TRANE GCC180-300 Packaged Rooftop Air Conditioners User Guide
- June 2, 2024
- Trane
Table of Contents
User Guide
Packaged Rooftop Air Conditioners
Foundation™- Gas/Electric
15 – 25 Tons – 60 Hz
Model Number: GCC180-300
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. When working on
the equipment, observe all precautions in the literature and on the tags,
stickers, and labels that are attached to the equipment.
Warnings, Cautions, and Notices
Read this manual thoroughly before operating or servicing this unit. Safety advisories appear throughout this manual as required. Your personal safety and the proper operation of this machine depend upon the strict observance of these precautions.
The three types of advisories are defined as follows:
WARNING Indicates a potentially hazardous situation which,if not avoided,
could result in death or serious injury.
CAUTION Indicates a potentially hazardous situation which,if not avoided,
could result in minor or moderate injury. It could also be used to alert
against unsafe
NOTICE Indicates a situation that could result in equipment or property-
damage only accidents.
Important Environmental Concerns
Scientific research has shown that certain man-made chemicals can affect the
earth’s naturally occurring stratospheric ozone layer when released to the
atmosphere. In particular, several of the identified chemicals that may affect
the ozone layer are refrigerants that contain Chlorine, Fluorine and Carbon
(CFCs) and those containing Hydrogen, Chlorine, Fluorine and Carbon (HCFCs).
Not all refrigerants containing these compounds have thesame potential impact
to the environment. Trane advocates the responsible handling of all
refrigerants-including industry replacements for CFCs such as HCFCs and HFCs.
Important Responsible Refrigerant Practices
Trane believes that responsible refrigerant practices are important to the
environment, our customers, and the air conditioning industry. All technicians
who handle refrigerants must be certified according to local rules. For the
USA, the Federal Clean Air Act (Section 608) sets forth the requirements for
handling, reclaiming, recovering and recycling of certain refrigerants and the
equipment that is used in these service procedures. In addition, some states
or municipalities may have additional requirements that must also be adhered
to for responsible management of refrigerants. Know the applicable laws and
follow them.
WARNING
Proper Field Wiring and Grounding Required!
Failure to follow code could result in death or serious injury. All field
wiring MUST be performed by qualified personnel. Improperly installed and
groundedfield 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.
WARNING
Personal Protective Equipment Required!
Installing/servicing this unit could result in exposure to electrical,
mechanical and chemical hazards. Before installing/servicing this unit,
technicians MUST put on all Personal Protective Equipment (PPE) recommended
for the work being undertaken. ALWAYS refer to appropriate SDS sheets and OSHA
guidelines for proper PPE. When working with or around hazardous chemicals,
ALWAYS refer to the appropriate SDS sheets and OSHA guidelines for information
on allowable personal exposure levels, proper respiratory protection and
handling recommendations. If there is a risk of arc or flash, technicians MUST
put on all necessary Personal Protective Equipment (PPE) in accordance with
NFPA70E for arc/flash protection PRIOR to servicing the unit. Failure to
follow recommendations could result in death or serious injury.
WARNING
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. Where local regulations are more stringent than these policies, those regulations supersede these policies.
- Non-Tran personnel should always follow local regulations.
General Information
Important: Remember the following instructions at all times.
WARNING
Hazard of Explosion or Fire!
Failure to follow instructions below could result in death or serious injury
and equipment or property damage.
Do not store or use gasoline or other flammable vapours and liquids in the
vicinity of this or any other appliance.
IF YOU SMELL GAS, follow instructions below:
- Do not try to light any appliance.
- Do not touch any electrical switch.
- Do not use any phone in your building.
- Open windows and doors.
- Alert others and evacuate building immediately.
- From a phone outside of the building, immediately call your gas supplier. Follow the gas supplier’s instructions. If you can not reach your gas supplier, call the fire department.
WARNING
Safety Hazards!
Failure to follow instructions could result in death, serious injury and
equipment or property damage.
- Do not use this furnace if any portion has been under water as it may have rendered the unit hazardous to operate. Immediately call a qualified service technician to inspect the furnace and to replace any part or the control system and any gas control which has been under water.
- Should overheating occur, or the unit gas valve fail to shut off, close the gas valve to the furnace before shutting off the electrical supply.
WARNING
Safety Hazards!
Failure to follow instructions could result in death or serious injury.
- Never perform any maintenance procedures until the electrical power to the unit is turned off.
- Never perform any maintenance procedures until the gas valve is the gas supply line is turned off.
- Never remove any panels from the unit while it is operating.
- Never remove panels or parts from the unit that are not discussed in this manual.
- Never cover the unit since it is designed to operate year round.
Your unit is of complex design. To ensure that it performs safely and give long lasting services, some of the maintenance work must be performed bya qualified service person. When a service person is referred to in this manual it is describing a service technician who has had special training or a number of years experience in servicing this type of equipment. It is your responsibility to select a qualified service company that can provide a service person of this calibre.
Thermostat
Room thermostats are delicate temperature sensing controls. Their main
function is to energize and de-energize the heating or cooling circuit to
maintain the temperature setting you select.
Many thermostats contain a room thermometer to indicate the approximate room
temperature and a temperature scale at the adjustment indicator to select the
desired indoor air temperature. In addition, most thermostats have a selector
mode switch with Heat, Off and Cool positions and a fan switch with On and Off
positions.
When the switch is positioned at Off your unit will not operate in either the
heat or cool modes. If the selector switch is set at Heat the unit will
automatically cycle on and off to maintain the desired temperature setting.
The unit will also operate automatically when the selector switch ispositioned
at Cool.
The fan selector switch can be used to operate the indoor fan continuously y
positioning it at On. When set to Auto the fan will only operate when required
during the heating or cooling cycles.
To ensure that the thermostat operates properly, it must be level and
positioned to avoid the influence of such external heat sources as lamps,
televisions or other heat producing appliances.
Air Filters
Filters are to be used with this unit. Units ship from the factory with
filters installed.
It is very important to keep the central duct system air filters clean. Be
sure to inspect them at least once each month when the system is in constant
operation. (In new homes, check the filters every week for the first 4 weeks.)
See Table 1 for the required filter size(s).
If you have disposable type filters, replace them with new filters of the same
type and size. Do not attempt to clean disposable filters. Permanent type
filters can be cleaned by washing them with a mild. detergent and water.
Ensure that the filters are thoroughly dry before reinstalling them in the
unit (or duct system).
It may be necessary to replace permanent filters annually if washing fails to
clean the filter, be sure to use the same type and size as was originally
installed.
Table 1. Recommended standard filters
Filter Size
Unit Model umber| Inches| Millimeters
GCC180-300| (8) 20x25x2| (8) 508x630x50
Heating System
Heating Cycle Operation
Your unit’s heating system has a solid-state electronic ignition control that
lights the furnace burners each time the thermostat calls for heat. At the end
of each heating cycle the furnace burners are extinguished. This type of
system is called Direct Spark Ignition (DSI).
A normal heating cycle begins when the air temperature drops below the
thermostat setting. The thermostat then energizes the heating electrical
circuit that starts and controls the furnace burners. Shortly after the
burners gnite the indoor fan starts and circulates warm air through the
conditioned space.
When the air temperature rises to the thermostat setting the thermostat
deenergizes the heating electrical circuit, which in turn extinguishes the
burners. The indoor fan continues to circulate warm air until most of the
heat is removed from the unit’s combustion chamber.
Safety Controls
- Your unit is equipped with an automatic reset safety limit control to prevent overheating. When this control opens, it shuts down the heating electrical circuit until the unit cools down sufficiently. Inadequate airflow (i.e., caused by dirty filters or defective fan motor) may cause the unit to cycle on and off as the limit trips and automatically resets. If you suspect that the unit is cycling on its controlling, immediately contact a service person for instructions.
- If flames from the burner are not properly drawn into the heat exchange, a Flame Roll out Protection Control will open causing the furnace to shut off. The cause must be investigated by a qualified service person.
- If installed, the condensate overflow switch will shut down the unit before a drain pan overflow occurs.
Heating System Start-Up
Because your unit has an automatic ignition system, it is easy to start the
heating cycle at the beginning of the heating season. In order for the unitto
operate properly and safely, the furnace needs air for both combustion and
ventilation. Check to make sure that all air openings are unobstructed and
there is adequate clearance around the unit to provide good air flow.
WARNING
Hazardous Voltage w/ Capacitors!
Failure to disconnect power and discharge capacitors before servicing could
result in death or serious injury. Disconnect all electric power, including
remote disconnects and discharge all motor start/run capacitors before
servicing. Follow proper lockout/tagout procedures to ensure the power cannot
be inadvertently energized. Verify with an appropriate voltmeter that all
capacitors have discharged.
-
Set the thermostat’s heating adjustment lever at its lowest setting
-
Move the selector switch to the Off position.
-
Turn off all electric power to the unit.
WARNING
Risk of Burn!
Failure to follow the following instruction could result in serious injury. NEVER attempt to manually light the burner! -
This unit is equipped with an ignition device which automatically lights the burners.
-
Remove the access panel that contains the following label:
Figure 2. Label
REMOVE THIS PANEL
TO GAIN ACCESS TO THE GAS VALVE -
Change the ON/OFF switch to the OFF position.
Note: Some valves require the knob to be pushed in slightly before turning. -
Wait (5) minutes to clear out any gas. If you then smell gas, STOP! Refer to the warnings provided in the “General Information” section. If you do not smell gas, go to the next step.
-
Change the ON/OFF switch to the ON position.
-
Replace panel removed in step 5 above.
-
Turn on all electric power to unit.
-
Set thermostat to desired temperature and move the selector switch to the ON position. The unit will now operate automatically.
-
If the unit will not operate, follow the instructions “To Turn Off Gas To Unit” (under Heating System Shutdown) and call your service technician or gas supplier.
Important: The unit is to be adjusted to obtain an air rise within that
specified on the nameplate.
Heating System Shutdown
To shut down the heating system for brief periods of time simply adjust the
thermostat selector switch to the “Off” position.
NOTICE
Property Damage!
If the unit is shut down during the cold weather months, provisions must be
taken to prevent freeze-up of all water pipes and water receptacles. Whenever
your house or building is to be vacant, arrange to have someone inspect your
structure for proper temperature. This is very important in below freezing
weather. If for any reason your furnace should fail to operate, damage such as
frozen water pipes could result.
How To Turn Off Gas To Unit
-
Set the thermostat to lowest setting.
WARNING
Hazardous Voltage w/ Capacitors!
Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects and discharge all motor start/run capacitors before servicing. Follow proper lockout/Tagout procedures to ensure the power cannot be inadvertently energized. Verify with an appropriate voltmeter that all capacitors have discharged. -
Turn off all electric power to the unit if service is to be performed.
-
Remove the access panel that contains the label shown in Figure 2.
-
Change ON/OFF switch to the “OFF” position.
-
Replace panel removed in step 3 above.
Heating System Maintenance
Complete the following unit inspections and service routines at the beginning
of each heating season.
Refer to the warnings in “General Information” regarding combustible materials
and what to do if you smell gas.
Important: These steps should only be performed by a qualified service
technician.
- Inspect the control panel wiring and heating controls to make sure connections are tight and wiring insulation is intact.
- Turn the unit on and off at the thermostat to be sure the ignition control and spark electrode are operating properly.
- Turn off the gas supply with the unit operating to verify that the gas valves closes and that a re-ignition cycle is initiated by the ignition control.
- Check the operation of the gas ignition system.
- Check the burner manifold pressure. A 1/8 inch pipe plug is provided in the gas valve for this purpose.
- Visually inspect all of the unit’s flue product passage ways for excessive deposit build up and corrosion. If build up or corrosion is apparent, perform the necessary repairs.
- Arrange for a qualified serviceman to inspect the unit every other heating season to maintain safe and efficient operation.
- Visually check the main burner flames. They should be bright blue flames extending into the heat exchange sections.
- Never store anything flammable or combustible around or near the unit.
Condensate Overflow Sensor (Optional)
If installed, the condensate overflow switch will shut down the unit before a
drain pan overflow occurs.
Trane and American Standard create comfortable, energy efficient indoor
environments for commercial and residential applications. For more
information, please visit trane.com or
americanstandardair.com.
Tran and American Standard have a policy of continuous product and product
data improvement and reserve the right to change design and specifications
without notice.
We are committed to using environmentally conscious print practices.
RT-SVU08D-EN 05 Nov 2022
Supersedes RT-SVU08C-EN (May 2020)
References
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