Make Up Air Heaters Direct Fired Indoor/Modular DFIA PDF Catalog MUA PRC002 EN AJ 2200 Muaprc002en
User Manual: AJ-2200
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Make-Up Air Heaters Direct Fired Indoor/Modular Model DFIA September 2000 MUA-PRC002-EN Introduction Why Use Trane Make-Up Air Units? Why Use Make-Up Air Units? The direct fired modular units provide the flexibility to “mix and match” various modules for almost any indoor application, for indoor suspension or floor mounting. • 14 standard model sizes • 1,600 to 64,000 cfm • 82 to 9,016 MBh. Outside air should not be allowed to drift in through windows, door cracks and other openings – creating a strain on the heating system. Outside air should be controlled, tempered and coordinated with the exhaust by a make-up air unit. The latter is reliable, efficient and does not disrupt building activities. Single blower units provide • 1,600 to 30,000 cfm • double blower units 9,000 to 64,000 cfm. Why Use Direct Gas-Firing? Larger jobs can usually be handled with multiple units without sacrificing either economy or performance. What Is Make-Up Air? Make-up air is an outside air supply that is brought in to relieve “air starvation.” Without make-up air, a building is under a “negative” condition and the following will occur: • Backdrafts in natural flues, ventilators and stacks. • Reduced air volume handled by the exhaust fans and subsequently inadequate removal of contaminants. • Dispersal of contaminants throughout the work area by high velocity crosscurrents from uncontrolled outside air sources. • Uncomfortable and unhealthy working conditions. • Pilot outages. Maximum economy is realized with direct gas-firing because the incoming air is heated directly in the burner chamber.This provides 100 percent efficiency (92 percent sensible, 8 percent latent) while eliminating a heat exchanger or combustion chamber that could burn out or corrode. Trane direct-fired units are factory tested, include the necessary controls for operating the system and generally cost less than alternate systems. Installation is simple since the unit, (when shipping permits), is shipped as a complete package. The burner is fully modulating, with a minimum firing rate of four percent of full input.This characteristic results in just the right amount of heat under all operating conditions. When Is It Required? Make-up air is required whenever exhaust fans are used.This need for a building “air change” arises when there are: • Processes which generate contaminants in the form of noxious fumes or dust. • Activities which create excessive heat or undesirable odors. • Hazardous material storage areas. • Ventilation requirements for a building’s inhabitants. • State and local code requirements. ©American Standard Inc. 2000 MUA-PRC002-EN Contents Introduction Features and Benefits 2 4 Unit Configurations Application Considerations 6 8 Selection Procedure 9 Model Number Description 10 12 16 24 Performance Data Gas Piping Approvals Controls 25 Electric Power 27 Dimension and Weights 28 Mechanical Specifications 35 36 Options MUA-PRC002-EN 3 Features and Benefits Discharge of fan section Gas burner section V-bank filter with hinged access door Gas manifold and control cabinet Feature: Basic unit is factory assembled and wired Benefit: Reduces field installation cost Feature: Adjustable motor mount Benefit: Belt tension can be field adjusted for maximum belt life Feature: Maxitrol System 14 and System 44 Benefit: Fast acting temperature control systems available Feature: Factory tested Benefit: Eliminates majority of field start-up problem caused by defective controls Feature: All fuses factory furnished Benefit: Delay at start-up eliminated Feature: Return air cycle capability Benefit: Return air cycle results in fuel economy for pressurized heating systems and eliminates need for two-speed fan operation Minimizes heating cost 4 MUA-PRC002-EN Features and Benefits Reliable Operation The standard unit includes all of the controls needed for trouble-free operation. If the designer does not utilize a master panel for consolidating mechanical equipment, an optional remote control station should be ordered.This device includes switches and signal lights for operating the make-up air unit and monitoring its performance from any convenient location. While rare, malfunctions can occur because a belt breaks, local power is interrupted or a component fails. If this should happen, the unit’s control system is designed to take over. Its overlapping fail-safe protective devices will turn on an alarm light and prevent burner operation until the problem has been corrected. Because of this attention to detail, combustion will be clean and odorless under the most adverse conditions.The incoming “make-up air” will be at least five times purer than the requirements set down by the U.S. Bureau of Standards. Equipment Approval Options Owners and specifiers have three very important reasons for wanting equipment approvals. One reason is to establish a manufacturer’s reliability. Trane has gone to great lengths to satisfy these needs. In the first case, reliability is established for our standard unit through conservative design and the use of U.L. listed components. For industrial applications, the unit can also be furnished with special gas controls to comply with FM or IRI.The latter is available for applications where the exact insurance approval agency has not been established. Special Construction Features • External bearings for easy service and lubrication. • External motor for ease of service and belt maintenance. • External bearings and motor allow the unit to operate up to 170 F without any modifications and up to 300 F with minor alterations making it perfect for many process applications. • Hollow fan shaft on double blower models eliminate the need for a center bearing which is difficult to service. • Enlarged filter sections increasing filter life and reducing service time. • Hinged filter access door. • Service platform available as an option for easy maintenance on suspended units. A second looks for conformance with equipment standards if any have been established for the particular product. And finally, there may be requirements set down by an industrial user’s insurance carrier. MUA-PRC002-EN 5 Unit Configurations Horizontal Configurations For all arrangements shown, controls, gas piping and fan motor 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. Contact yourTrane representative for availability and pricing. 6 MUA-PRC002-EN Unit Configurations Vertical Configurations For all arrangements shown, the gas piping is on the near side.The electric control cabinet (EC) and disconnect are on the side opposite the air entering side. Selected vertical units are available with special options – steam and electric coils, no burner section. Contact yourTrane representative for availability. MUA-PRC002-EN 7 Application Considerations Application and Various Modular Arrangements 1 Make-up air units are typically used to compensate for air being exhausted from a building or other structure. 2 Application for closed systems such as ovens or paint booths (consult home office). 8 3 For use as a door heater where outside air is heated and not prevented from infiltrating. 4 The DFI can be used as an air handler, no burner section. Can also be used with DX, electric, indirect fired section, CW, HW and steam coils. Contact yourTrane representative. MUA-PRC002-EN Selection Procedure Selection Procedure Calculating Total External Static Pressure to Determine Fan Motor Horsepower To determine the fan motor horsepower, use the following steps: 1. Select Unit Determine cabinet size and cfm 2. Determine Static Pressure of Optional Accessories Add the static pressures of the optional accessories. 3. Determine External Static Pressure Calculate external static pressure of system due to ductwork, grilles, etc. This is the static pressure external to the DFIA unit and is up to the system designer to determine. 4. Calculate Total External Static Pressure Add the static pressures of the optional accessories to the external static pressure to determine total external static pressure. 5. Use Tables PD-1 and PD-2 to determine the fan motor horsepower. Example: 1. Specification calls for a 40,000 cfm unit. Select a size 225. 2. Unit will require an inlet hood, inlet damper and a v-bank filter. Therefore,the static pressure of the optional accessories is 0.51”WC Fresh Air Inlet Hood and Birdscreen Motor Operated Inlet Damper V-bank Filter Section Static Pressure of Optional Accessories 0.13” WC 0.13” WC 0.25” WC 0.51” WC 3. Engineer has determined that the external static pressure due to the ductwork is 0.75”WC. 4. Static Pressure of optional accessories External static pressure Total External Static Pressure 0.51” WC 0.75” WC 1.26” WC 5. For a size 225 unit at 40,000 cfm and 1.26” total external static pressure, a 30 hp fan motor will be required MUA-PRC002-EN 9 Model Number Description A 109 1 A D N A 1,2,3 4 5,6,7 8 DFI 9 10 11 12 13 14,15 16 17 18 19 20 21 22 Digits 1,2,3 — Unit Description DFI = Direct Fired Indoor Unit Digit 4 — Development Sequence A = First Generation Digits 5,6,7 — Fan Section 109 = Unit Size 109 112 = Unit Size 112 115 = Unit Size 115 118 = Unit Size 118 120 = Unit Size 120 122 = Unit Size 122 125 = Unit Size 125 130 = Unit Size 130 215 = 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 — Burner Section 0 = Without Burner Section 1 = With Burner Section Digit 9 — Main Power Supply 0 = No Selection A = 115/60/1 B = 230/60/1 C = 208/60/1 D = 208/60/3 E = 230/60/3 F = 460/60/3 S = Special Digit 10 — Design Sequence D = Design Sequence Digit 11 — Fuel 0 = No Selection N = Natural Gas P = LP Gas (Propane) S = Special 10 1 AA B 1 2 0 0 0 AH Digit 12 — Gas Control Option A = Series 14 Constant DischargeTemp B = Series 44 SpaceTemp Control S = Special Digit 13 — Gas Train Approvals 1 = Standard 3 = IRI 4 = FM S = Special Digit 14,15 — Burner Input Rating (MBH) 00= No Selection AA = 275 MBH Input AB = 550 MBH Input AC = 825 MBH Input AD = 990 MBH Input AE = 1100 MBH Input AF = 1375 MBH Input AG = 1650 MBH Input AH = 1925 MBH Input AJ = 2200 MBH Input AK = 2475 MBH Input AL = 2750 MBH Input AN = 3025 MBH Input AP = 3300 MBH Input AQ = 3575 MBH Input AR = 3850 MBH Input AT = 4125 MBH Input AV = 4400 MBH Input AW = 4675 MBH Input AX = 4950 MBH Input AY = 5225 MBH Input AZ = 5500 MBH Input A1 = 5775 MBH Input A2 = 6050 MBH Input A3 = 6325 MBH Input A4 = 6600 MBH Input A5 = 6875 MBH Input A6 = 7150 MBH Input A7 = 7425 MBH Input A8 = 7700 MBH Input A9 = 7975 MBH Input BA = 8250 MBH Input BB = 8525 MBH Input BC = 8800 MBH Input BD = 9075 MBH Input SS = Special MUA-PRC002-EN Model Number Description A 109 1 A D N A 1,2,3 4 5,6,7 8 DFI 9 10 11 12 13 14,15 16 17 18 19 20 21 22 1 Digit 16 — Blower Motor HP 0 = No Selection B = ¾ HP Motor C = 1 HP Motor D = 1 ½ HP E = 2 HP Motor F = 3 HP Motor G = 5 HP Motor H = 7 ½ HP Motor J = 10 HP Motor K = 15 HP Motor L = 20 HP Motor M = 25 HP Motor P = 30 HP Motor Q = 40 HP Motor R = 50 HP Motor T = 60 HP Motor S = Special Digit 17 — Motor Speed and Starter 0 = No Selection 1 = Single Speed ODP 1800 RPM 2 = Single Speed TEFC 1800 RPM 3 = Single Speed Energy Effic ODP 1800 RPM 4 = Single Speed Energy Effic TEFC 1800 RPM 5 = 2S1W ODP 1800/900 RPM 6 = 2S2W ODP 1800/1200 RPM S = Special Digit 18 — Fan Discharge* Horizontal Arrangement 1 = Arrangement 1, Top 2 = Arrangement 2, Side 3 = Arrangement 3, Bottom Vertical Arrangement 4 = Arrangement 4, Side 5 = Arrangement 5, Side 6 = Arrangement 6, Top 7 = Arrangement 7,Top 8 = Arrangement 8, Side 9 = Arrangement 9, Side *Select arrangements from pages 6 and 7. AA B 1 2 0 0 0 AH Digit 20 — V-Bank Filter Section 0 = No Selection A = V-Bank Filter Section with Permanent Filters B = V-Bank Filter Section without Filters C = V-Bank Filter Section withThrowaway Filters Digit 21 — Dampers/Mixing Box 0 = No Selection A = Motorized RA Damper B = Motorized 75/25 Damper C = Mixing Box –Temperature Control D = Mixing Box – Building Pressure Control E = Mixing Box – Manual Control Digit 22 — Miscellaneous Options AA = Controls opposite from standard AB = Motorized Inlet Damper AC = Insulation on Blower Section AD = Insulation on Burner Section AE = Insulation on Return Air Section AF = Insulation on Filter Section AG = Inlet On-Off Duct Stat AJ = 115V Duplex Service Receptacle with Power Transformer AK = Circuit Analyzer AL = UV Flame Sensor AN = Clogged Filter Switch with Light AP = Exhaust Interlock AQ = Interlocking Relay AR = City of Chicago Controls AT = Omit Disconnect Switch AV = High Gas Pressure Regulator 1-5 PSIG AW = High Gas Pressure Regulator 5-10 PSIG AX = Adjustable Drive AY = Discharge Louver AZ = Painted Blower Cabinet A1 = Painted Burner Section A2 = Painted Return Air Section A3 = Painted Filter Section A4 = Painted Discharge Louver BJ = Low Gas Pressure Burner SS = Special Digit 19 — Inlet Hood and Birdscreen 0 = None A = Inlet Hood and Birdscreen with Permanent Filters B = Inlet Hood and Birdscreen without Filters MUA-PRC002-EN 11 Performance Data Table PD-1 — Direct Fired Indoor Unit Performance Data Models Blower DFI Size 12 109 1-9” 112 1-12” 115 1-15” 118 1-18” 120 1-20” 122 1-22” 125 1-25” 130 1-30” 215 2-15” 218 2-18” 220 2-20” CFM FPM Std Air Outlet @ 70 Velocity 1600 1914 1900 2273 2200 2632 2600 3110 3000 3589 3250 2257 3500 2431 3750 2604 4000 2778 4250 2951 4500 2239 5000 2488 5500 2736 6000 2985 6500 2265 7000 2439 7500 2613 8000 2787 8500 2962 9000 2143 9500 2262 10000 2381 10500 2500 11000 2619 11000 2157 12000 2353 13000 2549 14000 2745 15000 2941 14000 2086 15000 2235 16000 2385 18000 2683 20000 2981 22000 2486 24000 2581 26000 2796 28000 3011 30000 3226 9000 2239 9500 2363 10000 2488 10500 2612 11000 2736 11500 2861 12000 2985 12500 2178 13000 2265 14000 2439 15000 2613 16000 2787 17000 2962 18000 2143 19000 2262 20000 2381 21000 2500 22000 2619 23000 2738 24000 2857 25000 2976 26000 3095 ¼” 3/8” ¾ 1 1½ 2 3 1½ 2 2 3 3 2 3 3 5 3 5 5 5 5 5 5 5 5 7½ 5 7½ 7½ 7½ — 7½ 7½ 7½ 10 10 10 10 15 15 20 5 5 5 5 7½ 7½ 7½ 7½ 7½ 7½ 7½ 10 10 7½ 10 10 10 15 15 15 15 15 1 1 1½ 2 3 2 2 2 3 3 2 3 3 5 5 5 5 5 5 5 5 5 7½ 7½ 5 7½ 7½ 10 10 7½ 7½ 7½ 10 15 10 15 15 15 20 5 5 5 5 7½ 7½ 7½ 7½ 7½ 7½ 10 10 10 10 10 10 15 15 15 15 15 20 Total External Static Pressure (WC) ½” ¾” 1” 1 ¼” HP 1 1 — — 1½ 1½ 1½ 1½ 1½ 1½ 2 2 2 2 3 3 3 3 3 3 2 2 3 3 2 3 3 3 3 3 3 3 3 3 3 3 3 3 3 5 3 3 3 3 3 3 3 5 3 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5 7½ 5 7½ 7½ 7½ 7½ 7½ 7½ 7½ 5 5 7½ 7½ 5 7½ 7½ 7½ 5 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 10 7½ 7½ 7½ 7½ 7½ 7½ 7½ 10 7½ 10 10 10 10 10 10 15 10 10 15 15 7½ 7½ 10 — 7½ 10 10 10 7½ 10 10 15 10 10 15 15 15 15 15 15 10 15 15 15 15 15 15 15 15 15 20 20 15 20 20 20 20 20 20 25 5 5 7½ — 5 5 7½ 7½ 5 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 7½ 10 7½ 7½ 10 10 7½ 7½ 7½ — 7½ 7½ 10 10 7½ 10 10 10 10 10 10 15 10 10 15 15 10 15 15 15 10 10 15 15 10 10 15 15 10 15 15 15 15 15 15 15 15 15 15 20 15 15 15 20 15 15 20 20 15 20 20 20 20 20 20 20 1 ½” 2” — 2 2 3 5 3 3 3 5 5 5 5 5 5 5 7½ 7½ 7½ 7½ 7½ 7½ 7½ 10 10 10 10 10 15 15 — 15 15 15 15 15 20 20 20 25 — — — 7½ 10 10 10 — 7½ 15 15 15 15 15 15 15 20 20 20 20 20 25 — — 3 3 5 3 5 5 5 5 — 5 5 7½ 7½ 7½ 7½ 7½ 10 — — 10 10 10 — 15 15 15 15 — — — 15 20 — 20 25 25 30 — — — — 10 10 15 — — — 15 15 20 — — 20 20 20 20 25 25 25 MUA-PRC002-EN Performance Data Table PD-2 — Direct Fired Indoor Unit Performance Data Models Blower DFI Size 222 2-22” 225 2-25” 230 2-30” CFM FPM Std Air Outlet @ 70 Velocity 25000 2451 26000 2549 27000 2647 28000 2745 29000 2843 30000 2941 31000 3039 30000 2235 32000 2385 34000 2534 36000 2683 38000 2832 40000 2981 42000 3130 44000 3279 46000 3428 44000 2366 48000 2581 52000 2796 56000 3011 60000 3226 64000 3441 ¼” 3/8 15 15 15 15 20 20 20 15 15 15 20 20 20 25 25 30 20 20 25 30 30 40 15 15 15 20 20 20 20 15 15 20 20 20 25 25 30 30 20 25 25 30 40 40 ” Total External Static Pressure (WC) ½” ¾” 1” 1 ½” HP 15 15 20 20 15 20 20 20 15 20 20 20 20 20 20 25 20 20 25 25 20 20 25 25 20 25 25 25 15 15 20 20 15 20 20 20 20 20 20 25 20 20 25 25 20 25 25 25 25 25 30 30 25 30 30 30 30 30 30 40 30 40 40 40 20 25 25 30 25 25 30 30 25 30 30 40 30 40 40 40 40 40 40 50 40 40 50 50 1 ½” 2” 20 20 25 25 25 25 30 — 25 25 25 30 30 40 40 40 — 40 40 40 50 50 25 25 25 30 30 30 30 — — 30 30 40 40 40 40 50 — — 50 50 50 60 Notes: 1. Use the following static pressures for the optional accessories: Fresh Air Inlet Hood and Birdscreen 0.13” WC Fresh Air Inlet Hood with Filters 0.25” WC Motor Operated Inlet Damper 0.13” WC V-Bank Filter Section 0.25” WC Mixing Box 0.40” WC Discharge Louver 0.13” WC MUA-PRC002-EN 13 Performance Data Table PD-3 — Direct Fired Indoor Unit — Burner Selection Table (MBH Input) DFI Model 109 112 115 118 120 122 125 130 215 14 CFM Std. Air 70° 1600 1900 2200 2600 3000 3250 3500 3750 4000 4250 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 9500 10000 10500 11000 11000 12000 13000 14000 15000 14000 15000 16000 17000 18000 20000 22000 24000 26000 28000 30000 9000 9500 10000 10500 11000 11500 12000 70° Rise 131 156 181 214 247 267 288 308 329 349 370 411 452 493 534 575 616 657 698 740 781 822 863 904 904 986 1068 1150 1233 1150 1233 1315 1397 1479 1643 1808 1972 2137 2301 2465 740 781 822 863 904 945 986 80° Rise 150 178 207 244 282 305 329 352 376 399 423 470 517 563 610 657 704 751 798 845 892 939 986 1033 1033 1127 1221 1315 1409 1315 1409 1503 1597 1690 1878 2066 2254 2442 2630 2817 845 892 939 986 1033 1080 1127 90° Rise 169 201 232 275 317 343 370 396 423 449 475 528 581 634 687 740 792 845 898 951 1004 1057 1109 1162 1162 1268 1373 1479 1585 1479 1585 1690 1796 1902 2113 2324 2536 2747 2958 3170 951 1004 1057 1109 1162 1215 1268 100° Rise 188 223 258 305 352 382 411 440 470 499 528 587 646 704 763 822 880 939 998 1057 1115 1174 1233 1291 1291 1409 1526 1643 1761 1643 1761 1878 1996 2113 2348 2583 2817 3052 3287 3522 1057 1115 1174 1233 1291 1350 1409 110° Rise 207 245 284 336 387 420 452 484 517 549 581 646 710 775 839 904 968 1033 1098 1162 1227 1291 1356 1420 1420 1550 1679 1808 1937 1808 1937 2066 2195 2324 2583 2841 3099 3357 3616 3874 1162 1227 1291 1356 1420 1485 1550 120° Rise 225 268 310 366 423 458 493 528 563 599 634 704 775 845 916 986 1057 1127 1197 1268 1338 1409 1479 1550 1550 1690 1831 1972 2113 1972 2113 2254 2395 2536 2817 3099 3381 3663 3944 4226 1268 1338 1409 1479 1550 1620 1690 MUA-PRC002-EN Performance Data Table PD-4 — Direct Fired Indoor Unit — Burner Selection Table (MBH Input) DFI Model 218 220 222 225 230 CFM Std. Air 70° 13000 14000 15000 16000 17000 18000 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 52000 56000 60000 64000 70° Rise 1068 1150 1233 1315 1397 1479 1479 1561 1643 1726 1808 1890 1972 2054 2137 2054 2137 2219 2301 2383 2465 2547 2465 2630 2794 2958 3123 3287 3451 3616 3780 3616 3944 4273 4602 4930 5259 80° Rise 1221 1315 1409 1503 1597 1690 1690 1784 1876 1972 2066 2160 2254 2348 2442 2348 2442 2536 2630 2723 2817 2911 2817 3005 3193 3381 3569 3757 3944 4132 4320 4132 4508 4883 5259 5635 6010 90° Rise 1373 1479 1585 1690 1796 1902 1902 2007 2113 2219 2324 2430 2536 2641 2747 2641 2747 2853 2958 3064 3170 3275 3170 3381 3592 3803 4015 4226 4437 4649 4860 4649 5071 5494 5917 6339 6762 100° Rise 1526 1643 1761 1878 1996 2113 2113 2230 2348 2465 2583 2700 2817 2935 3052 2935 3052 3170 3287 3404 3522 3639 3522 3757 3991 4226 4461 4696 4930 5165 5400 5165 5635 6104 6574 7043 7513 110° Rise 1679 1808 1937 2066 2195 2324 2324 2453 2583 2712 2841 2970 3099 3228 3357 3228 3357 3487 3616 3745 3874 4003 3874 4132 4390 4649 4907 5165 5423 5682 5940 5682 6198 6715 7231 7748 8264 120° Rise 1831 1972 2113 2254 2395 2536 2536 2677 2817 2958 3099 3240 3381 3522 3663 3522 3663 3803 3944 4085 4226 4367 4226 4508 4790 5071 5353 5635 5917 6198 6480 6198 6762 7325 7889 8452 9016 Notes: 1. Determine the temperature rise required through the heater by subtracting winter design temperature from the desired indoor temperature. 2. Select burner required: BTUH = CFM x T x 1.08 .92 Formula includes 1.08 constant for heat content of air and .92 factor, which is an average ratio of net and gross heating values of common fuel gases (92% sensible, 8% Latent) 3. Contact your Trane representative on temperature rise requirements greater than 120 F. MUA-PRC002-EN 15 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 16 Notes: 1 Vents to outside by others. 2 Under 825 MBh will require an additional gas pressure regulator if inlet pressure exceeds 1 psig. 3 4400 MBh and above will require a minimum inlet pressure of 1 psig. For inlet pressure under 1 psig, contact factory. 4 Contact factory for manifold required for CGA. *Items PS-04, PS-07, VG-04 and GP-18 are not required to meet IRI requirements if the unit is ETL approved. MUA-PRC002-EN Gas Piping Table GP-1 — Gas Pressure Regulator Selection If Burner Size (BS) Is: BS < 825 990 < BS < 4125 4400 < BS < 9075 MUA-PRC002-EN And Gas Pressure (GP) Is: Then: GP< 7” WC 7” WC < GP < 10” WC Call factory to verify availability and pricing 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 high gas pressure regulator over 10 PSI 50 PSI < GP Call factory to verify availability and pricing GP < 7” WC Call factory to verify availability and pricing 7” WC < GP < 10” WC Use low gas pressure burner 10” WC < GP < 5 PSI No low gas pressure burner or high gas pressure regulator required 5 PSI < GP < 10 PSI Use high gas pressure regulator 5-10 PSI 10 PSI < GP < 50 PSI Use high gas pressure regulator over 10 PSI 50 PSI < GP Call factory to verify availability and pricing GP < 1 PSI Call factory to verify availability and pricing 1 PSI < GP < 5 PSI No low gas pressure burner or high gas pressure regulator required 5 PSI < GP < 10 PSI Use high gas pressure regulator 5-10 PSI 10 PSI < GP < 50 PSI Use high gas pressure regulator over 10 PSI 50 PSI < GP Call factory to verify availability and pricing 17 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 18 6-7" 1" 1 ¼" 2" 2" 2" N/A N/A N/A 2 1/2" 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" 2 ½" 2 ½" 3" 3" 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 12-14" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" N/A N/A N/A N/A N/A N/A Inlet Gas Pressure (inches of water column) 15-20" 21-27" 1 psi 2 psi ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 2" 1 ½" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 2 ½" 3" 3" 3" 3" 3" 3" 3" 3" 3" 3" 3" 3" 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 3 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" 3" N/A N/A N/A 4 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" 3" N/A N/A N/A 5 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2½ 2½ 2½ 2½ 2½ 2½ 3" 3" 3" 3" 3" N/A N/A N/A MUA-PRC002-EN Gas Piping Table GP-3 — Gas Pipe Connection Size — Direct-Fired Units — FM 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 MUA-PRC002-EN 6-7" 1" 1 ¼" 1 ½" 2" 2" 2" 2" 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" 1 ¼" 1 ½" 1 ½" 2" 2" 2" 2" 2" 2 ½" 3" 3" 3" 3" 3" 3" 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 12-14" ¾" ¾" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ½" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" N/A N/A N/A N/A N/A N/A Inlet Gas Pressure (inches of water column) 15-20" 21-27" 1 psi 2 psi ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" 3" 3" 3" 3" 3" 3" 3" 3" 3" 3" 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 3 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" N/A N/A N/A 4 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" N/A N/A N/A 5 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" N/A N/A N/A 19 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 20 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 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3 3 3 3 N/A N/A N/A N/A N/A N/A N/A N/A N/A 12-14" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3 3 3 N/A N/A N/A Inlet Gas Pressure (inches of water column) 15-20" 21-27" 1 psi 2 psi ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3 3 3 3 3 3 3 3 3 3 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 3 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3 3 3 N/A N/A N/A 4 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3 3 3 N/A N/A N/A 5 psi ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3 3 3 N/A N/A N/A MUA-PRC002-EN Gas Piping Table GP-5 — Gas Pipe Connection Size — Direct-Fired Units — IRI 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 MUA-PRC002-EN 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" N/A 1 ½" 2" 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 12-14" ¾" ¾" 1" 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 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 Inlet Gas Pressure (inches of water column) 15-20" 21-27" 1 psi 2 psi ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 2" 1 ½" 1 ¼" 1 ¼" 2" 1 ½" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2 ½" 2" 2" 2 ½" 2 ½" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" N/A 2 ½" 2 ½" 2 ½" N/A 3" 2 ½" 2 ½" N/A 3" 3" 3" N/A 3" 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 3 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" N/A N/A N/A N/A 4 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" N/A N/A N/A N/A 5 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" N/A N/A N/A N/A 21 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/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 12-14" ¾" ¾" 1" 1 ¼" 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2" 3" 3" 3" 3" 3" 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 Inlet Gas Pressure (inches of water column) 15-20" 21-27" 1 psi 2 psi ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 1" ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 2" 2" 1 ½" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" N/A 2 ½" 2 ½" 2 ½" N/A 3" 2 ½" 2 ½" N/A 3" 3" 3" N/A 3" 3" 3" N/A 3" 3" 3" N/A N/A 3" 3" N/A N/A CF CF N/A N/A CF CF 3 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" CF CF 4 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" CF CF 5 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" CF CF Note: CF = Contact Factory 22 MUA-PRC002-EN Gas Piping Table GP-7 — Gas Pipe Connection Size — Direct-Fired Units — Standard 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" 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 8-11" ¾" 1" N/A 2" 2" 2" N/A 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 N/A N/A 12-14" ¾" ¾" 1" 1 ¼" 1 ¼" 1 ¼" 1 ½" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" N/A N/A N/A N/A N/A N/A N/A N/A Inlet Gas Pressure (inches of water column) 15-20" 21-27" 1 psi 2 psi ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 1" ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1½ 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" N/A 3" 3" 3" N/A 3" 3" 3" N/A 3" 3" 3" N/A N/A CF CF N/A N/A CF CF 3 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" CF CF 4 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" CF CF 5 psi ¾" ¾" ¾" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 3" 3" 3" 3" CF CF Note: CF = Contact Factory MUA-PRC002-EN 23 Approvals CGA Approval Requirements ETL Labeling Requirements A DFIA unit with no mixing box, motorized RA damper, or motorized 75/ 25 damper can bear the CGA label if: A DFIA unit can bear the ETL label if: 1 The unit SCFM is less than the Maximum SCFM given below. 2 The unit input is less than the Maximum Input BTUH given below. 3 The static pressure is in the range given below. 4 Unit discharge temperature is 75 F maximum. 5 The unit has a maximum temperature rise of 90 F for single blower units and 100 F for double blower units. 6 The unit minimum input rating is 1/25 of the Max. Input BTUH given below. 7 The fuel is natural gas. 8 The motor is a single speed motor. 9 Unit components are standard (there are exceptions to this). Model No. DFIA 109 DFIA 112 DFIA 115 DFIA 118 DFIA 120 DFIA 122 DFIA 125 DFIA 130 DFIA 215 DFIA 218 DFIA 220 DFIA 222 DFIA 225 DFIA 230 Static (in W.C.) 0-4.0 0-4.0 0-4.0 0-4.0 0-4.0 0-4.0 0-4.0 0-3.5 0-4.0 0-4.0 0-4.0 0-4.0 0-4.0 0-3.5 Max. SCFM 3,000 4,250 6,000 8,500 11,000 15,000 20,000 30,000 12,000 17,000 26,000 31,000 46,000 64,000 1 The unit SCFM is less than the Maximum SCFM given below. 2 The unit input is less than the Maximum BTUH rating given below. 3 The unit temperature rise is less than the MaximumTemperature Rise given below. 4 The fuel is natural gas. 5 The motor is a single speed motor. 6 Unit components are standard (there are exceptions to this). Model No. DFIA 109 DFIA 112 DFIA 115 DFIA 118 DFIA 120 DFIA 122 DFIA 125 DFIA 130 DFIA 215 DFIA 218 DFIA 220 DFIA 222 DFIA 225 DFIA 230 Max. SCFM 3,000 4,250 6,000 8,500 11,000 15,000 20,000 30,000 12,000 18,000 26,000 31,000 46,000 64,000 Max. BTUH 291,262 412,621 582,524 680,000 1,061,413 1,200,000 1,941,748 2,400,000 1,349,831 1,800,000 2,924,634 3,100,000 5,174,353 6,400,000 Max. Temp. Rise 100 F 100 F 100 F 100 F 100 F 100 F 100 F 100 F 100 F 100 F 100 F 100 F 100 F 100 F Max. Input. (BTUH) 325,500 461,125 651,000 922,250 1,193,500 1,627,500 2,170,000 3,255,000 1,302,000 1,844,500 2,821,000 3,363,500 4,991,000 6,944,000 These requirements were current when this catalog was printed. Please contact your Trane representative for the most current data available. 24 MUA-PRC002-EN 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. Controls discharge air temperature with instantaneous response and is ideal for industrial areas and commercial spaces such as kitchens, hotels, restaurants and boiler rooms. Optional damper opens, damper end switch closes, fan motor starter is energized, fan runs. 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. Receives electrical signal from amplifier and adjusts gas pressure to maintain desired temperature. 5 Remote Control Station Optional Control Operation Desired temperature at Á is set at the remote temperature selector À. The air sensor Á senses leaving air temperature and sends an electrical signal to the amplifier Â.The amplifier then sends an electrical signal to the modulator/regulator valve Ã, which adjusts gas pressure to the burner, maintaining the desired temperature at Á. Control Sequence with Fan and Heat Switches Fan and heat switches are included when a remote control station is ordered as an option. The freeze-stat will stop the fan if the discharge leaving air temperature is below 45 F, three minutes after the fan is turned on. Fan Switch Off Optional damper closes, damper end switch opens, fan motor starter is deenergized, fan is off. Heat Switch On If the fan switch is on, and the air flow switch closes, power is applied to the flame failure safeguard relay to begin predetermined ignition sequence. Note:The fan switch must be on, or the burner will not light, even if the heat switch is on. Heat Switch Off Heat is off. MUA-PRC002-EN 25 Controls System 44 — Space Temperature Control (1) (2) (3) (4) Optional (5) Component Description System 44 Applications Fan Switch On 1 Selectrastat™ Mounted on remote control station in heated area where temperature is sensed.Temperature range 55 F to 90 F. Provides space temperature control electronically and is ideal for commercial and industrial buildings. Optional damper opens, damper end switch closes, fan motor starter is energized, fan runs. Temperature Control Operation The freeze-stat will stop the fan if the discharge leaving air temperature is below 45 F, three minutes after the fan is turned on. 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. Receives electrical signal from amplifier and adjusts gas pressure to maintain desired temperature. 5 Remote Control Station Optional 26 Desired temperature at (1) is set at the Selectrastat on the remote control station.The Selectrastat controls the discharge air temperature as long as this temperature remains within preset maximum and minimum limits. If the discharge air temperature approaches either of the set limits, the discharge air monitor (2) will signal the amplifier (3), which will adjust the discharge air temperature to a higher or lower level via the modulator/regulator valve (4). When the space temperature approaches the assigned setting, the Selectrastat resumes control. Control Sequence with Fan and Heat Switches Fan and heat switches are included when the remote control station is ordered as an option. Fan Switch Off Optional damper closes, damper end switch opens, fan motor starter is deenergized, fan is off. Heat Switch On If the fan switch is on, and the air flow switch closes, power is applied to the flame failure safeguard relay to begin predetermined ignition sequence. Note: The fan switch must be on, or the burner will not light, even if the heat switch is on. Heat Switch Off — Heat is off. MUA-PRC002-EN 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 4.0 6.6 10.0 12.6 20.3 25.0 29.5 35.5 47.8 60.0 72.5 Energy-Effic. ODP 1800 RPM 3-Phase 208 230 460 NA NA NA 3.1 2.7 1.4 4.5 3.9 2.0 6.0 5.2 2.6 8.7 7.8 3.9 13.8 12.0 6.0 22.5 19.6 9.8 28.0 24.4 12.2 42.1 36.6 18.3 55.2 48.0 24.0 67.3 57.0 28.5 81.0 69.0 34.5 NA 92.0 46.0 NA 116.0 58.0 NA 144.0 72.0 TEFC 1800 RPM 3-Phase 208 230 3.2 3.0 3.6 2.8 5.0 4.2 6.5 5.6 8.5 8.2 15.0 13.4 21.5 19.2 28.0 25.2 NA 38.8 NA 48.0 NA 60.0 NA 76.0 NA 94.0 NA 120.0 NA 140.0 460 1.5 1.4 2.1 2.8 4.1 6.7 9.6 12.6 19.4 24.0 30.0 38.0 47.0 60.0 70.0 Energy-Effic. TEFC 1800 RPM 3-Phase 208 230 460 NA NA NA 3.1 2.7 1.35 4.5 3.9 1.95 6.1 5.3 2.65 8.8 7.6 3.8 14.2 12.4 6.2 21.4 18.6 9.3 29.0 25.0 12.5 41.2 36.6 18.3 53.8 49.0 24.5 63.5 57.0 28.5 79.8 69.0 34.5 NA 92.0 46.0 NA 116.0 58.0 NA 142.0 71.0 Notes: NA = Not Available FLA based on NEC ratings Table EP-2— Motor Electrical Data — Two-Speed Motor HP ¾ 1 1½ 2 3 5 7½ 10 15 20 25 30 40 50 60 208 NA 3.5/1.5 5.0/2.1 6.2/2.6 9.1/3.3 14.7/5.2 24.0/10.0 29.5/11.3 43.0/15.2 56.0/20.0 NA NA NA NA NA 2-Speed/1-Winding 1800/900 RPM 3-Phase 230 NA 3.4/1.6 4.8/2.1 6.4/2.7 8.3/3.3 13.4/5.1 24.5/11.0 30.0/12.4 40.0/14.0 54.0/21.0 NA NA NA NA NA 460 NA 1.8/.75 2.25/.95 3.0/1.3 4.9/1.9 7.0/2.7 10.5/4.2 13.0/5.5 19.4/7.2 26.0/10.0 31.0/10.0 36.6/12.4 50.0/16.5 59.0/21.0 NA 208 NA 3.2/1.8 5.0/2.9 6.1/3.5 9.0/4.8 16.9/9.7 22.0/12.3 30.0/17.0 47.0/22.0 56.0/29.0 NA NA NA NA NA 2-Speed/2-Winding 1800/1200 RPM 3-Phase 230 NA 3.4/2.2 4.9/2.8 5.9/3.8 8.4/4.8 15.5/10.2 19.5/12.3 28.0/17.5 54.0/21.0 51.0/27.0 NA NA NA NA NA 460 NA 1.7/1.1 2.4/1.4 3.4/2.1 4.6/2.6 7.1/4.8 10.0/6.0 13.5/7.5 19.0/11.0 24.0/12.0 30.0/17.0 38.0/18.0 48.0/24.0 59.0/30.0 NA Notes: NA = Not Available FLA based on NEC ratings MUA-PRC002-EN 27 Dimension and Weights Horizontal Arrangement — Single Blower 109 112 115 118 120 122 125 130 Table DW-1 Model 109 112 115 118 120 122 125 130 A 2' 5" 2' 5" 3' 1¼" 3' 1¼" 4' 6" 4' 6" 5' 6" 5' 6" B 3' 9" 3' 9" 4' 3" 4' 3" 5' 0" 5' 0" 6' 0" 6' 0" C 2' 9" 2' 9" 3' 7" 3' 7" 4' 4" 4' 4" 5' 0" 5' 0" D 1113/16" 1' 1313/16" 1' 613/16" 1' 915/16" 2' 15/16" 2' 37/16" 2' 73/8" 3' 7/8" E 10¼" 1' 17/16" 1' 47/8" 1' 67/8" 2' ¾" 2' 3¼" 2' 7¼" 3' ¾" F 1' 49/16" 1' 29/16" 1' 41/16" 1' 2½" 1' 5½" 1' 4¼" 1' 85/8" 1' 59/16" H 8 ¼" 8 ¼" 1' 2¼" 1' 2¼" 1' 2¼" 1' 2¼" 1' 8¼" 1' 8¼" J 9 7/8" 9 7/8" 6 7/8" 6 7/8" 6 7/8" 6 7/8" 3 7/8" 3 7/8" K 7 ½" 7 ½" 10 ½" 10 ½" 6" 6" 6" 6" L 2' 6" 2' 6" 2' 6" 2' 6" 4' 4' 5' 5' Access Door Dimensions 1' 8 ½" x 1' 8 ¾" 1' 8 ½" x 1' 8 ¾" 2' 4 ¾" x 1 '8 ¾" 2' 4 ¾" x 1 '8 ¾" 3' 10 ¼" x 1 '8 ¾" 3' 10 ¼" x 1 '8 ¾" 4' 9 ½" x 1 '8 ¾" 4' 9 ½" x 1 '8 ¾" Notes: 1. To permit blower shaft replacement, the side opposite the controls should have clearance equal to the unit width. 2. Minimum of 3’ for serviceability clearance. 28 MUA-PRC002-EN Dimension and Weights Horizontal Arrangement — Double Blower 215 218 220 222 225 230 Table DW-2 Model 215 218 220 222 225 230 A 3' 1¼" 3' 1¼" 4' 6" 4' 6" 5' 6" 5' 6" B 7' 9" 7' 9" 10' 0" 10' 0" 12' 0" 12' 0" C 3' 7" 3' 7" 4' 4" 4' 4" 5' 0" 5' 0" D 1' 613/16" 1' 915/16" 2' 15/16" 2' 37/16" 2' 73/8" 3' 7/8" E 1' 37/8" 1' 67/8" 2' ¾" 2' 3¼" 2' 7¼" 3¾" F 1' 4½" 1' 1¼" 1' 85/16" 1' 513/16" 1' 913/16" 1' 65/8" G 1' 10½" 1' 10½" 2' 55/8" 2' 55/8" 3' 15/8" 2' 9" H 1' 2¼" 1' 2¼" 1' 2¼" 1' 2¼" 1' 8¼" 1' 8¼" J 6 7/8" 6 7/8" 6 7/8" 6 7/8" 37/8" 37/8" K 1' 4½" 1' 4½" 1' 3" 1' 3" 1' 1' L 5' 5' 7' 6" 7' 6" 10' 10' Access Door Dimensions 2' 4 ¾" x 1 '8 ¾" 2' 4 ¾" x 1 '8 ¾" 3' 10 ¼" x 1 '8 ¾" 3' 10 ¼" x 1 '8 ¾" 4' 9 ½" x 1 '8 ¾" 4' 9 ½" x 1 '8 ¾" Notes: 1. To permit blower shaft replacement, the side opposite the controls should have clearance equal to the unit width. 2. Minimum of 3’ for serviceability clearance. MUA-PRC002-EN 29 Dimension and Weights Horizontal Arrangement — Single Blower With Mixing Box 109 112 115 118 120 122 125 130 Table DW-3 Model 109 112 115 118 120 122 125 130 A 2' 5" 2' 5" 3' 1¼" 3' 1¼" 4' 6" 4' 6" 5' 6" 5' 6" B 3' 9" 3' 9" 4' 3" 4' 3" 5' 0" 5' 0" 6' 0" 6' 0" C 2' 9" 2' 9" 3' 7" 3' 7" 4' 4" 4' 4" 5' 0" 5' 0" D 1113/16" 1' 313/16" 1' 613/16" 1' 915/16" 2' 15/16" 2' 37/16" 2' 73/8" 3' 7/8" E 10¼" 1' 17/16" 1' 47/8" 1' 67/8" 2' ¾" 2' 3¼" 2' 7¼" 3' ¾" F 1' 49/16" 1' 29/16" 1' 41/16" 1' 2½" 1' 5½" 1' 4¼" 1' 85/8" 1' 59/16" H 2' ¾" 2' ¾" 3' 3¾" 3' 3¾" 4' ¾" 4' ¾" 4' ¾" 4' ¾" J 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" K 5 ½" 5 ½" 5 ½" 5 ½" 5 ½" 5 ½" 5 ½" 5 ½" L 2' 10" 2' 10" 3' 4" 3' 4" 4' 1" 4' 1" 5' 1" 5' 1" W 2' 4" 2' 4" 3' 7" 3' 7" 4' 4" 4' 4" 4' 4" 4' 4" Access Door Dimensions 1' 8 ½" x 1' 8 ¾" 1' 8 ½" x 1' 8 ¾" 2' 4 ¾" x 1 '8 ¾" 2' 4 ¾" x 1 '8 ¾" 3' 10 ¼" x 1 '8 ¾" 3' 10 ¼" x 1 '8 ¾" 4' 9 ½" x 1 '8 ¾" 4' 9 ½" x 1 '8 ¾" Notes: 1. To permit blower shaft replacement, the side opposite the controls should have clearance equal to the unit width. 2. Minimum of 3’ for serviceability clearance. 30 MUA-PRC002-EN Dimension and Weights Horizontal Arrangement — Double Blower With Mixing Box 215 218 220 222 225 230 Table DW-4 Model 215 218 220 222 225 230 A 3' 1¼" 3' 1¼" 4' 6" 4' 6" 5' 6" 5' 6" B 7' 9" 7' 9" 10' 0" 10' 0" 12' 0" 12' 0" C 3' 7" 3' 7" 4' 4" 4' 4" 5' 0" 5' 0" D 1' 613/16" 1' 915/16" 2' 15/16" 2' 37/16" 2' 73/8" 3' 7/8" E 1' 37/8" 1' 67/8" 2' ¾" 2' 3¼" 2' 7¼" 3¾" F 1' 4½" 1' 1¼" 1' 85/16" 1' 513/16" 1' 913/16" 1' 65/8" G 1' 10½" 1' 10½" 2' 55/8" 2' 55/8" 3' 15/8" 2' 9" H 3' 3¾" 3' 3¾" 4' ¾" 4' ¾" 4' ¾" 4' ¾" J 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" 1 5/8" K 5 ½" 5 ½" 5 ½" 5 ½" 5 ½" 5 ½" L 6' 10" 6' 10" 9' 1" 9' 1" 11' 1" 11' 1" W 3' 7" 3' 7" 4' 4" 4' 4" 4' 4" 4' 4" Access Door Dimensions 2' 4 ¾" x 1 '8 ¾" 2' 4 ¾" x 1 '8 ¾" 3' 10 ¼" x 1 '8 ¾" 3' 10 ¼" x 1 '8 ¾" 4' 9 ½" x 1 '8 ¾" 4' 9 ½" x 1 '8 ¾" Notes: 1. To permit blower shaft replacement, the side opposite the controls should have clearance equal to the unit width. 2. Minimum of 3’ for serviceability clearance. MUA-PRC002-EN 31 Dimension and Weights Table DW-5 Model 109 112 115 118 120 122 125 130 215 218 220 222 225 230 A 3' 9" 3' 9" 4' 3" 4' 3" 5' 5' 6' 6' 7' 9" 7' 9" 10' 10' 12' 12' B 2' 5" 2' 5" 3' 1¼" 3' 1¼" 4' 6" 4' 6" 5' 6" 5' 6" 3' 1¼" 3' 1¼" 4' 6" 4' 6" 5' 6" 5' 6" C 11' 7" 11' 7" 12' 5" 12' 5" 14' 2" 14' 2" 14' 10" 14' 10" 12' 5" 12' 5" 14' 2" 14' 2" 14' 10" 14' 10" D 2' 9" 2' 9" 3' 7" 3' 7" 4' 4" 4' 4" 5' 5' 3' 7" 3' 7" 4' 4" 4' 4" 5' 5' E 3' 3' 3' 3' 4' 4' 4' 4' 3' 3' 4' 4' 4' 4' F 2' 8" 2' 8" 2' 8" 2' 8" 3' 8" 3' 8" 3' 8" 3' 8" 2' 8" 2' 8" 3' 8" 3' 8" 3' 8" 3' 8" Notes: 1. Unit suitable for indoor application. 2. Factory furnished support stand shipped separate for field mounting by others. 3. Unit to have v-bank shipped mounted to burner. 4. Unit to have inlet damper mounted in support stand. 5. Refer to DFIA catalog for supply duct dimensions and unit weights. 6. Unit shown is a two blower unit. Single blower unit is similar. 7. V-bank and inlet damper shown are optional components. 8. Unit to have burner section shipped separate for field mounting by others. 32 MUA-PRC002-EN Dimension and Weights Accessories Dimensional Data Table DW-6 Model 109-112 115-118 120-122 125-130 215-218 220-222 225-230 MUA-PRC002-EN A 2' 5" 3' 1¼" 4' 6" 5' 6" 3' 1¼" 4' 6" 5' 6" B 3' 9" 4' 3" 5' 0" 6' 0" 7' 9" 10' 0" 12' 0" C 1' 5¼" 1' 11" 2' 4½" 3' 41/8" 5' 7¾" 7' 1¾" 9' 1/8" D 1' 23/8" 1' 83/8" 1' 83/8" 3' 3¼" 1' 83/8" 3' 3¼" 3' 3¼" E 2' 5" 3' 7" 4' 4" 4' 4" 3' 7" 4' 4" 4' 4" Filters — Qty/Size (4) 20" x 20" x 2" (9) 20" x 16" x 2" (10) 20" x 25" x 2" (24) 20" x 16" x 2" (18) 20" x 15" x 2" (35) 20" x 16" x 2" (42) 20" x 20" x 2" 33 Weights Approximate Weights Table W-1 Unit Size 109 112 115 118 120 122 125 130 215 218 220 222 225 230 Blower Section 350 350 535 535 916 916 1262 1262 912 912 1501 1501 2117 2117 Vertical Support Stand 180 180 210 210 420 420 570 570 500 500 625 625 845 845 Inlet Hood 140 140 150 150 183 183 216 216 224 224 290 290 350 350 Inlet1 Damper 55 55 70 70 120 120 155 155 125 125 233 233 340 340 V-Bank1 Filter 165 165 185 185 275 275 310 310 275 275 410 410 500 500 Burner Section 260 260 375 375 550 550 700 700 510 510 735 735 1010 1010 Return1 Air 104 104 116 116 151 151 208 208 141 141 226 226 302 302 Discharge Louver 70 70 80 80 110 110 125 125 150 150 215 215 230 230 A 149 149 253 253 439 439 590 590 438 438 697 697 953 953 B 67 67 94 94 159 159 224 224 158 158 268 268 388 388 C 67 67 94 94 159 159 224 224 158 158 268 268 388 388 D 67 67 94 94 159 159 224 224 158 158 268 268 388 388 Notes: 1. When a mixing box option is ordered — these three accessory weights need to be totaled. *Contact factory for shipping weights on models exceeding 50,000 cfm. 34 MUA-PRC002-EN Mechanical Specifications General Burner Section Controls BASIC unit is factory assembled, wired, and test fired. DEPENDING UPON OPTIONS, UNIT MAY SHIP IN SECTIONS DUE TO PHYSICAL SIZE OF EQUIPMENT. Designed for indoor mounting only. Units are available for operation on either natural or LP (Propane) gas. Burner section shall be constructed of 16-gauge galvanized steel. Includes a cabinet only to house a line burner. Unit controls shall consist of a spark ignition system with flame rod sensing of flame, high temperature limit switch set at 185 degrees, timed freeze protection (factory set at 45 with a threeminute time delay) flame safeguard with alarm contacts, ignition transformer, air proving differential switch and a series 14 or 44 modulating control system. Casing Blower section casings are fabricated of die formed 16-gauge, galvanized steel. Includes cabinet designed for indoor application, shaft and fan(s). Basic air handler also requires motor, starter and drive selection. All casings shall be air tight. Complete access shall be provided to all components through gasketed access panels and doors.This includes the blower, burner and electrical components. Fans Supply fans shall be double width, double inlet centrifugal type with FC fan wheels. Fans are tested in accordance with AMCA 210.The fan or fans shall be mounted on a solid shaft for single blowers and a hollow shaft for double blowers.The shaft shall be designed for a maximum operating speed not to exceed 75 percent of its first critical speed. Bearings are to be external heavy duty industrial prelubricated type. 100,000 hour life of the bearings. Blowers to be driven by a V-belt package sized with a capacity of 25 percent greater than the motor horsepower. Multiple belt applications will be matched sets. Drives are adjustable pitched diameter type up through 7 ½ hp, fixed on motors over 7 ½ hp. Motors to be externally mounted on an adjustable slide base. Belt guard shall be provided. MUA-PRC002-EN Line Burner Line burner section shall contain a Maxon NP burner constructed of rust resistant cast iron bodies (which serve as the gas manifold) drilled to discharge the fuel between diverging stainless steel mixing plates.The entire burner assembly is mounted directly in the air stream being heated.The fresh air stream passes through the mixing plates and mixes with the fuel as combustion air: thus all available heat from the gaseous fuel is released directly into the air stream. Air velocities across the burner assemblies are established by the use of profile plates. Manifold is located outside of air stream. An observation port shall be located to provide view of pilot and main flame. Units shall be supplied with a wide range burner with a modulating turndown ratio of 25 to 1. Adjustable profile plates shall be provided and sized to maintain the required velocity across the line burner.The operation of the burner shall be programmed through the flame safeguard with timed prepurge and flame sensing. Control Enclosure Units shall be provided with a control compartment. All controls mounted within this compartment are to be wired to a numbered terminal strip. All wiring is to be color coded and in accordance with NEC. A circuit diagram of the approved electrical drawing shall be provided with the unit. All electrical components shall bear the UL label. Unit shall also contain main fan starter, overloads and control circuit fuses. Gas Train Approvals The standard gas train consists of a main manual gas shutoff valve, a motorized electric main gas valve, the Maxitrol modulating gas valve, a manual pilot gas shutoff valve, a manual pilot gas pressure regulator, a pilot gas valve, an orificed needle valve and auxiliary gas valve. The Factory Mutual (FM) gas train consists of a manual main gas shutoff valve, a motorized electric main gas valve, the Maxitrol modulating gas valve, a manual pilot gas shut-off valve, a manual pilot gas pressure regulator, a pilot gas valve, an orificed needle valve, a high/low gas pressure switch, a manual auxiliary gas shutoff valve, and an auxiliary gas valve. (Optional) The Industrial Risk Insurers (IRI) gas train consists of a manual main gas shutoff valve, a motorized electric main gas valve, the Maxitrol modulating gas valve, a manual pilot gas shutoff valve, a manual pilot gas pressure regulator, a pilot gas valve, an orificed needle valve, a high/low gas pressure switch, a manual auxiliary gas shutoff valve, a normally open vent valve, and an auxiliary gas valve. (Optional) Timed Freeze Protection Consists of an on-off discharge duct stat and timer. Prevents continued discharge of cold air if burner is not functioning. Factory set at 45 degrees. If the discharge air temperature is below 45 deg., 3 minutes after burner is first called to come on, the unit is shut off.The timers purpose is to keep the thermostat from shutting off during the purge cycle. 35 Options Motorized Return Air Damper Motorized 75/25 Damper Purpose To provide a way for recirculating return air. Purpose To provide a way for recirculating return air and letting building pressure control the amount of air which is recirculated. 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. Code requires that outside ventilation air be provided to the space in the amount of 4 cfm per 1 MBh of burner rated input. All units are provided with a means that will allow the customer to interlock OA fans when the amount of OA provided by the unit is not sufficient to meet the 4 cfm per 1 MBh requirement. When the two position switch is in the “OA” position, the RA damper is closed, and 100 percent of supply air is OA. Note:This option cannot be used with a two speed fan motor. Note:This option can be used with either the Motorized Inlet Damper option or the Motorized Outlet Damper option. Option Includes: • Return air damper •Two position damper motor • Damper switch 36 Operation If building pressure is less than desired, the RA damper modulates to a more closed position and the interlocked burner profile damper modulates to a more open position. More OA is brought into building. If building pressure is greater than desired, the RA damper modulates to a more open position and the interlocked burner profile damper modulates to a more closed position. Less OA is brought into building. At no time will the unit provide less than 25 percent OA to the building. In general terms, the minimum OA is 25 percent; however, there are cases where it can be as high as 40-50 percent, depending upon unit size, burner size, gas train type and gas pressure. Code requires that outside ventilation air be provided to the space in the amount of 4 cfm per 1 MBh of burner rated input. All units are provided with a means that will allow the customer to interlock OA fans when the amount of OA provided by the unit is not sufficient to meet the 4 cfm per 1 MBh requirement. Note:This option cannot be used with a two speed fan motor. Note:This option can be used with either the Motorized Inlet Damper option or the Motorized Outlet Damper option. Option Includes: • Return air section with damper • Burner profile damper • Linkage • Modulating damper motor(s) • Photohelic differential pressure gauge MUA-PRC002-EN Options Mixing Box — Temperature Control Mixing Box — Manual Control Purpose To provide a way for recirculating return air and letting mixed air temperature determine the amount of OA/RA. Purpose To provide a way for recirculating return air and using manual control to 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. Operation A manual potentiometer located at the remote control station determines the OA/RA setting.The minimum OA damper position is factory set with a potentiometer.The minimum OA damper opening is set at 4 cfm per 1 MBh of burner rated input, or 25 percent supply air, whichever is larger. Option Includes: • Inlet damper • Return air section with damper • Modulating damper motor(s) • V-bank filter with throwaway filters • Manual potentiometer (Note: Remote control station not included) 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. If temperature at sensor is warmer than setting, OA damper modulates to a more open position, and RA damper modulates to a more closed position. The minimum OA damper position is factory set with a potentiometer.The minimum OA damper position is set at 4 cfm per 1 MBh of burner rated input, or 25 percent supply air, whichever is larger. The desired temperature at the temperature sensor is set at the control cabinet at the unit. Option Includes: • Inlet damper • Return air section with damper • Modulating damper motor(s) • V-bank filter with throwaway filters •Temperature sensor 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. The minimum OA damper position is factory set with a potentiometer.The minimum OA damper position is set at 4 cfm per 1 MBh of burner rated input, or 25 percent supply air, whichever is larger. The desired pressure differential is set at the photohelic. Option Includes: • Inlet damper • Return air section with damper • V-bank filter with throwaway filters • Modulating damper motor(s) • Photohelic differential pressure gauge Motorized Inlet Damper Purpose To provide a shut-off damper. Operation When the fan switch is on, the inlet damper begins to open. As the inlet 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 inlet damper closes. Option Includes: • Damper •Two position damper motor(s) with built-in end switch and spring return • Linkage If building pressure is greater than desired, the RA damper modulates to a more open position and the OA damper modulates to a more closed position. Less OA is brought into building. MUA-PRC002-EN 37 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. The auxiliary contacts on the fan motor starter are the contacts which are used as the exhaust interlock.The auxiliary contacts are wired to the numbered terminal strip.The customer can wire the indicated terminals into the control circuit of the exhaust fan. Note: If the customer wants the exhaust fan to turn the heating unit “on,” he/she has to provide a pair of contacts that will close when the exhaust fan is “on.” Interlocking Relay The interlocking relay is two pair of contacts, one normally open and the other normally closed. The contacts switch positions when the unit is “on.” The contacts are wired to the numbered terminal strip. The customer can wire a wide range of devices to the interlocking relay by wiring to the indicated terminals. Seven-Day Timeclock/ Night Setback Thermostat 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.” If the temperature rose above the setting, the unit would go “off.” Inlet On-Off Duct Stat Automatically turns burner off when inlet air temperature equals setting of control. Works as a lockout for the burner. Example: If we want the burner to be “off” if the entering air temperature is 65 degrees, the inlet on-off duct stat would be set at 65 degrees. Without the inlet on-off duct stat, if the fan switch and heat switch are both “on,” no matter how warm the incoming air, the burner will go as low as low fire, but will not go “off.” UV Flame Sensor (UV MiniPeeper) Flame sensor checks to make sure the pilot flame has ignited before gas is sent to the main burner. Operates by sensing the light of the pilot flame. Series 14 — Constant Discharge Temperature The constant discharge temperature, gas modulating control system consists of the Maxitrol electronic gas modulating system (55 to 90 F range), which includes a discharge air sensor located in the blower discharge, a modulator/regulator valve mounted in the gas piping manifold, an amplifier installed in the electrical control panel, a 115 to 24 volt transformer, and a remote temperature selector. Series 44 — Space Temperature Control The space temperature control, gas modulating control system consists of the Maxitrol electronic gas modulating system, which includes a Series 44 discharge air sensor (55 to 90 F range) mounted in the blower discharge, a modulator regulator valve mounted in the gas piping manifold, an amplifier installed in the electric control panel, a 115 to 24 volt transformer, and a Selectrastat mounted in the area where the temperature is to be sensed. If the flame sensor does not sense the pilot flame, the unit shuts down (fan and burner go off) and the flame failure light on the optional remote panel goes on. The seven-day timeclock is used primarily for either one of the following: The unit has to be reset by pushing the reset button on the burner relay. 1 Start and stop the unit at preset times Example: A building is occupied at 8:00 AM. At 4:30 PM, people leave the building.The timeclock could be set to turn the unit on at 7:30 AM and off at 5:00 PM. Differences between UV Flame Sensor and Flame Rod: 2 The timeclock can be used with an on-off night setback thermostat (NSB thermostat).The timeclock and NSB thermostat would be wired so that during the night, the NSB thermostat would turn the unit on and off. If condensation forms on the flame rod while the unit is off, it may give a false signal and prevent the unit from coming on. The wet flame rod does not sense the pilot flame and shuts the unit down. This nuisance tripping can be avoided with the UV flame sensor. 38 Optional Gas Controls Both are used for the same purpose — to check if the pilot flame is on. The flame rod is “standard.” The UV sensor needs to be ordered as an option. MUA-PRC002-EN 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 Single Phase Optional 115V motors are available in ¾ to 3 hp models. Optional 208V motors are available in ¾ to 7 ½ hp models. Optional 230V motors are available in ¾ to 10 hp models. All motors have rigid base construction and ball bearings. Class A insulation is on all motors up to and including 3 hp models. Class B insulation is on 5 hp and above models. Three-Phase Optional 208, 230, 460V available in 1 to 60 hp models. All models have rigid base construction and ball bearings. Class B insulation is on all three-phase motors. Energy Efficient ODP 60 Hz/1800 Rp Three-Phase Only Optional 208V motors are available in 1 to 30 hp models. 230 and 460V motors are available in 1 to 60 hp models. All motors have rigid base construction and ball bearings. Class B insulation is on all motors. Totally Enclosed Motor 60 Hz/1800 Rpm Three-Phase Only Optional 208V motors are available in ¾ to 20 hp models. Optional 230 and 460V motors are available in ¾ to 60 hp models. All motors have rigid base construction and ball bearings. Energy Efficient TEFC 60 Hz/1800 Rpm Three-Phase Only Optional 208V motors are available in 1 to 30 hp models. 230 and 460V motors are available in 1 to 60 hp models. All motors have rigid base construction and ball bearings. Class B insulation is on all motors. MUA-PRC002-EN 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. Two-Speed/Two Winding Motors 60 Hz/1800/1200 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. Additional Options* Inlet Hood and Birdscreen Hood constructed of 18-gauge galvanized steel. Birdscreen is 18-gauge galvanized steel with one-inch square openings. V-Bank Filter Section Not required when a mixing box is specified. Constructed of 18-gauge galvanized steel. Dampers and Mixing Box Motorized Return Air Damper This option provides a way to recirculate air, with the return air opening downstream of the burner.This option includes return air damper, a twoposition damper motor, linkage and damper switch. It is not available with two-speed motors. Mixing Box — Temperature Control This option provides a way for recirculating return air and allows mixed air temperature to determine the amount of OA/RA.This option includes mixing box with filter section, dampers, damper actuator(s), and damper controls. Mixing Box — Building Pressure Control This option provides a way for recirculating return air and allows building pressure to control the amount of air which is recirculated. This option includes a mixing box with filter section, dampers, damper actuator(s), and damper controls (including a photohelic differential pressure gauge). Mixing Box — Manual Control This option provides a way for recirculating return air and using manual control to determine the amount of OA/ RA.This option includes a mixing box with filter section, dampers, damper actuator(s), and a manual potentiometer. Motorized Inlet Damper This option provides a shutoff damper. This option includes an outside air damper, damper motor with built-in end switch, and linkage. It is not available with a mixing box. *Based on unit design, some options can ship factory installed or field installed. Contact the factory for verification. Motorized 75/25 Damper This option provides a way for recirculating return air and allows building pressure to control the amount of air that is recirculated.This option includes a return air damper, burner profile plate damper, damper linkage, and modulating pressure controller. It is not available with two-speed motors. 39 Options 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. Insulation on Blower Section Insulation on Burner Section Insulation on Return Air Section Insulation on Filter Section Controls Opposite from Standard Applicable only to horizontal configurations. Locates controls, gas piping and fan motor on fan side of the unit. Inlet On-Off Duct Stat This automatically turns the burner off when inlet air temperature equals desired discharge air temperature. It works as a lockout for the burner. Temperature range of 25 to 225 SPDT. 115V Duplex Receptacle This option includes a transformer and disconnect switch for the receptacle. Components are mounted in the gas piping manifold. Circuit Analyzer Provides indicator lights for maintenance troubleshooting. If the unit is not functioning properly, the service person will want to know which circuits are open and which are closed. The circuit analyzer will tell the service person, at a glance, the status (open or closed) of the different circuits. If an indicating light is lit, the circuit is in its correct operating mode. It mounts on the control panel of the unit.The number of lights and functions depends on the control options of the unit. UV Flame Sensor The flame sensor checks to make sure the pilot flame has ignited before gas is sent to the main burner. It operates by sensing the light of the pilot flame. Clogged Filter Switch This option includes a pressure sensing switch which senses the pressure drop across the filters. When the pressure drop reaches the setpoint, the switch trips and lights the clogged filter light. It is not required when City of Chicago controls are ordered. Exhaust Fan Interlock This option includes a pilot duty rated normally open contact on the main supply fan motor starter that will close simultaneously with the starter (10 amp contacts). Interlocking Relay This option is energized by an auxiliary contact on the supply fan motor starter that can be used for additional equipment that may need to run when the supply fan is running (12 amp contacts). City of Chicago Controls This option includes an access door interlock switch, an alarm horn with silence switch, low temperature limit, and a clogged filter switch. Painted Blower Section Painted Burner Section Painted Return Air Section Painted Filter Section 40 Field Installed Accessories Vibration Feet Rubber-in-shear vibration isolators cannot be ordered with a roof curb – they ship unmounted. Vibration Feet — Blower Section Vibration Feet — Burner Section Vibration Feet — Return Air Section Vibration Feet — Filter Section Vibration Hangers Option includes rubber-in-shear vibration isolators, shipped unmounted. Vibration Hangers — Blower Section Vibration Hangers — Burner Section Vibration Hangers — Return Air Section Vibration Hangers — Filter Section Seven-Day Time Clock This option includes a Paragon sevenday general purpose time control with a four-pole switch. 100 DBL Alarm Horn and Silencing Switch The alarm horn and silencing switch are field-wired so that if the pilot flame does not ignite, the alarm sounds. To silence the alarm, the push button silencing switch is pushed. Remote Control Station Option includes fan and heat switches, burner on light, alarm light, and Maxitrol Selector or Selectrastat. On-Off Night Setback Thermostat This option will shut unit off when space temperature is above setpoint.This is a 115 V thermostat with a temperature range of 50 to 80 F. Option is normally used together with the seven-day timeclock option. High Gas Pressure Regulator Over 10 Psig Specify inlet pressure at the jobsite.This is required for selection of the regulator. Discharge Louver — Horizontal Vanes Adjustable Painted Discharge Louver MUA-PRC002-EN MUA-PRC002-EN 41 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-PRC002-EN File Number PL-UN-MUA-000-PRC002-09-00 Supersedes MUA-D-1 1/95 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.
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File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : Yes Encryption : Standard V1.2 (40-bit) User Access : Print, Copy, Annotate, Fill forms, Extract, Assemble, Print high-res Create Date : 2000:08:21 15:04:39 Producer : Acrobat Distiller 4.0 for Windows Modify Date : 2000:09:05 16:05:33-05:00 Title : Make-Up Air Heaters Direct Fired Indoor/Modular Model DFIA PDF Catalog MUA-PRC002-EN Subject : Make-Up Air Heaters Direct Fired Indoor/Modular Model DFIA Author : Commercial Order Acquisition Keywords : DFIA, Direct Fired, Indoor, Make-Up Air Heaters, MUA-PRC002-EN Page Count : 42 Page Mode : UseOutlines Page Layout : OneColumnEXIF Metadata provided by EXIF.tools