Heatcraft Refrigeration Products H-IM-FL1A Installating And Operation Manual

Fl ac scroll refrigeration systems

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FL AC Scroll

Refrigeration Systems

H-IM-FL1A

Installation and

Operation Manual

December, 2004

General Safety Information ...................................................... 2

Inspection ................................................................................. 2

Warranty Statement .................................................................. 2

Air Cooled Condensing Unit and Condenser Space and Location

Condensing Unit Rigging and Mounting ................................... 4

Ambient Fan Cycle Control ...................................................... 4

Condensing Unit Accessories .................................................. 5

Suction Filters, Driers, Sight Glasses ....................................... 5

Refrigerant Oils ........................................................................ 6

Phase Loss Monitor .................................................................. 7

Recommended Refrigerant Piping Practices ........................... 7

Refrigeration Pipe Supports .................................................... 7

Suction Lines ............................................................................ 8

Suction Line Risers .................................................................. 8

Liquid Lines .............................................................................. 8

Evacuation and Leak Detection ...............................................11

Refrigerant Charging Instructions ........................................... 12

Field Wiring............................................................................. 12

Check Out and Start Up ......................................................... 12

Operational Check Out ........................................................... 13

System Balancing - Compressor Superheat .......................... 13

System Troubleshooting Guide .............................................. 14

Preventive Maintenance Guidelines ....................................... 15

Replacement Parts ................................................................. 15

Wiring Diagrams ................................................................ 16-18

Submittal .......................................................................... 19, 20

Service Record ....................................................................... 21

Part No. 25006901

Requirements .................................................................. 3

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Summary of Contents for Heatcraft Refrigeration Products H-IM-FL1A

Page 1: Table Of Contents
FL AC Scroll Refrigeration Systems H-IM-FL1A Installation and Operation Manual December, 2004 Table of Contents General Safety Information ... 2 Inspection ... 2 Warranty Statement ... 2 Air Cooled Condensing Unit and Condenser Space and Location Requirements ... 3 Condensing Unit Rigging and Mounting ... 4 Ambient Fan Cycle Control ...
Page 2: General Safety Information
© 2004, Heatcraft Refrigeration Products LLC Make sure that all ﬁeld wiring conforms to the requirements of the equipment and all applicable national and local codes.
Page 3 Space and Location Requirements for Air Cooled Condensing Units and Remote Condensers 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.
Page 4: Condensing Unit Rigging And Mounting
Condensing Unit Rigging and Mounting Rigging holes are provided on all units. Caution should be exercised when moving these units. To prevent damage to the unit housing during rigging, cables or chains used must be held apart by spacer bars. The mounting platform or base should be level and located so as to permit free access of supply air.
Page 5: Condensing Unit Accessories
Condensing Unit Accessories Suction Filters, Driers, Sight Glasses There are two types of suction and liquid ﬁlter/driers used on Heatcraft Refrigeration Products units. Replaceable core and/or sealed units are used, dependent upon the option package ordered. Suction ﬁlters, regardless of type, are always installed upstream of the compressor suction service valve, and any accumulators or other options that may be installed.
Page 6: Refrigerant Oils
Refrigeration Oils* With the changes that have taken place in our industry due to the CFC issue, we have reevaluated our lubricants to ensure compatibility with the new HFC refrigerants and HCFC interim blends offered by several chemical producers. As a secondary criteria, it is also desirable that any new lubricant be compatible with the traditional refrigerants such as CFC-12, HCFC-22 or R502.
Page 7: Phase Loss Monitor
Observe motors for correct rotation. Recommended Refrigerant Piping Practices The system as supplied by Heatcraft Refrigeration Products, was thoroughly cleaned and dehydrated at the factory. Foreign matter may enter the system by way of the evaporator to condensing unit piping.
Page 8: Suction Lines
Suction Lines NOTE: If the suction line must rise to a 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 inch per 10 feet for good oil return.
Page 9 Table 4. Pressure Loss of Liquid Refrigerants in Liquid Line Risers (Expressed in Pressure Drop, PSIG, and Subcooling Loss, ˚F). 10ʼ 15ʼ Refrigerant PSIG ˚F PSIG R134a R507, R404A Based on 110˚F liquid temperature at bottom of riser. Table 5. Equivalent Feet of Pipe Due to Valve and Fitting Friction Copper Tuber, O.D., Type “L”...
Page 10 Table 6. Weight of Refrigerants in Copper Lines During Operation (Pounds per 100 lineal feet of type “L” tubing). Line Size O.D. in Inches Refrigerant 134a R507, 404A 134a R507, 404A 134a R507, 404A 134a R507, 404A 134a 1 1/8 R507, 404A 134a 1 3/8...
Page 11: Evacuation And Leak Detection
Evacuation and Leak Detection Due to the smaller molecule size of HFCʼs, they will tend to leak more readily than CFCʼs. Consequently, it is of the utmost importance that proper system evacuation and leak detection procedures be employed. Copeland recommends a minimum evacuation to 500 microns. In addition, a vacuum decay test is strongly recommended to assure there is not a large pressure differential between the system and vacuum pump.
Page 12: Refrigerant Charging Instructions
Refrigerant Charging Instructions 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.
Page 13: Operational Check Out
For maximum system capacity, suction superheat should be kept as low as is practical. Copeland mandates a minimum superheat of 20˚F at the compressor. Heatcraft Refrigeration Products recommends that the superheat at the compressor be between 30˚F and 45˚F.
Page 14: System Troubleshooting Guide
Table 7. System Troubleshooting Chart PROBLEM Compressor will not run Compressor noisy or vibrating High discharge pressure Low discharge pressure High suction pressure Low suction pressure Little or no oil pressure Compressor loses oil Compressor thermal protector switch open. POSSIBLE CAUSES Main switch open.
Page 15: Preventive Maintenance Guidelines
You may obtain information regarding local authorized wholesalers by calling the Heatcraft Refrigeration Products Replacement Parts Center at 1-800-686-7278 between the hours of 7:30 AM to 4:30 PM Central Time.
Page 16: Wiring Diagrams
Wiring Diagram for BACU51D2CHPQ USE COPPER CONDUCTORS ONLY. MINIMUM WIRE #18 AWG UNLESS OTHERWISE SPECIFIED. DISCONNECT BY OTHERS. 208V/3ÿ/60HZ POWER SUPPLY 4 AWG 4 AWG 70 A 90 A 80 A # 8 AWG 6 AWG # 6 AWG 75 A 50 A 60 A COMPRESSOR 1...
Page 17 Wiring Diagram for BACU59D2CHPQ MINIMUM WIRE #18 AWG UNLESS OTHERWISE SPECIFIED. USE COPPER CONDUCTORS ONLY. DISCONNECT BY OTHERS. 208V/3ÿ/60HZ POWER SUPPLY 4 AWG 4 AWG 70 A 90 A 90 A # 8 AWG 6 AWG # 6 AWG 75 A 50 A 75 A COMPRESSOR 1...
Page 18: Wiring Diagrams
Control Circuit Wiring Diagram for BACU51 and BACU59...
Page 19: Submittal
Submittal...
Page 20: Submittal
Submittal...
Page 21: Condensing Unit
A permanent data sheet should be prepared on each refrigeration system at an installation, with a copy for the owner and the original for the installing contractorʼ s ﬁles. System Reference Data The following information should be ﬁlled out and signed by Refrigeration Installation Contractor at time of start-up. Date System Installed: Installer and Address: Condensing Unit...
Page 22 Notes...
Page 23 Notes...
Page 24 Since product improvement is a continuing effort, we reserve the right to make changes in specifications without notice. EATCRAFT EFRIGERATION RODUCTS 2175 W • S LACE OULEVARD TONE 770-465-5600 • F : 770-465-5990 Visit us online at www.heatcraftrpd.com. , GA 30087 USA OUNTAIN HEATCRAFTRPD...

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