Summary of Contents for United cool air C13-Series
- Page 1 C13-Series Installation, Operation and Maintenance Manual Effective August 2018 Horizontal Air-Cooled, Water-Cooled, Chilled Water and Heat Pump...
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Page 3: Table Of Contents
Checking Hot Gas Bypass Valve� � � � � � � � � � � � � � � � � � 21 C13-Series Air-Cooled Package � � � � � � � � � � � � � � � � � � � 6 Adjustment Of Hot Gas Bypass Valve �... -
Page 4: Wiring Diagram
Installation, Operation and Maintenance Manual C13-Series Wiring Diagram United CoolAir provides a wiring schematic for each unit produced� To retrieve the diagram for your unit please visit www�unitedcoolair�com, on your computer or mobile device, scroll to the footer section or Home/industry-resources, enter your serial number in the Serial Search field and press return to retrieve your product-wiring diagram. -
Page 5: Important Notice
Installation, Operation and Maintenance Manual C13-Series Important Notice This manual is the property of the owner� Please be sure to leave it with the owner when you leave the job� Use of Symbols This publication includes warnings, cautions and information icons that point out safety related issues or conditions as well as other pertinent information relative to a safe installation, service or maintenance situation�... -
Page 6: C13-Series Air-Cooled Package
Installation, Operation and Maintenance Manual C13-Series C13-Series Air-Cooled Package ½ Evaporator Condensing Section Section Service Clearance All Sizes Left Side 36" Right Side Clearance Hole for ⅜" Hanging Rod TYP 8 PLS Field Installation Power & Control Wiring Elect Box... -
Page 7: C13-Series Water-Cooled Package
Installation, Operation and Maintenance Manual C13-Series C13-Series Water-Cooled Package ½ Evaporator Cond Section Section Service Clearance All Sizes Left Side 36" Right Side Clearance Hole for ⅜" Hanging Rod TYP 8 PLS Field Installation Power & Control Wiring Elect Box... -
Page 8: General Information
Installation, Operation and Maintenance Manual C13-Series General Information Inspection Of Equipment Discharge Air from condenser coil should be deflected away from supply air to condenser, to prevent Upon receipt of the unit, inspect for visible or concealed recirculation� See also “Condensing Section Outdoor damage. -
Page 9: Installation
Installation, Operation and Maintenance Manual C13-Series Installation 1� Air conditioner is shipped assembled and ready for Note: operation� 1� Solid, Class II copper wire 2� Unit contains a full charge of R-410a refrigerant� 2� Based on a voltage drop of 1�2 volts per wire�... -
Page 10: Interconnecting Refrigerant Tubing
Installation, Operation and Maintenance Manual C13-Series 7� Carefully pull the evaporator section away from the INFORMATION condensing section� Two circuit units have 2 groups of couplings� 8� Verify that the self-sealing couplings are completely It’s a good idea to label or mark the various disengaged and not leaking refrigerant�... - Page 11 3 low Male / Female Kit is required� voltage wires� See Wiring Diagram on the inside of the United CoolAir Corporation’s C13-Series horizontal units are evaporator control box access panels (Item (7), Figure provided with unique self-sealing fittings on the refrigerant 3) for disconnecting power wiring�...
- Page 12 Installation, Operation and Maintenance Manual C13-Series (this minimizes floodback/oil slugging during the off INFORMATION cycle)� If the condensing section is more than 40 feet above the evaporator, consult the factory for specific IMPORTANT! On units with more than one refrigeration components�...
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Page 13: Single Package Unit Wiring
Installation, Operation and Maintenance Manual C13-Series Single Package Unit Wiring Low Pressure This switch shuts the unit down in the event of excessive low If the system is to be installed as a single package unit route pressure in the suction line�... -
Page 14: Hook Up
Installation, Operation and Maintenance Manual C13-Series Condensate Drain Connection Hook Up Each refrigerant circuit requires 3 gallons per minute (GPM) Units are equipped with two 3/4" IPS drains; one for the of water per ton of refrigeration� If the unit does not have evaporator condensate;... -
Page 15: Maintenance Procedures
Installation, Operation and Maintenance Manual C13-Series Maintenance Procedures Filters A 5% solution of Phosphoric Acid or Oxalic Acid can be considered for cleaning� However, there are several other Do NOT run unit without filters. commercially available environmentally safe products on the market that will do an excellent job�... -
Page 16: Blowers
Installation, Operation and Maintenance Manual C13-Series 12� Disconnect pump, hoses and tank from heat STD. STEEL PIPE TYPE L NOMINAL exchanger� VOLUME COPPER TUBE PIPE SIZE GAL./FT. VOLUME GAL./FT. 13� Flush entire water system with water� 1/2" .0157 .0121 14� Return heat exchanger and system components to 5/8"... -
Page 17: Blower Motors
Installation, Operation and Maintenance Manual C13-Series INFORMATION CAUTION On units with three-phase fan motors, Reduction of airflow through excessive check for proper blower rotation at start- external air friction losses, lowered blower up� If they run backwards, interchange two speed operation with dirty filters, or obstructed air flow may result in excessive of the incoming power leads�... -
Page 18: Belts
Installation, Operation and Maintenance Manual C13-Series Belts Minimum Service Access Drive belts should be examined periodically for wear and All Service and Maintenance access is through both sides of for correct tension� Belts that are too tight cause bearing the unit. 36" clearance is required. -
Page 19: Sequence Of Operation
Installation, Operation and Maintenance Manual C13-Series Sequence Of Operation Cooling Sequence Of Operation 5� Heat pump cooling sequence is the same as above, except the reversing valve will also be activated when 1� Before starting the unit, make sure electrical power the compressor cycle is started�... -
Page 20: Heat Pump Heating Sequence Of Operation
Installation, Operation and Maintenance Manual C13-Series Heat Pump Heating Sequence Of g� Set room thermostat at desired space temperature� Set the Fan switch to “AUTO” or “ON”� The unit will Operation cycle as required to maintain conditions� Options INFORMATION NOTE: Confirm that a heat pump thermo- Condensate Pump stat has been used for this application�... -
Page 21: Thermostat
Installation, Operation and Maintenance Manual C13-Series Programmable Thermostat Cut tubing at an angle so that bottom Evaporator of reservoir doesn’t close it� Be sure Section tubing does not interfere with float. Enclosure Terminal Board Evaporator Fan 24 Volt Coil New Sixth... -
Page 22: Adjustment Of Hot Gas Bypass Valve
Installation, Operation and Maintenance Manual C13-Series Adjustment Of Hot Gas Bypass Humidifier Valve The optional steam humidifier that comes with the unit functions on the electrode principle. As water fills the plastic The function of the hot gas bypass valve is to prevent the... -
Page 23: Hot Water Coils
Installation, Operation and Maintenance Manual C13-Series Hot Water Coils point of the low pressure control� The result may be a failure of the compressor to start or to short cycle� To eliminate The hot water coil is located in the return air� The coil is this potential problem, a time delay is added to bypass the copper tube/aluminum fin. -
Page 24: Chilled Water Valves Or Hot Water Valves
Installation, Operation and Maintenance Manual C13-Series Chilled Water Valves Or Hot Water determination of how much outdoor air to use for cooling is determined by additional sensors that monitor mixed and Valves discharge air temperatures� Chilled water or hot water valves, if supplied by United These additional sensors are optional and when they CoolAir, are typically 2 way�... -
Page 25: C13-Series Air-Cooled Condenser/ Condensing Section
Installation, Operation and Maintenance Manual C13-Series C13-Series Air-Cooled Condenser/ Condensing Section With Outdoor Modification Kit ½ Refrigerant Quick-Connects Field Installation Power & Control Condensing Wiring Section Elect Box Motor & Blower Access Panel Clearance Hole for ⅜" Hanging REAR RIGHT... -
Page 26: Vertical Stacking Unit
Installation, Operation and Maintenance Manual C13-Series Vertical Stacking Unit A rigid frame system supports the evaporator and provides vibration-free operation� Quick-connect couplings allow the The vertical stacking option is designed for installations unit to be split in the field, if needed, for installation. The where floor space is minimal and a ceiling space is not interconnecting wiring is protected by a cover�... - Page 27 Installation, Operation and Maintenance Manual C13-Series ½ Clearance Hole for Service Clearance ⅜" Hanging Rod All Sizes Typ 8 Pls Left Side 36" Right Side 36" Elect Box Evap Evap Return Supply Motor & Blower Access Panel Elect Box Motor & Blower...
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Page 28: Troubleshooting
Installation, Operation and Maintenance Manual C13-Series Troubleshooting WARNING Turn OFF power to unit before conducting any troubleshooting, unless the tests you are performing require system operation� Keep hands, clothing and tools clear of electrical terminals and rotating components� ITEM CODE... - Page 29 Installation, Operation and Maintenance Manual C13-Series ITEM CODE PROBLEM PROBABLE CAUSE SOLUTION Lack of proper air quantity Check filters: Clean or replace if necessary. Check for obstruction across coil. Check rotation of evapo- rator blower to ensure correct rotation of evaporator blowers.
- Page 30 Installation, Operation and Maintenance Manual C13-Series ITEM CODE PROBLEM PROBABLE CAUSE SOLUTION Air or other non-condensable gas in system Evacuate system and recharge. Install new filter-drier. Clean away debris. Condenser air intake blocked Reclaim excess from high pressure side of the Overcharge of refrigerant system.
- Page 31 Installation, Operation and Maintenance Manual C13-Series ITEM CODE PROBLEM PROBABLE CAUSE SOLUTION Check for control wiring to the free cool Check wiring diagram and rewire. solenoid valve. System short of capacity in Low water flow rate Check source of water flow.
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Page 32: Limited Warranty
Installation, Operation and Maintenance Manual C13-Series Limited Warranty Important Notice! fouling or restriction of the air/water circuit by foreign material or like causes� This Limited Warranty specifically provides that all installation, 10� Damages resulting from operation with inadequate or operation and repairs of product and parts covered under interrupted supply of air or water�... -
Page 33: Limited Warranty For Hermetic Compressors
Installation, Operation and Maintenance Manual C13-Series Limited Warranty for Hermetic Compressors United CoolAir warrants the hermetic compressor in this 11� Damages resulting from use of components or product to be free from defects in factory workmanship and accessories not approved by United CoolAir�... -
Page 34: Limited Warranty Condensing Section
Installation, Operation and Maintenance Manual C13-Series Limited Warranty Condensing Section United CoolAir warrants this product to be free from defects 13� Damages resulting from improper application or sizing in factory workmanship and material under normal use and of unit� service and will, at its option, repair or replace any parts that 14�... -
Page 35: Limited Warranty For Hermetic Compressors
Installation, Operation and Maintenance Manual C13-Series Limited Warranty for Hermetic Compressors United CoolAir warrants the hermetic compressor in this 12� This warranty does not apply to the installation, product to be free from defects in factory workmanship plumbing and wiring not integral to the product�... -
Page 36: Air-Cooled Unit
Installation, Operation and Maintenance Manual C13-Series Air-Cooled Unit Start-Up Procedures (R-410a Systems) Some of the numbered items below are referenced on the 12� Record the voltage at the unit terminals� Start Up Form that needs to be completed� 13� If possible with the thermostat provided, switch the This procedure has been created based on utilizing a evaporator blower to the RUN position�... -
Page 37: Start-Up Procedures (R-410A Systems)
Installation, Operation and Maintenance Manual C13-Series Start-Up Procedures (R-410a Systems) Continued: 21� Using an appropriate pressure / temperature chart for c� The blower motor FLA values should never be R-410a refrigerant, look up and record the saturation exceeded� temperature corresponding to the suction pressure�... -
Page 38: Air-Cooled Unit
Installation, Operation and Maintenance Manual C13-Series Air-Cooled Unit Job Name: _________________________________ Date:____________ Start-Up Procedures Address: ____________________________________________________ Complete the form by listing your City: ___________________________ State: ________ZIP ____________ name, company name, phone and Country: ____________________________________________________ fax number� Sign and date the form and provide a copy as required to all Unit Model No�: ______________________________________________... -
Page 39: Cooling Mode
Installation, Operation and Maintenance Manual C13-Series Evaporator External Static Pressure ��������������������������(ESP): ____________ In� WG ________________ _________________________________________________________________________________________________ Condenser External Static Pressure ��������������������������(ESP): ____________ In� WG ________________ _________________________________________________________________________________________________ Cooling Mode _________________________________________________________________________________________________ System Air Temperatures �������������������������������������Return: °F _________ Supply: °F _________________ _________________________________________________________________________________________________ Condenser Coil �������������������������������������Outdoor Ambient: °F ___________ Condenser Discharge: °F ____________... -
Page 40: Water-Cooled Unit
Installation, Operation and Maintenance Manual C13-Series Water-Cooled Unit Start-Up Procedures (R-410a Systems) 1� Start up must be performed by a qualified HVAC 14� Verify that the evaporator blower is rotating in the Technician� correct direction (three phase units only)� 2� Make certain that all power is disconnected at the main... -
Page 41: Start-Up Procedures (R-410A Systems) Continued
Installation, Operation and Maintenance Manual C13-Series Start-Up Procedures (R-410a Systems) Continued: 22� Record the entering and leaving fluid temperatures. a� Make sure the pressures on each compressor circuit are within the proper limits: b� Make sure the leaving fluid temperature is within the proper limits: i�... -
Page 42: Water-Cooled Unit
Installation, Operation and Maintenance Manual C13-Series Water-Cooled Unit Job Name: _________________________________ Date:____________ Start-Up Procedures Address: ____________________________________________________ Complete the form by listing your City: ___________________________ State: ________ZIP ____________ name, company name, phone and Country: ____________________________________________________ fax number� Sign and date the form Unit Model No�: ______________________________________________... -
Page 43: Cooling Mode
Installation, Operation and Maintenance Manual C13-Series Verify that unit piping and heat exchangers will not be subject to freezing conditions� ������������������������������������������������������������������������������Yes ___________ No ___________ No cooling fluid leaks����������������������������������������������� Circuit 1 ___________ Circuit 2 _________________ Cooling Fluid Type If Glycol what percentage of mix:� ______________________ Good to a temperature of ______________________ Water / Fluid flow rate ���������������������������������������������������... -
Page 44: Basic Model Designation
Installation, Operation and Maintenance Manual C13-Series Basic Model Designation EXAMPLE: “C”, “CW”, “H”, “HW”, “MA”, “MW”, “CCW”, “E”, “B” or “BC” “C” Air-Cooled Air Conditioner 2 thru 8 Tons “CW” Water-Cooled Air Conditioner 2 thru 8 Tons “H” Air-Cooled Heat Pump 2 thru 8 Tons “HW”... - Page 45 Vertical, 3 - 35 Tons VAV, 9 - 70 Tons VAV, 12 - 90 Tons 100 – 500 CFM Portable Cooling and C13-Series Horizontal C-Series Horizontal Heating Units OmegaAir Horizontal and Vertical 2 - 10 Tons 1 - 15 Tons...
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