Instruction/ maintenance manual of the product 50ZHA024-060 Carrier
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50ZHA024-060 Packaged Heat Pump Units Installation, Start-Up and Service Instructions NOTE: Read the entire instruction manual before starting the installation. TABLE OF CONTENTS SAFETY CONSIDERATIONS ..................................................
Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguisher available for all brazing operations. FIRE, EXPLOSION, ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury, death and/or property damage.
Fig. 2—Unit Base Dimensions, 50ZHA024-060 A05201 3.
are field-installed and must be removed from the indoor blower compartment prior to start-up, even if they are not used for installation. When designing and installing ductwork, consider the following: UNIT DAMAGE HAZARD Failure to follw this caution may result in damage to unit components.
Step 7—Install Electrical Connections ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. The unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur.
Table 3—Minimum Airflow for Safe Electric Heater Operation (CFM) SIZE 024 030 036 042 048 060 Cfm 600 750 900 1050 1200 1500 UNIT DAMAGE HAZARD Failure to follow this caution may result in unit component damage. Operation of unit on improper line voltage consti- tutes abuse and may cause unit damage that could affect warranty.
b. Inspect for oil at all refrigerant tubing connections and on unit base. Detecting oil generally indicates a refrigerant leak. Leak-test all refrigerant tubing connections using electronic leak detector, or liquid-soap solution. If a refrig- erant leak is detected, see following Check for Refrigerant Leaks section.
START-UP Use the Start-Up Checklist supplied at the end of this book and proceed as follows: Step 1—Check for Refrigerant Leaks LOCATE AND REPAIR REFRIGERANT LEAKS AND CHARGE THE UNIT AS FOLLOWS: 1. Using both high- and low-pressure ports, locate leaks and reclaim remaining refrigerant to relieve system pressure.
LOW CHARGE COOLING 024-042 units: 1. Measure suction line pressure by attaching a gauge to the service port. 2. Measure the suction line temperature by attaching a tempera- ture sensing device to it. 3. Insulate the temperature sensing device so that the outdoor ambient doesn’t affect the reading.
Fig. 11A—Typical Unit Electrical Diagram (Sizes 024-042) A05199 10.
A05200 Fig. 11B—Typical Unit Electrical Diagram (Sizes 048-060) 11.
Fig. 11C—Accessory Electric Heater Wiring A05209 Table 6—Electrical Data—50ZHA UNIT SIZE 50ZHA V-PH-HZ VOLTAGE RANGE COMPRESSOR OFM FLA IFM FLA ELECTRIC HEAT SINGLE POINT POWER SUPPLY MIN MAX RLA LRA Nominal KW* FLA MCA FUSE OR CKT BKR MOCP 024 208/230–1–60 187 253 10.
SIZE RATED AIRFLOW HIGH AIRFLOW Low Stage High Stage Low Stage High Stage 048 Tap 1 Tap 3 Tap 2 Tap 4 060 Tap 1 Tap 3 Tap 2 Tap 4 Step 5—Unit Controls All compressors have the following internal-protection controls. HIGH-PRESSURE RELIEF VALVE This valve opens when the pressure differential between the low and high side becomes excessive.
COOLING OPERATION (SIZES 024-042) With a call for cooling (Y/Y2), the indoor fan energizes immedi- ately whereas the contactor energizes afte ra5m inute time delay (in case of initial start-up) starting the compressor and the outdoor fan motor.
be performed on this equipment. This cooling unit should be inspected at least once each year by a qualified service person. To troubleshoot cooling of units, refer to Troubleshooting chart in back of book. NOTE TO EQUIPMENT OWNER: Consult your local dealer about the availability of a maintenance contract.
a. Slip the wheel back in the housing with the hub set screw parented in the correct direction. b. Install the filler panel. c. Reinsert the motor assembly in the wheel hub and align the mounting legs with the housing mounting hold locations. d. Tighten the mounting bolts to fasten the motor assembly with the housing.
After inspecting the electrical controls and wiring, replace all the panels. Start the unit, and observe at least one complete cooling cycle to ensure proper operation. If discrepancies are observed in operating cycle, or if a suspected malfunction has occurred, check each electrical component with the proper electrical instrumenta- tion.
Fig. 14—Typical Heat Pump Operation, Heating Mode C95045 STRAINER ACCUMULA TOR COMPRESSOR STRAINER LCS OUTDOOR COIL INDOOR COIL A B D C Check V alves A Open B Closed C Open D Closed LEGEND LCS Loss of Charge Switch Acutrol Metering Device Check V alve (Arrow indicates direction of flow) HEA TING CYCLE 1.
Table 12—Troubleshooting—Cooling and Heating SYMPTOM CAUSE REMEDY Compressor and outdoor fan will not start. Power Failure Call power company Loss of Charge Switch open Evaluate unit for possible .
START-UP CHECKLIST (REMOVE AND STORE IN JOB FILE) I. PRELIMINARY INFORMATION Model No ............................................................................................................................................................. Serial No .
An important point after buying a device Carrier 50ZHA024-060 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Carrier 50ZHA024-060 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Carrier 50ZHA024-060 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Carrier 50ZHA024-060 you will learn all the available features of the product, as well as information on its operation. The information that you get Carrier 50ZHA024-060 will certainly help you make a decision on the purchase.
If you already are a holder of Carrier 50ZHA024-060, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Carrier 50ZHA024-060.
However, one of the most important roles played by the user manual is to help in solving problems with Carrier 50ZHA024-060. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Carrier 50ZHA024-060 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
