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Related Manuals for Retro Aire RQTH
Summary of Contents for Retro Aire RQTH
- Page 1 RQTH Vertical Packaged Terminal Heat Pump Installation, Operation & Maintenance Manual Direct Replacement for 1.5 & 2 Ton Carrier 50QT Manufactured by: ECR International Inc. 2201 Dwyer Avenue, Utica, NY 13501 Tel. 800 253 7900 www.ecrinternational.com PN 240010236 REV. D [12/15/2018]...
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Page 2: Table Of Contents
Receiving Information ..................3 Important Safety Information ................4 Dimensional/Physical Data ..................5 General Product Information .................8 Enclosure Preparation ..................9 RQTH Installation ....................10 Electrical Connections ..................11 Final Inspection and Start-up ................12 Sequence of Operation ..................15 Maintenance ..................... 16 Troubleshooting ....................17 Electrical Specifications .................. -
Page 3: Receiving Information
RECEIVING INFORMATION Shipping damage MUST be reported to the carrier IMMEDIATELY. Examine exterior. Remove cover and examine compressor and piping for signs of damage. General Information Inspection Installation shall be completed by qualified agency. Retain Check shipment against bill of lading. this manual for future reference. -
Page 4: Important Safety Information
All field wiring shall conform to requirements of authority WARNING having jurisdiction or in absence of such requirements: Tampering with RQTH is dangerous and could result • United States - National Electrical Code, ANSI/NFPA 70 in death or serious injury. Do not modify or change •... -
Page 5: Dimensional/Physical Data
DIMENSIONAL/PHYSICAL DATA Figure 1 - RQTH Installation Dimensions — Inches (mm) - Models 18 & 24 Made in USA PN 240010236 REV. D [12/15/2018]... - Page 6 DIMENSIONAL/PHYSICAL DATA Figure 2 - RQTHC/RQTH Overall Dimensions — Inches (mm) - Models 18 & 24 26.21” [665.7mm] 2.50” 28.19” [716mm] [63.5mm] 43.87” [1114.4mm] 33.94” [862mm] 18.39” [467.2mm] 27.44” [696.9mm] 13.21” [335.4mm] Table 1 - Dimensions, Shipping Weights, and Return Air Filter Sizes...
- Page 7 DIMENSIONAL/PHYSICAL DATA Figure 3 - Line Voltage Routing Knock-outs Location Removable Evaporator Models 18 & 24 Extension Line Voltage Knockouts Line Voltage Route, See Unit Wiring Diagram For Connections Made in USA PN 240010236 REV. D [12/15/2018]...
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Page 8: General Product Information
Minimum Maximum Maximum applications. Dry bulb Dry bulb Dry bulb • RQTH models are limited-range heat pumps. Heat pump 67 (19) 115 (46) 70 (24) operation will cease at approximately 40°F (4.4°C) INDOOR [Ambient air temperature °F (°C)] outdoor temperature. Cooling opertion will cease at approximately 25°F. -
Page 9: Enclosure Preparation
• Ducted return air applications require minimal spacing for service requirements. 8 " Platform If platform is used, height must make bottom of RQTH 8 " chassis flush with bottom inside edge of wall sleeve. 12.00 Height Air filter Off The Floor All models must have air filter installed prior to operation. -
Page 10: Rqth Installation
RQTH INSTALLATION Installing Into Wall Sleeve/Enclosure Figure 7 - Condensate Drain Locations DANGER Electrical shock hazard — Verify power to existing Evaporator Condensate unit (Carrier 50QT/ET) is disconnected before Drain Hose removing. Failure to do so will result in death or serious injury. -
Page 11: Electrical Connections
Choosing Thermostat WARNING • ECR offers a remote thermostat that is compatible with Model RQTH 18/24. See the latest price list for Electrical shock hazard. Disconnect all power available thermostats. It is important to choose a before removing chassis, performing any cleaning, thermostat that will match the equipment you have servicing, or maintenance. -
Page 12: Final Inspection And Start-Up
FINAL INSPECTION AND START-UP Heating CAUTION Set wall thermostat to heat mode. Moving parts can cause injury. Use caution when Set thermostat above room setting. testing unit. Failure to do so could result in minor or After few minutes of operation, warm air should moderate injury. -
Page 13: Test Mode
FINAL INSPECTION & START-UP General Figure 9 - HP Jumper (selects heat pump or Installation and wiring shall be in accordance with straight cooling) requirements of authority having jurisdiction In absence of such requirements refer to: • USA- National Electrical Code, ANSI/NFPA 70. Heat Pump Mode •... - Page 14 FINAL INSPECTION & START-UP Figure 11 - Circuit Board TEST JUMPER HEAT PUMP JUMPER Made in USA PN 240010236 REV. D [12/15/2018]...
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Page 15: Sequence Of Operation
SEQUENCE OF OPERATION Initial Power-Up Or Power Restoration Cooling Operation When power is applied, either for first time or after power • Place system switch in cool mode and adjust the failure, board will initialize. setpoint temperature below room temperature. •... - Page 16 SEQUENCE OF OPERATION • If the outdoor temperature is below approximately 40°F during a call for heating the compressor and outdoor fan will de-energize and electric heat will energize. • The compressor and electric heat do not operate simul- taneously. •...
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Page 17: Maintenance
MAINTENANCE Seasonal Start-Up And Maintenance WARNING Beginning of cooling and heating seasons, complete Electrical shock hazard. Disconnect power to RQTH mechanical check should be performed and maintenance/ before servicing or accessing control compartment. inspections performed as described below. Failure to do follow these instructions could result in Disconnect power to unit and remove necessary access death or serious injury. -
Page 18: Troubleshooting
TROUBLESHOOTING WARNING NOTICE Electrical shock hazard. Disconnect power to unit Have qualified technician conduct troubleshooting before servicing or accessing control compartment. procedures. Failure To follow these instructions could result in death or serious injury. Symptom Suggestion No heat or cooling •... - Page 19 Table 3 Indoor motor speed tap selection • For information on indoor motor speed tap selection, chart please refer to “Indoor Motor Speed Tap Selection Chart” label attached to chassis of RQTH. See Table 4. Model In. w.c. (mm 230V...
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Page 20: Electrical Specifications
Total Cooling Amps Indoor Fan Motor Total Heating Amps Locked Rotor Amps Volt Voltage Maximum Watts Maximum Circuit Ampacity Table 5 RQTH 18 Electrical Specifications Power Indoor Fan Outdoor Supply Compressor Electric Heat Unit Electrical Ratings Motor Fan Motor Volt 1–60... -
Page 21: Operational Performance Data
• Existing Carrier wall sleeve shall be retained in all applications, provided RQTH unit is installed as requried for 50QT/ET option. • Replace condenser louver. • Replace with required RQTH louver. See Figure 13 for louver option. Made in USA PN 240010236 REV. D [12/15/2018]...
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