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Installation, Operation, and Maintenance
Indirect Gas-Fired
Dedicated Outdoor Air Rooftop Unit
Models:
RRU150F*N*CA, RRU180F*N*CA, RRU210F*N*CA, RRU240F*N*CA,
RRU300F*N*CA
Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of
heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training.
Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
When working on the equipment, observe all precautions in the literature and on the tags, stickers, and labels that are
attached to the equipment.
November 2021
SAFETY WARNING
RRU-SVX02F-EN
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Table of Contents
Related Manuals for Trane RRU150F N Series
Summary of Contents for Trane RRU150F N Series
- Page 1 Installation, Operation, and Maintenance Indirect Gas-Fired Dedicated Outdoor Air Rooftop Unit Models: RRU150F*N*CA, RRU180F*N*CA, RRU210F*N*CA, RRU240F*N*CA, RRU300F*N*CA SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and air-conditioning equipment can be hazardous and requires specific knowledge and training. Improperly installed, adjusted or altered equipment by an unqualified person could result in death or serious injury.
- Page 2 POUR VOTRE SÉCURITÉ appliance is hazardous. Il est dangereux d’utiliser ou d’entreposer de l’essence ou autres liquides ou vapeurs inflammables dans des récipients ouverts à proximité de cet appareil. ©2021 Trane RRU-SVX02F-EN...
- Page 3 Hydrogen, Chlorine, Fluorine and Carbon (HCFCs). Not all refrigerants containing these compounds have the same potential impact to the environment. Trane advocates the responsible handling of all refrigerants-including industry replacements for CFCs and HCFCs such as saturated or unsaturated HFCs and HCFCs.
- Page 4 Follow EHS Policies! Failure to follow instructions below could result in death or serious injury. • All Trane personnel must follow the company’s Environmental, Health and Safety (EHS) policies when performing work such as hot work, electrical, fall protection, lockout/tagout, refrigerant handling, etc.
- Page 5 This document and the information in it are the property of inappropriés de ce produit peuvent provoquer des Trane, and may not be used or reproduced in whole or in mélanges inflammables ou conduire à un excès de part without written permission. Trane reserves the right monoxyde de carbone.
- Page 6 Introduction Revision History • Updated Model Number Descriptions chapter. • Updated System Configuration and Pre-Start chapter. • Updated Alarms and Troubleshooting chapter. • Running edits. RRU-SVX02F-EN...
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Page 7: Table Of Contents
Table of Contents Model Number Descriptions Tools Required ....8 ......35 Final System Setup . -
Page 8: Model Number Descriptions
Model Number Descriptions DIGIT 1, 2, 3 — UNIT TYPE DIGIT 19 — CONTROLS No Controls Non - DDC Controls DIGIT 4, 5 — COOLING 4.8aL - MP581 with Display CAPACITY 4.8aL_2stage_ER - MP581 with 12 = 12.5 Tons Display 15 = 15 Tons 4.8aL_3stage_ER - MP581 with... -
Page 9: General Information
General Information Compressor Nameplate WARNING The nameplate for the compressors are located on the side Hazardous Service Procedures! of the compressor. Failure to follow all precautions in this manual and on Unit Description the tags, stickers, and labels could result in death orserious injury. - Page 10 General Information Low Pressure Control Outdoor Air Temperature and Relative Humidity Sensor ReliaTel Control This factory installed combination outdoor air sensor When the LPC is opened for one continuous second, the located in the outdoor air hood is designed to sense both compressor for that circuit is turned off immediately.
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Page 11: Unit Inspection
General Information Important: The disconnect switch will be sized per NEC. UL guidelines and cannot be used in place WARNING of unit over current protection. Fiberglass Wool! Through the Base Gas Piping Exposition to glass wool fibers without all necessary PPE equipment could result in cancer, respiratory, skin The unit will include provisions for installing through the or eye irritation, which could result in death or serious... -
Page 12: Unit Clearances
General Information accumulation on the unit’s electrical and/or mechanical components. Unit Clearances WARNING Combustible Materials! Failure to maintain proper clearance between the unit and combustible materials could cause a fire which could result in death, serious injury, or property damage. Refer to unit nameplate and installation instructions for proper clearances. -
Page 13: Unit Clearances
Unit Clearances Figure 1. Typical installation clearances for single and multiple unit applications RRU-SVX02F-EN... -
Page 14: Unit/Curb Dimensions
Unit/Curb Dimensions Figure 2. Unit dimensional data 12.5-ton high efficiency Figure 3. Roof curb dimensional data 12.5-ton high efficiency RRU-SVX02F-EN... - Page 15 Unit/Curb Dimensions Figure 4. Unit dimensional data 15- through 25-ton high efficiency Figure 5. Roof curb dimensional data 15- through 25-ton high efficiency RRU-SVX02F-EN...
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Page 16: Unit Service Clearances
Unit Service Clearances Figure 6. Unit dimensional data 12.5- through 25-ton high efficiency RRU-SVX02F-EN... -
Page 17: Unit Weight/Rigging
Unit Weight/Rigging Table 1. Typical unit weights WARNING Weight (lb) Center of Gravity (in.) Heavy Objects! Model Number Shipping Length Width Failure to follow instructions below or properly lift unit RRU150F*NAB 1,782 2,150 could result in unit dropping and possibly crushing operator/technician which could result in death or RRU150F*NGB 1,826... -
Page 18: Sequence Of Operation
Sequence of Operation Terminology (HGRH) HGRHD HGRH Control Dead Band Controls RRUCM RRU Main Control Module Optional—Requires Space Temperature & Remote Operator Display RH Sensors Outdoor Damper End Switch Air Proving Switch OSSP Occupied Space Cooling Fan Failure Switch OSHO Occupied Space Heating Offset Refrigeration Capacity Controller OSRS... - Page 19 Sequence of Operation Y1 – O/Air Cooling Enable Set Point (CSP) is operator Temperature Sensor (STS) located in the supply air adjustable between 68°F and 90°F. discharge plenum. Reheat is controlled by the operator adjustable HGRH (Hot Gas Reheat) Control Dead Band Y1 - O/AIR COOLING ENABLE SET POINT (CSP): 68°F–90°F (HGRHD) set point at the RRUCM.
- Page 20 Sequence of Operation O/AIR HEATING ENABLE SET POINT (HESP): 50°F–80°F OCCUPIED SPACE COOLING SET POINT (OSSP): 65°F–80°F 60°F DEFAULT 72°F DEFAULT OCCUPIED SPACE HEATING OFFSET SET POINT 2°F–20°F OCCUPIED S/AIR HEATING SET POINT (HSP): 40°F–90°F (OSHO): 4°F DEFAULT MHSP MINIMUM HEATING SETPOINT: 45°F DEFAULT OCCUPIED S/AIR HEATING SET POINT (HSP): 40°F–90°F...
- Page 21 Sequence of Operation “Unoccupied” Heating Mode With or ROD. On call for heating the R/Air Damper remains CLOSED and the O/Air Damper OPENS. The O/Air Damper Without R/Air Damper will OPEN on call for unoccupied heating, cooling or RRUCM Energizes the O/Air Damper Actuator (ODA) dehumidification if the R/Air Damper is NOT INSTALLED.
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Page 22: Installation
It does death or serious injury and equipment damage. Do not not replace the detailed instructions called out in field install ultraviolet lights in Trane air handling the applicable sections of this manual. equipment for the intended purpose of improving indoor air quality. -
Page 23: Main Electrical Power Requirements
Installation Main Electrical Power Figure 8. Condensate trap installation Requirements Panel Enclosure 0.75 inch NPT Female Connetor Verify that the power supply complies with the unit nameplate specifications. Inspect all control panel components; tighten any loose connections. Connect properly sized and protected power supply H (2.5)* wiring to a fieldsupplied/installed disconnect switch... -
Page 24: Main Unit Power
Installation must be within 10 percent of the rated voltage stamped on the nameplate. Use only copper conductors to connect the power supply to the unit. Main Unit Power WARNING Hazardous Voltage w/Capacitors! Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. -
Page 25: Controls Using 24 Vac
Installation Controls Using 24 Vac output devices and the system components utilizing a DC analog input\output signal to the unit. Note: Resistance in excess of 2.5 ohms per conductor NOTICE can cause deviations in the accuracy of the controls. Use Copper Conductors Only! 2. - Page 26 Installation Figure 9. Space sensor field wiring (optional) RRU-SVX02F-EN...
- Page 27 Installation Figure 10. Typical field wiring diagrams for optional controls Use the following checklist in conjunction with “General Install flue assembly. Unit Requirements,” p. 22 to ensure that the unit is properly installed and ready for operation. Check all electrical connections for tightness and “point of termination”...
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Page 28: Flue Assembly Instructions
Installation Voltage Imbalance Verify that a condensate trap is installed and the piping is properly sized and pitched. Verify that the correct size and number of filters are in WARNING place. Live Electrical Components! Inspect the interior of the unit for tools and debris and install all panels in preparation for starting the unit. -
Page 29: Electrical Phasing (Three Phase Motors)
Installation motor winding temperatures that will decrease motor life. Observe the ABC and CBA phase indicator lights on If the voltage imbalance is over 2 percent, notify the the face of the sequencer. The ABC indicator light will proper agencies to correct the voltage problem before glow if the phase is ABC. -
Page 30: System Configuration And Pre-Start-Mp Unit Controller
System Configuration and Pre-Start—MP Unit Controller Alternate Unit Controller Model Figure 13. Tracer UC600: System Setup UC600 ® The Tracer™ UC600 is a BACnet unit controller that is designed to work with the Tracer SC and third-party BACnet MS/TP systems. Additional expansion modules including the XM30, XM32, and/or XM70 may be factory installed and wired as supplied options require. - Page 31 System Configuration and Pre-Start—MP Unit Controller Table 4. RRU UC600 points list Point Point Active Type Instance Point Name Value Unit Reference Priority Priority Owner S/Air Temperature Local °F UI1.analogValue O/Air Temperature Local °F UI2.analogValue Outdoor Air RH Local -24.91 UI3.analogValue Space RH (Optional) AO1/UI09.analogValue...
- Page 32 System Configuration and Pre-Start—MP Unit Controller Table 4. RRU UC600 points list (continued) Point Point Active Type Instance Point Name Value Unit Reference Priority Priority Owner O/Air Damper End Switch UI4.binaryValue Occupancy Control Input Local UI5.binaryValue Fan Status Switch Local UI6.binaryValue Emergency Stop Input UI7.binaryValue...
- Page 33 System Configuration and Pre-Start—MP Unit Controller Table 4. RRU UC600 points list (continued) Point Point Active Type Instance Point Name Value Unit Reference Priority Priority Owner Unocc Cooling Mode ModeandSetpointsDFandIFV48aPart1BacNet Unocc Heating Mode ModeandSetpointsDFandIFV48aPart1BacNet Space Heat Lockout ModeandSetpointsDFandIFV48aPart1BacNet Space Temp Sensor Failure AlarmsDFandIFV48aBacNet Space RH Sensor Failure AlarmsDFandIFV48aBacNet...
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Page 34: Start-Up
Start-Up WARNING Hazardous Service Procedures! Failure to follow all precautions in this manual and on the tags, stickers, and labels could result in death or serious injury. Technicians, in order to protect themselves from potential electrical, mechanical, and chemical hazards, MUST follow precautions in this manual and on the tags, stickers, and labels, as well as the following instructions: Unless specified otherwise, disconnect all... -
Page 35: Indirect Gas-Fired Heating Start-Up
Indirect Gas-Fired Heating Start-Up Tools Required Important: The following procedure must be followed for the unit heating section to function properly. The following procedures are to • Voltage meter (µA) be performed after all electrical and gas • Amp meter connections to the unit have been •... - Page 36 Indirect Gas-Fired Heating Start-Up Heating Mode,” p. 19 for Burner Starting and Sequence of Figure 15. Burner assembly and gas train Operation. If the burner fails to light or goes out after lighting, the burner will go into safety lock-out. A single ignition retry will occur.
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Page 37: Final System Setup
Indirect Gas-Fired Heating Start-Up Final System Setup The S87K uses separate electrodes for spark ignition and flame sensing. Use with any gas control designed for DSI application that is rated at 2.0 A or less. Includes a After completing all of the pre-start and startup 30-second (minimum) delay for use with system pre- procedures outlined in the previous sections (i.e., purge. -
Page 38: Refrigerant Capacity Controller Operation And Adjustment
Refrigerant Capacity Controller Operation and Adjustment The Refrigerant Capacity Control (RCC) is factory set at 114 psig and should not require adjustment. To check or adjust the RCC, attach refrigeration gauges to Circuit 1. As the damper closes, the suction pressure will fall. When the suction pressure reaches approximately 114 psig the refrigeration gauge will fluctuate rapidly, indicating the RCC opening point. -
Page 39: Final System Set-Up
Final System Set-Up After completing all of the pre-start and start-up procedures outlined in the previous sections (i.e., operating the unit in each of its modes through all available stages of cooling and heating), perform these final checks before leaving the unit: ... -
Page 40: Maintenance
Maintenance a straightedge placed across the fan and motor sheaves. Refer to Figure WARNING 5. Remove the belt tension gauge. The small O-ring now Hazardous Service Procedures! indicates a number other than zero on the plunger’s Failure to follow all precautions in this manual and on force scale. -
Page 41: Monthly Maintenance
Maintenance Monthly Maintenance Check the fan shaft bearings for wear. Replace the bearings as necessary. Check the supply fan belt. If the belt is frayed or worn, WARNING replace it. Refer to “Fan Belt Adjustment—Belt Drive Units,” p. 40 for belt replacement and adjustments. -
Page 42: Coil Cleaning
Maintenance Coil Cleaning separated coil fins will flush any debris from between the rows of fin. 8. Turn power back on to the unit. WARNING This procedure can be followed annually if needed to maintain adequate condenser airflow. Chemicals Hazardous Chemicals! Required: High Quality Detergent. - Page 43 Maintenance 9. If the coil remains dirty, repeat Step 7 Step Note: It is better to clean the coil from the opposite direction of normal air flow (inside of unit out) 10. Replace all panels and parts and restore electrical because this allows the debris to be pushed out power.
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Page 44: Final Process
Maintenance Final Process - connection(s) _____________________________________________________ For future reference, you may find it helpful to record the _____________________________________________________ unit data requested below in the blanks provided. _____________________________________________________ 1. Complete Unit Model Number: _____________________________________________________ _____________________________________________________ _____________________________________________________ 2. Unit Serial Number: _____________________________________________________ _____________________________________________________ _____________________________________________________ 3. -
Page 45: Alarms And Troubleshooting
Alarms and Troubleshooting Standard Unit Controller RRUCM describe these alarms and provide a guide to troubleshooting the all unit operating modes. Model UC600 Comprehensive system alarms and diagnostics are accessed through the Alarms icon at the unit display Microprocessor Control discussed later in the section, or through Tracer TU programming on connected computer. - Page 46 Alarms and Troubleshooting Table 8. TOAU UC600 alarms (continued) Table 9. TOAU UC600 troubleshooting (continued) Point Diagnostic Possible Cause Trouble Possible Cause BAS communication down Compressor limit switch(es) open OA Humidity Failed sensor or improper sensor Compressor relay not energized or failed No Compressor Source Failure installation...
- Page 47 Alarms and Troubleshooting RTRM Failure Modes WARNING Live Electrical Components! Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury. When it is necessary to work with live electrical components, have a qualified licensed electrician or other individual who has been properly trained in handling live electrical components perform these tasks.
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Page 48: Warranty
Commercial Use* Attention: Manager, Product Service GW-602-4800 This warranty is extended by Trane, to the original purchaser and to any succeeding owner of the real * This warranty is for commercial usage of said equipment property to which the Air Conditioner is originally affixed,... - Page 49 Notes RRU-SVX02F-EN...
- Page 50 Notes RRU-SVX02F-EN...
- Page 51 Notes RRU-SVX02F-EN...
- Page 52 For more information, please visit trane.com or tranetechnologies.com. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. We are committed to using environmentally conscious print practices.