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Packaged Terminal Air Conditioner (PTAC)
Packaged Terminal Heat Pump (PTHP)
Installation, Operation &
ECR International, Inc.
2201 Dwyer Avenue • Utica, New York 13501
Ph: 800.325.5279 • Web: retroaire.com
R25C/H
Maintenance Manual
Replacements for:
R25C - Climate Master/Friedrich ET,
Ice Cap RSet,
Islandaire EZ Series ET
TM
P/N 240010639 Rev. A [06/15/2014
]
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Summary of Contents for ECR R25C
- Page 1 Packaged Terminal Air Conditioner (PTAC) Packaged Terminal Heat Pump (PTHP) Installation, Operation & Maintenance Manual Replacements for: R25C - Climate Master/Friedrich ET, Ice Cap RSet, Islandaire EZ Series ET ECR International, Inc. 2201 Dwyer Avenue • Utica, New York 13501 Ph: 800.325.5279 •...
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Page 2: Table Of Contents
UL-484 Information and specifications outlined in this manual in effect at the time of printing of this manual. ECR International reserves the right to discontinue, change specifications or system design at any time without notice and without incurring any obligation, whatsoever. -
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
IMPORTANT SAFETY INFORMATION All field wiring shall conform to requirements of authority WARNING having jurisdiction or in absence of such requirements: Tampering with PTAC/PTHP is dangerous and could • United States - National Electrical Code, ANSI/NFPA result in death or serious injury. Do not modify or change this unit. -
Page 5: R40C - Dimensional/Physical Data
R25C - DIMENSIONAL/PHYSICAL DATA Figure 1 R25C/R25H Dimensions - Inches (mm) [523mm] 20.57in [484mm] [253mm] 19.06in 9.96in [65mm] 2.54in [381mm] 15.00in [143mm] [51mm] 5.63in [23mm] 2.00in .90in [485mm] 19.08in [692mm] 27.25in Made in USA P/N 240010639, Rev. A [06/15/2014... -
Page 6: Dimensional/Physical Data
DIMENSIONAL/PHYSICAL DATA Figure 2 R25C/R25H Chassis Fan Speed Switch (FSS) To use this format set your tiff output to Fresh Air Switch Print capture, 150dpi, C -Landscape, Scale (FAS) for best results R25 Base Unit Speed Thermostat Switch (FSS) R25 Control... -
Page 7: General Product Information
GENERAL PRODUCT INFORMATION Product Description • Ability to utilize 1-stage or 2-stage thermostat. 2 stage thermostat is capable of activating emergency • Available in straight cooling (PTAC) or heat pump heat if auxiliary heat source is available. systems (PTHP). • Low ambient protection — see "Microprocessor •... -
Page 8: Features
FEATURES Anti-Short Cycle Timer (Standard) Indoor Coil Freeze Protection (Standard) Prevents indoor coil from freeze up in cooling mode. Microprocessor control uses this timing to prevent • Indoor coil freeze up can occur due to a dirty air filter, compressor short-cycling. restricted or poor air flow, low refrigerant charge or low •... - Page 9 FEATURES Hydronic Heating (Optional) Optional Wall-Mounted Thermostats Hydronic heat package may be selected in lieu of electric PTAC/PTHP compatible thermostats. heat. Heating operation is same as that of units with • Manufacture offers single stage, cool/heat, thermostat electric heat. that can be used in all RetroAire cooling, heating or heat pump applications.
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Page 10: Installation Preparation
INSTALLATION PREPARATION Each unit must have separate branch circuit protected DANGER by fuse or breaker. Refer to unit rating plate for proper Electrical shock hazard — Verify power to existing wire and breaker or fuse size. Use of extension cords is unit is disconnected before removing. -
Page 11: Installation
INSTALLATION Installation Connecting accessory field installed Aquastat. (If ordered) Verify existing wall thickness. Distance from A. Remove black jumper wire located on bottom panel condenser coil to outdoor louver varies with wall sleeve of control box. This is terminated with 2-position depth. - Page 12 INSTALLATION Figure 3 R25 Baffle Direction Baffles Figure 4 - Foam Tape Installation Install 1/2" x 1/2" Foam Tape The Right Fit for Comfort P/N 240010639, Rev. A [06/15/2014...
- Page 13 INSTALLATION Installation Connecting accessory field installed Aquastat. (If ordered) Verify existing wall thickness. Distance from condenser coil to outdoor louver varies with wall sleeve A. Remove black jumper wire located on bottom panel depth. Two sets of air baffles are included with each of control box.
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Page 14: Sequence Of Operation
SEQUENCE OF OPERATION Sequence of Operation Figure 5 - Control Board • R_ _C units are straight cool, single stage air conditioners available with electric or hydronic heat. • R_ _H units are limited range, single stage heat pump. TEST Mechanical compression heating (heat pump mode) is Configuration Jumper... - Page 15 SEQUENCE OF OPERATION • If equipped with Motorized Fresh Air Damper, and is NOTE: Remote-Mount Heating Operation depends on active with Fresh Air Switch [FAS], damper will open features of wall-mounted thermostat. By default fan will with call for the indoor fan. cycle with call for Heating.
- Page 16 SEQUENCE OF OPERATION B.3 “Remote Wall Thermostat Controls” C. If unit is equipped with Motorized Fresh Air Damper, and is activated with Fresh Air Switch Cooling and Heating operates identical to unit [FAS], damper opens with call for indoor fan. mount controls.
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Page 17: Final Inspection & Start-Up
FINAL INSPECTION & START-UP Before Operating The Unit Figure 6 - Proper Air Flow Diagram Install unit per the instructions outlined in this manual and all applicable local and national codes. Verify electrical supply matches electrical requirements of the unit, and unit is properly grounded. Examine control box. -
Page 18: Test Mode
FINAL INSPECTION & START-UP Electrical Connections Figure 8 - HP Jumper (selects heat pump or straight cooling) Installation and wiring shall be in accordance with requirements of authority having jurisdiction In absence of such requirements refer to: • USA- National Electrical Code, ANSI/NFPA 70. Heat Pump Mode •... - Page 19 FINAL INSPECTION & START-UP Figure 10 TEST jumper (selects normal or test mode) TEST JUMPER HEAT PUMP JUMPER Made in USA P/N 240010639, Rev. A [06/15/2014...
- Page 20 FINAL INSPECTION & START-UP Start Up Figure 11 Typical Representation - Unit Mount Verify unit is secure and level. Control Heat pump units only — Verify thermostatic drain pan valve is operating correctly. Valve should be closed if temperature is above 60° F and open if below 60°F. Test fresh air damper, if equipped, by setting damper door switch to "YES".
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Page 21: Important Information
FINAL INSPECTION & START-UP Straight Cooling PTAC's Heating Cycle — Hydronic Option Important Information Before Starting The unit: • Room temperature must be above 65°F (18°C) for • Verify motor valve is rated for correct voltage. compressor to operate in cooling mode on PTAC's with •... - Page 22 FINAL INSPECTION & START-UP Heat Pump PTHP's If cooler room temperature is desired, adjust thermostat to cooler temperature setting. Heating Unit is equipped with reversing valve, energized for cooling mode stops and compressor and outdoor fan stop. and de-energized in heating mode. Indoor fan will switch off after sixty-second purge time Cooling Cycle —...
- Page 23 FINAL INSPECTION & START-UP Auxiliary Heating Operation — Heat Pump Units — Outdoor Temperature Below 40°F (4°C) — Hydronic Option Room temperature must be below 85°F (29°C) for hydronic heater to operate on PTHP's with unit-mounted controllers. Hydronic valve is 24Vac normally open valve. Should power be lost to the unit, the valve will default to open position.
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Page 24: Maintenance
MAINTENANCE WARNING Figure 12 - Manual Reset Limit Switch Electrical shock hazard. Disconnect power to unit Reset Button before servicing or accessing control compartment. Failure to do follow these instructions could result in death or serious injury. *Note: NOTICE Button will pop out when limit Perform regular service and maintenance by switch opens. - Page 25 MAINTENANCE Troubleshooting Sensors Air leaks may make the conditioned area See figure 31 for location of sensor connections to the uncomfortably drafty or produce noises. Visually control board. inspect foam gasket between wall and unit, taking If temperature response of indoor or outdoor sensor note of separation between air inlet for condenser is not correct, disconnect sensor from control board and condenser coil discharge.
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Page 26: 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 27: Performance Data
PERFORMANCE DATA Table 3 R25 C/H Performance Data Fresh Air Indoor Air Shipping Sensible Cooling Heat Pump Inlet Model Flow Weight Heat Flow Ratio Btuh (kW) Btuh (kW) CFM (L/s) CFM (L/s) lbs (Kg) R_ _C 09 9,000 (2.6) 0.74 8.98 340 (160) 35 (17) -
Page 28: Electrical Specifications
ELECTRICAL SPECIFICATIONS Table 5 R25 - 9,000 BTU Electrical Specifications Power Supply Compressor Fan Motor Electric Heat Unit Electrical Ratings Volt 1–60 Volt Volt MOCP Plug 1963 10.2 12.8 6-15P 2400 10.4 11.2 13.14 2454 11.8 12.6 15.7 208/ 22.2 0.08 3000 13.8... - Page 29 ELECTRICAL SPECIFICATIONS Table 6 R25C - 15,000 BTU Electrical Specifications Power Supply Compressor Fan Motor Electric Heat Unit Electrical Ratings Volt 1–60 Volt Volt MOCP Plug 10.1 1963 10.2 12.8 6-15P 2400 10.4 11.2 14.0 2454 11.8 12.6 15.7 208/ 0.125...
- Page 30 ELECTRICAL SPECIFICATIONS LEGEND Rated Load Amps Full Load Amps Horse Power Watts Heater Amps Total Cooling Amps Total Heating Amps Minimum Circuit Amps MOCP Maximum Over Current Protection The Right Fit for Comfort P/N 240010639, Rev. A [06/15/2014...
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Page 31: Limited Product Warranty
WHAT RETROAIRE WILL WARRANT: ECR will provide a replacement for or, at the discretion of RetroAire, repair any functional component that proves to be defective in material or workmanship, under normal maintenance and operating conditions, within the prescribed warranty period. - Page 32 ECR International, Inc. 2201 Dwyer Avenue • Utica, New York 13501 Phone: 1.800.325.5279 • Web: retroaire.com P/N 240010xxx, Rev. A [05/12/2014...
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