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Summary of Contents for nvent HOFFMAN T Series
- Page 1 We connect and protect T-Series Air Conditioner T20 Model Instruction Manual R513A P/N 89114993 Rev. I...
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Page 2: Table Of Contents
Note: Some of the information in this manual may not apply if a special unit was ordered. If additional drawings for a special unit are necessary, they have been inserted. Contact nVent Equipment Protection if further information is required. WARRANTY AND RETURN POLICY https://HOFFMAN.nVent.com/en-us/cooling-warranty-registration... -
Page 3: Important Notice
Damage evident upon receipt should be noted on the freight bill. Damage should be brought to the attention of the delivering carrier – NOT to nVent Equipment Protection – within 15 days of delivery. Save the carton and packing material and request an inspection. -
Page 4: Installation Instructions
1/4-20 MTG HOLES(12) MOUNTING IS BEHIND REMOVEABLE FRONT COVER. 9.38(3) (6 ON BACK FACE - CLEANABLE, REUSEABLE ALUMINUM INLET FILTER 6 BEHIND FRONT COVER) SLIDES OUT SLOT IN BOTTOM OF FRONT COVER. 89115040 REV A 89115040 1/2" DRAIN STUB 7.53 nVent.com/HOFFMAN... -
Page 5: Mounting Cutout Dimensions
MOUNTING CUTOUT DIMENSIONS EXTERNALLY MOUNTED INTERNALLY MOUNTED Cutout Instructions (As viewed from outside of enclosure) Note: Dashed lines represent air conditioner. Note: Mounting Gasket Adheres to Air Conditioner nVent.com/HOFFMAN... -
Page 6: Wire Diagrams And Schematics
WIRE DIAGRAMS AND SCHEMATICS T20 without Heater Wire Diagram 89114860 REV E nVent.com/HOFFMAN... -
Page 7: T20 With Or Without Heater Schematic
T20 with or without Heater Schematic nVent.com/HOFFMAN... -
Page 8: T20 With Heater Wire Diagram
T20 with Heater Wire Diagram 89109602 REV G nVent.com/HOFFMAN... -
Page 9: Component List
See Components List Capacitor, Impeller, Condenser See Components List Thermostat, SPST, 55-100F 10106116SP Coil, Evaporator 89050853SP Capacitor, Compressor See Components List Compressor See Components List Filter, Drier, Refrigerant 52602803SP Coil, Condenser 20102001SP Mounting Gasket Kit** 20100008SP Note: **Mounting gasket not shown nVent.com/HOFFMAN... -
Page 10: Technical Information
Turn the heating thermostat dial counter clockwise at a rate of 1°F per second until the heater starts (read change in amps of unit to determine when heating starts) and note the reading on the dial. Compare the two readings, they must be within ±3°F of each other. nVent.com/HOFFMAN... -
Page 11: Principles Of Operation
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. -
Page 12: Condenser And Evaporator Air Movers
CAUTION: Operation of the air conditioner in areas containing airborne caustics or chemicals can rapidly deteriorate filters, condenser coils, blowers and motors, etc. Contact nVent Equipment Protection for special recommendations. Refrigerant loss Each air conditioner is thoroughly tested prior to leaving the factory to insure against refrigeration leaks. Shipping damage or microscopic leaks not found with sensitive electronic refrigerant leak detection equipment during manufacture may require repair or recharging of the system. -
Page 13: Preventative Maintenance/Inspection
Inspect refrigeration tubing/lines for signs of leaks, rubbing, corrosion, or damage. Check the compressor for proper Refrigeration System operation, mounting, and visible signs of exposure to high heat Comments: Update maintenance records on the unit and in the Maintenance Records management system Comments: nVent.com/HOFFMAN... -
Page 14: Trouble Shooting
80°F stop screw can be overload. circuit closed ? removed to adjust T-stat Possible Causes: lower for testing purposes) - Bad Door Switch Does thermostat close? - Bad Transformer - Bad Door Switch Relay Replace - Loose wiring overload Replace Thermostat nVent.com/HOFFMAN... - Page 15 Replace Compressor to ground? Compressor comes on? Check electrical connections Are fuse and breaker the correct and component amp draw. type and sized accordingly? Check electrical connections and component amp draw. Replace fuse or breaker with correct type and size. nVent.com/HOFFMAN...
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Page 16: F-Gas Information
Contact Tech Support 763-422-2211 ext 1-2-3 Properly seal cabinet For additional technical support: • Call 763-422-2211 or • Email cooling.service@nVent.com or • Download Field Service Request (FSR) from: http://HOFFMAN.nVent.com/en-us/cooling-field-service-request F-GAS INFORMATION T200216GXXX T200226GXXX T200246GXXX Refrigerant Kühlmittel... - Page 17 nVent.com/HOFFMAN...
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- Page 20 Our powerful portfolio of brands: ©2024 nVent. All nVent marks and logos are owned or licensed by nVent Services GmbH or its affiliates. All other trademarks are the property of their respective owners. nVent reserves the right to change specifications without notice.
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