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Installation Operation
Maintenance
High Efficiency Propeller
Fan Gas Unit Heater
GHND
GHPD
July 2007 GHND-SVX01A-EN
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Preface and Warnings and Cautions Literature Change History: GHND-SVX01A-EN (May 2007) Note: One copy of this document ships inside the control panel of each unit and is customer property. It must be retained by the unit’s maintenance personnel. This booklet describes proper installation, operation, and maintenance procedures for the high efficiency propeller fan gas unit heater. By carefully reviewing the information within this manual and following the instructions, the risk of improper op
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Contents Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 General Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Installation . . . . . . . . . .
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Model Number Description Trane products are identified by a multiple character model number that precisely identifies a particular type of unit. An explanation of the alphanumeric model number is shown below. It will enable the owner of Service Engineer to define operation, components and accessories. Model NumberG H N D 010 A D C 10 00 E+ Digit number 1 2 3 4 5,6,7 8 9 10 11 12 13 14 15 DIGIT 1 — Gas heating equipment DIGIT 2 — Unit type B = High efficiency centrifugal fan unit heater c =
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Model Number Description DIGIT 9 — Gas control option A = Single stage, standing pilot D = Single stage, intermittent pilot ignition E = Two stage, intemittent pilot ignition H = Electric model w/ room thermostat, intermittent pilot ignition J = Electric model w/ duct thermostat, intermittent pilot ignition L = Electric model w/ external 4-20 mA input N = Electric model w/ external 0-10 vbc input T = Single stage direct spark ignition DIGIT 10 — Design sequence F = Sixth design Digit 11
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General Information Description The High Efficiency Propeller Fan Gas Unit Heater is a factory assembled, power vented, low static pressure type propeller fan heater designed to be suspended within the space to be heated.THESE HEATERS ARE NOT TO BE CONNECTED TO DUCTWORK. The designs are certified by CSA International as providing a minimum of 80% thermal efficiency, and approved for use in California. Do not alter these units in any way. If you have any questions after reading this manual,
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General Information General Safety Information General Safety Information 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
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General Information General Safety Information this manual. Also follow procedures listed on the “Gas Equipment Start-Up Sheet” located in this manual. Use only the fuel for which the heater is designed (see rating plate). Using LP gas in a heater that requires natural gas, or vice versa, will create the risk of gas leaks, carbon monoxide poisoning and explosion. Note: IMPORTANT! Do not attempt to convert the heater for use with a fuel other than the one intended. Make certain that the pow
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General Information Figure 3. Dimensions standard units 10 High Efficiency Propeller Fan Gas Unit Heater � GHND-SVX01A-EN
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Installation Do not install unit heaters in corrosive or flammable atmospheres! Premature failure of, or severe damage to the unit will result! Note: IMPORTANT! Avoid locations where extreme drafts can affect burner operation. Unit heaters must not be installed in locations where air for combustion would contain chlorinated, halogenated or acidic vapors. If located in such an environment, premature failure of the unit will occur! Since the unit is equipped with an automatic gas ignition s
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Installation MOUNTING HEIGHT: Unit Heaters must be installed at a minimum of 8 feet (2.4m) above the floor, measured to the bottom of the unit. At heights above 8 feet (2.4m), less efficient air distribution will result. Occasionally unit heaters must be mounted at heights of 12 to 16 feet (3.7 to 4.9m) in order to clear obstacles. When this is the case, it is advisable to use centrifugal blower unit heaters. AIRCRAFT HANGARS: Unit Heaters must be installed in aircraft hangars and public
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Installation impede the warm air distribution patterns. Heat throw distances are presented in Table 2, and Figure 2A. Figure 5. Heat throw distances Unit Heater “H” Floor Line Table 2. Standard applications, heat throw distances (approximate) UNIT SIZE "H" 30,000 45,000 60,000 75,000 100,000 125,000 150,000 175,000 200,000 225,000 250,000 300,000 350,000 400,000 8 33333340 60 65 70 75 80 85 90 105 110 120 10 28 28 28 35 54 56 60 64 68 72 78 90 95 100 12 NR NR NR NR 44 46 49 57 61 65 68 80 84 90
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Installation Note: Unit heater sizing should be based on heat loss calculations where the unit heater output equals or exceeds heat loss. Heater output is approximately 80% of input BTU/HR. rating. Clearances: Each Gas Unit Heater shall be located with respect to building construction and other equipment so as to permit access to the Unit Heater. Clearance between walls and the vertical sides of the Unit Heater shall be no less than 18 inches (457mm). A minimum clearance of 6 inches (1
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Installation Figure 6. Heater Mounting Note 3. All hanging hardware and wood is not included with the unit (to be field supplied). Figure 7. Heater mounting 30/400 MBTU Unit Sizes GHND-SVX01A-EN � High Efficiency Propeller Fan Gas Unit Heater 15
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Gas Supply Piping WARNING Flammable Vapors! When connecting to existing gas lines be sure to valve off the gas supply ahead of connection point. To avoid explosion or possible fire, always purge all residual gas from piping before cutting into existing line or removing threaded fittings. Failure to remove all gas vapors could result in death or serious injury or equipment or property-only-damage. Pipe Sizing To provide adequate gas pressure at the gas unit heater, size the gas piping as f
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Gas Supply Piping Gas Pipe Size Table 3. Maximum Capacity of Pipe in Cubic Feet of Gas per Hour (Cubic Meters per Hour) for Gas Pressures of 0.5 psig (3.5 kPa) or Less, and a Pressure Drop of 0.5 Inch Water Column (124.4 Pa)(Based on a 0.60 Specific Gravity Gas) Nominal Length of Pipe, Feet Iron Internal Pipe Size Dia. 10 20 30 40 50 60 70 80 90 100 125 150 175 200 1/2 0.622 175 120 97 82 73 66 61 57 53 50 44 40 37 35 3/4 0.824 360 250 200 170 151 138 125 118 110 103 93 84 77 72 1 1.049
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Gas Supply Piping Pipe Installation Pipe Installation WARNING Hazard of Explosion of Fire! Heater installation for use with propane (LP-gas) must be made by a qualified LP-Gas Dealer or LP-Gas Installer to ensure all appropriate codes, installation procedures, and precautions have been followed. Failure to follow these instructions could result in death or serious injury. 1. Install the gas piping in accordance with applicable local codes. 2. Check gas supply pressure. Each unit heater mus
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Gas Supply Piping Pipe Installation Note: IMPORTANT! Do not overtighten the inlet gas piping into the valve. This may cause stresses that would crack the valve! Note: Use pipe joint sealant resistant to the action of liquefied petroleum gases regardless of gas conducted. Figure 8. Pipe installation, standard controls The appliance and its individual shutoff valve must be disconnected from the gas supply piping system during any pressure testing of that system at test pressures in excess of 1
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Electrical Connections 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. Failure to disconnect power before servicing could result in death or serious injury. WARNING Ground Wire! All field-installed wiring must be completed by qualified personnel. All field-installed wiring must comply with NEC and applicable local codes. Failure to follow
