TABLE OF CONTENTS Warranty And Return Policy ..................................2 General Safety Instructions ..................................3 Receiving The Air Conditioner ..................................3 Handling And Testing The Air Conditioner ..............................3 Installation Instructions ....................................4 Dimension Drawing .....................................5 Mounting Cutout Dimensions ..................................6 Wire Diagrams And Schematics ..................................7 Wire Diagram, Level I, 115 V ....................................7 Schematic, Level I, 115 V ......................................
GENERAL SAFETY INSTRUCTIONS Observe the following general safety instructions for installation and operation of this product: • This appliance is for installation only in locations not accessible to the general public. • This appliance is not intended for use by persons, including children, with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning the use of the appliance by a person responsible for their safety.
INSTALLATION INSTRUCTIONS 1. Inspect air conditioner and verify functionality before mounting the air conditioner, see HANDLING AND TESTING THE AIR CONDITIONER on page 3. 2. Using the cutout dimensions shown in this manual, prepare the air “IN” and air “OUT” openings, and mounting bolt hole pattern for the enclosure.
DIMENSION DRAWING CLEANABLE REUSABLE ALUMINUM INLET FILTER. 9.71 10.00 8.76 9.39 TOP VIEW 6.38 1/4-20 UNC (8) ENCLOSURE AIR IN 23.00 21.70 18.45 COOL AIR OUT 15.20 15.53 AMBIENT 14.95 AIR IN 5.92 4.45 4.33 FRONT VIEW 6.58 SEE NOTE 2 1.14 WARM AIR OUT...
Schematic, Level I with Electric Heater, 115 V 10-1001-777 REV O Note: For voltage, hertz, and options not shown in this manual, refer to the wiring diagram attached to the unit nVent.com/HOFFMAN...
Schematic, Level II and III, 115 V 10-1001-548 REV 2 Note: For voltage, hertz, and options not shown in this manual, refer to the wiring diagram attached to the unit. nVent.com/HOFFMAN...
Schematic, Level II and III, 230 V Note: For voltage, hertz, and options not shown in this manual, refer to the wiring diagram attached to the unit. nVent.com/HOFFMAN...
PARTS LIST Part Description Part No. Condenser Coil 23200100SP Fan Pan 23200300SP Condenser Fan See Components List Evaporator Coil 23200200SP Inlet Air Filter, Reusable Aluminum 89171353SP Compressor See Components List Cooling Relay (Level II/II option) 10100521SP Control Transformer (Level II/III option) See Components List Temperature Controller (Level II/III option) 10110614SP...
TECHNICAL INFORMATION Design Data Max Ambient Full Load BTU/Hr @ Max Temperature Shipping Model Voltage Phase MOPD Amps Cooling Amps Ambient Temperature °F/°C Weight lb/kg CR230216GXXX 115 50/60 4.1/4.0 1600/1600 131/55 57/26 CR230226GXXX 230 50/60 1.5/1.7 1660/1730 131/55 57/26 CR230246GXXX 460 50/60 0.8/0.9 1660/1730...
MAINTENANCE Performing preventative maintenance (PM) helps to keep your nVent HOFFMAN AC unit operating at the highest most efficient levels. Maintenance should be performed at least twice a year, more frequently when in challenging conditions, such as dusty, high humidity, high heat, oily or corrosive environments.
Cleaning Instructions: 1. Flush the filter with warm water from the exhaust side to the intake side. Do not use caustics. 2. After flushing, allow filter to drain. Placing it with a corner down will assure complete drainage. 3. Recoat the filters with RP Super Filter Coat adhesive. When spraying filter do so from both sides for maximum concentration of adhesive.
PREVENTATIVE MAINTENANCE/INSPECTION Maintenance/Inspection Recommendations (Perform at least 2 times per year – more frequently as required by operational environment) Last Completed Check Point Description Date Date Date Date Run unit through all modes of operation and record temperatures, Operational Inspection voltages, and amperes Comments: Visually inspect unit for damage, cleanliness, missing, loose, or...
TROUBLE SHOOTING “Unit wont Cool” w/ Manual Tstat 115 V/230 V/460 V Does the unit have correct Correct voltage and retest OR supply voltage? Contact certified electrician. Clean and re-test Is the Verify filter Contact Is the Does Technical enclosure Does evaporator condenser...
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Compressor wont start (Unit w/ Manual Tstat) Replace capacitor(s) If applicable: Check Is the internal temp Verify voltage at capacitor(s) for 10°F above set point. compressor? proper capacitance. Possible Causes: - Loose Wiring or connections Adjust Tstat setting If applicable: Check Replace compressor (turn clockwise) to call for open overload.
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Evaporator Coils Freezing (Unit w/ Manual Tstat) Possible Causes: - Electrical connections Is voltage to - Bad fan Is the fan running? inoperable fan correct? Possible Causes: - Faulty electrical connections for fan. Is the enclosure properly Replace seals and gaskets Does the unit have sealed (No outside air on enclosure.
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Unit Tripping Breaker (Controller or Manual Tstat) Check power connections and Does breaker components for possible short circuit. trip instantaneosly? Verify correct power supply. Does breaker trip when Is the compressor shorted Replace Compressor Compressor comes on? to ground? Check electrical connections Are fuse and breaker the correct and component amp draw.
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