Heatcraft Refrigeration Products Condensing Units H-IM-CU Installating And Operation Manual Download Page 2

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General Safety Information

Installation and maintenance to be performed only by qualified  

 

 

personnel who are familiar with this type of equipment.
Some units are pressurized with dry air or inert gas.  

 

All units must be evacuated before charging the system with refrigerant.

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2.

WARNING:

 

Refrigerant can be harmful if it is inhaled. Refrigerant must be used and recovered responsibly. 

Failure to follow this warning may result in personal injury or death.

Inspection

Responsibility should be assigned to a dependable individual at the job site 

to receive material.  Each shipment should be carefully checked against the 

bill of lading. The shipping receipt should not be signed until all items listed 

on the bill of lading have been accounted. Check carefully for concealed 

damage.  Any shortage or damages should be reported to the delivering 

carrier. Damaged material becomes the delivering carrier’s responsibility, 

and should not be  returned to the manufacturer unless prior approval is 

given to do so. When uncrating, care should be taken to prevent damage. 

Heavy equipment should be left on its shipping base until it has been 

moved to the final location. Check the serial tag information with invoice. 

Report any discrepancies to your Heatcraft Refrigeration Products Sales 

Representative.

Warranty Statement

Seller warrants to its direct purchasers that products, including Service Parts, 

manufactured by SELLER shall be of a merchantable quality, free of defects in 

material or workmanship, under normal use and service for a period of one 

(1) year from date of original installation, or eighteen (18) months from 

date of shipmen

t by SELLER, whichever first occurs. Any product covered by 

this order found to Seller’s satisfaction to be defective upon examination at 

Seller’s factory will at SELLER’s option, be repaired or replaced and returned 

to Buyer via lowest common carrier, or SELLER may at its option grant Buyer 

a credit for the purchase price of the defective article. Upon return of a 

defective product to SELLER’s plant, freight prepaid, by Buyer, correction of 

such defect by repair or replacement, and return freight via lowest common 

carrier, shall constitute full performance by SELLER of its obligations 

hereunder.

SELLER shall have no liability for expenses incurred for repairs made by 

Buyer except by prior, written authorization.  Every claim on account of 

breach of warranty shall be made to SELLER in writing within the warranty 

period specified above – otherwise such claim shall be deemed waived. 

Seller shall have no warranty obligation whatsoever if its products have 

been subjected to alteration, misuse, negligence, free chemicals in system, 

corrosive atmosphere, accident, or if operation is contrary to SELLER’s or 

manufacturer’s recommendations, or if the serial number has been altered, 

defaced, or removed.

MOTOR COMPRESSORS:

Motor compressors furnished by SELLER are subject to the standard 

warranty terms set forth above, except that motor compressor replacements 

or exchanges shall be made through the nearest authorized wholesaler 

of the motor compressor manufacturer (not at SELLER’s factory) and no 

freight shall be allowed for transportation of the motor compressor to and 

from the wholesaler. The replacement motor compressor shall be identical 

to the model of the motor compressor being replaced. Additional charges 

which may be incurred throughout the substitution of other than identical 

replacements are not covered by this warranty. An optional, non assignable, 

four (4) year extended compressor warranty may be purchased within the 

boundaries of the United Sates of America, its territories and possessions, 

and Canada. With this extended compressor warranty, replacements are 

administered by an authorized compressor distributor only.  Replacements 

within the first year of the warranty area available through the distributor; 

the second through fifth years, the purchaser must submit a proof-of-

purchase of a compressor and supply it to Heatcraft Refrigeration Products 

Warranty Claims for reimbursement.

Seller makes no express warranties except as noted above.  All implied 

warranties are limited to the duration of the Express Warranty. Liability for 

incidental and consequential damages is excluded.  

The forgoing is in lieu of all other warranties, express or implied, 

notwithstanding the provisions of the uniform commercial code, the 

Magnuson-Moss Warranty - Federal Trade Commission Improvement Act, or 

any other statutory or common law, federal or state.
SELLER makes no warranty, express or implied, of fitness for any particular 

purpose, or of any nature whatsoever, with respect to products manufactures 

or sold by seller hereunder, except as specifically set forth above and on 

the face hereof. It is expressly understood and agreed that SELLER shall not 

be liable to buyer, or any customer of buyer, for direct or indirect, special, 

incidental, consequential or penal damages, or for any expenses incurred by 

reason of the use or misuse by buyer or third parties of said products. To the 

extent said products may be considered "consumer products," As defined 

in Sec. 101 of the Magnuson-Moss Warranty - Federal Trade Commission 

Improvement Act, SELLER makes no warranty of any kind, express or implied, 

to "consumers," except as specifically set forth above and on the face hereof.

The following conditions should be adhered to when installing this unit to 

maintain the manufacturers warranty:

System piping must be in accordance with good refrigeration    

 

practices.  

Inert gas must be charged into the piping during brazing.

  

The power supply to the unit must meet the following conditions: 

 

 

A.  Three phase voltages must be +/- 10%    

 

 

 

of nameplate ratings.  Single phase must be  

 

 

 

10% or -5% of nameplate ratings. 

 

 

B.  Phase imbalance cannot exceed 2%.

All control and safety switch circuits must be properly connected  

 

according to the wiring diagram.  
The factory installed wiring and piping must not be changed  

 

 

without written factory approval.
All equipment is installed in accordance with  

 

Heatcraft Refrigeration Products specified minimum clearances.

a)

b)

c)

d)

e)

f)

© 2008 Heatcraft Refrigeration Products LLC

Make sure that all field wiring conforms to the requirements 

  

of the equipment and all applicable national and local codes.
Avoid contact with sharp edges and coil surfaces. 

 

They are a potential injury hazard.
Make sure all power sources are disconnected before any    

 

 

service work is done on units.

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Summary of Contents for Condensing Units H-IM-CU

Page 1: ...or 8 Recommended Refrigerant Piping Practices 8 Refrigeration Pipe Supports 8 Suction Lines 8 Liquid Lines 9 Hot Gas Defrost Systems 9 Unit Cooler Piping 10 Line Sizing Tables 10 13 Evacuation and Lea...

Page 2: ...s factory and no freight shall be allowed for transportation of the motor compressor to and from the wholesaler The replacement motor compressor shall be identical to the model of the motor compresso...

Page 3: ...top of the pit This is a minimum requirement Decorative Fences Fences must have 50 free area with 1 foot undercut a W minimum clearance and must not exceed the top of unit If these requirements are n...

Page 4: ...where incoming water is 75 F and condensing temperature is 105 F Tower refers to a higher temperature relationship which is normally 85 F incoming water and 105 F condensing temperature Water circuit...

Page 5: ...units a structural analysis by a qualified engineer may be required before mounting Roof mounted units should be installed level on steel channels or an I beam frame capable of supporting the weight o...

Page 6: ...50 30 8 fan units 25 65 55 40 20 70 65 50 15 75 70 60 NOTE Cycle pairs of fans on double wide units Operation and Adjustment Condensing units with dual valves require sufficient charge to partially f...

Page 7: ...which oils lubricants are approved for use in Copeland compressors Mineral Oils The BR and Scroll compressors use Sontex 200 a white oil This oil is not suitable for low temperature applications nor i...

Page 8: ...at the base of each suction riser to enhance oil return to the compressor For desired method of superheat measurement a pressure tap should be installed in each evaporator suction line in the proximi...

Page 9: ...freezing The hot gas exits the loop at the pan loop outlet header and enters the evaporator through the check valve assembly As the hot gas defrosts the coil heat is removed from the hot gas and even...

Page 10: ...rator Refer to Table 5 Each 1 1 8 90 elbow adds 3 equivalent feet of pipe Each 90 turn through a 1 1 8 tee adds 6 equivalent feet Actual line run evap 1 105 feet 5 1 1 8 elbows 3 15 feet 1 90 turn thr...

Page 11: ...0 3 8 3 8 3 8 3 8 6 000 50 3 8 3 8 1 2 3 8 100 1 2 3 8 1 2 3 8 9 000 50 1 2 3 8 1 2 3 8 100 1 2 3 8 1 2 3 8 12 000 50 1 2 3 8 1 2 3 8 100 5 8 3 8 5 8 1 2 18 000 50 5 8 3 8 5 8 1 2 100 5 8 3 8 7 8 1 2...

Page 12: ...1 5 8 1 3 8 1 5 8 1 5 8 2 1 8 1 2 1 2 5 8 5 8 72 000 1 1 8 1 1 8 1 3 8 1 3 8 1 1 8 1 3 8 1 3 8 1 5 8 1 1 8 1 3 8 1 5 8 1 5 8 1 3 8 1 3 8 1 5 8 2 1 8 1 3 8 1 3 8 1 5 8 2 1 8 1 3 8 1 5 8 2 1 8 2 1 8 1 2...

Page 13: ...5 8 1 5 8 1 5 8 1 3 8 1 5 8 1 5 8 1 5 8 1 3 8 1 5 8 1 5 8 1 5 8 1 2 1 2 5 8 5 8 72 000 1 1 8 1 3 8 1 5 8 1 5 8 1 1 8 1 3 8 1 5 8 1 5 8 1 3 8 1 5 8 1 5 8 1 5 8 1 3 8 1 5 8 1 5 8 1 5 8 1 3 8 1 5 8 1 5 8...

Page 14: ...lve The vacuum pump should be operated until a pressure of 1 500 microns absolute pressure is reached at which time the vacuum should be broken with the refrigerant to be used in the system through a...

Page 15: ...re has stabilized Observe system pressures during charging and initial operation Do not add oil while the system is short of refrigerant unless oil level is dangerously low Continue charging until sys...

Page 16: ...rve oil level in compressor crankcase sight glass Add oil as necessary to bring level to bottom 1 4 of the sight glass Thermostatic expansion valves must be checked for proper superheat settings Feele...

Page 17: ...ly The defrost heaters are off The room thermostat closes when the temperature rises above the desired setting The liquid line solenoid is energized and opens which allows liquid refrigerant to flow t...

Page 18: ...ol operation 2 Open valve 3 Check for leaks Repair and add charge 4 See corrective steps for low suction pressure 5 Check valve setting High suction pressure 1 Excessive load 2 Expansion valve overfee...

Page 19: ...Check unit cooler superheat and compare reading for your specific application Visually inspect coil for even distribution Check moisture indicator sightglass for flash gas If found check entire syste...

Page 20: ...20 Diagram 3 Typical Wiring Diagram for Single Evaporator with and without Defrost Timer Diagram 4 Typical Wiring Diagram for Single Evaporator with Defrost Timer Only...

Page 21: ...21 Diagram 5 Typical Wiring Diagram for Multiple Evaporators with Defrost Timer Only Diagram 6 Typical Wiring Diagram for Single Evaporator Single Phase Defrost and Evaporator Fan Contactors...

Page 22: ...ram 7 Typical Wiring Diagram for Single Evaporator Defrost and Evaporator Fan Contactors Diagram 8 Typical Wiring Diagram for Multiple Evaporators with Evaporator Fan Contactors without Heater Limit D...

Page 23: ...Wiring Diagram for Multiple Evaporators Defrost and Evaporator Fan Contactors with Unit Cooler Holdout Relay Diagram 9 Typical Wiring Diagram for Multiple Evaporators with Heater Limit Defrost and Eva...

Page 24: ...the same high performance standards with which all HRP brands are built backed by a dedicated team to serve every customer need delivering at the best lead times in the industry Replacement parts sho...

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