Stulz SCS-018 Installation, Operation And Maintenance Manual Download Page 1

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Mini-Space EC

DX and CW
4

–

12 kW Systems

Vertical Floor Mounted, 60 Hz Data

Installation, Operation and Maintenance Manual

Summary of Contents for SCS-018

Page 1: ...Mini Space EC DX and CW 4 12 kW Systems Vertical Floor Mounted 60 Hz Data Installation Operation and Maintenance Manual...

Page 2: ...d reproduced or translated into another language for use by anyone other than the owner of the equipment for which this manual is written without the prior written consent of STULZ Air Technology Syst...

Page 3: ...er Glycol Chilled Water and Hot Water Reheat Piping 12 2 7 3 Pump Package 12 2 7 4 Condensate Drain Line 12 2 7 4 1 Gravity Drain 12 2 7 4 2 Condensate Pump 12 2 7 5 Humidi er 12 2 8 Utility Connectio...

Page 4: ...lacement 29 4 3 4 5 Filter Replacement 30 5 0 Product Support 30 5 1 Technical Support 30 5 2 Obtaining Warranty Parts 30 5 3 Obtaining Spare Replacement Parts 31 Figures Figure 1 Typical Up ow Intern...

Page 5: ...ear return and front discharge The basic cabinet height remains the same 72 8 regardless of the con guration An optional plenum box may be selected for up owand rear return units only which adds an ex...

Page 6: ...ice or repairs WARNING Refrigerant R410A is used with this equipment Death or serious injury may result if personnel fail to observe proper safety precautions Great care must be exercised to prevent c...

Page 7: ...the front access door which is locked in three places To open the front door turn the door locks with the triangular key wrench provided The front door is also safetyinterlocked with the main power d...

Page 8: ...t output status monitoring Full integrated control of cooling Multi system control and remote communica tion with building management systems TheE controllerismountedinsidetheunitelectricbox User inte...

Page 9: ...specified otherwise by the customer The duct connection plate or plenum box if applicable are placed on top of the air conditioner inside the unit s carton Removeandstoretheseitemsinasafeplace unless...

Page 10: ...i Space EC unit is shipped on a skid to facilitate moving priorto installation The unit should always be stored indoors in a dry location prior to installation CAUTION When moving the unit it must be...

Page 11: ...g surface Locate remote condenser condensing units where the blower s are not likely to draw dirt and debris into the coil ns There should be at least 24 inches of clearance around the condenser to en...

Page 12: ...y drain pan located beneath the unit STULZ provides two types ofwater detectors installed as described below Spot type water detector Remove the protective cover and connect two control wires totheter...

Page 13: ...ce between the evaporator and the condenser condensingunit Eachvalve ttingandbendinthe refrigerant line must be considered in this calculation Refer to the following chart provided for determining the...

Page 14: ...OTTOM DISCHARGE TOP FREE RETURN BOTTOM DISCHARGE RETURN AIR INLET SUPPLY AIR OUTLET TOP DUCTED RETURN BOTTOM DISCHARGE SUPPLY AIR OUTLET RETURN AIR INLET DUCT RETURN AIR INLET SUPPLY AIR OUTLET RETURN...

Page 15: ...atterns SUPPLY AIR OUTLET RETURN AIR INLET SUPPLY AIR OUTLET DUCT RETURN AIR INLET REAR DUCTED RETURN SUPPLY AIR OUTLET DUCT RETURN AIR INLET FRONT FREE RETURN DUCT RETURN AIR INLET SUPPLY AIR OUTLET...

Page 16: ...e discharge line to prevent back ow that may damage the pump on shut down Install a ball valve in the suction and discharge lines for maintenance purposes 2 7 4 Condensate Drain Line 2 7 4 1 Gravity D...

Page 17: ...nimum circuit ampacity MCA forwire sizing andthe maximumfuse or HACR Heating Air Conditioning Refrigeration breaker size MAX FUSE CKT BKR for circuit protection The unit s nameplateislocatedinsidethec...

Page 18: ...ires are connected in this manner A ground lug is provided in each unit nearthe non fused main powerdisconnect switch Prior to unit operation an adequate unit to earth ground must be connected to the...

Page 19: ...aller must also wire control conductors from the terminal board in the A C unit to the control terminal board in the remote condenser electric box Refer to the electrical drawing forthe correct number...

Page 20: ...IN POWER SUPPLY 208 460V 1PH 3PH 60Hz MODELS CC 041 121 W G INTERCONNECTING FIELD WIRING TO BE INSTALLED IN ACCORDANCE WITH NFPA 70 N E C L3 L1 L2 Figure 10 Interconnecting Field Wiring Remote Condens...

Page 21: ...luding newly installedorexistingpiping Thepumpmustbeingood operating condition Ensure it contains clean fresh oil Manufacturers recommend you change the oil in the pump regularly to maintain its abili...

Page 22: ...cess of evacuating the system this time with a goal of achieving a 250 micron vacuum or less Close the vacuum pump isolation valve Whenyou can hold thevacuum at 500 microns or lower for at least 2 hou...

Page 23: ...CAUTION Remove the blockage from the air intake of the condenser 10 Fill out the applicable sections of the Warranty Regis tration and Start Up Checklist 2 9 4 4 30 F Ambient Applications NOTE For un...

Page 24: ...to ow from the condenser to the receiver When using this method of head pressure regulation there mustbeenoughrefrigerantinthesystemtoensureadequate chargeatthelowestexpectedambienttemperatureinwhich...

Page 25: ...suction low side of the compressor as it operates in full hot gas bypass operation The valve is factory set and noadjustmentshouldbenecessary Ifadjustmentisrequired blockonehalfofthecoilandremoveadju...

Page 26: ...rs might be requiredto see adesired level orrise ofhumid ityinthe conditioned space Once room conditions have beenprogrammedorset arepeatvisittotheconditioned site may be required to ensure the humidi...

Page 27: ...R410A refrigerant is exposed to flame Always ensure adequate ventilation during refrigeration repairs WARNING Always recover all refrigerant prior to any system repairs Failure to do so may result in...

Page 28: ...r a long period do not attempt to start the condensing unit until eight hours after applyingpower Thisallowsenoughtimeforallliquid refrigerant to be driven out of the compressor This is especially imp...

Page 29: ...k for and clear any obstructions across or in the supply discharge air stream 3 Check correct rotation of evaporator blower b Temperature setting too low Increase temperature setpoint 68 F min c Disch...

Page 30: ...rior to adding to system Remove solution and premix Re ll system Condenser Pressure Too Low a Loss of refrigerant indicated by bubbles in sight glass Locate and repair leak Recharge system b Condenser...

Page 31: ...ated Check for supply registers that may be too close to thermostat Relocate if necessary Heater Inoperative a Fuses blown Check for short circuit replace fuse b Temperature set too low Increase tempe...

Page 32: ...een opened Ifa burnoutoccurred theoilwillbeblackandacidic Amechanical failurewill have no burned odorandthe motorwill attemptto run An abnormal or excessive noise may be present Analyzing the oil is t...

Page 33: ...system through the access valve on the suction line lter drier 8 Turn on power at the main power disconnect switch and start the system at the controller 9 Thepermanentlyinstalledsuctionline lter drie...

Page 34: ...Technical Support Department is dedicated to the prompt reply and resolution of issues experienced with supplied equipment Please contact 888 529 1266 Monday through Friday from 8 00 a m to 5 00 p m...

Page 35: ...ntplaceontheexternalpackaging of the returned part 5 3 Obtaining Spare Replacement Parts Maintaining a recommended spare parts inventory is an industrybestpracticeforcriticalfacilities On sitespareski...

Page 36: ...ean Condensate Pump Annually Refrigerant Systems Chilled Water Systems Inspect Glycol System for Leaks and Corrosion Inspect Chilled Water System for Leaks and Corrosion Conduct a Complete Check of Al...

Page 37: ...uality in w g Inches of Water Gauge kVA Kilo Volt Amps kW Kilowatt LEWT Low Entering Water Temperature LRA Locked Rotor Amps MAX CKT BKR Maximum Circuit Breaker MAX FUSE Maximum Fuse MCA Minimum Circu...

Page 38: ...34 MINI SPACE EC INSTALLATION OPERATION AND MAINTENANCE MANUAL Notes...

Page 39: ...35 MINI SPACE EC INSTALLATION OPERATION AND MAINTENANCE MANUAL Notes...

Page 40: ...1034 28918 Legan s Madrid STULZ France S A R L 107 Chemin de Ronde 78290 Croissy sur Seine info stulz fr STULZ S p A Via Torricelli 3 37067 Valeggio sul Mincio VR STULZ CHSPL India Pvt Ltd 006 Jagrut...

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