Table of Contents
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Installation, Operation,
and Maintenance
Packaged Rooftop Air Conditioners
Foundation™ Gas/Electric
15 – 25 Tons, 60Hz
Model Numbers:
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.
December 2014
GAC180-300
GAD180-300
SAFETY WARNING
RT-SVX51B-EN
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Summary of Contents for Ingersoll-Rand GAC180-300
- Page 1 Packaged Rooftop Air Conditioners Foundation™ Gas/Electric 15 – 25 Tons, 60Hz Model Numbers: GAC180-300 GAD180-300 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 Introduction Read this manual thoroughly before operating or servicing this unit. WARNING Warnings, Cautions, and Notices Proper Field Wiring and Grounding Required! Safety advisories appear throughout this manual as Failure to follow code could result in death or serious required. Your personal safety and the proper operation of injury.
- Page 3 Introduction Revision Summary WARNING RT-SVX51B-EN (30 Dec 2014) Proper Field Wiring and Grounding • Updated Warranty section Required! All field wiring MUST be performed by qualified personnel. Improperly installed and grounded field wiring poses FIRE and ELECTROCUTION hazards. To avoid these hazards, you MUST follow requirements for field wiring installation and grounding as described in NEC and your local/state electrical codes.
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Page 4: Table Of Contents
Table of Contents Model Number Description Resetting Cooling and Heating Lockouts . .33 ....5 Unit Economizer Control (ECA) ..33 General Information . -
Page 5: Model Number Description
Model Number Description Model Number Description Low Leak Economizer, Dry Bulb Digit 1 — Unit Type 6. Fault Detection and Diagnostics w/o Barometric Relief (FDD) is available on Low Leak Packaged Gas/Electric Low Leak Economizer, Reference Economizers only. Digit 2 — Efficiency Enthalpy w/o Barometric Relief Low Leak Economizer, ASHRAE 90.1 - 2010... -
Page 6: General Information
General Information Unit Inspection additional respiratory protection. Use the appropriate NIOSH approved respiration in these situations. As soon as the unit arrives at the job site: First Aid Measures • Verify that the nameplate data matches the data on the •... -
Page 7: System Input Devices & Functions
General Information JADE Economizer Control (For Low Leak To configure the LLE controller, set EXH1 SET (or EXH1 L & EXH1 H with two-speed fan) in the SETPOINTS menu. 2- Economizer (LLE) Only) speed fan mode requires AUX2 I set as W. The JADE controller is a standalone economizer controller Evaporator Frost Control (Optional) that provides outdoor air dry-bulb economizer control... -
Page 8: Initiation Of Operating Modes - Jade Control
General Information VENTMIN = desired minimum position w/DCV & occupied status (2-speed applications require LO & HI settings) ADVANCED SETUP Menu: CO2 ZERO = set to detector's start level CO2 SPAN = detector's max level minus start level Attach the sensor to the CO and "R"... -
Page 9: Dimensional Data
Dimensional Data Figure 1, p. 12 illustrates the minimum operating and service clearances for either a single or multiple unit installation. These clearances are the minimum distances necessary to assure adequate serviceability, cataloged unit capacity, and peak operating efficiency. Providing less than the recommended clearances may result in condenser coil starvation, “short-circuiting”... - Page 10 Dimensional Data Figure 2. Gas/electric units — overview Figure 3. Gas/electric units — front & side views — 15–25 tons standard efficiency RT-SVX51B-EN...
- Page 11 Dimensional Data Figure 4. Gas/electric units — plan view — 15–25 tons standard efficiency 82 1/4" Figure 5. Foundation units — back view (horizontal configuration) — 15–25 tons standard efficiency RT-SVX51B-EN...
- Page 12 Dimensional Data Figure 6. Roof curb —15–25 tons standard efficiency Figure 7. Downflow duct connections—field fabricated 15–25 tons standard efficiency Notes: • Duct flanges mount 7-7/16” down inside the curb on the 1-1½” curb flanges. • Roofcurb is intended for downflow use only. 1”...
- Page 13 Dimensional Data Figure 8. Downflow unit clearance — 15–25 tons standard efficiency Figure 9. Barometric relief and economizer— 15–25 tons standard efficiency MOTORIZED DAMPER FOR LOW LEAK) FOR LOW LEAK) BAROMETRIC RELIEF IS FOR USE WITH A DOWNFLOW ECONOMIZER ONLY RT-SVX51B-EN...
- Page 14 Dimensional Data Figure 10. Manual damper — 15–25 tons standard efficiency RT-SVX51B-EN...
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Page 15: Unit Weights
Unit Weights Table 1. Maximum unit & corner weights (lb) and center of gravity dimensions (in.) (a), (b) Weights (lb) Corner Weights Center of Gravity (in.) Unit Tons Model No. Shipping Length Width GAC180A 2183 1864 54” 37” 17½ GAC210A 2238 1918 55”... -
Page 16: Installation
Installation Unit Foundation Check with a roofing contractor for proper waterproofing procedures. Ductwork WARNING Elbows with turning vanes or splitters are recommended Risk of Roof Collapsing! to minimize air noise due to turbulence and to reduce static Confirm with a structural engineer that the roof pressure. - Page 17 Installation Main Electrical Power Requirements • Assemble and install the roof curb (if applicable). Refer to the latest edition of the curb installers guide that • Verify that the power supply complies with the unit ships with each curb kit. nameplate specifications.
- Page 18 Installation External Vent Hood Installation 3. Install the vent hood on the gas heat panel using the screws removed in Step 1. Make sure it is properly secured on to the panel. WARNING Figure 16. Vent hood installation Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing.
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Page 19: Main Unit Power
Installation Figure 18. Factory installed down flow TCO1 limit NOTICE: location Use Copper Conductors Only! Unit terminals are not designed to accept other types of conductors. Failure to use copper conductors could result in equipment damage. Note: If the unit is not equipped with an optional factory installed nonfused disconnect switch or circuit breaker, a field supplied disconnect switch must be installed at or near the unit in accordance with the... - Page 20 Installation Optional TBUE Wiring (Through the Base 1. Use copper conductors unless otherwise specified. Electrical Option) 2. Ensure that the AC control wiring between the controls and the unit’s termination point does not exceed three • Location of the applicable electrical service is (3) ohms/conductor for the length of the run.
- Page 21 Installation Gas Heat Data Figure 21. Schematic diagram for field gas piping to units Table 3. Gas heater operating data Heating Input Rate— Btu/h 400,000 350,000 320,000 240,000 Minimum Supply Gas 5.5/11.0 5.0/11.0 4.5/11.0 4.5/11.0 Pressure Natural/LP Manifold Gas Pressure Combustion Blower Suction -0.6 to - -0.6 to -...
- Page 22 Installation • Close the field supplied main power disconnect switch Volt 1 + Volt 2 + Volt 3 or circuit protector switch that provides the supply power to the unit. • V1, V2, V3 = Line Voltage Readings WARNING • VD = Line Voltage reading that deviates the farthest Live Electrical Components! from the average voltage.
- Page 23 Installation Checklist Use the following checklist in conjunction with the general checklist (“General Unit Requirements, ” p. 16) to ensure that the unit is properly installed and ready for operation. WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized.
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Page 24: Factory-Mounted Unit Options
Factory-Mounted Unit Options Unit Disconnect (FIYUDC) Note: Wire size for the length of run should be determined using the circuit ampacity found on the unit nameplate and the N.E.C. WARNING 4. Route low voltage (class II), control wiring through hole in base of unit but not through high voltage Hazardous Voltage w/Capacitors! conduit. -
Page 25: Through The Base Gas Utility Option
Table 6. Piping hole dimension NEC and your local/state electrical codes. Failure to Model Dimension follow code could result in death or serious injury. GAC180-300, GAD180-300 1 3/16" Figure 24. Thru-the-base gas piping installation RT-SVX51B-EN... -
Page 26: Pre Start
Pre Start Verifying Proper Air Flow (Units with Belt Drive Indoor Fan) Much of the systems performance and reliability is closely associated with, and dependent upon having the proper airflow supplied both to the space that is being conditioned and across the evaporator coil. The indoor fan speed is changed by opening or closing the adjustable motor sheave. -
Page 27: Start Up
Start Up Standard Economizer Start-Up mode and all components removed or failed will alarm in the operation mode. 1. Set the minimum position setpoint for the economizer • Upon power up (or after a power outage or brownout), to the required percentage of minimum ventilation the JADE controller module begins a 5 minute power using the setpoint potentiometer located on the up delay before enabling mechanical cooling. -
Page 28: Heating Start-Up
Start Up types are listed in Table 7, p. 28. The appropriate oil • Verify that the Remote panel “System” selection charge is listed in Table 8, p. switch, “Fan” selection switch, and “Zone Temperature” settings for automatic operation are Table 7. -
Page 29: Maintenance
Maintenance Make sure all personnel are standing clear of the unit 6. Compare the “force” scale reading (Step 5) with the before proceeding. The system components will start appropriate “force” value listed in Table 9, p. 29. If the when the power is applied. “force”... -
Page 30: Monthly Maintenance
Maintenance Monthly Maintenance • Remove any corrosion present on the exterior surfaces of the unit and repaint these areas. Before completing the following checks, turn the unit OFF • Generally inspect the unit for unusual conditions (e.g., and lock the main power disconnect switch open. loose access panels, leaking piping connections, etc.). -
Page 31: Final Process
Maintenance Due to the soft material and thin walls of the MCHE coils, (2) Unit Serial Number: the traditional field maintenance method recommended _____________________________________________________ for Round Tube Plate Fin (RTPF) coils does not apply to (3) Wiring Diagram Numbers (from unit control panel) microchannel coils. -
Page 32: Troubleshooting
Troubleshooting 7. Refer to the individual component test procedures if other components are suspect. WARNING Hazardous Service Procedures! Failures The maintenance and troubleshooting procedures Heating Failure recommended in this section of the manual could result in exposure to electrical, mechanical or other potential Verify Heat Failure by Ignition Module safety hazards. -
Page 33: Unit Economizer Control (Eca)
Troubleshooting Resetting Cooling and Heating 1. Navigate to the desired alarm. 2. Press Lockouts 3. “ERASE?” is displayed. Cooling Failures and Heating Lockouts are reset in an 4. Press identical manner. 5. “ALARM ERASED” is displayed. “Method 1, ” p. 33 explains resetting the system from the 6. -
Page 34: Wiring Diagrams
2313-2242 GAC180-300, GAD180-300, 60Hz, 2-Stage Gas Heat w/VFD Connection 208-230 2313-2233 GAC180-300, GAD180-300, 60Hz, 2-Stage Gas Heat w/VFD Control Box Connection 460-575 2313-2237 GAC180-300, GAD180-300, 60Hz, 2-Stage Gas Heat w/VFD Note: GAC180-300 units are not available with Low Leak Economizer (LLE). RT-SVX51B-EN... -
Page 35: Warranty
Warranty Central Air Conditioner Trane 2701 Wilma Rudolph Blvd. Clarksville, TN 37040-1008 GAC, GAD (Parts Only) Attention: Manager, Product Service Models Less than 20 Tons for Commercial GW-602-4800 Use* * This warranty is for commercial usage of said equipment and not applicable when the equipment is used for a This warranty is extended by Trane, to the original residential application. - Page 36 The warranty and liability set forth herein are in lieu of all other warranties and liabilities, whether in contract or in negligence, express or implied, in law or in fact, including implied warranties of merchantability and fitness for particular use. In no event shall the Company be liable for any incidental or consequential damages.
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