAL # COOLER UNIT MODEL # SERIAL # COOLER UNIT MODEL # SERIAL # FREEZER UNIT MODEL # SERIAL # FREEZER UNIT MODEL # SERIAL # ELECTRICAL • Check Primary Supply voltage. If 208 V , change transformer wiring in the Cooler and Freezer to the 208 V t[...]

44 Start-up Checklist RECORD OUTDOOR TEMPERA TURE ______ ° F. SYSTEM VOL T AGE ______V olts ______PH ______PH Cooler Compressor Amps ______L1 ______L2 ______L3 Freezer Compressor Amps ______L1 ______L2 ______L3 Ice Storage Compressor Amps ______L1 ______L2 ______L3 Cooler Discharge Pressure ______PSIG Freezer Discharge Pressure ______PSIG Ice Stor[...]

45 Notes[...]

46 Notes[...]

47 Notes[...]

2175 W . Park Place Blvd. • Stone Mountain, Georgia 30087 (770) 465-5600 • Fax: (770) 465-5990 www .heatcraftrpd.com • e-mail: hrpd.feedback@heatcraft.com Since product improvement is a continuing effort at Heatcraft Refrigeration Products, we reserve the right to make changes in specifications without notice. W ARNING Refrigerant can be harm[...]