Trane DFOA User Manual

Make-Up Air Units

Dir ect-Fired Outdoor Model DFO A

September 2000

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Introduction

Why Use Trane Make-Up Air Units?

To help relieve negative pressure inside commercial and industrial facilities, such as factories, garages, pac king 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 of fer excellent variety when selecting a unit that will fill both the owner’s needs and those of the specifying engineer. These units are flexible in that they can be located indoors or outdoors, and either curb or grade mounted.

All standard units include the necessary controls for operation, such as a flame safeguard, an air proving differential switch, a high temperature limit switc h, and an ignition transformer. Component parts are of the highest quality . Eac h unit has overlapping, fail-safe protection devices to handle failures should they occur. Eac h unit is factory tested before it ships, and is designed to provide years of reliable, low maintenance operation.

Units are built with UL approved components, where applicable. Special gas controls can be furnished to comply with FM or IRI requirements.

©American Standard Inc. 2000

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Contents

Introduction Featur es and Benefits

Unit Configurations

Application Considerations

Model Number Description

P erformance Data

Gas Piping

Controls Electric P o wer Dimension and Weights Mechanical Specifications

Options Accessories

2 4

6 7

8 9

16 18

19 36

37 43

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Supply air intake view showing inlet hood

and birdscreen

Features and Benefits

Gas burner section

Optional inlet damper wtih V-bank filter

Factory assembled g as manifold

compartment

Access compartment t o contr ol panel and

fan motor.

Note: Fan motor panel has been removed for photograph.

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Features and Benefits

Basic Unit

Feature:

Casing with galvanized finish

Benefit:

Rust problem is greatly reduced

Feature:

Water tight construction

Benefit:

Designed for indoor or outdoor mounting

Feature:

Access doors are hinge mounted with industrial type hardware

Benefit:

Provides simple access to service compartments without removing sheet metal screws and panels

Feature:

Adjustable motor mount

Benefit:

Belt tension can be field adjusted for maximum belt life and for motor speed adjustment

Feature:

Basic unit is factory assembled and wired

Benefit:

Reduces field installation cost

Gas-Fired Unit

Feature:

Many standard, natural gas burning units bear the ETL label. Contact

factory for verification. Benefit:

Meets certain insurance requirements

Feature: Optional temperature control systems

available

Benefit:

Select system to satisfy application

Feature: Optional dual fuel gas manifold Benefit:

Standby flexibility in case natural gas supply is interrupted

Feature: Optional construction provides return

air cycle

Benefit:

Maximum 80 percent return air cycle results in fuel economy for pressurized heating systems and eliminates need for two-speed fan operation. Minimizes heating costs.

Feature:

All fuses factory furnished

Benefit:

Delay at start-up eliminated

Feature:

Factory tested before being shipped

Benefit:

Eliminates majority of field start-up problems caused by defective controls

Feature:

No flues or stacks are used

Benefit:

Eliminates backdraf t and dangerous contaminants from entering the space

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Horiz ontal Configurations

For all arrangements shown, the g as 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.

Unit Configurations

V er tical Configurations

For all arrangements shown, the g as piping and controls are 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.

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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 of fer the advantage of a full support system that is watertight, pro vides 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. Air will leak into the building through cracks, windows, and doors. When a negative condition exists:

Flues and stacks may experience a backdraf t and cause dangerous contaminants to remain in the occupied space. In the case of flues, the products of combustion may condense and corrode the equipment.

Under negative conditions, the exhaust system sees a greater static pressure. The capacity of each fan is reduced and this results in an inadequate removal of contaminants.

Drafts and cross-currents will increase in a negative condition, causing an uncomfortable or unhealthy work environment.

What Fuel to Use?

The most common fuel for heating make-up air is natural gas. This is because 100 percent of the energy goes into the air stream (92 percent sensible, 8 percent latent). Direct firing eliminates the need for heat exchangers or combustion chambers that can corrode or leak. Natural gas is often the least expensive fuel and is usually readily available.

Note: Select ed hor iz ontal and ver tical units are av ailable with special coil options (DX, chilled w at er, st eam or electric).

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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 = 208/60/1 D = 208/60/3 E = 230/60/3 F = 460/60/3 S = Special

Digit 9 — Fuel

N = Natural Gas P = LP Gas (Propane) S = Special

Digit 10 — Design Sequence

C = Third Design

Digit 1 1 — Gas Control Option

A = Series 14 Constant Disc harge

Temperature B = Series 44 Space T emperature Control S = Special

Digit 12 — Type Gas Tr ain Approv als

1 = Standard 3 = IRI 4= FM S = Special

Digits 13,14 — Burner Input Rating (MBh)

AA = 275 MBh Input AB = 550 MBh Input AC = 825 MBh Input AD = 990 MBh Input AE = 1 100 MBh Input

Model Number Description

D F O A 1 0 9 A N C A 1 A A B 1 2 0 0 0 A

1,2,3 4 5,6,7 8 9 10 11 12 13,14 15 16 17 18 19 20 21

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 A Y = 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 SS = Special

Digit 15 — Blower Motor HP

0 = No Selection B = ¾ HP Motor C = 1 HP Motor D = 1½ HP Motor E = 2 HP Motor F = 3 HP Motor G = 5 HP Motor H = 7½ 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 16 — Motor Speed and Starter

0 = No Selection 1 = Single Speed ODP 1800 RPM 2 = Single Speed TEFC 1800 RPM 3 = Single Speed Energy Efficient ODP

1800 RPM

4 = Single Speed Energy Efficient TEFC

1800 RPM 5 = 2S1W ODP 1800/900 RPM 6 = 2S2W ODP 1800/1200 RPM S = Special

Digit 17 — Fan Dischar ge* Horizontal Ar rangement

1 = Arrangement 1, T op 2 = Arrangement 2, Side 3 = Ar rangement 3, Bottom

*Select arrangements from page 6.

V ertical Arrang ement

4 = Arrangement 4, Side 5 = Arrangement 5, T op 6 = Arrangement 6, Side

*Select arrangements from page 6.

Digit 18 — Inlet Hood and Birdscreen

0 = None A = Inlet Hood and Birdscreen with

Permanent Filters

B = Inlet Hood and Birdscreen without

Filters

Digit 19 — V-Bank Filt er Section

0 = No Selection A = V-Bank Filter Section with Permanent

Filters

B = V-Bank Filter Section without Filters

Digit 20 — 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 21 — Miscellaneous Options

A = Controls Opposite from Standard B = Motorized Inlet Damper C = Motorized Outlet Damper D = Insulation on Basic Frame E = Insulation on Filter Section F = Internal Blower/Motor Isolation G = Extended Grease Lines H = Inlet On-Off Duct Stat K = 1 15V Duplex Service Receptacle with

Power Transformer L = Circuit Analyzer M = Painted Basic Unit and Accessories N = UV Flame Sensor P = Clogged Filter Switc h with Light Q = Exhaust Interlock R = Interlocking Relay T = City of Chicago Controls V = Omit Disconnect Switch W= High Gas Pressure Regulator 1-5 PSIG X = High Gas Pressure Regulator 5-1 0 PSIG Y = Adjustable Drive S = Special 8 = Low Gas Pressure Burner

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P erformance Data

Table PD-1 — Direct-Fir ed Outdoor Unit

Models Blower STD Air Outlet ¼” 3/8” ½” ¾” 1” 1 ¼” 1 ½” 2”

DFO Size @ 70 Velocity HP

109 1-9” 2250 2690 1 ½ 1 ½ 1 ½ 22223

112 1-12” 3750 2540 2 2 3 33335

115 1-15” 5000 2430 3 3 3 33555

118 1-18” 7500 2565 5 5 5 5 5 7 ½ 7 ½ 7 ½

215 2-15” 1 0500 2550 5 5 7 ½ 7 ½ 7 ½ 7 ½ 7 ½ —

218 2-18” 14000 2390 7 ½ 7 ½ 7 ½ 10 10 10 15 —

220 2-20” 22000 2620 15 15 1 5 15 15 20 20 20

222 2-22” 28000 2750 15 20 20 20 20 25 25 30

225 2-25” 38000 2835 20 20 20 25 25 30 30 40

230 2-30” 56000 3020 30 30 30 40 40 40 40 50

Notes: External Pressure Drop in inches of water. Add pressure drop of the optional accessories, if used, to the pressure drop of the duct work. Fresh Air Inlet Hood and Birdscreen .13” WC Fresh Air Inlet Hood With Filters .25” WC Motor Operated Inlet Damper .13” WC Motor Operated Discharge Damper .13” WC V-Bank Filter Section .25” WC Mixing Box . 40” WC

CFM FPM T otal External Static Pressure (WC)

1600 1915 ¾11 1 ———— 1800 2155 1 1 1 1 ½ 1 ½ 1 ½ — — 2000 2390 1 ½ 1 1½ 1 ½ 1 ½ 2 2 —

2500 2990 2 2 2 22333 2750 3290 2 2 2 33333 3000 3585 3 3 3 33355 3250 2180 1 ½ 2 2 23333 3500 2360 2 2 2 33335

4000 2720 3 3 3 33355 4250 2900 3 3 3 33555 45002190 223 3335—

5500 2670 3 3 3 55555 60002910 555 55557 ½

65002215 355 55557 ½ 7000 2390 5 5 5 5557 ½7 ½

8000 2740 5 5 5 7 ½ 7 ½ 7 ½ 7 ½ 7 ½ 8500 2915 5 5 7 ½ 7 ½ 7 ½ 7 ½ 7 ½ 10 9000 2190 5 5 5 5 7 ½ — — — 9500 2310 5 5 5 5 7 ½ 7 ½ — —

10000 2430 5 5 5 7 ½ 7 ½ 7 ½ 7 ½ —

11000 2670 7 ½ 7 ½ 7 ½ 7 ½ 7 ½ 7 ½ 10 10

11500 2790 7 ½ 7 ½ 7 ½ 7 ½ 7 ½ 10 10 10 12000 2910 7 ½7 ½7 ½7 ½10101015 12500 2125 7 ½ 7 ½ 7 ½ 7 ½ 7 ½ — — — 13000 2215 7 ½ 7 ½ 7 ½ 7 ½ 10 10 — —

15000 2565 7 ½ 10 10 10 10 15 15 15 16000 2740 101010 1015151515 17000 2915 101010 1515151520 18000 2140 7 ½1010 10151515— 19000 2260 10 10 10 10 15 15 15 — 20000 2380 10 10 10 15 15 15 15 20 21000 2500 101515 1515152020

23000 2740 15 15 15 15 15 20 20 20 24000 2860 15 15 15 1 5 20 20 20 25 25000 2980 15 15 15 20 20 20 20 25 26000 3100 15 20 20 20 20 20 25 25 25000 2450 15 15 15 1 5 20 20 20 25 26000 2550 15 15 15 20 20 20 20 25 27000 2650 15 15 15 20 20 20 20 25

29000 2850 20 20 20 20 25 25 25 30 30000 2950 20 20 20 20 25 25 25 30 31000 3050 20 20 20 25 25 25 30 30 30000 2235 15 15 15 15 20 20 — — 32000 2385 15 15 15 20 20 20 25 — 34000 2535 15 20 20 20 20 25 25 30 36000 2685 20 20 20 20 25 25 30 30

40000 2985 20 25 25 25 30 30 30 40 42000 3135 25 25 25 30 30 40 40 40 44000 3285 25 30 30 30 40 40 40 40 46000 3430 30 30 30 40 40 40 40 50 44000 2365 20 20 20 25 25 30 — — 48000 2580 20 25 25 25 30 30 40 — 52000 2800 252530 3040404050

60000 3240 40 40 40 40 40 50 50 50 64000 3440 40 40 40 50 50 50 50 60

9MUA-PRC001-EN

P erformance Data

Table PD-2 — Direct-Fir ed Outdoor Unit — Bur ner Selection (MBh Input)

Models Std Air 70 F 80 F 90 F 1 00 F 110 F 120 F DFO 70 F Rise Rise Rise Rise Rise Rise

109 2250 185 211 238 264 291 317

112 4000 329 376 423 470 517 563

115 5500 452 517 581 646 710 775

118 8000 657 751 845 939 1033 1127

215 10500 863 986 1 1 09 1233 1356 1479

218 15000 1233 1409 1585 1761 1937 2113

220 22000 1808 2066 2324 2583 2841 3099

222 29000 2383 2723 3064 3404 3745 4085

225 40000 3287 3757 4226 4696 5165 5635

230 56000 4602 5259 5917 6574 7231 —

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

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 Diversified Commercial Products Technical Support on temperature rise requirements greater than 120 F.

CFM

1600 131 150 169 188 207 225 1800 148 169 190 211 232 254 2000 164 188 211 235 258 282

2500 205 235 264 293 323 352 2750 226 258 291 323 355 387 3000 247 282 317 352 387 423 3250 267 305 343 382 420 458 3500 288 329 370 41 1 452 493 3750 308 352 396 440 484 528

4250 349 399 449 499 549 599 4500 370 423 475 528 581 634 5000 411 470 528 587 646 704

6000 493 563 634 704 775 845 6500 534 610 687 763 839 916 7000 575 657 740 822 904 986 7500 616 704 792 880 968 1057

8500 698 798 898 998 1 098 1197 9000 740 845 951 1057 1 1 62 1268 9500 781 892 1004 11 15 1227 1338

10000 822 939 1 057 1174 1291 1409 11000 904 1033 1162 1291 1420 1550

11500 945 1 080 1215 1350 1485 1620 12000 986 1127 1268 1409 1550 1690 12500 1027 1174 1321 1467 161 4 1761 13000 1068 1221 1373 1526 1679 1831 14000 1150 1 315 1479 1643 1808 1972

16000 1315 1503 1690 1878 2066 2254 17000 1397 1597 1796 1996 21 95 2395 18000 1479 1690 1902 2113 2324 2536 19000 1561 1784 2007 2230 2453 2677 20000 1643 1878 2113 2348 2583 2817 21000 1726 1972 2219 2465 2712 2958

23000 1890 2160 2430 2700 2970 3240 24000 1972 2254 2536 2817 3099 3381 25000 2054 2348 2641 2935 3228 3522 26000 2137 2442 2747 3052 3357 3663 25000 2054 2348 2641 2935 3228 3522 26000 2137 2442 2747 3052 3357 3663 27000 2219 2536 2853 3170 3487 3803 28000 2301 2630 2958 3287 3616 3944

30000 2465 2817 3170 3522 3874 4226 31000 2547 2911 3275 3639 4003 4367 30000 2465 2817 3170 3522 3874 4226 32000 2630 3005 3381 3757 4132 4508 34000 2794 3193 3592 3991 4390 4790 36000 2958 3381 3803 4226 4649 5071 38000 3123 3569 4015 4461 4907 5353

42000 3451 3944 4437 4930 5423 5917 44000 3616 4132 4649 5165 5682 6198 46000 3780 4320 4860 5400 5940 6480 44000 3616 4132 4649 5165 5682 6198 48000 3944 4508 5071 5635 6198 6762 52000 4273 4883 5494 6104 6715 7325

60000 4930 5635 6339 7043 7748 — 64000 5259 601 0 6762 7513 — —

.92

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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-0 1 Pilot Gas V alve VG-02 Main Gas Valve VG-03 Auxiliary Gas Valve VG-04 N/O Vent V alve VG-07 Maxitrol Modulating Valve PS-04 Low Gas Pressure Switch PS-07 High Gas Pressure Switch

Notes:

V ents to outside furnished by factory on outdoor units.

Under 825 MBh will require an additional gas pressure regulator if inlet pressure exceeds 1 psig.

4400 MBh and above will require a minimum inlet pressure of 1 psig. For inlet pressure under 1 psig, contact factory.

For inlet pressure under 1 0” WC, contact factory.

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. Refer to page 40.

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Gas Piping

Table GP-1— Gas Pr essur e Regulator Selection

If Burner Size (BS) Is: And Gas Pressure (GP) Is: Then: BS < 825 GP< 7” WC 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 < GP 50 PSI < GP Call factory to verify availability and pricing

990 < BS < 4125 GP < 7” W C Call factory to verify availability and pricing

7” WC 10” WC < GP < 5 PSI No low gas pressure burner or high gas pressure regulator required 5 PSI < GP 10 PSI < GP 50 PSI < GP Call factory to verify availability and pricing

4400 < BS < 7975 GP < 1 PSI Call factory to verify availability and pricing

1 PSI 5 PSI < GP < 10 PSI Use high gas pressure regulator 5-10 PSI 10 PSI < GP 50 PSI < GP Call factory to verify availability and pricing

< 10 PSI Use high gas pressure regulator 5-10 PSI

< 50 PSI Use high gas pressure regulator over 10 PSI

< GP < 10” WC Use low gas pressure burner

< 10 PSI Use high gas pressure regulator 5-10 PSI

< 50 PSI Use high gas pressure regulator over 10 PSI

< GP < 5 PSI No low gas pressure burner or high gas pressure regulator required

< 50 PSI Use high gas pressure regulator over 10 PSI

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Gas Piping

Table GP-2 — Gas Pipe Connection Siz e — Dir ect-Fired Units — IRI Gas T rain — R/A Meeting ETL

MBH 6-7" 8-11" 12-14" 15-20" 21-27" 1 psi 2 psi 3 psi 4 psi 5 psi

275 1" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 550 1 ¼" 1" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾"

825 2" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,100 2" 1 ¼" 1 ¼" 1 ¼" 1 ¼“ 1 ¼” 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,375 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,650 N/A 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,925 N/A 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,200 N/A 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,475 2 ½" 2" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,750 3" 2" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 3,025 3" 2 ½" 2" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 3,300 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 3,575 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 3,850 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 4,125 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 4,400 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 4,675 N/A 3" 2 ½" 2" 2" 2" 2" 2" 2" 2" 4,950 N/A 3" 2 ½" 2" 2" 2" 2" 2" 2" 2" 5,225 N/A 3" 2 ½" 2" 2" 2" 2" 2" 2" 2" 5,500 N/A 3" 2 ½" 2 ½" 2" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 5,775 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,050 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,325 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,600 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,875 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"

7,150 N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"

7,700 N/A N/A 3" 2 ½" 2 ½" 3" 3" 3" 3" 3" 8,250 N/A N/A 3" 3" 2 ½" 3" 3" 3" 3" 3" 8,800 N/A N/A N/A 3" 3" 3" 3" 3" 3" 3" 9,350 N/A N/A N/A 3" 3" 3" 3" 3" 3" 3" 9,900 N/A N/A N/A 3" 3" 3" 3" 3" 3" 3"

10,450 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 11,000 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 11,550 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)

Table GP-3 — Gas Pipe Connection Siz e — Dir ect-Fired Units — FM Gas T r ain — R/A Meeting ETL

Inlet Gas Pressure (inches of water column)

MBH 6-7" 8-11" 12-14" 15-20" 21-27" 1 psi 2 psi 3 psi 4 psi 5 psi

275 1" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 550 1 ¼" 1" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾"

825 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,100 2" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,375 2" 1 ½" 1 ½" 1 ½" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,650 2" 1 ½" 1 ¼" 1¼" 1¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,925 2" 2" 1 ¼" 1¼" 1¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,200 N/A 2" 1 ½" 1¼" 1¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,475 N/A 2" 1 ½" 1¼" 1¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,750 N/A 2" 2" 1 ½" 1¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 3,025 N/A 2" 2" 1 ½" 1¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 3,300 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 3,575 N/A 3" 2" 2" 2" 2" 2" 2" 2" 2" 3,850 N/A 3" 2" 2" 2" 2" 2" 2" 2" 2" 4,125 N/A 3" 2" 2" 2" 2" 2" 2" 2" 2" 4,400 N/A 3" 2" 2" 2" 2" 2" 2" 2" 2" 4,675 N/A 3" 2" 2" 2" 2" 2" 2" 2" 2" 4,950 N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 5,225 N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 5,500 N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 5,775 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,050 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,325 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,600 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,875 N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"

7,150 N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"

7,700 N/A N/A 3" 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 8,250 N/A N/A 3" 3" 3" 3" 3" 3" 3" 3" 8,800 N/A N/A N/A 3" 3" 3" 3" 3" 3" 3" 9,350 N/A N/A N/A 3" 3" 3" 3" 3" 3" 3" 9,900 N/A N/A N/A 3" 3" 3" 3" 3" 3" 3"

10,450 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 11,000 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 11,550 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A

13MUA-PRC001 -EN

Gas Piping

Table GP-4 — Gas Pipe Connection Siz e — Direct-Fir ed Units — Standar d Gas Tr ain — R/A Meeting ETL

MBH 6-7" 8-11" 12-14" 15-20" 21-27" 1 psi 2 psi 3 psi 4 psi 5 psi

275 1" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 550 1 ¼" 1" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾"

825 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,100 2" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,375 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,650 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,925 2 ½" 2" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,200 2 ½" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,475 2 ½" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,750 2 ½" 2" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 3,025 2 ½" 2" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 3,300 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 2" 3,575 3" 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 3,850 3" 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 4,125 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 4,400 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 4,675 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 4,950 N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 2" 5,225 N/A 2 ½" 2 ½" 2" 2" 2" 2" 2" 2" 2" 5,500 N/A 2 ½" 2 ½" 2" 2" 2" 2" 2" 2" 2" 5,775 N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,050 N/A 3 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,325 N/A 3 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,600 N/A 3 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,875 N/A 3 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"

7,150 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"

7,700 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 8,250 N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 8,800 N/A N/A 3 3 3 3 3 3 3 3 9,350 N/A N/A 3 3 3 3 3 3 3 3 9,900 N/A N/A 3 3 3 3 3 3 3 3

10,450 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 11,000 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 11,550 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)

Table GP-5 — Gas Pipe Connection Siz e — Direct-Fir ed Units — IRI Gas T rain — 100% OA or R/A Not ETL

MBH 6-7" 8-11" 12-14" 15-20" 21-27" 1 psi 2 psi 3 psi 4 psi 5 psi

275 1 ¼" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 550 N/A 1" ¾" ¾" ¾" ¾" ¾" ¾" ¾" ¾"

825 N/A N/A 1" ¾" ¾" ¾" ¾" ¾" ¾" ¾" 1,100 N/A 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,375 N/A 2" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,650 N/A N/A 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1,925 N/A N/A 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,200 N/A N/A 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,475 N/A N/A 2" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 2,750 N/A N/A 2" 2" 1 ½" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 1 ¼" 3,025 N/A N/A 2" 2" 2" 2" 2" 2" 2" 2" 3,300 N/A N/A 2" 2" 2" 2" 2" 2" 2" 2" 3,575 N/A N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 3,850 N/A N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 4,125 N/A N/A 2 ½" 2" 2" 2" 2" 2" 2" 2" 4,400 N/A N/A 2 ½" 2 ½" 2" 2" 2" 2" 2" 2" 4,675 N/A N/A 2 ½" 2 ½" 2" 2" 2" 2" 2" 2" 4,950 N/A N/A 2 ½" 2 ½" 2" 2" 2" 2" 2" 2" 5,225 N/A N/A 3" 2 ½" 2" 2" 2" 2" 2" 2" 5,500 N/A N/A 3" 2 ½" 2 ½" 2" 2" 2" 2" 2" 5,775 N/A N/A 3" 2 ½" 2 ½" 2" 2" 2" 2" 2" 6,050 N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,325 N/A N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,600 N/A N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 6,875 N/A N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"

7,150 N/A N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½"

7,700 N/A N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 8,250 N/A N/A N/A N/A 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 8,800 N/A N/A N/A N/A 3" 2 ½" 2 ½" 2 ½" 2 ½" 2 ½" 9,350 N/A N/A N/A N/A 3" 3" 3" 3" 3" 3" 9,900 N/A N/A N/A N/A 3" 3" 3" 3" 3" 3"

10,450 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 11,000 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 11,550 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A 12,100 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)

MUA-PRC001-EN14

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