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Trane Gas Heat Sections for Performance Climate Changer Air Handlers Installation, Operation And Maintenance Manual

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Installation, Operation
and Maintenance
Gas Heat Sections
for Performance Climate Changer™ Air Handlers
Sizes 6-120 for Indoor and Outdoor Units
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.
February 2011
X-39641199010
CLCH-SVX08A-EN

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Summary of Contents for Trane Gas Heat Sections for Performance Climate Changer Air Handlers

  • Page 1 Installation, Operation and Maintenance Gas Heat Sections for Performance Climate Changer™ Air Handlers Sizes 6-120 for Indoor and Outdoor Units 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.
  • Page 2 CFCs such as HCFCs and HFCs. 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. 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.
  • Page 3 Warnings, Cautions and Notices WARNING Proper Field Wiring and Grounding 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.

  • Page 4: Table Of Contents

    Table of Contents Model Number Description ..........6 Overview of Manual .
  • Page 5 Wiring ..............21 High-Voltage Wiring .

  • Page 6: Model Number Description

    Note: The unit serial number and order number is required when ordering parts or requesting service for a Trane air handler. Figure 1. Performance air handler section nameplate CLCH-SVX08A-EN...

  • Page 7: General Information

    General Information Product Information Model and serial numbers for the gas heat section are designated on the nameplate located on the piping-side access door inside the section. Record the information below for a permanent record of the equipment installed on your job site. The nameplate also contains the range of settings for which the gas heat unit is capable.

  • Page 8: Description

    General Information Description The gas heat section consists of a drum-and-tube heat exchanger, burner, gas train components, and a control panel for electrical connections. It is an integral part of the entire air-handling system. An access door is provided for service and maintenance of the burner and gas train components. The gas heat section must be in a blow-thru position downstream from the supply fan.
  • Page 9 General Information Table 2. Vestibule locations Gas Output Vestibule Gas Output Vestibule Gas Output Vestibule Unit Size (MBH) Type Unit Size (MBH) Type Unit Size (MBH) Type 1000 1250 1000 1500 1250 1750 1500 2000 1750 2400 1000 1250 1000 1500 1250 1750...

  • Page 10: Pre-Installation

    Pre-Installation Gas Heat Sections Upon Arrival at Jobsite Gas heat sections arrive at the jobsite with an integral baseframe for the purpose of mounting units to a housekeeping pad or roof curb. The baseframe variables in height from the standard 2.5- inches to 8 inches.

  • Page 11: Receiving Inspection

    Note: Trane warranty does not cover equipment damage due to negligence during storage. Indoor Air Handler Gas Heat Sections For a gas heat section designed for indoor use, Trane recommends indoor storage. If outdoor storage is necessary, select a solid, well-drained area. Concrete or black top surfaces are recommended.

  • Page 12: Installation

    Installation WARNING Improper Unit Lift! Do not lift the unit from top! Lift from lifting lugs only located at bottom of unit. Test lift unit approximately 24 inches to verify proper center of gravity lift point. To avoid dropping of unit, reposition lifting point if unit is not level.

  • Page 13: Electrical And/Or Controls Contractor

    Installation Table 3. Gas supply line connection sizes Gas Output (MBh) 200-560 700-1000 1250-1750 2000-2400 Connection Size (NPT) 1 in. 1 1/4 in. 1 1/2 in. 2 in. • For indoor gas heat sections, install a field-engineered flue stack according to local codes. See Table 4 for flue connection sizes.

  • Page 14: Service Clearance Recommendations

    Installation Service Clearance Recommendations A minimum clearance of the section width plus 12 inches on the access door side of the gas heat section is recommended for routine maintenance. This clearance provides enough room to replace the heat exchanger in the event of failure. The section side panels must be removed to access the heat exchanger.

  • Page 15: Installations At High Altitude

    When specifying gas heaters, the engineer should provide the MBh and airflow required at altitude. All Trane literature is based on nominal outputs at sea level. It is recommended that the services of an experienced, qualified gas heat technician be employed to adjust air-fuel linkages for proper combustion.

  • Page 16: Duct Transitions

    Installation Separated combustion can be a desirable option, but will require more field-installation time and material. The burner fans are not sized to handle any static in the combustion air stream. A booster fan will likely be required to overcome combustion air duct static. Combustion air cannot be ducted directly to the combustion air fan.

  • Page 17: Rain Hood - Combustion Air Inlet

    Installation Airflow from the supply fan should enter on the drum (or primary) side of the heat exchanger (Figure 6) and exit on the tube (or secondary) side (Figure Figure 6. Entering airside (drum or primary) of gas heat Figure 7. Leaving air side (tube or secondary) of gas heat section section...

  • Page 18: Flue Stack Installation

    Installation Flue Stack Installation Outdoor Gas Heat Section The flue stack for outdoor gas heat sections ships inside the gas heat section (see Figure 10). Attach the flue stack to the flue collar and secure it with screws as indicated in Figure 11.

  • Page 19: Piping

    Piping WARNING Hazardous Gases and Flammable Vapors! Exposure to hazardous gases from fuel substances have been shown to cause cancer, birth defects or other reproductive harm. Improper installation, adjustment, alteration, service or use of this product could cause flammable mixtures. To avoid hazardous gases and flammable vapors follow proper installation and set up of this product and all warnings as provided in this manual.

  • Page 20: Heat Exchanger Condensate Piping Recommendations

    Piping • If the gas pressure regulator serves more than one heating unit, it must be sized appropriately to ensure that the inlet gas pressure at each unit is 7 to 14 inches wc while all burners are firing. Nine inches wc is required for 1250 to 2000 10:1 turndown heaters. Gas pressure must not exceed 14 inches wc when all units are off.

  • Page 21: Wiring

    Wiring WARNING Proper Field Wiring and Grounding 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.

  • Page 22: Gas Heaters With 200-1000 Mbh Output

    Wiring Table 8. Power supply requirements 3:1 and 10:1 Burner Turndown Units Gas Output (MBh) 200-1000 1250-2000 2000 Voltage/Ph 115-575/1 208-575/3 208/230/460/575/3 Minimum Circuit Ampacity (MCA) less than 15 less than 15 19.71/17.9/9.0/7.2 Maximum Overcurrent Protection (MOP) 25/25/15/15 All except the 2000 MBh output, 208 volt, 3 phase unit. This unit will have a marked MCA of 16.1 Note: All except the 2000 MBh output, 208 and 230 volt, 3 phase units.
  • Page 23 Wiring Figure 13. 200-1000 MBh 3:1 or 10:1 turndown wiring diagram CLCH-SVX08A-EN...
  • Page 24 Wiring Figure 14. 1250-2000 MBh 3:1 or 10:1 turndown wiring diagram CLCH-SVX08A-EN...
  • Page 25 Wiring Figure 15. 1250-2400 MBh 20:1 turndown wiring diagram CLCH-SVX08A-EN...

  • Page 26: Operation

    Operation WARNING Hazardous Gases and Flammable Vapors! Exposure to hazardous gases from fuel substances have been shown to cause cancer, birth defects or other reproductive harm. Improper installation, adjustment, alteration, service or use of this product could cause flammable mixtures. To avoid hazardous gases and flammable vapors follow proper installation and set up of this product and all warnings as provided in this manual.

  • Page 27: Startup

    Operation 7. Remove any debris from combustion air inlets and/or hoods. Note that some combustion air inlets are located on the floor panel of the piping vestibule. Insure the openings are not blocked. 8. For units with burners size 1250 and larger, ensure exhaust fan rotation is correct. Figure 16.
  • Page 28 Operation 5. Measure the gas pressure at the manual gas valve. The inlet gas pressure should not exceed 14 inches wg. Adjust the gas pressure, if necessary. 6. Open the first manual gas valve in the burner vestibule. 7. Open the manual gas valve in the pilot gas line and bleed the air from the line. 8.
  • Page 29 Operation Table 9. Signal strengths Signal Strength Ultra-Violet Sensor Good 5.0–11.0 Vdc Marginal 1.7–5.0 Vdc Inadequate 0.0–1.7 Vdc Pre-Purge and Main Flame Ignition (20:1 Turndown, 1250-2400 MBh) With the manual gas cocks closed move the manual disconnect switch in the heater vestibule to the ON position.

  • Page 30: Final Check Out

    Operation Final Check Out 1. Check the gas pressure at the burner manifold. It should be the same pressure that is indicated on the Manifold Pressure at Max. Input nameplate at full fire. Refer to the Power Flame burner nameplate for this value. 2.

  • Page 31: Normal Shutdown

    6. The gas-valve actuator slowly modulates open or closed in response to the heat load required in the building. 7. Complete the start-up checklist and send a copy as directed to Trane to validate the warranty. Normal Shutdown When the system no longer requires heat, the temperature control system opens the heat start contacts.

  • Page 32: Routine Maintenance

    Routine Maintenance WARNING Hazardous Gases and Flammable Vapors! Exposure to hazardous gases from fuel substances have been shown to cause cancer, birth defects or other reproductive harm. Improper installation, adjustment, alteration, service or use of this product could cause flammable mixtures. To avoid hazardous gases and flammable vapors follow proper installation and set up of this product and all warnings as provided in this manual.

  • Page 33: Troubleshooting

    Troubleshooting WARNING Hazardous Service Procedures! The maintenance and troubleshooting procedures recommended in this section of the manual could result in exposure to electrical, mechanical or other potential safety hazards. Always refer to the safety warnings provided throughout this manual concerning these procedures. When possible, disconnect all electrical power including remote disconnect and discharge all energy storing devices such as capacitors before servicing.
  • Page 34 Troubleshooting Table 12. Troubleshooting gas heat sections Symptom Probable Cause Recommended Action • Check the fuse/breaker panel and reset or replace the device. Loss of power, fuse blown, or circuit breaker tripped • Check the fuses if provided, in gas heat control panel and replace as needed. Open the gas valve.
  • Page 35 Notes CLCH-SVX08A-EN...
  • Page 36 HVAC systems, comprehensive building services, and parts. For more information, visit www.Trane.com. Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice. © 2011 Trane All rights reserved...

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