Page 2 - Preface and Warnings and Cautions; Literature Change History:
Preface and Warnings and Cautions © 2007 American Standard Inc. All rights reserved GHND-SVX01A-EN Literature Change History: GHND-SVX01A-EN (May 20 07) 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...
Page 3 - Contents
GHND-SVX01A-EN 3 Model Number Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Description . . . . . . . . . . . . . . . . . . . . . . . ...
Page 4 - Model Number Description
4 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 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 def...
Page 6 - Description; General Information; Front view, High Efficiency Propeller Fan Gas Unit Heater
6 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 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 CONNEC...
Page 7 - WARNING; WARNING; General Safety Information
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 7 General 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 p...
Page 10 - Dimensions standard units
10 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN General Information Figure 3. Dimensions standard units
Page 11 - Installation; Heater location
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 11 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 no...
Page 13 - The Unit Heater shall be installed in a location in which; Heat throw distances
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 13 Installation impede the warm air distribution patterns. Heat throw distances are presented in Table 2, and Figure 2A. Note 2. NR=Not recommended H=Distance from floor to bottomof the unit. Unit heaters should not be installed to maint...
Page 15 - Heater Mounting
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 15 Installation Note 3. All hanging hardware and wood is not included with the unit (to be field supplied). Figure 6. Heater Mounting Figure 7. Heater mounting 30/400 MBTU Unit Sizes
Page 16 - Pipe Sizing; Gas Supply Piping
16 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 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...
Page 17 - Gas Pipe Size
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 17 Gas Supply Piping Notes: Determine the required Cu. Ft. / Hr. by dividing the rated heater input by 1000. For SI / Metric measurements: Convert unit Btu. / Hr. to kilowatts. Multiply the units input (kW) by 0.0965 to determine Cubic M...
Page 18 - Pipe Installation
18 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Gas Supply Piping 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 pro...
Page 19 - Pipe installation, standard controls
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 19 Gas Supply Piping 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 regardles...
Page 20 - Thermostat Wiring and Location; Electrical Connections
20 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 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 befor...
Page 21 - THERMOSTAT HEAT ANTICIPATOR ADJUSTMENTS:; FAN TIME DELAY CONTROL; Thermostat Wiring; Thermostat wiring and location
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 21 Electrical Connections Thermostat wires tagged “W” and “G” must be connected together except when using a general purpose "SPDT" 24VAC relay and a standard thermostat with subbase, or when using low voltage thermostats. Also r...
Page 22 - Carbon Monoxide Poisoning!; All unit heaters must be vented!; terminate external; Venting for Power Vented Unit Heaters
22 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater WARNING! Carbon Monoxide Poisoning! Each unit must have an individual vent pipe and vent terminal per furnace section! Each unit MUST NOT be connected to other vent systems or to a chimney. Failure to follow this instruction could res...
Page 23 - An elbow should never be attached directly to the venter!
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 23 Venting for Power Vented Unit Heaters The venting system for these appliances shall terminate at least four feet (1.2m) below, four feet (1.2m) horizontal from, or one foot (0.3m) above any door, window, or gravity air inlet into any ...
Page 24 - CAUTION
24 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Venting for Power Vented Unit Heaters Use single wall pipe constructed of 26 gauge galvanized steel or material of equivalent durability and corrosion resistance for the vent system. For installation in Canada, use pipe constructed fr...
Page 25 - Figure 13. Adaptor installation
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 25 Venting for Power Vented Unit Heaters To convert the power venter for horizontal venting, remove the shipping support bracket; refer to Figures 6 through 10 and 24, and follow this procedure: 1. Hold power venter motor in position. 2....
Page 26 - Figure 14. Horizontal arrangement, single wall
26 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Venting for Power Vented Unit Heaters Figure 14. Horizontal arrangement, single wall
Page 28 - POWER VENTED PROPELLER UNITS INTERMITTENT (SPARK) PILOT IGNITION; Operation
28 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater POWER VENTED PROPELLER UNITS INTERMITTENT (SPARK) PILOT IGNITION EXPLANATION OF CONTROLS: 1. The unit heater is equipped with a power venter system consisting of a power venter motor and blower, pressure switch, and sealed flue collec...
Page 30 - Figure 18. Burner components
30 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Operation Figure 18. Burner components BURNER DRAWER COMMON PARTS CONTROLS: 1 Main Burners 8. Main Gas Valve (Honeywell) 2 Burner Manifold 8B. Main Gas Valve (White Rodgers) 3 Air Shutters 9 Ignitor 4 Burner Springs 10 Pilot Burner 5 ...
Page 31 - GAS INPUT RATE; Gas Pressure Adjustments; Gas Input Rate
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 31 Operation GAS INPUT RATE Check the gas input rate as follows (Refer to general safety section for metric conversions/SI units): Note: IMPORTANT! Never overfire the unit heater, as this may cause unsatisfactory operation or shorten the...
Page 32 - Main burner orifice schedule
32 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Operation Notes: This schedule is for units operating at normal altitudes of 2000 ft. (610m) or less. SPECIAL ORIFICES ARE REQUIRED FOR INSTALLATIONS ABOVE 2,000 FT. (610M). Notes: When installed in Canada, any references to deration ...
Page 33 - PRIMARY AIR SHUTTER ADJUSTMENT; MANIFOLD PRESSURE ADJUSTMENT; Figure 19. Main burner flames
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 33 Operation PRIMARY AIR SHUTTER ADJUSTMENT After the unit has been operating for at least 15 minutes, adjust the primary air flow to the burners. Turn the friction-locked, manually-rotated air shutters clockwise to close, or countercloc...
Page 34 - Periodic Service; Hazardous Voltage and Gas!; Maintenance
34 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 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 s...
Page 36 - Trouble Shooting Guide:; Trouble Shooting
36 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Trouble Shooting Guide: A. Flame lifting from burner ports. POSSIBLE CAUSE(S) 1. Pressure regulator set too high. 2. Defective Regulator. 3. Burner orifice too large. CORRECTIVE ACTION • Reset manifold pressure. Refer to "Operatio...
Page 37 - Shut off gas supply immediately!
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 37 Trouble Shooting • Reset manifold pressure. Refer to “Operation”; Replace regulator section of combination gas valve or complete valve; or Check with local gas supplier for proper orifice size and replace. Refer to “Operation”. D. Yel...
Page 38 - Inspect all gas piping and repair.
38 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Trouble Shooting 3. Drafts around heater. 4. Negative pressure in building. 5. Blocked flue collector. CORRECTIVE ACTION • Inspect all gas piping and repair. • Clean heat exchanger/flue. • Eliminate drafts. Refer to “Installation”. • ...
Page 42 - P. Fan motor turns on and off while burner is operating.
42 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Trouble Shooting CORRECTIVE ACTION • 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). Se...
Page 43 - V. Cold air is delivered during heater operation.
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 43 Trouble Shooting 3. Thermostat malfunction. 4. Heater cycling on limit control. CORRECTIVE ACTION • Refer to “Operation”. • This is especially true when the heated space is enlarged. Have the heat loss calculated and compare to the he...
Page 44 - X. Spark present but pilot does not light.
44 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Trouble Shooting W. No Spark. POSSIBLE CAUSE(S) 1. Thermostat not calling for heat. 2. No low voltage. 3. Spark gap closed or too wide. 4. Broken or cracked ceramic on spark electrode. CORRECTIVE ACTION • Close thermostat contacts. • ...
Page 46 - CC. Power venter motor turns on and off while burner is operating.
46 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Trouble Shooting • Check for 24V across 1 and 3 terminals on fan relay. If 24V is present, jumper terminals numbered 2 and 4. If motor runs, the relay is defective and must be replaced.If 24V is not present, check wiring per diagrams....
Page 47 - Part Identification
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 47 Part Identification Figure 20. Propeller parts: 115/1/60 motor fan guard fan blade hardware Figure 21. Component parts, bottom view D4430 F a n G u a r d F a n B l a d e Hardware Hardware Motor
Page 48 - Figure 22. Internal furnace components
48 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Part Identification Figure 22. Internal furnace components Figure 23. Burner assembly parts
Page 49 - Figure 24. Power vent assembly
GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater 49 Part Identification Note 1. For item No. 6, use counter-clockwise rotation. Note 2. DO NOT OVERTIGHTEN CELCON NUT! HAND TIGHTEN ONLY! DO NOT USE TOOLS! Approximate 1/3 turn maximum or 8 inch pounds is sufficient from the point where t...
Page 50 - Figure 25. Power venter motor part identification; Installation of Power Vented Motor
50 High Efficiency Propeller Fan Gas Unit Heater • GHND-SVX01A-EN Part Identification INSTALLATION INSTRUCTIONS FOR FIELD REPLACEMENT OF POWER VENTER MOTOR WARNING Hazardous Voltage and Gas! Turn off the gas supply and disconnect all electric power, including remote disconnects before servicing unit...
Page 52 - PRE-INSPECTION INFORMATION; Gas Equipment Start-Up
52 GHND-SVX01A-EN • High Efficiency Propeller Fan Gas Unit Heater Customer ______________________ Job Name & Number _________________________ PRE-INSPECTION INFORMATION With power and gas off. Type of Equip. Unit Heater, Duct Furnace, Indoor, Rooftop Serial Number_________________________ Model ...
