Make-Up Air Units Direct-Fired Outdoor Model DFOA September 2000 MUA-PRC001-EN
Introduction Why Use Trane Make-Up Air Units? To help relieve negative pressure inside commercial and industrial facilities, such as factories, garages, packing plants, kitchens, bowling alleys, and welding and foundry areas.Trane’s make-up air units offer a wide range of cfm, from 1,600 to 64,000, and gas-fired burners with capacities from 131,000 Btuh to 7,748,000 Btuh.These ranges offer excellent variety when selecting a unit that will fill both the owner’s needs and those of the specifying engineer.
Contents Introduction Features and Benefits 2 4 Unit Configurations 6 7 Application Considerations Model Number Description Controls 8 9 11 16 Electric Power 18 Dimension and Weights 19 Mechanical Specifications 36 37 43 Performance Data Gas Piping Options Accessories MUA-PRC001-EN 3
Features and Benefits À Supply air intake view showing inlet hood and birdscreen  Optional inlet damper wtih V-bank filter Á Gas burner section à Factory assembled gas manifold compartment Ä Access compartment to control panel and fan motor. Note: Fan motor panel has been removed for photograph.
Features and Benefits Basic Unit Gas-Fired Unit Feature: Casing with galvanized finish Benefit: Rust problem is greatly reduced Feature: Many standard, natural gas burning units bear the ETL label. Contact factory for verification.
Unit Configurations Horizontal Configurations For all arrangements shown, the gas piping and controls are on the near side. Selected horizontal units are available with special options — cooling coils (DX, chilled water), steam and electric coils, no burner section. Vertical Configurations For all arrangements shown, the gas piping and controls are on the near side. The electric control cabinet (EC) and disconnect are on the side opposite the air entering side.
Application Considerations Outdoor Units Outdoor make-up air units are the most common approach to relieving negative pressure inside commercial and industrial facilities. All units offer the advantage of a full support system that is watertight, provides a plenum for return air, and has easily accessible piping and electrical connections. The Need for Make-Up Air Units When more air is exhausted from a building than is supplied by the mechanical systems, the building is under a “negative” condition.
Model Number Description D F O A 1 0 9 A N C A 1 AA B 1 2 0 0 0 A 1,2,3 Digits 1,2,3 — Unit Description DFO = Direct Fired Outdoor Unit Digit 4 — Development Sequence A = First Generation Digits 5,6,7 — Unit Size 109 = Unit Size 109 112 = Unit Size 112 115 = Unit Size 115 118 = Unit Size 118 215 = Unit Size 215 218 = Unit Size 218 220 = Unit Size 220 222 = Unit Size 222 225 = Unit Size 225 230 = Unit Size 230 SSS = Special Unit Size Digit 8 — Main Power Supply 0 = No Selection A = 115/60/1 B = 230/60/1 C =
Performance Data Table PD-1 — Direct-Fired Outdoor Unit Models DFO Blower Size 109 1-9” 112 1-12” 115 1-15” 118 1-18” 215 2-15” 218 2-18” 220 2-20” 222 2-22” 225 2-25” 230 2-30” CFM STD Air @ 70 1600 1800 2000 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 11500 12000 12500 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000 25000 26000 27000 28000 29000 30000 31000 30000 32000 34000
Performance Data Table PD-2 — Direct-Fired Outdoor Unit — Burner Selection (MBh Input) Models DFO 109 112 115 118 215 218 220 222 225 230 CFM Std Air 70 F 1600 1800 2000 2250 2500 2750 3000 3250 3500 3750 4000 4250 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 11500 12000 12500 13000 14000 15000 16000 17000 18000 19000 20000 21000 22000 23000 24000 25000 26000 25000 26000 27000 28000 29000 30000 31000 30000 32000 34000 36000 38000 40000 42000 44000 46000 44000 48000 52
Gas Piping Component Identification GP-09 Pilot Gas Pressure Regulator GP-11 Main Gas Shutoff Valve GP-13 Pilot Gas Shutoff Valve GP-17 Auxiliary Gas Shutoff Valve GP-18 Auxiliary Gas Shutoff Valve GP-27 Orificed Needle Valve VG-01 Pilot Gas Valve VG-02 Main Gas Valve VG-03 Auxiliary Gas Valve VG-04 N/O Vent Valve VG-07 Maxitrol Modulating Valve PS-04 Low Gas Pressure Switch PS-07 High Gas Pressure Switch MUA-PRC001-EN Notes: 1 Vents to outside furnished by factory on outdoor units.
Gas Piping Table GP-1— Gas Pressure Regulator Selection If Burner Size (BS) Is: BS < 825 990 < BS < 4125 4400 < BS < 7975 12 And Gas Pressure (GP) Is: GP< 7” WC Then: Call factory to verify availability and pricing 7”WC < GP < 10” WC Use low gas pressure burner 10”WC < GP < 1 PSI No low gas pressure burner or high gas pressure regulator required 1 PSI < GP < 5 PSI Use high gas pressure regulator 1-5 PSI 5 PSI < GP < 10 PSI Use high gas pressure regulator 5-10 PSI 10 PSI < GP < 50 PSI Use hig
Gas Piping Table GP-2 — Gas Pipe Connection Size — Direct-Fired Units — IRI Gas Train — R/A Meeting ETL MBH 275 550 825 1,100 1,375 1,650 1,925 2,200 2,475 2,750 3,025 3,300 3,575 3,850 4,125 4,400 4,675 4,950 5,225 5,500 5,775 6,050 6,325 6,600 6,875 7,150 7,700 8,250 8,800 9,350 9,900 10,450 11,000 11,550 6-7" 1" 1 ¼" 2" 2" 2" N/A N/A N/A 2 ½" 3" 3" N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 8-11" ¾" 1" 1 ¼" 1 ¼" 1 ½" 1 ½" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½"
Gas Piping Table GP-4 — Gas Pipe Connection Size — Direct-Fired Units — Standard Gas Train — R/A Meeting ETL MBH 275 550 825 1,100 1,375 1,650 1,925 2,200 2,475 2,750 3,025 3,300 3,575 3,850 4,125 4,400 4,675 4,950 5,225 5,500 5,775 6,050 6,325 6,600 6,875 7,150 7,700 8,250 8,800 9,350 9,900 10,450 11,000 11,550 6-7" 1" 1 ¼" 1 ½" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 8-11" ¾" 1" 1 ¼" 1 ¼" 1 ½" 1 ½" 2" 2" 2" 2" 2" 2" 2
Gas Piping Table GP-6 — Gas Pipe Connection Size— Direct-Fired Units — FM Gas Train — 100% OA or R/A Not ETL MBH 275 550 825 1,100 1,375 1,650 1,925 2,200 2,475 2,750 3,025 3,300 3,575 3,850 4,125 4,400 4,675 4,950 5,225 5,500 5,775 6,050 6,325 6,600 6,875 7,150 7,700 8,250 8,800 9,350 9,900 10,450 11,000 11,550 12,100 6-7" 1 ¼" N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 8-11" ¾" 1" 1 ¼" 2" 2" 2" 2" N/A N/A N/A N
Controls System 14 — Constant Discharge Air Temperatures À Á Â Ã Ä Optional Component Description System 14 Applications Fan Switch On 1 Remote Temperature Selector Not temperature sensitive. Mounted on remote control station. 2 Air Sensor Installed in blower discharge. 3 Amplifier Installed in electrical control panel. Contains wiring terminals, sensitivity adjustments and one calibrating potentiometer. 4 Modulator/Regulator Valve Mounted in gas piping manifold.
Controls System 44 — Space Temperature Control À Á Component Description 1 Selectrastat™ Mounted on remote control station in heated area where temperature is sensed.Temperature range 55 F to 90 F. 2 Air Monitor Installed in blower discharge. Senses temperature. 3 Amplifier Installed in electrical control panel. Contains adjustments for maximum and minimum discharge air temperature, three calibrating potentiometers and a sensitivity adjustment. 4 Modulator/Regulator Valve Mounts in gas piping manifold.
Electric Power Table EP-1 — Motor Electrical Data — Single-Speed Motor HP ¾ 1 1½ 2 3 5 7½ 10 15 20 25 30 40 50 60 115 11.0 12.6 20.0 21.0 32.0 NA NA NA NA NA NA NA NA NA NA ODP — 1800 RPM Single Phase 208 230 208 5.4 5.5 2.5 6.2 6.3 3.5 10.5 10.0 5.0 12.6 10.5 6.3 16.8 16.0 9.5 25.0 23.0 15.4 33.0 31.0 22.0 NA 42.0 26.4 NA NA 42.0 NA NA 53.0 NA NA 72.0 NA NA 78.0 NA NA 108.0 NA NA 140.0 NA NA NA 3-Phase 230 2.6 2.8 4.2 5.6 8.0 13.2 20.0 25.2 40.6 50.0 59.0 71.0 95.6 120.0 145.0 460 1.3 1.4 2.1 2.8 4.
Dimension and Weights Horizontal Arrangement — Single Blower 109 112 115 118 Item Unit Components 1 2 3 4 5 6 7 8 9 10 11 Centrifugal Supply Fan Fan Motor Heat Source (Line Burner) Control Cabinet Hinged Control Cabinet Access Door Motor and Drive Access Plate Access Door Removable Suspension Lifting Lug Manifold Compartment Observation Port Unit Base Inlet Hood Support (By Others) • The purpose of hood support is to support the weight of the unit accessories which are attached to the inlet of the bas
Dimension and Weights Horizontal Arrangement — Double Blower 215 218 220 222 225 230 Item Unit Components 1 2 3 4 5 6 7 8 9 10 11 Centrifugal Supply Fan Fan Motor Heat Source (Line Burner) Control Cabinet Hinged Control Cabinet Access Door Motor and Drive Access Plate Access Door Removable Suspension Lifting Lug Manifold Compartment Observation Port Unit Base Inlet Hood Support (By Others) • The purpose of hood support is to support the weight of the unit accessories which are attached to the inlet of
Dimension and Weights Horizontal Arrangement — Single Blower Return Air Opening Downstream of Burner Motorized Return Air Damper — Motorized 75/25 Damper 109 112 115 118 Item Unit Components 1 2 3 4 5 6 7 8 9 10 11 Centrifugal Supply Fan Fan Motor Heat Source (Line Burner) Control Cabinet Hinged Control Cabinet Access Door Motor and Drive Access Plate Access Door Removable Suspension Lifting Lug Manifold Compartment Observation Port Unit Base Inlet Hood Support (By Others) • The purpose of hood suppor
Dimension and Weights Horizontal Arrangement — Double Blower Return Air Opening Downstream of Burner Motorized Return Air Damper — Motorized 75/25 Damper 215 218 220 222 225 230 Item Unit Components 1 2 3 4 5 6 7 8 9 10 11 Centrifugal Supply Fan Fan Motor Heat Source (Line Burner) Control Cabinet Hinged Control Cabinet Access Door Motor and Drive Access Plate Access Door Removable Suspension Lifting Lug Manifold Compartment Observation Port Unit Base Inlet Hood Support (By Others) • The purpose of hoo
Dimension and Weights Horizontal Arrangement — Single Blower With Mixing Box 109 112 115 118 Item Unit Components 1 2 3 4 5 6 7 8 9 10 11 Centrifugal Supply Fan Fan Motor Heat Source (Line Burner) Control Cabinet Hinged Control Cabinet Access Door Motor and Drive Access Plate Access Door Removable Suspension Lifting Lug Manifold Compartment Observation Port Unit Base Inlet Hood Support (By Others) • The purpose of hood support is to support the weight of the unit accessories which are attached to the
Dimension and Weights Horizontal Arrangement — Double Blower With Mixing Box 215 218 220 222 225 230 Item Unit Components 1 2 3 4 5 6 7 8 9 10 11 Centrifugal Supply Fan Fan Motor Heat Source (Line Burner) Control Cabinet Hinged Control Cabinet Access Door Motor and Drive Access Plate Access Door Removable Suspension Lifting Lug Manifold Compartment Observation Port Unit Base Inlet Hood Support (By Others) • The purpose of hood support is to support the weight of the unit accessories which are attached
Dimension and Weights Vertical Arrangement — Single Blower 100% Outside Air—Arrangement 4 Table DW-7 Model 109 112 115 118 A 10-3/8" (264) 1' 1-9/16" (344) 1' 4" (406) 1' 7" (483) B 11-15/16" (303) 1' 3-15/16" (405) 1' 6-15/16" (481) 1' 10-1/16" (560) C 1' 2-½" (368) 1' ½" (318) 11-1/8" (283) 7-7/8" (200) D 1' 3-1/8" (384) 1' 1-9/16" (344) 1' 3/8" (314) 1' 3/8" (314) E 3' 0" (914) 3' 0" (914) 3' 0" (914) 3' 0" (914) F 3' 0" (914) 3' 0" (914) 3' 0" (914) 3' 0" (914) G 6' 5" (1956) 6' 5" (1956) 6' 5"
Dimension and Weights Vertical Arrangement —Double Blower 100% Outside Air—Arrangement 4 Table DW-8 Model 215 218 220 222 225 230 A B C D 1' 4" 1' 6-15/16" 0' 7-7/8" 1' 0-3/8" (406) (481) (200) (314) 1' 7" 1' 10-1/16"0' 7-7/8" 1' 0-3/8" (483) (560) (200) (314) 2' 0-7/8" 2' 1-1/16" 1' 0-3/8" 1‘ 1-3/16” (632) (637) (314) (335) 2' 3-3/8" 2' 3-9/16" 1' 0-3/8" 1‘ 1-3/16” (695) (700) (314) (335) 2' 7-3/8" 2' 7-½" 1' 3-3/8" 1‘ 5-9/16” (797) (800) (391) (446) 3' 0-7/8" 3' 1" 1' 3-3/8" 1‘ 5-9/16” (937) (940) (391
Dimension and Weights Vertical Arrangement — Single Blower Return Air Downstream of Burner—Arrangement 4 Table DW-9 Model 109 112 115 118 A 10-3/8" (264) 1' 1-9/16" (344) 1' 4" (406) 1' 7" (483) B 11-15/16" (303) 1' 3-15/16" (405) 1' 6-15/16" (481) 1' 10-1/16" (560) C 1' 2-½" (368) 1' ½" (318) 11-1/8" (283) 7-7/8" (200) D 1' 3-1/8" (384) 1' 1-9/16" (344) 1' 3/8" (314) 1' 3/8" (314) E 3' 0" (914) 3' 0" (914) 3' 0" (914) 3' 0" (914) F 3' 0" (914) 3' 0" (914) 3' 0" (914) 3' 0" (914) G 6' 5" (1956) 6'
Dimension and Weights Vertical Arrangement — Double Blower Return Air Downstream of Burner—Arrangement 4 Table DW-10 Model 215 218 220 222 225 230 A 1' 4" (406) 1' 7" (483) 2' 0-7/8" (632) 2' 3-3/8" (695) 2' 7-3/8" (797) 3' 0-7/8" (937) B 1' 6-15/16" (481) 1' 10-1/16" (560) 2' 1-1/16" (637) 2' 3-9/16" (700) 2' 7-½" (800) 3' 1" (940) C 7-7/8" (200) 7-7/8" (200) 1' 0-3/8" (314) 1' 0-3/8" (314) 1' 3-3/8" (391) 1' 3-3/8" (391) D 1' 0-3/8" (314) 1' 3/8" (314) 1' 1-3/16" (335) 1' 1-3/16" (335) 1' 5-9/16" (4
Dimension and Weights Vertical Arrangement Single Blower with Mixing Box—Arrangement 4 Table DW-11 Model 109 112 115 118 A 10-3/8" (264) 1' 1-9/16" (344) 1' 4" (406) 1' 7" (483) B 11-15/16" (303) 1' 3-15/16" (405) 1' 6-15/16" (481) 1' 10-1/16" (560) C 1' 2-½" (368) 1' ½" (318) 11-1/8" (283) 7-7/8" (200) D 1' 3-1/8" (384) 1' 1-9/16" (344) 1' 3/8" (314) 1' 3/8" (314) E 3' 0" (914) 3' 0" (914) 3' 0" (914) 3' 0" (914) F 3' 0" (914) 3' 0" (914) 3' 0" (914) 3' 0" (914) G 6' 5" (1956) 6' 5" (1956) 6' 5" (
Dimension and Weights Vertical Arrangement Double Blower With Mixing Box—Arrangement 4 Table DW-12 Model 215 218 220 222 225 230 A 1' 4" (406) 1' 7" (483) 2' 0-7/8" (632) 2' 3-3/8" (695) 2' 7-3/8" (797) 3' 0-7/8" (937) B 1' 6-15/16" (481) 1' 10-1/16" (560) 2' 1-1/16" (637) 2' 3-9/16" (700) 2' 7-½" (800) 3' 1" (940) C 7-7/8" (200) 7-7/8" (200) 1' 0-3/8" (314) 1' 0-3/8" (314) 1' 3-3/8" (391) 1' 3-3/8" (391) D 1' 3/8" (314) 1' 3/8" (314) 1' 1-3/16" (335) 1' 1-3/16" (335) 1' 5-9/16" (446) 1' 5-9/16" (446)
Dimension and Weights Accessories Table DW-13 Model 109-118 215-218 220-222 225-230 R/A/I.D. 3' 6" x 1' 8-¼" (1067 x 514) 7' x 1' 8-¼" (2134 x 514) 10' x 1' 8-¼" (3048 x 514) 12' x 2' 2-½" (3658 x 673) NOTE: ALL DIMENSIONS IN INCHES SUBJECT TO MANUFACTURING TOLERANCES.
Dimension and Weights Roof Curbs Table DW-15 Model 109 112 115 118 A 10-3/8" (264) 1' 1-9/16" (344) 1' 4" (406) 1' 7" (483) B 1' 0-3/8" (314) 10-13/16" (275) 9-5/8" (244) 9-5/8" (244) C 11-15/16" (303) 1' 3-15/16" (405) 1' 6-15/16" (481) 1' 10-1/16" (560) D 11-¾" (298) 9-7/8" (251) 8-3/8" (213) 5-1/8" (130) E 1' 10-13/16" (579) 1' 8-7/8" (530) 1' 7-3/8" (492) 1' 7-3/8" (492) Table DW-16 Model 215 218 220 222 225 230 A B C 1' 4" 9-5/8" 1' 6-15/16" (406) (244) (481) 1' 7" 9-5/8" 1' 10-1/16" (483) (24
Dimension and Weights Roof Curbs for Units with Return Air Opening Downstream of Burner Table DW-17 Model 109 A 10-3/8" (264) 1' 1-9/16" (344) 1' 4" (406) 1' 7" (483) 112 115 118 B 1' 0-3/8" (314) 10-13/16" (275) 9-5/8" (244) 9-5/8" (244) C 11-15/16" (303) 1' 3-15/16" (405) 1' 6-15/16" (481) 1' 10-1/16" (560) D 11-¾" (298) 9-7/8" (251) 8-3/8" (213) 5-1/8" (130) E 1' 10-13/16" (579) 1' 8-7/8" (530) 1' 7-3/8" (492) 1' 7-3/8" (492) Table DW-18 Model 215 218 220 222 225 230 A 1' 4" (406) 1' 7" (483) 2
Dimension and Weights Roof Curbs for Units with Mixing Box Table DW-19 Model 109 112 115 118 A 10-3/8" (264) 1' 1-9/16" (344) 1' 4" (406) 1' 7" (483) B 1' 0-3/8" (314) 10-13/16" (275) 9-5/8" (244) 9-5/8" (244) C 11-15/16" (303) 1' 3-15/16" (405) 1' 6-15/16" (481) 1' 10-1/16" (560) D 11-¾" (298) 9-7/8" (251) 8-3/8" (213) 5-1/8" (130) E 1' 10-13/16" (579) 1' 8-7/8" (530) 1' 7-3/8" (492) 1' 7-3/8" (492) Table DW-20 Model 215 218 220 222 225 230 A B C D 1' 4" 9-5/8" 1' 6-15/16" 5-1/8" (406) (244) (481)
Dimension and Weights Approximate Weights Table W-1 — Outdoor Unit Weights in Pounds (Approximate)* Unit Size 109 112 115 118 215 218 220 222 225 230 Basic Horizontal Unit 760 760 760 820 1180 1300 2280 2370 2990 3130 Basic Vertical Unit 1010 1010 1010 1060 1650 1770 3270 3360 4250 4390 Inlet Hood 140 140 140 140 210 210 275 275 365 365 Inlet Damper 60 60 60 60 160 160 210 210 320 320 V-Bank Filter 125 125 125 125 200 200 250 250 330 330 Mixing Box 320 320 320 320 586 586 730 730 1006 1006 Discharg
Mechanical Specifications General Burner Section Controls The BASIC unit is factory-assembled, wired and test-fired. DEPENDING ON THE OPTIONS, UNIT MAY SHIP IN SECTIONS DUE TO PHYSICAL SIZE OF EQUIPMENT. Although designed primarily for outdoor mounting, it can be mounted indoors. Units are mounted on steel rails with lifting lugs, which make them suitable for curb or slab mounting. Units are available for operation on either natural or LP (propane) gas.
Options Motorized Return Air Damper Purpose To provide a way for recirculating return air. Operation A two position switch controls the return air damper. When the two position switch is in the “RA” position, the RA damper opens. Fifty percent of supply air is RA, 50 percent of supply air is OA. RA damper can be set to allow from 0 percent to 50 percent return air by field adjustment of the linkage rods.The gas valve opening is restricted when the RA damper is open.
Options Mixing Box — Temperature Control Purpose To provide a way for recirculating return air and letting mixed air temperature determine the amount of OA/RA. Operation A temperature sensor located after the Vbank filter modulates the OA and RA dampers to maintain a set temperature. If temperature at sensor is cooler than setting, OA damper modulates to a more closed position, and RA damper modulates to a more open position.
Options Mixing Box — Building Pressure Control Purpose To provide a way for recirculating return air and letting building pressure control the amount of air which is recirculated. Operation If building pressure is less than desired, the RA damper modulates to a more closed position and the OA damper modulates to a more open position. More OA is brought into building.
Options Motorized Outlet Damper Purpose To provide a shut-off damper. Operation When the fan switch is on, the outlet damper begins to open. As the outlet damper approaches the full open position, a built-in end switch located inside the damper motor closes.The closed end switch starts the fan motor. When the fan switch is turned to the “off” position, or if there is a power failure, the outlet damper closes.
Options Exhaust Interlock The exhaust interlock is a pair of contacts on the unit that will close when the unit is “on.”The customer can wire the exhaust fan to the contacts so that when the heating unit is “on,” the exhaust fan will also be “on.” Note the heating unit turns on the exhaust fan. Example: Same as example above, only at 5:00 PM the NSB thermostat would turn the unit on and off. If the temperature in the space fell below the setting of the NSB thermostat, the unit would come “on.
Options Factory Installed Options Motors — General All motors are provided as standard, with a starter for external overload protection, a control transformer, and a fusible disconnect switch. Open Drip-Proof Motor 60 Hz/1800 Rpm Two-Speed/One Winding Motors 60 Hz/1800/900 Rpm Three-Phase Only Optional 208 and 230V motors available on 1 to 20 hp models. Optional 460V motors are available on 1 to 50 hp models. All motors have rigid base construction and ball bearings. Class B insulation is on all motors.
Accessories Additional Factory Installed Options High Gas Pressure Regulator 1-5 Psig Units 825 MBh and less require an additional gas pressure regulator if inlet pressure exceeds 1 psig. Inlet pressure at the job must be specified. 5-10 Psig An additional regulator is furnished. Inlet pressure at the job must be specified. Insulation One-inch, 1½ lb. fiberglass insulation pin spotted to casing.
The Trane Company An American Standard Company www.trane.com For more information contact your local district office, or e-mail us at comfort@trane.com Literature Order Number MUA-PRC001-EN File Number PL-UN-MUA-DFOA-PRC001-9-00 Supersedes MUA-D-2 12/97 Stocking Location Inland - LaCrosse Since The Trane Company has a policy of continuous product and product data improvement, it reserves the right to change design and specifications without notice.
