Installation, Operation, and Maintenance Tubular Indoor Gas Fired Duct Furnace Model Number GUNE J30-09453 SAFETY WARNING Only qualified personnel should install and service the equipment. The installation, starting up, and servicing of heating, ventilating, and airconditioning 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.
Introduction Read this manual thoroughly before operating or servicing this unit. Warnings, Cautions, and Notices 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. WARNING Personal Protective Equipment (PPE) Required! Installing/servicing this unit could result in exposure to electrical, mechanical and chemical hazards.
Introduction WARNING Safety Alert! You MUST follow all instructions below. Failure to do so could result in death or serious injury. damage and immediately file claim for damage with the transportation company. General Safety Information WARNING For Your Safety The use and storage of gasoline or other flammable vapors and liquids in open containers in the vicinity of this appliance is hazardous. If you smell gas: Safety Alert! You MUST follow all instructions below.
Introduction • • • Follow installation instructions CAREFULLY to avoid creating unsafe conditions. All wiring should be done and checked by a qualified electrician, using copper wire only. All external wiring must conform to applicable local codes, and to the latest edition of the National Electric Code ANSI/NFPA No. 70. All gas connections should be made and leak-tested by a suitable qualified individual, per instructions in this manual. Also follow procedures listed in “Gas Equipment Start-Up,” p. 30.
Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Warnings, Cautions, and Notices . . . . . . . . 2 Shut Down . . . . . . . . . . . . . . . . . . . . . . . . .27 General Safety Information . . . . . . . . . . . . . 3 Tubular Duct Furnace—High Altitude Deration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29 Copyright . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Gas Input Rate . . . . . . . . . . . . . . . . . . . . . .
Model Number Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 G U N E 0 2 0 A H A 1 0 0 0 0 B Digit 1 — Gas Heating Equipment G = Gas Heating Equipment Digit 2 — Product Type U = Tubular Duct Furnace Digit 15 — Miscellaneous 0 B = = G = W = None Air Pressure Switch for Above 5,000 Feet Horizontal and Vertical Louvers Stainless Steel Drain Pan Digit 3 — Fuel Type N P = = Natural Gas Propane Gas (LP) Digit 4 — Developmental Sequence E = Current Developmental Se
General Information Important: It is the equipment owners responsibility to provide any scaffolding or other apparatus required to perform emergency service or annual/periodic maintenance to this equipment The Tubular Indoor Gas-Fired Duct Furnace is a factory assembled, power vented, and low static pressure type duct furnace with a low profile cabinet. The duct furnace can also be easily field converted to separated combustion.
Dimensional Data and Weights Table 1. Dimensional data and weights—tubular duct furnace dimensions, inches (mm) Unit Capacity 100 “A” Overall Unit Height “B” Height to Centerline Flue “C” Height to Gas Connection “D” Opening Height, Front & Rear “E” Overall Unit Depth “F” Flue Size Diameter 150 200 250 300 350 400 10.3 13.7 17 20.2 23.5 26.7 30 (262) (348) (432) (513) (597) (678) (762) 7.6 10.5 11.9 6.8 8.4 10 11.6 (193) (267) (302) (173) (213) (254) (295) 2.5 3.
Performance Data Table 2. Tubular duct furnace performance data Input Unit Size 100 150 200 250 300 350 400 (Max) MBh (Min) MBh Output (kW) (kW) MBh (kW) Min CFM (m3/s) Temp rise P.D. in. wc °F (°C) (kPa) Max CFM (m3/s) Temp rise P.D. in. wc °F (°C) (kPa) 100 50 82 758 100 0.07 2528 30 0.65 (29.3) (14.6) (24.0) (0.357) (56) (0.017) (1.193) (17) (0.16) 150 75 123 1137 100 0.03 3792 30 0.44 (43.9) (21.9) (36.0) (0.536) (56) (0.007) (1.789) (17) (0.
Installation Locating Units NOTICE: Equipment Damage! when coming in contact with the flames. This will greatly reduce the life of the gas duct furnace and may void the warranty. Avoid such areas.
Installation Ductwork Properly designed and installed ductwork, providing a uniformly distributed flow of air across all surfaces of the heat exchanger, is essential to satisfactory unit performance and life of the equipment. bypass around the gas duct furnace to bypass a portion of the air. Figure 5. Recommended ductwork design for straightthrough arrangement Figure 6. Recommended ductwork design for elbowed arrangement All duct connection flanges/seams must be sealed to prevent air leaks.
Installation Suspension Figure 7. Typical suspension 3/8" THREADED SUSPENSION ROD & JAM NUT BY INSTALLER A AI R FL OW OUTSIDE JACKET PANEL (UNIT) A ← SECTION A-A SCALE 1:1 D9376 Conversion of access side WARNING Heavy Object! Make certain that the lifting methods used to lift the duct furnace are capable of supporting the weight of the heater during installation. See Table 1, p. 8 for unit weights.
Installation Gas Pipe Sizing WARNING Before any connection is made to the existing line supplying other gas appliances, contact the local gas company to make sure that the existing line is of adequate size to handle the combined load. Fire Hazard! Do not connect gas piping to this unit until a supply line pressure/leak test has been completed.
Installation Table 4. Gas pipe size(a) Nominal Iron Internal 10 Pipe Diameter Size (in) (in) (3.0) 1/2 0.622 3/4 0.824 1 1.049 1-1/4 1.380 1-1/2 1.610 2 2.067 2-1/2 2.469 3 3.068 4 4.026 Length of Pipe, feet (meters) 20 (6.1) 30 40 50 60 70 80 90 100 125 150 175 200 (9.1) (12.2) (15.2) (18.3) (21.3) (24.4) (27.4) (30.5) (38.1) (45.7) (53.3) (61.0) 175 120 97 82 73 66 61 57 53 50 44 40 37 35 (4.96) (3.40) (2.75) (2.32) (2.07) (1.87) (1.73) (1.61) (1.
Installation WARNING Hazard of Explosion! Failure to follow proper safe leak test procedures could result in death or serious injury or equipment or property-only-damage. NEVER use an open flame to detect gas leaks. You MUST use a leak test solution for leak testing. NOTICE: Valve Damage! Do not over tighten the inlet gas piping into the valve. This may cause stresses that will crack the valve! Important: Figure 8.
Installation Venting Note: All vertical and horizontal venting arrangements for Tubular Duct Furnaces are Category III venting. ANSI now organizes vented appliances into four categories. Table 6. Venting categories Non-Condensing Condensing Negative Vent Pressure I II Positive Vent Pressure III IV Category I. Includes non-condensing appliances with negative vent pressure, like the traditional atmospheric unit heater. Category II. Groups condensing appliances with negative vent pressure.
Installation Table 7. Vent systems termination clearance requirements Minimum Clearance for Termination Locations Structure/Object USA CANADA Door, window, or gravity vent inlet; combustion air inlet for other appliances 9 in. for 10,000 to 50,000 Btu/h input; 12 inches for input exceeding 50,000 Btu/h 9 inches (230mm) for 10,000 to 50,000 Btu/h input; 12 inches (305mm) for input exceeding 50,000 Btu/h Forced air inlet within 10 feet 3 feet above 6 feet (1.
Installation pipe conforming with UL S636, local building codes, or in the absence of local building codes, with current CSA-B149.1 Installation Codes for Natural Gas Burning Appliances and Equipment, or CSA-B149.2 Installation Codes for Propane Gas Burning Appliances and Equipment. 11. Each unit must have an individual vent pipe and vent terminal! Each unit MUST NOT be connected to other vent systems or to a chimney.
Installation Figure 9. Vertically vented Category III, standard combustion Approved Vent Terminal 2 ft Min. (0.61 m Min) Use Insulated Stack Outdoors Thimble Roof 5 ft. Min. (1.52 m Min.) 6" (152 mm) Min. Distance from pipe to ceiling 1/4" per foot Min. Slope (21 mm/m) 10 ft. Max. (3.05 m) (Not to Exceed 75% Vertical Flue Height) D9379B Figure 10. Horizontally vented Category III, standard combustion 5 ft (1.52 m) Min 1 FT. Min (305 mm) 1/4" per foot Min.
Installation Combustion Air Notes: • • • Combustion and exhaust venting instructions below describe two-pipe venting of a duct furnace configured for separated combustion. If converting the duct furnace to separated combustion, use the air inlet conversion kit that shipped loose with the unit.
Installation Figure 11. Access panel seal WARNING Proper Vent Pipe Required! TOP Never use a pipe of a diameter other than that specified in Table 1, p. 8! Never use PVC or other non-metallic pipe for venting! Failure to follow instructions could result in death, serious injury, and property damage. 28.125 SIDE SIDE BOTTOM Exhaust Venting WARNING Carbon Monoxide Poisoning! Never operate separated combustion duct furnaces without combustion air and flue gas piping in place.
Installation Figure 12. Vertical inlet/vent locations, separated combustion 10 ft. (3.04m) Min. to Wall or Adjoining Building Breidert Type L or Fields Approved Terminal Combustion Air Inlet 12 in. Min. (305 mm) Exhaust Vent 2 ft. (.609m) Min Plus Max Snow Depth for Area 3 ft. (1m) Min Plus Max Snow Depth Roof Flashing Exhaust → Combustion Air → Tee with Drip Leg and Cleanout Cap 2 ft. (.609m) Min. 18 in. (457mm) Min @ CL D9380 Figure 13.
Installation Figure 14. Vertical arrangement, single wall vent system to single wall termination Figure 15.
Installation Figure 16. Vertical arrangement, single wall vent system to double wall termination Figure 17.
Electrical Connections WARNING Hazardous Voltage! Figure 18. Low-voltage thermostat wiring, single-stage Failure to disconnect power before servicing could result in death or serious injury. Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized. Standard units are shipped for use on 115-volt, 60-hertz, single phase electric power.
Electrical Connections Figure 21. 26 Tubular duct furnaces equipped with natural gas or propane (LP) gas, single-stage Figure 22.
Operation Tubular Duct Furnace Direct Spark Ignition Start-Up Explanation of Controls WARNING Hazard of Explosion! 1. The duct furnace is equipped with a power vent system that consists of a power vent motor and blower, pressure switch, and sealed flue collector in place of a conventional gravity vent draft diverter. WARNING Risk of Fire and Carbon Monoxide Poisoning! The pressure switch MUST NOT be bypassed. The unit MUST NOT be fired unless the power venter is operating.
Operation Figure 23. Direct spark ignition system, tubular duct furnace Adjusting Gas Pressure Natural Gas. Best results are obtained when the duct furnace is operating at its full rated input with the manifold pressure of 3.5 inches wc (0.9 kPa). Adjustment of the pressure regulator is not normally necessary since it is preset at the factory. However, field adjustment may be made as follows: BURNER BRACKET ORIFICE FLAME SENSOR 1.
Operation Tubular Duct Furnace—High Altitude Deration All unit deration must be done through field adjustments by a qualified technician. Once the proper adjustments are made in the field, attach label #J17-06459 to the unit, and record adjusted manifold pressure, altitude of the unit installation, the technician’s name, and the date on the label using a permanent marker.
Gas Equipment Start-Up Customer Job Name & Number Pre-inspection information (with power and gas off) Type of Equipment: Duct Furnace Serial Number: Type of Gas (Natural or LP) Tank Capacity Name Plate Voltage: Rating Name Plate Amperage ____lb ____kg ____Btu@ ____°F ____kW@ ____°C Model Number Table 12.
Maintenance Periodic Service safety clearance requirements listed in Table 3, p. 10. WARNING WARNING Hazardous Voltage and Gas! Failure to turn off gas or disconnect power before servicing could result in an explosion or electrocution which could result in death or serious injury. Turn off the gas supply and disconnect all electric power, including remote disconnects, before servicing the unit. Follow proper lockout/tagout procedures to ensure the power can not be inadvertently energized.
Maintenance Identification of Parts Tubular Duct Furnace b. Average Duty—Annually after 3 years or 8,000 hours of operation. c. Heavy Duty—Annually after 1 year or at least 1,500 hours of operation. 12. Check and test the operational functions of all safety devices supplied with your unit. Figure 24. Tubular duct furnace, exploded view AI R 25 23 FL OW 27 ← 30 12 21 13 10 14 4 24 1 3 2 5 26 6 9 31 7 17 11 8 16 28 20 22 15 19 D9373 29 18 Table 13.
Maintenance How To Order Replacement Parts Please send the following information to your local representative: if further assistance is needed, contact the manufacturer’s customer service department. • Unit number • Serial number • Part description and number as shown in Figure 24/Table 13, p.
Troubleshooting 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.
Troubleshooting Table 14. Tubular duct furnace troubleshooting guide Symptoms Possible Cause(s) Gas leak. Shut off gas supply immediately! Failure to ignite. No power supply to the unit. Turn on power supply, check fuses and replace if bad. Thermostat not calling. Turn up thermostat. Check for 24 V on terminals R and W1 on terminal strip. Defective high limit switch. Check switch for continuity if open with no heat present; replace. Defective air pressure switch.
Troubleshooting Table 14. Tubular duct furnace troubleshooting guide Symptoms Too much heat. Cold air is delivered during heater operation. High limit is tripping. Power ventor will not run. Power venter turns on and off during operation. Power venter will not stop. Noisy power venter. 36 Possible Cause(s) Corrective Action Unit is over fired. Refer to “Gas Input Rate,” p. 28. Check orifice size. Replace if too large. Thermostat malfunction.
Troubleshooting 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 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. No cycling or appliance power or thermostat call for heat since appliance failure has occurred: 1.
Warranty The “Manufacturer” warrants to the original owner at original installation site that the above model Gas-Fired Heater (“the Product”) will be free from defects in material or workmanship for (1) year from the date of shipment from the factory, or one and one-half (1-1/2) years from the date of manufacture, whichever occurs first.
Trane optimizes the performance of homes and buildings around the world. A business of Ingersoll Rand, the leader in creating and sustaining safe, comfortable and energy efficient environments, Trane offers a broad portfolio of advanced controls and 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.
