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Summary of Contents for Trane GHND-SVX01A-EN
- Page 1 Installation Operation Maintenance High Efficiency Propeller Fan Gas Unit Heater GHND GHPD July 2007 GHND-SVX01A-EN...
- Page 2 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.
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Page 3: Table Of Contents
Gas Equipment Start-Up GHND-SVX01A-EN ......... 4 . -
Page 4: Model Number Description
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. -
Page 5: Model Number Description
= # 409 stainless steel draft diverter = Summer-Winter switch = Horizontal louvers = Horizontal and vertical louvers = Side access burner drawer = Fan time delay control GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Model Number Description... -
Page 6: General Information
Figure 1. Front view, High Efficiency Propeller Fan Gas Unit Heater Figure 2. Rear view, High Efficiency Propeller Fan Gas Unit Heaters GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... -
Page 7: General Safety Information
Canadian Electric Code, Part 1 CSA Standard C22.1. All wiring should be done and checked by a qualified electrician, using copper wire only. All gas connections should be made and leak-tested by a suitably qualified individual, per instructions in GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater General Information... - Page 8 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. General Safety Information High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 9 Note 1. 2,000 ft. (610m), the unit input must be derated 4% for each 1,000 ft. (305m) above sea level; refer to local codes, GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 75,000 100,000 125,000 150,000 175,000 200,000 225,000 250,000 300,000 350,000 400,000...
- Page 10 General Information Figure 3. Dimensions standard units High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
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Page 11: Installation
Note: Location of unit heaters is related directly to the selection of sizes. Basic rules are as follows Figure 4. Heater location GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... - Page 12 Satisfactory results can also be obtained where multiple heaters are located toward the center of the area with heated air directed toward the outside walls. Be careful to avoid all obstacles and obstructions which could High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 13 A permanent opening or openings having a total free area of not less than one square inch per 5,000 BTU/HR. (1.5 Kw) of total input rating of all appliances within the space shall be provided. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Unit Heater “H”...
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Page 14: Clearances
Insure that all hardware used in the suspension of each unit heater is more than adequate for the job. Refer to figures 1-5 and dimensional data per table 1 for suspension of units. Make certain that the lifting methods used to lift the heater and High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN... - Page 15 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 Installation...
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Page 16: Gas Supply Piping
Cu ft/hr = Input Btu per Cu ft 200,000 Btu/hr = 200 Cu ft/hr 1,000 Btu/cu ft GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... - Page 17 FOR NATURAL GAS: Select the pipe size directly from the table. Notes: FOR PROPANE GAS: Multiply the Cu. Ft. / Hr. (Cubic Meters per Hour) value by 0.633; then use the table. Notes: GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Length of Pipe, Feet 1900 1680...
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Page 18: Pipe Installation
Failure to follow recommended safe leak test procedures could result in death or serious injury or equipment or property-only-damage. 8. Make certain that all connections have been adequately doped and tightened. High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Pipe Installation... - Page 19 Supply Inlet Pressure **For two stage applications only at normal altitudes; two stage applications do not apply to the 30/75 Notes: MBH models. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Natural Gas Propane (LP) Gas 3.5 in. W.C.
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Page 20: Electrical Connections
2. Hot areas - Areas where the sun's rays, radiation, or warm air currents may affect control operation. 3. Dead areas - Areas where air cannot circulate freely, such as behind doors or in corners. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... - Page 21 105° C. Should any high limit switch wires have to be replaced, they must be replaced with wiring material having a temperature rating of 200°C minimum. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 25 ft. (7.6m) 50 ft. (15.2m)
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Page 22: Venting For Power Vented Unit Heaters
Adjoining building or parapet Adjacent public walkways Vent Systems - Termination Clearance Requirements Minimum Clearances for Termination Structure GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Locations 4 feet below 4 feet horizontally 1 foot above 3 feet above... - Page 23 Figure 10. Horizontal left vent position, (rear view of unit heater) Figure 11. Horizontal right vent position, (rear view of unit heater) GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Venting for Power Vented Unit Heaters R educer/Increas er...
- Page 24 Horizontal Venting: Units are shipped from the factory set up for vertical venting. T o V ertical F lue V ent T ermination R educer/Increas er Where Applicable AIR FLOW P ower V enter High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 25 Move box, using holes provided. Move 7/8" plug from bottom of box to side. Reconnect all wires according to the unit's wiring diagram. Figure 13. Adaptor installation GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Venting for Power Vented Unit Heaters...
- Page 26 Venting for Power Vented Unit Heaters Figure 14. Horizontal arrangement, single wall High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 27 Venting for Power Vented Unit Heaters Figure 16. Horizontal arrangement, single wall vent system to double wall termination Figure 17. Vertical arrangement, single wall vent system to double wall termination GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater...
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Page 28: Operation
It must be mounted on a vibration free, vertical surface away from air currents, in accordance with the instructions furnished with the thermostat (also refer to Electrical Section). GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... -
Page 30: Burner Components
11 High Limit, this safety device is located on the rear header plate of the heat exchanger (air inlet side). 12 Blocked Vent (Spill) Switch, this safety device is located in the upper right corner of the right jacket panel. High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Burner Components... - Page 31 3. The adjusted manifold pressure should not vary more than 10% from the pressure specified in the Main burner orifice schedule table. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Never overfire the unit heater, as this may cause unsatisfactory Time (Sec.)
- Page 32 ORIFICE DRILL FT 3/HR ORIFICE DRILL FT 3/HR ORIFICE DRILL FT 3/HR ORIFICE DRILL FT 3/HR ORIFICE DRILL High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Propane 2500 BTU/Ft3 (93.1 MJ/m3) Number of 10" W.C. Burner (2.49 kPA) Orifices...
- Page 33 The adjusted manifold pressure should not vary more than 10% from the pressures specified in Table 5. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater For correct air adjustment, close the air shutter until yellow tips...
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Page 34: Maintenance
2. Turn off the manual gas valve and electrical power to the gas unit heater. Gas tightness of the safety shut-off valves must be checked on GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... - Page 35 Do not mix greases with different bases within the bearing. Mixing grease within the bearing may result in premature bearing failure. 13. Check and test the operational functions of all safety devices supplied with your unit. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Maintenance...
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Page 36: Trouble Shooting
2. Noisy pilot. 3. Irregular orifice causing whistle or resonance. 4. Excessive gas input. CORRECTIVE ACTION • Close air shutter. • Reduce pilot gas. Refer to “Operation” . • Replace orifice. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... - Page 37 Clean combustion air inlet openings in bottom panel, see “Installation” . • Clean heat exchanger. • Determine cause and repairaccordingly. F. Gas Odor. POSSIBLE CAUSE(S) 1. Shut off gas supply immediately! 2. Blocked heat exchanger/venting. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Trouble Shooting...
- Page 38 Main gas off. 2. Lack of power at unit. 3. Thermostat not calling for heat. 4. Defective limit switch. 5. Improper thermostat or transformer wiring at gas valve. 6. Defective gas valve. High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 39 4. Short circuit. 5. Defective or sticking gas valve. 6. Excessive gas supply pressure. CORRECTIVE ACTION • Relocate thermostat away from drafts. • Replace thermostat. • Check wiring per diagrams. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Trouble Shooting...
- Page 40 Check for proper air supply across heat exchanger. • Jumper limit switch terminals 1 and 2. If burner operates normally, replace switch. M. Noisy. POSSIBLE CAUSE(S) Fan blades loose. 2. Fan blades dirty. High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 41 Trouble Shooting GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater...
- Page 42 3. Defective fan switch. CORRECTIVE ACTION • Check all wiring. • Refer to H or N symptoms. • Replace fan switch. R. Not enough heat. POSSIBLE CAUSE(S) Incorrect gas input. 2. Heater undersized. High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 43 3. Air through put too high. CORRECTIVE ACTION • Refer to “Operation” . • Check motor voltage with fan running. Should be 115 volts AC. • Refer to “Operation” . GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Trouble Shooting...
- Page 44 3. Check sensor/spark lead for continuity. 4. Measure 24 volts from term. MV to term. MV/PV. CORRECTIVE ACTION • Check connections-term. MV feeds main valve. • Replace pilot assembly. • Replace if needed. High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 45 Check and tighten all wiring connections per diagrams. Thermostat wires tagged "W" and "G" must be connected together (unless special thermostats are used; if so, see thermostat wiring diagram). See electrical connections. • Replace motor. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Trouble Shooting...
- Page 46 2. Main burners not lighting while thermostat calls for heat. 3. Defective venter relay. CORRECTIVE ACTION • Check all wiring. • Refer to H & N symptoms. • Replace venter relay. High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
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Page 47: Part Identification
Part Identification Figure 20. Propeller parts: 115/1/60 motor fan guard fan blade hardware Fan Blade Fan Guard Motor Hardware Hardware D4430 Figure 21. Component parts, bottom view GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... - Page 48 Part Identification Figure 22. Internal furnace components Figure 23. Burner assembly parts High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 49 100/175 units: 4" dia. flue outlet Reducer required – To be supplied by installer. 200/250 units: 5" dia. flue outlet (no adapter required). 300/400 units: 6" dia. flue outlet Increaser required – To be supplied by manufacturer. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Part Identification...
- Page 50 Keps Nut w/External Tooth Lockwasher (4 required) Motor Support Shipping Bracket Phillips Head Screws (3 required) Power Venter Blower Housing Blower Wheel Motor Space Washers (3 required) Machine Screw (3 required) Sensing Tube Set Screw High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN...
- Page 51 Switch Mounting Brackets will also disengage. 8. Reverse Order to install the new Power Venter Motor. 9. TEST FIRE THE UNIT FOR A FEW CYCLES, MAKING SURETHAT THE UNIT IS OPERATING SATISFACTORY. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Part Identification...
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Page 52: Gas Equipment Start-Up
Tighten all electrical terminals and connections. Check damper linkages for tightness. Check all fans & blowers for free movement. Check all controls for proper settings. Check all set screws on blowers and bearings. Check belt tightness. GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater... - Page 53 Entering air temp. _____ °F or ____ °C Discharge air temp. (high fire) ____ °F . or ____ °C External static pressure _________ in. W.C. Cycle by thermostat or operating control. Remarks: GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Gas Equipment Start-Up...
- Page 56 For more information, contact your local Trane office or e-mail us at comfort@trane.com Literature Order Number GHND-SVX01A-EN Date 07/07 Supersedes GHND-IOM-1A (04/1992) Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.
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