hydronic unit heatersrhvacnet.com/厂家产品资料/顿汉布什/hydronic...dunham-bush vertical...

Features• Horizontal discharge output range from 11,100 to 340,000 Btu

• Vertical discharge output range from 23,100 to 952,000 Btu• Wide selection of options & accessories

• Steam or hot water applications• Full line of motor options

Form No. 3005

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Hydronic Unit Heatersfor steam or hot water applicationshorizontal and vertical discharge

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NOMENCLATURE ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

TABLE OF CONTENTS ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

DESCRIPTION PAGE

Horizontal Discharge Unit Heaters: Features ................................................................................................ 3Horizontal Discharge Unit Heaters: Design Features ..................................................................................... 3Vertical Discharge Unit Heaters: Features ..................................................................................................... 4Vertical Discharge Unit Heaters: Design Features ......................................................................................... 4Performance Data: Steam .......................................................................................................................... 5-6Performance Data: Hot Water ................................................................................................................... 7-8Dimensional Data & Motor Ratings: Horizontal Units ................................................................................... 9Dimensional Data & Motor Ratings: Vertical Units ..................................................................................... 10Motor Heights & Suspension ....................................................................................................................... 11Performance Curves: Hot Water ............................................................................................................. 12-19Deflector Blade Options.......................................................................................................................... 20-22Engineering Data ......................................................................................................................................... 23

Steam Unit Heater Selection ......................................................................................................... 24-25Hot Water Unit Heater Selection ................................................................................................... 26-27Motors .......................................................................................................................................... 28-29Piping ................................................................................................................................................. 30

Material Specifications ................................................................................................................................ 31Accessories .................................................................................................................................................. 31Typical Specifications ................................................................................................................................... 32

TypeH = Horizontal DischargeC = Vertical Discharge

H 018 C AA TE

Motor Voltage CodeAA = 115/1/60AG = 230-1-60CD = 200/3/60AN = 230/460/60/3AS = 575/60/3

Unit Size:

Motor TypeTE = Totally EnclosedXP = Explosion Proof

Coil TypeC—Standard copper tube, aluminum finsL—Standard copper tube, aluminum fins,

low outlet temperature ratingsN—Cu/Ni tube, aluminum fins, standard ratings

(vertical units only)Z—Cu/NI tube, aluminum fins, low outlet

temperature ratings (vertical units only)

ADDITIONAL LITERATURE ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Unit Heater Submittal Form (Horizontal, Model H) FormUnit Heater Submittal Form (Vertical Model C) FormInstallation, Operation, and Maintenance Instructions, Propeller Unit Heaters Form 3305

Btu/Hr Output Ratings for2# steam, 60°F entering air

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Dunham-Bush Horizontal Discharge Unit Heaters are available in thirteen sizes for either steam or hot waterservice with capacities ranging from 15,900 to 340,000 BTU (based on 2 lbs. steam pressure and 60°F enteringair). They are applicable to steam systems up to 150 psi working pressure.

With hot water heating systems they are adaptable to entering water temperatures of up to 375°F. The capacityrange based on 200°F entering water 20°F drop ranges from 11,100 to 271,200 BTU. (Canadian StandardsAssociation (CSA) requirements state that explosion-proof units may not be used with a fluid temperature inexcess of 329°F and still maintain the explosion-proof rating for National Electric Code ignition temperature T3Bfor grain dust).

Years of experience in the production of quality heating equipment through the construction of high grade, longlasting materials and superior craftsmanship make Dunham-Bush unit heaters the standard of quality in theindustry.

Motor and SupportAll standard motors are totally enclosed. Variable speed solidstate controllers can be supplied for single phase units H018thru H108. Single phase units size H121 and larger, and allthree phase units are constant speed only.

All standard single phase motors are mounted on a sturdymotor mount, which also serves as a fan guard, and is se-curely fastened to the unit heater casing.

Junction BoxAll units include a junction box either integral to the motoror attached to the unit casing for the electrical connection.Explosion proof units include an explosion proof junction boxattached to the motor.

CasingThe sturdy steel casing has squared off corners for a clean,smooth appearance. The steel casing is pre-treated to resist

DESIGN FEATURES

rust and finished in a baked tan powder paint. Casings areof a two-piece design to allow quick access to the coil.

Heating ElementThe heating element fins are die formed aluminum. Theyare mechanically bonded to the serpentine design coppertube. Connections are female type and through the side forlow clearance applications. Coil connections are of copperconstruction.

GeneralAll units are equipped with horizontal adjustable dischargelouvers. This arrangement permits deflection of the dischargeair in a vertical plain.

Propeller fans are light weight, accurately balanced andpitched to provide quiet and efficient air movement.

All units are certified and listed with the Canadian StandardsAssociation (CSA).

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HORIZONTAL DISCHARGE UNIT HEATERS: FEATURES

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Dunham-Bush Vertical Discharge Unit Heaters are available in fifteen sizes for steam or hot water heating, withcapacities ranging from 33,000 to 952,000 BTU (based on 2 lbs. steam pressure and 60°F entering air). They aredesigned for working pressures up to 150 psi. Entering hot water temperatures of up to 375°F may be used withhot water heating systems. Based on 200°F entering water 20°F drop, capacities range from 23,100 to 705,900BTU. (Canadian Standards Association (CSA) requirements state that explosion-proof units may not be used witha fluid temperature in excess of 329°F and still maintain the explosion-proof rating for National Electric Codeignition temperature T3B for grain dust.)

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MotorsAll standard motors are totally enclosed type. Motors are allbuilt to NEMA standards by major manufacturers and eachhas been specifically selected and tested for the specific unitheater application.

Junction BoxAll units include a junction box either integral to the motoror attached to the unit casing. Explosion proof units includean explosion proof junction box attached to the motor.

ConstructionThe sturdy motor support cone directs the air from the heatingelement to the fan, furnishing improved air flow and quietoperation while protecting the motor from excessive heat,dust and other impurities. The steel casing is pre- treated toresist rust and finished with a high quality tan powder coatpaint.

Heating ElementSupply and return lines are located on top and bottom ofthe unit, approximately in line with each other, for ease ofinstallation. The heating element fins are aluminum.Standard tubes are heavy copper mechanically bonded tothe fins to provide maximum heat transfer. Units are availablewith optional cupro-nickel tube coils for operating pressuresup to 250 psi and operating temperatures up to 400°F.

GeneralThe unit heaters are certified and listed with the CanadianStandards Association (CSA).

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VERTICAL DISCHARGE UNIT HEATERS: FEATURES

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Standard Models at Standard Conditions2 lbs. Steam; 60° Entering Air

High Motor Speeds

Reduced Motor SpeedsRequires Solid State Motor Speed Controller

(1) Horizontal units with horizontal louvers opened 30° from the vertical plane. Vertical types equipped with cone jet deflector, blades infull open position.

(2) For most popular motor used on these models.(3) Cfm for horizontal types is entering Cfm. Cfm for vertical types is leaving Cfm.(4) High motor speed.

Table 1

Table 2

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○PERFORMANCE DATA: STEAM

(1)Heat Heat(1)Max. Throw or Lower Throw Final

Mounting Spread Mtg. @ Lower Outlet Air Conden-Model Sq. Ft. Sound Height @ Max. Height Mtg. (3) Velocity Temp. sate (2) Approx

Type No. Btu./hr. Edr. Class (ft.) Height (ft.) Height Cfm (Fpm) (°F) Lbs./hr. Hp RPMHO18C 18,000 75 II 8 17 -- -- 340 625 107 18 1/60 1550HO24C 24,000 100 II 9 18 -- -- 370 695 119 25 1/25 1550HO33C 33,000 138 II 10 21 -- -- 630 690 108 35 1/25 1550HO47C 47,000 196 III 12 28 8 33 730 810 119 49 1/12 1550HO63C 63,000 263 III 14 29 8 39 1,120 690 111 66 1/12 1550

Horizontal HO86C 86,000 358 III 15 31 10 43 1,340 835 118 89 1/8 1625Delivery H108C 108,000 450 III 17 31 10 43 2,010 790 109 111 1/8 1625

H121C 121,000 504 III 16 25 10 38 1,775 715 122 126 1/6 1075H165C 165,000 688 IV 19 40 10 56 3,240 880 106 170 1/3 1075H193C 193,000 804 IV 18 38 10 53 2,900 810 121 200 1/3 1075H258C 258,000 1075 V 19 44 12 60 4,560 750 111 267 1/2 1075H290C 290,000 1208 V 20 46 12 60 4,590 765 117 300 1/2 1075H340C 340,000 1417 V 20 46 12 56 5,130 735 120 352 1/2 1075CO42C 42,000 175 II 15 11 -- -- 950 825 103 43 1/30 1050CO59C 59,000 246 II 19 14 -- -- 1,155 1,005 111 61 1/30 1050CO78C 78,000 325 II 20 15 -- -- 1,590 1,065 109 81 1/15 1050CO95C 95,000 396 II 20 15 -- -- 1,665 1,120 118 99 1/15 1050C139C 139,000 579 III 24 18 -- -- 2,660 1,285 112 144 1/6 1075C161C 161,000 671 IV 27 20 -- -- 2,945 1,420 115 167 1/3 1075

Vertical C193C 193,000 804 IV 30 22 -- -- 3,500 1,690 116 200 1/3 1075Delivery C212C 212,000 883 IV 30 22 -- -- 3,610 1,740 120 219 1/3 1075

C247C 247,000 1029 V 34 26 -- -- 4,820 1,910 111 256 1/2 1075C279C 279,000 1163 V 37 30 -- -- 5,460 2,165 111 288 1/2 1075C333C 333,000 1388 V 37 30 -- -- 5,980 2,165 116 345 3/4 1140C385C 385,000 1604 VI 36 30 -- -- 7,680 1,860 110 398 1 1140C500C 500,000 2083 VI 44 37 -- -- 10,390 2,520 108 518 1 1/2 1140C610C 610,000 2542 VI 43 36 -- -- 11,750 2,315 112 631 1 1/2 1140C952C 952,000 3967 VI 45 56 -- -- 12,170 2,321 139 986 2 1140

Air Data Motor Data

(1)HeatLow (1)Max. Throw or Final

Speed Mounting Spread Outlet Air Conden-Model Sq. Ft. Sound Height @ Max. (3) Velocity Temp. sate (2) Approx

Type No. Btu./hr. Edr. Class (ft.) (4) (ft.) Cfm (Fpm) (°F) Lbs./hr. Hp RPMHO18C 14,000 58 I 8 10 220 415 118 14 1/60 1000HO24C 18,000 75 I 9 11 230 440 131 18 1/25 1000HO33C 25,000 104 I 10 13 395 440 118 26 1/25 1000

Horizontal HO47C 38,000 158 II 12 17 450 515 137 36 1/12 1000Delivery HO63C 47,000 195 II 14 17 685 430 122 49 1/12 1000

HO86C 64,000 265 II 15 19 825 525 131 66 1/8 1000H108C 81,000 340 II 17 19 1,255 500 119 84 1/8 1000

Air Data Motor Data

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Low-Outlet Temperature Models at Standard Conditions2 lbs. Steam; 60° Entering Air

High Motor Speeds




Table 4

Table 2

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○PERFORMANCE DATA: STEAM

(1)Heat Heat(1)Max. Throw or Lower Throw Final

Mounting Spread Mtg. @ Lower Outlet Air Conden-Model Sq. Ft. Sound Height @ Max. Height Mtg. (3) Velocity Temp. sate (2) Approx

Type No. Btu./hr. Edr. Class (ft.) Height (ft.) Height Cfm (Fpm) (°F) Lbs./hr. Hp RPMHO18L 15,900 66 II 9 20 -- -- 364 655 100 17 1/60 1550HO24L 19,300 80 II 11 21 -- -- 435 795 100 20 1/25 1550HO33L 29,500 123 II 12 24 -- -- 695 745 99 31 1/25 1550HO47L 32,000 133 III 14 32 8 46 855 910 94 34 1/12 1550HO63L 52,500 219 III 16 33 8 46 1,170 710 101 55 1/12 1550

Horizontal HO86L 61,500 256 III 17 36 10 41 1,510 910 97 64 1/8 1625Delivery H108L 86,500 360 III 19 36 10 50 2,150 825 97 90 1/8 1625

H121L 88,000 367 III 18 29 10 41 2,070 800 98 91 1/6 1075H165L 143,000 596 IV 21 45 10 64 3,480 930 97 148 1/3 1075H258L 190,000 792 V 22 51 12 70 4,655 750 98 200 1/2 1075H290L 207,000 863 V 23 53 12 76 5,040 805 94 215 1/2 1075H340L 255,000 1063 V 23 53 12 72 5,575 775 102 264 1/2 1075CO42L 33,000 138 II 17 13 -- -- 960 835 94 34 1/30 1050CO59L 44,000 183 II 22 16 -- -- 1,190 1035 96 45 1/30 1050CO78L 62,000 258 II 26 19 -- -- 1,740 1070 95 65 1/15 1050CO95L 71,000 296 II 26 19 -- -- 1,760 1180 99 73 1/15 1050C139L 103,000 429 III 31 23 -- -- 2,860 1380 95 106 1/6 1075C161L 127,000 529 IV 35 26 -- -- 3,400 1640 96 132 1/3 1075

Vertical C193L 149,000 621 IV 36 27 -- -- 3,710 1790 99 154 1/3 1075Delivery C212L 163,000 679 IV 36 27 -- -- 3,830 1845 102 169 1/3 1075

C247L 190,000 792 V 42 32 -- -- 5,110 2030 96 197 1/2 1075C279L 215,000 896 V 45 36 -- -- 5,790 2300 96 222 1/2 1075C333L 256,000 1067 V 45 36 -- -- 6,340 2300 100 265 3/4 1140C385L 296,000 1233 VI 43 36 -- -- 8,140 1970 95 307 1 1140C500L 385,000 1604 VI 54 45 -- -- 11,000 2670 94 400 1 1/2 1140C610L 470,000 1958 VI 52 44 -- -- 12,400 2445 97 485 1 1/2 1140C952L 733,000 3055 VI 61 68 -- -- 12,940 2450 115 759 2 1140

Air Data Motor Data

(1)HeatLow (1)Max. Throw or Final

Speed Mounting Spread Outlet Air Conden-Model Sq. Ft. Sound Height @ Max. (3) Velocity Temp. sate (2) Approx

Type No. Btu./hr. Edr. Class (ft.) (4) (ft.) Cfm (Fpm) (°F) Lbs./hr. Hp RPMHO18L 12,000 51 I 9 12 230 425 108 13 1/60 1000HO24L 14,400 60 I 11 13 265 490 109 15 1/25 1000HO33L 22,000 92 I 12 14 430 470 107 23 1/25 1000

Horizontal HO47L 24,300 101 II 14 19 540 580 101 25 1/12 1000Delivery HO63L 39,500 164 II 16 20 725 445 109 41 1/12 1000

HO86L 46,000 192 II 17 22 925 565 105 47 1/8 1000H108L 65,000 270 II 19 22 1,330 520 104 67 1/8 1000

Air Data Motor Data

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Standard Models at Standard Conditions200°F Entering Water, 60°F Entering Air

20°F Water Temperature Drop

High Motor Speeds




Table 5

Table 6

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(1)Heat HeatPressure (1)Max. Throw or Lower Throw @ Final

Drop Mounting Spread Mtg. Lower Outlet AirModel (Ft. of Sound Height @Max. Height Mtg. (3) Velocity Temp. (2) Approx.

Type No. Btu/hr. GPM Water) Class (ft.) Height (ft.) Height Cfm (Fpm) (°F) Hp RpmHO18C 12,400 1.3 0.5 II 9 18 --- --- 340 615 93 1/60 1550HO24C 16,600 1.7 0.8 II 10 19 --- --- 370 675 101 1/25 1550HO33C 21,600 2.2 0.2 II 11 23 --- --- 630 675 91 1/25 1550HO47C 30,800 3.2 0.3 III 13 30 8 36 730 785 98 1/12 1550HO63C 44,800 4.6 0.8 III 15 31 8 42 1,120 680 96 1/12 1550

Horizontal HO86C 62,600 6.5 1.4 III 16 33 10 46 1,340 820 102 1/8 1625Delivery H108C 81,000 8.4 3.2 III 18 33 10 46 2,010 775 96 1/8 1625

H121C 91,900 9.5 4.0 III 17 27 10 41 1,775 700 107 1/6 1075H165C 131,900 13.7 7.9 IV 20 43 10 60 3,240 870 97 1/3 1075H193C 145,200 15.1 2.0 IV 19 41 10 57 2,900 790 105 1/3 1075H258C 200,500 20.8 5.0 V 20 47 12 65 4,560 740 100 1/2 1075H290C 228,600 23.7 5.8 V 22 50 12 65 4,590 750 105 1/2 1075H340C 271,200 28.1 11.0 V 22 50 12 60 5,130 720 108 1/2 1075CO42C 30,300 3.1 0.6 II 16 12 --- --- 950 825 91 1/30 1050CO59C 42,900 4.4 0.6 II 20 15 --- --- 1,155 1005 96 1/30 1050CO78C 57,200 5.9 0.6 II 22 16 --- --- 1,590 1065 95 1/15 1050CO95C 69,800 7.2 0.5 II 22 16 --- --- 1,665 1120 101 1/15 1050C139C 107,400 11.1 2.4 III 26 19 --- --- 2,660 1285 99 1/6 1075

Vertical C161C 124,200 12.9 2.2 IV 29 22 --- --- 2,945 1420 98 1/3 1075Delivery C193C 148,800 15.4 1.8 IV 32 24 --- --- 3,500 1690 102 1/3 1075

C212C 162,400 16.8 1.4 IV 32 24 --- --- 3,610 1740 104 1/3 1075C247C 189,800 19.7 1.9 V 37 28 --- --- 4,820 1910 98 1/2 1075C279C 214,000 22.2 2.0 V 40 32 --- --- 5,460 2165 98 1/2 1075C333C 261,600 27.1 3.8 V 40 32 --- --- 5,980 2165 103 3/4 1140C385C 303,900 31.5 2.8 VI 39 32 --- --- 7,680 1860 97 1 1140C500C 392,900 40.8 4.2 VI 47 40 --- --- 10,390 2520 97 1 1/2 1140C610C 454,600 47.2 0.8 VI 46 39 --- --- 11,750 2315 98 1 1/2 1140C952C 705,900 70.7 1.0 VI 63 70 --- --- 12,166 2321 119 2 1140

Air Data Motor Data

(1)Pressure Low Max. Heat Final

Drop Speed Mounting Throw or Outlet AirModel (Ft. of Sound Height Spread (3) Velocity. Temp. (2) Approx

Type No. Btu./hr. GPM Water) Class (ft.) (4) (ft.) Cfm (Fpm) (°F) Hp RPMHO18C 9,800 1.3 0.5 I 9 11 220 400 100 1/60 1000HO24C 12,000 1.6 0.8 I 10 12 230 425 105 1/25 1000HO33C 19,000 2.5 0.2 I 11 14 395 430 105 1/25 1000

Horizontal HO47C 22,000 2.9 0.3 II 13 18 450 490 105 1/12 1000Delivery HO63C 36,000 4.7 0.8 II 15 18 685 420 105 1/12 1000

HO86C 48,000 6.3 1.4 II 16 20 825 515 115 1/8 1000H108C 62,000 8.1 3.2 II 18 20 1,255 490 105 1/8 1000

Air Data Motor Data

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Low-Outlet Temperature Models at Standard Conditions

High Motor Speeds



200°F Entering Water, 60°F Entering Air20°F Water Temperature Drop


Table 7

Table 8

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(1)Heat HeatPressure (1)Max. Throw or Lower Throw @ Final

Drop Mounting Spread Mtg. Lower Outlet AirModel (Ft. of Sound Height @Max. Height Mtg. (3) Velocity Temp. (2) Approx.

Type No. Btu/hr. GPM Water) Class (ft.) Height (ft.) Height Cfm (Fpm) (°F) Hp RpmHO18L 11,100 1.2 0.4 II 10 21 --- --- 364 650 88 1/60 1550HO24L 13,500 1.4 0.6 II 12 22 --- --- 435 775 88 1/25 1550HO33L 19,500 2.0 0.1 II 13 26 --- --- 695 730 86 1/25 1550HO47L 21,000 2.2 0.2 III 15 34 8 50 855 890 82 1/12 1550HO63L 38,000 3.9 0.5 III 17 35 8 50 1,170 695 89 1/12 1550

Horizontal HO86L 44,800 4.6 0.7 III 18 38 10 55 1,510 890 87 1/8 1625Delivery H108L 65,300 6.8 2.2 III 20 38 10 54 2,150 815 88 1/8 1625

H121L 65,900 6.8 2.2 III 19 31 10 44 2,070 785 89 1/6 1075H165L 113,900 11.8 5.6 IV 23 48 10 69 3,480 920 90 1/3 1075H258L 149,600 15.5 2.8 V 23 54 12 76 4,655 735 89 1/2 1075H290L 163,200 16.9 3.2 V 25 57 12 82 5,040 800 89 1/2 1075H340L 201,600 20.9 7.0 V 25 57 12 78 5,575 760 93 1/2 1075CO42L 23,100 2.4 0.4 II 18 14 --- --- 960 835 83 1/30 1050CO59L 32,800 3.4 0.3 II 23 17 --- --- 1,190 1035 86 1/30 1050CO78L 43,700 4.5 0.4 II 28 21 --- --- 1,740 1170 84 1/15 1050CO95L 53,300 5.5 0.3 II 28 21 --- --- 1,760 1180 89 1/15 1050C139L 81,500 8.5 1.3 III 33 25 --- --- 2,860 1380 87 1/6 1075C161L 94,400 9.8 1.3 IV 37 28 --- --- 3,400 1640 87 1/3 1075

Vertical C193L 113,100 11.7 1.2 IV 38 29 --- --- 3,710 1790 89 1/3 1075Delivery C212L 123,800 12.8 0.8 IV 38 29 --- --- 3,830 1845 91 1/3 1075

C247L 144,400 15.0 1.0 V 45 35 --- --- 5,110 2030 87 1/2 1075C279L 162,900 16.9 1.2 V 48 39 --- --- 5,790 2300 87 1/2 1075C333L 198,900 20.6 2.1 V 48 39 --- --- 6,340 2300 90 3/4 1140C385L 230,600 23.9 1.6 VI 46 49 --- --- 8,140 1970 87 1 1140C500L 298,400 31.0 2.5 VI 57 49 --- --- 11,000 2670 86 1 1/2 1140C610L 346,000 35.9 0.6 VI 55 48 --- --- 12,400 2445 87 1 1/2 1140C952L 546,300 54.7 0.6 VI 61 68 --- --- 12,800 2440 102 2 1140

Air Data Motor Data

(1)Pressure Low Max. Heat Final

Drop Speed Mounting Throw or Outlet AirModel (Ft. of Sound Height Spread (3) Velocity. Temp. (2) Approx

Type No. Btu./hr. GPM Water) Class (ft.) (4) (ft.) Cfm (Fpm) (°F) Hp RPMHO18L 8,500 1.1 0.4 I 10 13 230 410 93 1/60 1000HO24L 10,000 1.3 0.6 I 12 14 265 475 94 1/25 1000HO33L 14,500 1.9 0.1 I 13 16 430 455 90 1/25 1000

Horizontal HO47L 16,000 2.1 0.2 II 15 21 540 570 87 1/12 1000Delivery HO63L 29,000 3.8 0.5 II 17 21 725 435 96 1/12 1000

HO86L 34,000 4.4 0.7 II 18 23 925 550 93 1/8 1000H108L 50,000 6.5 2.2 II 20 23 1,330 510 94 1/8 1000

Air Data Motor Data

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Horizontal Air Delivery Models — Model "H" Horizonal Units

Table 9 — Model "H" Dimensions-Inches

Mounting Holes3/8"-16 Tap Mounting

Holes

PipeConnection

EB G

F

DC

H

5"Min.

Table 10 — Model "H" Motor Ampere RatingsRatings shown are the same for the Standard and Low Outlet Temperature Models

A

○ ○ ○ ○ ○ ○ ○ ○DIMENSIONAL DATA & MOTOR RATINGS: HORIZONTAL UNITS

Approx.115V Std. 115V Exp. Connections Fan Shipping

A B C Motor Motor E F G H NPT Dia. Wt. LbsHO18C HO18L 11 1/2 12 3/4 6 5 12 1/2 5 5/8 2 1/4 4 1/8 7 1/2 1/2 9 16HO24C HO24L 11 1/2 12 3/4 6 5 12 1/2 5 5/8 2 1/4 4 1/8 7 1/2 1/2 9 20HO33C HO33L 15 17 1/2 8 3/4 6 12 11 3 5/8 6 10 3/4 12 34HO47C HO47L 15 17 1/2 8 3/4 6 12 11 3 5/8 6 10 3/4 12 36HO63C HO63L 18 1/2 21 1/2 8 3/4 7 5/8 12 15 3 5/8 6 14 3/4 14 48HO86C HO86L 18 1/2 21 1/2 8 3/4 7 5/8 12 15 3 5/8 6 14 3/4 14 52H108C H108L 22 1/2 25 1/2 9 1/2 6 3/4 13 1/4 18 3 5/8 6 3/8 18 3/4 18 74H121C H121L 22 1/2 25 1/2 9 1/2 6 3/4 13 1/4 18 3 5/8 6 3/8 18 3/4 18 76H165C H165L 26 1/2 29 1/2 9 1/4 8 1/2 14 21 1/4 3 5/8 6 3/8 22 3/4 22 92H193C -- 30 1/2 32 1/2 9 1/4 8 1/2 14 21 1/4 3 5/8 4 3/4 26 1 1/4 22 98H258C H258L 38 1/2 38 1/2 12 1/2 10 15 18 5/8 3 5/8 8 34 1 1/4 22 162H290C H290L 38 1/2 38 1/2 12 1/2 10 15 18 5/8 3 5/8 8 34 1 1/4 24 168H340C H340L 38 1/2 44 1/2 12 1/2 10 15 18 5/8 3 5/8 8 34 1 1/4 24 176

Model No.

D

115/60/1 230/60/1 200/60/3 230/460/60/3 115/60/1 230/460/60/3 575/60/3 575/60/3Totally Totally Explosion Explosion Explosion

Enclosed Enclosed Proof Proof Proofw/Thermal w/Thermal Totally Totally w/Thermal w/Thermal Totally w/Thermal

Model Overload Overload Enclosed Enclosed Overload Overload Enclosed OverloadNo. (AATE) (AGTE) (CDTE) (ANTE) (AAXP) (ANXP) (ASTE) (ASXP)

HO18 0.8 0.44 --- --- 3.1 --- --- ---HO24 1.6 0.44 --- --- 3.1 --- --- ---HO33 1.6 1.0 --- --- 3.1 --- --- ---HO47 2.2 1.0 1.1 1.4/0.7 3.1 --- --- ---HO63 2.2 1.0 1.1 1.4/0.7 3.1 --- --- ---HO86 2.3 1.0 1.1 1.4/0.7 3.1 --- --- ---H108 2.3 1.0 1.1 1.4/0.7 3.1 --- --- ---H121 2.8 1.5 1.9 2.1/1.05 4.1 1.5/0.75 0.84 ---H165 5.4 2.23 1.9 2.1/1.05 6.1 1.5/0.75 0.84 ---H193 5.4 2.23 1.9 2.1/1.05 6.1 1.5/0.75 0.84 ---H258 7.5 3.5 2.6 3.0/1.5 7.2 2.0/1.0 0.92 0.76H290 7.5 3.5 2.6 3.0/1.5 7.2 2.0/1.0 0.92 0.76H340 7.5 3.5 2.6 3.0/1.5 7.2 2.0/1.0 0.92 0.76

Motor Type and Voltage

10

Model "C" Vertical Air Delivery Models

Table 11 — Model "C" Dimensions-Inches

4-Mounting Holes1/2"-13 Tap

Cone-JetTurncone

B

12"Min.

M

NP

L

Table 12 — Model "C" Motor Ampere RatingsRatings shown are the same for the Standard and Low Outlet Temperature Models

E

8-Mounting Holes5/8" Dia. in Angle

Iron Bracket

CO42 Through C279 C333 Through C952Male ReturnC610/C952

MaleSupply

C610/C952

MaleReturn

C333, C385,C500

MaleSupply

MaleReturn

Louvers Anemostat

OutletFan

Guard

Diameter

Diameter

F

A 2 3/4"

C C

D D

C

○ ○ ○ ○ ○ ○ ○ ○ ○DIMENSIONAL DATA & MOTOR RATINGS: VERTICAL UNITS

Male Approx.Model Fan Conn. NPT Shipping

Number A B C D E F L M N P Dia. Top Bottom Wt. Lbs.CO42 24 3/4 3 5/8 11 3/8 2 1/8 4 3/8 14 1/2 6 1/2 12 10 1/4 6 1/2 14 1 1/4 1 1/4 36CO59 24 3/4 5 1/8 11 3/8 2 1/8 4 3/8 14 1/2 6 1/2 12 10 1/4 6 1/2 14 1 1/4 1 1/4 42CO78 24 3/4 6 5/8 11 3/8 2 1/8 2 5/8 16 1/2 6 1/2 12 13 6 1/2 16 1 1/4 1 1/4 46CO95 24 3/4 8 1/8 11 3/8 2 1/8 2 5/8 16 1/2 6 1/2 12 13 6 1/2 16 1 1/4 1 1/4 48C139 34 3/4 6 7/8 18 3/8 2 1/8 3 19 1/2 7 1/2 13 11 1/4 7 1/2 19 1 1/2 1 70C161 34 3/4 8 3/8 18 3/8 2 1/8 3 19 1/2 7 1/2 13 11 1/4 7 1/2 19 1 1/2 1 80C193 34 3/4 9 7/8 18 3/8 2 1/8 3 19 1/2 7 1/2 13 11 1/4 7 1/2 19 1 1/2 1 86C212 34 3/4 12 7/8 18 3/8 2 1/8 3 19 1/2 7 1/2 13 11 1/4 7 1/2 19 2 1 1/4 94C247 34 3/4 12 7/8 18 3/8 2 1/8 3 21 1/2 8 16 12 3/4 8 21 2 1 1/4 108C279 34 3/4 14 3/4 18 3/8 2 1/8 3 21 1/2 8 16 12 3/4 8 21 2 1 1/4 112C333 43 1/4 14 1/2 24 2 7/8 3 1/8 22 1/2 8 1/2 16 12 8 1/2 22 2 1/2 1 1/2 166C385 43 1/4 14 1/2 24 2 7/8 3 1/2 27 1/2 10 21 14 10 27 2 1/2 1 1/2 168C500 43 1/4 19 24 2 7/8 3 1/2 27 1/2 10 21 14 10 27 2 1/2 1 1/2 360C610 51 1/2 19 1/8 24 --- 3 3/4 30 1/2 10 1/2 21 --- 10 1/2 30 2 1/2 1 1/2 450C952 53 3/4 21 1/4 30 --- 3 1/2 31 --- 22 --- 18 3/4 30 3 3 487

115/60/1 230/60/1 200/60/3 230/460/60/3 115/60/1 230/460/60/3 575/60/3 575/60/3Totally Totally Explosion Explosion Explosion

Enclosed Enclosed Proof Proof Proofw/Thermal w/Thermal Totally Totally w/Thermal w/Thermal Totally w/Thermal

Model Overload Overload Enclosed Enclosed Overload Overload Enclosed OverloadNo. (AATE) (AGTE) (CDTE) (ANTE) (AAXP) (ANXP) (ASTE) (ASXP)

C042 1.9 1.28 1.9 2.1/1.05 4.1 --- 0.84 ---C059 1.9 1.28 1.9 2.1/1.05 4.1 --- 0.84 ---C078 2.4 1.28 1.9 2.1/1.05 4.1 --- 0.84 ---C095 2.4 1.28 1.9 2.1/1.05 4.1 --- 0.84 ---C139 2.8 1.5 1.9 2.1/1.05 4.1 1.5/.75 0.84 ---C161 5.4 2.23 1.9 2.1/1.05 6.1 1.5/.75 0.84 ---C193 5.4 2.23 1.9 2.1/1.05 6.1 1.5/.75 0.84 ---C212 5.4 2.23 1.9 2.1/1.05 6.1 1.5/.75 0.84 ---C247 7.5 3.5 2.6 3.0/1.5 7.2 2.0/1.0 0.92 0.76C279 7.5 3.5 2.6 3.0/1.5 7.2 2.0/1.0 0.92 0.76C333 8.8 4.4 3.7 3.4/1.7 --- --- 1.24 1.4C385 --- --- 4.0 4.0/2.0 --- 3.5/1.75 1.6 1.4C500 --- --- 5.8 5.2/2.6 --- 5.8/2.9 2 2.32C610 --- --- 5.8 5.2/2.6 --- 5.8/2.9 2 2.32C952 --- --- --- 6.8/3.4 --- 6.2/3.1 --- ---

Motor Type and Voltage

11

Unit SuspensionHorizontal models H018 through H063 have two tappedholes 3/8" - 16 in the top for unit suspension. Models H108through H340 have two tapped holes 1/2" - 13 in the topfor unit suspension. Independent suspension can be madewith threaded rods, pipes, or ceiling hanger brackets. SeeFigure 1.

Vertical models C042 through C279 have four tapped holes1/2" - 13 in the top cover for unit suspension. Unit suspensionfor these models can be made with threaded rods, pipes orceiling hanger brackets. Models C333 through C952 areequipped with an angle-iron mounting bracket that has eight5/8-inch diameter hanger holes permitting hook-hoisting andsuspension with cables, if desired. A 1/2-inch U-bolt, 3-inchcenter can be inserted in the two holes at each end of thebracket to accommodate suspension with four threadedrods, pipes or hanger brackets. See Figure 1.

Note: A pipe hanger adapter kit for the vertical modelsC042 through C279 as illustrated in Figure 1 is available asan accessory from Dunham-Bush, Inc. The kit consists oftwo drilled 3/4-inch NPT pipe caps and two cap screws tofacilitate threaded-pipe suspension. Two kits are requiredto mount each model "C" vertical unit.

Table 14 Maximum Mounting Heights Correction Factors

These correction factors are to be used as multipliers to correct the maximum recommended mounting heights of unit heaterswhen operated with steam pressures other than 2 pounds or with water at other than average temperature of 220°F.

Table 13 Maximum Mounting Heights

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○MOUNTING HEIGHTS AND SUSPENSION

3-Cone 4-Cone Horizontal Type (1) No Deflector Cone-Jet Turncone Louvers Anemostat AnemostatModel Height - Ft. Model Height - Ft. Height - Ft. Height - Ft. Height - Ft. Height - Ft. Height - Ft. No. Std. L.O.T. No. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T. Std. L.O.T.H018 8 9 C042 11 13 15 17 8 9 13 15 8 9 8 8H024 9 11 C059 14 16 19 22 9 11 16 18 9 11 8 10H033 10 12 C078 15 19 20 26 11 14 17 22 11 14 8 12H047 12 14 C095 15 19 20 26 11 14 17 22 11 14 8 12H063 14 16 C139 18 23 24 31 13 17 21 26 13 17 9 13H086 15 17 C161 20 26 27 35 14 18 23 30 14 18 10 14H108 17 19 C193 22 27 30 36 16 19 25 31 16 19 12 15H121 16 18 C212 22 27 30 36 16 19 25 31 16 19 12 15H165 19 21 C247 26 32 34 42 17 21 30 37 17 21 13 16H193 18 --- C279 30 36 37 45 18 22 35 41 18 22 13 16H258 19 22 C333 30 36 37 45 17 20 35 41 17 20 13 16H290 20 23 C385 30 36 36 43 17 20 35 41 17 20 13 16H340 20 23 C500 37 45 44 54 19 24 42 51 19 24 13 16

C610 36 44 43 52 19 24 41 50 --- --- --- ---C952 37 45 45 61 45 53 --- --- --- --- --- ---

Vertical type with Deflectors

(1) With horizontal louvers opened 30° from the vertical plane.H units have side connections. All have copper tubes.Mounting heights are maximum for heaters operating at standard conditions (2 lbs. steam or 220°F water with 60°F entering air). Heightslisted for Louver or Cone-jet are with deflectors in fully-opened position. Refer to Table 14 for correction of mounting heights under otheroperating conditions. Maximum mounting height will be reduced as entering air temperatures exceed 60°F

12

200°F Entering Water Temperature60°F Entering Air Temperature

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○PERFORMANCE CURVES: HOT WATER

40

35

30

25

10

0

5

15

20

.01

.050.1

0.51

510

50100

0.2 0.3 0.3 0.5 0.6 0.8 1 1.5 2 3 54 6 7 8 9 10

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

Stan

dar

d M

od

els

H01

8C, H

024C

, H03

3C, H

047C

100

90

80

70

40

30

50

60

.01

.050.1

0.51

510

50100

0.5 0.6 0.8 1 2 3 54 6 7 8 9 10

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

Stan

dar

d M

od

els

H06

3C, H

086C

, H10

8C, H

121C

Indicates point of 20°F water temperature dropIndicates point of 10°F water temperature dropIndicates point of 40°F water temperature drop

H063C

H063C & 086C

H108C & 121C

20 30 4020

H047C

H033C

H024C

H018C

H033C & 047C

H018C & 024C

H121C

H108C

H086C

13



250

225

200

175

100

75

125

150

.01

.050.1

0.51

510

50100

2 3 4 5 6 10 20 30 5040 607 70 80

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

H258C

H193C

H165C

H193CH258C

Stan

dar

d M

od

els

H16

5C, H

193C

, H25

8C

300

275

250

225

150

100

125

175

200

.01

.050.1

0.51

510

50100

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

H340C

H290C

H290C

H340C

Stan

dar

d M

od

els

H29

0C, H

340C


50

H165C

8 9

2 3 4 5 6 10 20 30 5040 607 70 808 9 100

14



80

70

60

50

20

0

10

30

40

.01

.050.1

0.51

510

50100

0.5 0.6 0.8 1 2 3 4 5 6 7 8 910

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

Stan

dar

d M

od

els

C04

2C, C

059C

, C07

8C, C

095C

160

140

120

100

40

20

60

80

.01

.050.1

0.51

510

50100

1.5 2 3 54 6 7 8 9 10

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

Stan

dar

d M

od

els

C13

9C, C

161C

, C19

3C


C193CC161C

20 30 400

C095C

C078C

C059C

C042C

C095CC042C

C193C

C161C

C139C

C059C C078C

3020

50

C139C

15



240

220

200

180

120

100

140

160

.01

.050.1

0.51

510

50100

2 3 4 5 6 10 20 30 5040 607 70 80

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

C279C

C247C

C212C

C279C

Stan

dar

d M

od

els

C21

2C, C

247C

, C27

9C


80

C212C & C247C

8 9 90 100

16



750

700

650

600

450

100

400

500

550

.01

.050.1

0.51

510

50100

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

C610C

C610C

C333C & 680C

Stan

dar

d M

od

els

C33

3C, C

385C

, C50

0C, C

610C

, C68

0C

4 5 6 10 20 30 5040 607 70 808 9 200

350

300

200

250

150

50

0

C500C

C385C

C333C

C385C & C500C

10090

C680C

30

25

20

15

0

5

10

.01

.050.1

0.51

510

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

H024L

Low

Ou

tlet

Tem

per

atu

re M

od

els

H01

8L, H

024L

, H03

3L, H

047L

0.2 0.3 1 21.5 3

H018L

H047L

H033L

H033L & 047L

H018L & 024L

0.4 0.5 0.6 0.8 4 5 6 7 8 9 10


17




80

70

60

50

20

10

30

40

.01

.050.1

0.51

510

50100

0.5 1 5 6 3020 40

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

H108L

H086L

H063L

Low

Ou

tlet

Tem

per

atu

re M

od

els

H06

3L, H

086L

, H12

1L, H

108L

2 3

H121L

0.6 0.8 4 7 8 9 10

H063L & 086L

H108L & 121L

220

200

180

160

100

80

120

140

.01

.050.1

0.51

510

50100

2 4 6 3020 40

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

H340L

H258L

H165L

Low

Ou

tlet

Tem

per

atu

re M

od

els

H16

5L, H

258L

, H29

0L, H

340L

53

H290L

7 8 9 10

H258L & 290L

H165L H340L

50 60 70 80

18




80

70

60

50

20

10

30

40

.01

.050.1

0.51

510

50100

0.5 1 5 6 3020

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

C095L

C078L

C059L

Low

Ou

tlet

Tem

per

atu

re M

od

els

C04

2L, C

059L

, C07

8L, C

095L

2 3

C042L

0.6 0.8 4 7 8 9 10

C042L

Low

Ou

tlet

Tem

per

atu

re M

od

els

C13

9L, C

161L

, C19

3L

C059L C078L

C095L

0

200

180

160

140

80

60

100

120

.01

.050.1

0.51

510

50100

1.5 3 5 3020 40

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

C161L

C139L

42

C193L

6 8 9 10

C193LC139L C161L

5040

7

19




Low

Ou

tlet

Tem

per

atu

re M

od

els

C21

2L, C

247L

, C27

9L200

180

160

140

80

60

100

120

.01

.050.1

0.51

510

50100

2 4 6 3015 90

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

C247L

C212L

53

C279L

7 8 9 10

C279LC212L & C247L

10040

Low

Ou

tlet

Tem

per

atu

re M

od

els

C33

3L, C

385L

, C50

0L, C

610L

400

350

300

250

100

50

150

200

.01

.050.1

0.51

510

50100

3 5 3020 40

BTU

/HR

X 1

000

PRES

SURE

DRO

PFT

OF

WA

TER

WATERFLOWGPM

C500L

C385L

42.5

C610L

6 8 9 10

C610L

C333L

C385L & C500L

500

7

20 8070605040

C333L

60 70 80 90 100

20

Deflector MountingIf an optional air deflector has been furnished for model "C"vertical units, it is always shipped separately and can beattached to the unit before suspension. Cone-jet and louver-type deflectors must be attached with angle brackets andmachine screws to the bottom cover of the unit. Refer tomounting instructions which are furnished with eachdeflector.

Depending on supply or return piping arrangement, thereis a possibility of interference between certain anemostatair deflectors and piping on some model "C" vertical airdelivery unit heaters. Check your dimensions beforeproceeding with the installation.

Vertical louvers for model "H" horizontal units can also beadded and positioned before installation.

Figure 1Unit Suspension

Figure 3Vertical Delivery without Deflector

Figure 4Vertical Delivery with Cone-Jet

Figure 5Vertical Delivery with Louvers

Figure 6Vertical Delivery with Turncone

Figure 2Horizontal Unit Delivery

Pipe HangerAdapter Kit

C042 thru C279 C333 thru C952

H018 thru H340

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○DEFLECTOR BLADE OPTIONS

HH

H

H

H

H

H

21

Models H018 & H0241. Removal of horizontal deflector blades (Figure 7).

a. Push horizontal deflector blade against coil springuntil it is compressed.

b. While coil spring is compressed, pop out deflectorblade from opposite end.

2. Mounting flange installation (Figure 9).Using the mounting flanges as templates, drill holes intop and bottom unit casing and fasten with sheet metalscrews (by others) as shown in Figure 9.

3. Replacement of horizontal deflector blades (Figure 7).a. Replace coil spring on horizontal deflector blade

(the spring should be located so that it is on theleft side when facing unit. The blade should curvedownward with the rounded edges facing out-ward).

b. Insert left tab of horizontal deflector blade (withcoil spring intact) into hole and compress coilspring.

c. Insert other tab into hole on opposite side of unitheater.

4. Vertical deflector blade installation (Figure 9).a. Insert the support rod through the holes provided

in the mounting flanges. Secure this support withthe acorn push nuts provided.

b. Assemble the coil spring provided to the straightend of each deflector blade and insert the ends ofthe blades with the coil springs into holes in mount-ing flanges. Push the deflector blade until thebeveled end slips into the hole of the oppositemounting flange.

Models H033 thru H1931. Removal of horizontal deflector blades (Figure 7).

a. Push horizontal deflector blade against coil springuntil it is compressed.

b. While coil spring is compressed, pop out deflectorblade from opposite end.

2. Vertical deflector blade installation (Figure 8).a. Place coil spring on bottom end of the vertical de-

flector blade.b. Insert bottom tab of vertical deflector blade (with

coil spring intact) into the embossed hole providedon the bottom unit baffle.

c. Push deflector blade against coil spring until it iscompressed.

d. Insert top tab of vertical deflector into hole pro-vided in upper unit baffle (if correctly inserted thedeflector blade will be straight up and down andcan be turned from side to side).

3. Replacement of horizontal deflector blades (Figure 10).a. Replace coil spring on horizontal deflector blade

(the spring should be located so that it is on theleft side when facing unit. The blade should curvedownward with the rounded edges facing out-ward).

b. Insert left tab of horizontal deflector blade (withcoil spring intact) into hole and compress coilspring.

c. Insert other tab into hole on opposite side of unitheater.

Figure 7Detaching Horizontal Blades

Figure 8VerticalBladesInstalled

Figure 9Horizontal & VerticalBlades InstalledModels HO18 & HO24

Figure 10Horizontal &Vertical BladesInstalledModels HO33thru H193

RoundedEdges

SupportRod

CoilSpring

CoilSpring

CoilSpring

MountingFlange

(Top & Bottom)

VerticalDeflector

Blade

HorizontalDeflector

Blade

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○DEFLECTOR BLADE OPTIONS (CONT.)

22

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Figure 11Turncone InstallationModels CO42 thru C610

MountingBracket

Sheet MetalScrew

Weld Nutor

Blind Nut

Turncone MountingTurncone

Start sheet metal screws into 1/8" hole in mounting bracket.Fasten brackets to bottom cover of unit heater with machinescrews through the mounting brackets into the blind nuts.

Figure 12Louver InstallationModels CO42 thru C610

Weld Nutor

Blind Nut

Fasten louver mounting brackets to louver with screws.Fasten louver assembly to bottom cover of unit heater withmachine screws. Tighten all screws securely.

Figure 13Cone-Jet InstallationModels CO42 thru C610

MountingBracketUse only top

mounting holefor CO42 & CO59

Fasten cone-jet mounting bracket to cone-jet with screws.Fasten cone-jet to bottom cover with machine screws.

Weld Nutor

Blind Nut

MountingBracket

Fasten anemostat mounting bracket to anemostat with thescrew & nuts. Fasten assembly to unit. It may be necessaryto remove the outlet fan guard.

Weld Nut orBlind Nut

Figure 143 & 4 Cone Anemostat InstallationModels CO42 & CO59, C139 thru C500

NOTE:Some vertical unit heaters will not have weld nuts in thebottom cover. In these cases, insert the blind nuts includedin the kit into the holes in the bottom cover from the outside.The air deflector is then mounted to the unit by tighteningmachine screws through the mounting brackets into theblind nuts.

DEFLECTOR BLADE OPTIONS (CONT.)

23

ENGINEERING DATA ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

An understanding of forced air heating equipment is most easily obtained with a knowledge of the following terms.

ATR Air Temperature Rise. The difference between the entering air temperature and leaving air temperature due toamount of heat added.

CFM Volume of air moved in cubic feet per minute.EAT Entering air temperature.EDR Heat output measured in square feet of Equivalent Direct Radiation. (1 Ft.2EDR = 240 Btu @ 2 psi steam)EWT Entering water temperature,FPM Velocity of air leaving the coil in feet per minute.GPM The flow of water in gallons per minute.LAT Leaving air temperature.MBH One thousand btu per hourRPM Fan motor revolutions per minute.SUM Standard CFM. Air moved at standard temperature (68°F) and pressure (14.7 psi).WPD Water Pressure Drop. The resistance to the flow of water through a system created by friction between the

water and piping.WTD Water Temperature Drop. The difference between the entering water temperature and the leaving water

temperature due to amount of heat removed.

All types of forced air heating equipment obey certain thermodynamic principles. Among them are:

General

In analyzing mathematical data, such as capacities andcorrection factors, keep in mind that not all points can belisted in tables. Normal engineering practice allows thatlinear relationships, such as the tables on page 18, be plottedon ordinary graph paper.

Once two or more values have been correctly plotted, astraight line will be indicated. This process will allow you toselect accurate values between points published on yourcharts and tables.

Many times, the conditions of service differ from the tablespublished in this catalog. Even though thermodynamic prin-ciples discussed above apply rigidly, correction factors maynot. For example, the correction factor for differing steampressures for Horizontal Discharge unit Heaters which areof the blow-through design differ from the corection fac-tors for Vertical Discharge unit Heaters, which are of thedraw-through design.

RPMf

RPMi

ATR = BtuCFM x 1.08

LAT = EAT + BtuCFM x 1.08

WTD = Btu

GPM x 500

CFMf

CFMi

RPMf

RPMi

= Btuf =

, or WPDf = WPD

i

� �.6

x Btui

GPM = Btu

WTD x 500

HORIZONTAL UNITS

CFMf = CFM

i LAT + 460530

VERTICAL UNITSCFM

f = Btu (LAT + 460)

ATR x 575

WPDf

WPDi

GPMf

GPMi

=2

2

GPMf

GPMi

2

where i = initial value, andf = final value

� �

� �

24

ENGINEERING DATA: STEAM UNIT HEATER SELECTION ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Unit Steam TEMPERATURE OF ENTERING AIR °FHeater PressType Psig -10° 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100°

0 1.54 1.45 1.37 1.27 1.19 1.11 1.03 0.96 0.88 0.81 0.74 0.672 1.59 1.50 1.41 1.32 1.24 1.16 1.08 1.00 0.93 0.85 0.78 0.715 1.64 1.55 1.46 1.37 1.29 1.21 1.13 1.05 0.97 0.90 0.83 0.7610 1.73 1.64 1.55 1.46 1.38 1.29 1.21 1.13 1.06 0.98 0.91 0.8415 1.80 1.71 1.61 1.53 1.44 1.34 1.28 1.19 1.12 1.04 0.97 0.9020 1.86 1.77 1.67 1.58 1.50 1.42 1.33 1.25 1.17 1.10 1.02 0.9530 1.97 1.87 1.78 1.68 1.60 1.51 1.43 1.35 1.27 1.19 1.12 1.0440 2.06 1.96 1.86 1.77 1.68 1.60 1.51 1.43 1.35 1.27 1.19 1.1250 2.13 2.04 1.94 1.85 1.76 1.67 1.58 1.50 1.42 1.34 1.26 1.1960 2.20 2.09 2.00 1.90 1.81 1.73 1.64 1.56 1.47 1.39 1.31 1.2470 2.26 2.16 2.06 1.96 1.87 1.78 1.70 1.61 1.53 1.45 1.37 1.2975 2.28 2.18 2.09 1.99 1.90 1.81 1.72 1.64 1.55 1.47 1.40 1.3280 2.31 2.21 2.11 2.02 1.93 1.84 1.75 1.66 1.58 1.50 1.42 1.3490 2.36 2.26 2.16 2.06 1.97 1.88 1.79 1.71 1.62 1.54 1.46 1.38100 2.41 2.31 2.20 2.11 2.02 1.93 1.84 1.75 1.66 1.58 1.50 1.42125 2.51 2.41 2.31 2.21 2.11 2.02 1.93 1.84 1.76 1.68 1.59 1.51150 2.60 2.50 2.40 2.30 2.20 2.11 2.02 1.93 1.84 1.76 1.67 1.590 1.49 1.41 1.33 1.25 1.18 1.11 1.03 0.96 0.90 0.83 0.76 0.692 1.52 1.45 1.37 1.29 1.22 1.15 1.07 1.00 0.93 0.86 0.80 0.735 1.58 1.50 1.42 1.34 1.27 1.20 1.12 1.05 0.98 0.91 0.85 0.7810 1.64 1.57 1.49 1.41 1.34 1.27 1.19 1.12 1.05 0.98 0.91 0.8515 1.70 1.62 1.55 1.47 1.40 1.32 1.25 1.18 1.11 1.04 0.97 0.9020 1.75 1.67 1.60 1.52 1.45 1.37 1.30 1.23 1.16 1.09 1.02 0.9630 1.83 1.75 1.68 1.61 1.53 1.46 1.39 1.32 1.25 1.18 1.11 1.0440 1.90 1.82 1.75 1.68 1.61 1.53 1.46 1.39 1.32 1.25 1.18 1.1150 1.96 1.87 1.81 1.74 1.67 1.59 1.52 1.45 1.38 1.31 1.24 1.1760 2.02 1.94 1.87 1.79 1.72 1.64 1.57 1.50 1.43 1.36 1.29 1.2270 2.07 1.99 1.92 1.84 1.76 1.69 1.62 1.55 1.47 1.40 1.33 1.2775 2.10 2.02 1.94 1.86 1.79 1.71 1.64 1.57 1.49 1.42 1.36 1.2980 2.11 2.04 1.96 1.88 1.80 1.73 1.66 1.59 1.51 1.44 1.38 1.3190 2.15 2.08 2.00 1.92 1.84 1.77 1.69 1.62 1.55 1.48 1.41 1.34100 2.19 2.11 2.03 1.95 1.88 1.80 1.73 1.66 1.59 1.52 1.45 1.38125 2.27 2.19 2.11 1.99 1.91 1.88 1.81 1.74 1.67 1.60 1.53 1.46150 2.34 2.26 2.18 2.10 2.03 1.95 1.88 1.81 1.74 1.67 1.60 1.53

Table 15—Steam Heating Capacity Conversion Factors

In using these conversion factors, it will be necessary to refer to the direct reading tables of standard operating conditions onpages 5 and 6.

To determine the heating capacity (BTU/HR) of a unit heater at any steam pressure and entering air temperature,multiply the rated capacity (2 lbs. steam, 60°F entering air) on pages 5 or 6 by the factor from this table.

HorizontalDelivery

Example 1:Determine the capacity (Btu/hr.) final air temperature, and condensate(lbs./hr.) of an H165C at 15 lbs. steam and 50°F entering air.

Capacity conversion factor from table 15 = 1.28. Standard ratedcapacity of H165C from page = 165,000 Btu/hr.

Corrected capacity of HS-165165,000 x 1.28 = 211,200 Btu/hr.

Air temperature rise conversion factor from table 16 = 1.24Air temperature rise of H165C from page 5 = 106°F - 60°F = 46°F

Corrected air temperature rise of H165C46°F x 1.24 = 57°F

Final air temperature of H165C at 15 lbs. steam and 50°F enteringair,

50°F + 57°F = 107°F final air temperature

Condensate (lbs/hr.) = Btu/hr (corrected) h (Btu/lb)

= 211,200 Btu/hr. 945.5

Condensate = 223.4 lbs/hr.h = latent heat (Btu/hr) from table 17Refer to table 14 for mounting height correction.

How to use conversion factors

Example 2:Select a vertical unit heater to deliver approximately 300,000 Btu/hr at 100 lbs steam and 60°F entering air.

Capacity conversion factor from table 15 = 1.66

Divide the desired capacity by this factor.

300,000 Btu/hr = 180,700 Btu/hr (capacity at 2 lbs steam, 1.66 60°F ent. air)

Since steam pressure exceeds 30 lbs, a lot outlet temperature modelwill be selected.

From page 6, select C247L having a standard capacity of 190,000Btu/hr.

Actual capacity of C247L at 100 lbs. and 60°F entering air,

190,000 Btu/hr x 1.66 = 315,400 Btu/hr.Final air temperature and condensate lbs/hr may be calculated asshown in example 1.

Refer to table 14 for mounting height correction.

VerticalDelivery

25

ENGINEERING DATA: STEAM UNIT HEATER SELECTION (CONT.) ○ ○ ○ ○ ○ ○ ○

Unit Steam TEMPERATURE OF ENTERING AIR °FHeater PressType Psig -10° 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100°

0 1.33 1.28 1.24 1.17 1.12 1.07 1.01 0.96 0.896 0.841 0.782 0.7212 1.38 1.33 1.27 1.22 1.17 1.11 1.06 1.00 0.937 0.882 0.825 0.7645 1.43 1.38 1.33 1.27 1.21 1.16 1.11 1.05 0.998 0.934 0.877 0.81810 1.50 1.45 1.40 1.35 1.29 1.24 1.19 1.13 1.07 1.02 0.951 0.90315 1.56 1.51 1.46 1.42 1.36 1.31 1.24 1.19 1.14 1.08 1.02 0.96920 1.61 1.56 1.52 1.46 1.41 1.36 1.30 1.25 1.19 1.14 1.08 1.0230 1.70 1.65 1.61 1.55 1.51 1.46 1.40 1.35 1.29 1.24 1.18 1.1240 1.78 1.73 1.68 1.62 1.58 1.54 1.48 1.43 1.38 1.32 1.26 1.2150 1.84 1.79 1.74 1.69 1.65 1.60 1.55 1.50 1.45 1.39 1.33 1.2860 1.91 1.86 1.81 1.75 1.71 1.66 1.61 1.56 1.50 1.45 1.40 1.3370 1.95 1.91 1.86 1.81 1.76 1.71 1.66 1.61 1.56 1.51 1.45 1.3975 1.97 1.93 1.89 1.84 1.79 1.74 1.69 1.64 1.58 1.53 1.47 1.4280 2.00 1.95 1.91 1.86 1.82 1.76 1.72 1.66 1.61 1.56 1.49 1.4490 2.04 2.00 1.95 1.90 1.86 1.81 1.75 1.70 1.65 1.60 1.54 1.49100 2.08 2.04 1.99 1.95 1.89 1.85 1.79 1.75 1.69 1.64 1.59 1.53125 2.17 2.13 2.09 2.04 1.99 1.94 1.89 1.84 1.79 1.74 1.68 1.63150 2.25 2.21 2.17 2.12 2.07 2.03 1.98 1.93 1.87 1.83 1.77 1.710 1.36 1.31 1.25 1.19 1.13 1.08 1.02 0.96 0.90 0.84 0.78 0.722 1.41 1.35 1.29 1.24 1.18 1.12 1.06 1.00 0.94 0.88 0.82 0.765 1.46 1.40 1.35 1.29 1.23 1.17 1.12 1.06 1.00 0.94 0.88 0.8210 1.54 1.48 1.43 1.37 1.31 1.25 1.20 1.14 1.08 1.02 0.96 0.8915 1.61 1.55 1.49 1.44 1.38 1.32 1.26 1.20 1.14 1.09 1.02 0.9720 1.67 1.61 1.55 1.50 1.44 1.38 1.32 1.26 1.20 1.15 1.08 1.0130 1.77 1.71 1.65 1.60 1.54 1.48 1.42 1.36 1.30 1.25 1.18 1.1240 1.85 1.79 1.74 1.68 1.62 1.56 1.51 1.45 1.39 1.33 1.27 1.2150 1.92 1.86 1.81 1.75 1.69 1.64 1.58 1.52 1.46 1.40 1.34 1.2860 1.99 1.93 1.88 1.82 1.76 1.70 1.65 1.58 1.53 1.47 1.41 1.3570 2.05 1.99 1.94 1.88 .1.82 1.76 1.70 1.65 1.59 1.53 1.47 1.4175 2.08 2.02 1.96 1.91 1.85 1.79 1.73 1.67 1.62 1.56 1.50 1.4380 2.10 2.04 1.99 1.93 1.87 1.81 1.75 1.70 1.64 1.58 1.52 1.4690 2.15 2.09 2.04 1.00 1.92 1.86 1.80 1.74 1.69 1.63 1.57 1.51100 2.19 2.14 2.08 2.02 1.97 1.91 1.85 1.79 1.73 1.67 1.61 1.55125 2.29 2.24 2.18 2.12 2.07 2.01 1.95 1.89 1.83 1.77 1.71 1.65150 2.39 2.33 2.27 2.22 2.16 2.10 2.04 1.99 1.93 1.87 1.81 1.75

Table 16—Air Temperature Rise Conversion FactorsTo determine the air temperature rise of a unit heater at any steam pressure and entering air temperature, subtract 60°F from thefinal air temperature on page 5 or 6. Multiply the resultant air temperature rise by the factor from this table. Add the result to theactual entering air temperature to determine the new final air temperature.

HorizontalDelivery

VerticalDelivery

Gauge Temper- Latent Gauge Temper- Latent Gauge Temper- Latent Gauge Temper- LatentPressure ature Heat Btu Pressure ature Heat Btu Pressure ature Heat Btu Pressure ature Heat BtuLbs. Per Degrees per Lb. Lbs. Per Degrees per Lb. Lbs. Per Degrees per Lb. Lbs. Per Degrees per Lb.Sq. In. F. (h) Sq. In. F. (h) Sq. In. F. (h) Sq. In. F. (h)

0 212.0 970.3 32 276.8 926.6 66 312.6 899.9 100 337.9 880.02 218.5 966.2 34 279.4 924.7 68 314.4 898.6 103 339.8 878.54 224.4 962.4 36 281.9 922.9 70 316.0 897.3 106 341.7 876.95 227.2 960.6 38 284.3 921.1 72 317.7 896.0 109 343.6 875.46 229.8 958.8 40 286.7 919.3 74 319.3 894.8 112 345.4 873.98 234.8 955.6 42 289.0 917.6 76 320.9 893.5 115 347.2 872.510 239.4 952.5 44 291.3 915.9 78 322.4 892.3 118 348.9 871.012 243.7 949.6 46 293.5 914.3 80 323.9 891.1 121 350.7 869.614 247.8 946.8 48 295.6 912.7 82 325.4 889.9 124 352.4 868.216 251.6 944.2 50 297.7 911.2 84 326.9 888.8 125 352.9 867.818 255.3 941.7 52 299.7 909.7 86 328.4 887.6 127 354.0 866.920 258.8 939.3 54 301.7 908.2 88 329.8 886.5 130 355.7 865.522 262.1 936.9 56 303.6 906.7 90 331.2 885.4 133 357.3 864.124 265.3 934.7 58 305.5 905.3 92 332.5 884.3 136 358.9 862.926 268.3 932.5 60 307.3 903.9 94 333.9 883.2 139 360.4 861.528 271.3 930.5 62 309.1 902.5 96 335.2 882.1 142 362.0 860.330 274.1 928.5 64 310.9 901.2 98 336.6 881.1 145 363.5 859.0— — — — — — — — — 150 365.9 856.9

Table 17—Properties of Steam

NOTE: Low Outlet Temperature models are recommended when unit heahters are to operate at steam pressures shown in shaded area.

26

ENGINEERING DATA: HOT WATER UNIT HEATER SELECTION ○ ○ ○ ○ ○ ○ ○ ○

In using these formula and conversion factors, it will be necessary to refer to the direct reading tables of standard operatingconditions on pages 7 or 8.

Example 1:Determine the capacity (Btu/hr), Gpm, water temperature drop andfinal air temperature of an H086C at 240°F entering water tem-perature and 70°F entering air temperature.

Refer to page , standard operating conditions. Capacity of anH086C at standard conditions (200°F water, 60°F air) is 62,600 Btu/hr at 6.5 Gpm.

Conversion factor for actual operating conditions from table 18 =1.201.

Calculate actual Btu/hr. of H086C at actual operating conditions of240°F water at 6.5 Gpm, 70°F air.

Btu0 = 62,600 x 1.201

Btu0 = 75,182 Btu/hr @ 6.5 Gpm

Calculate required Gpm.

G0 = must remain at 6.5 since the standard conditions were

based on this flow rate.Calculate water temperature drop at operating conditions.

(Formula 3)

D0 = Btu

0

500 x G0

D0 = 75,182

480 x 6.5

D0 = 24°F water temperature drop.

Calculate final air temperature at operating conditions.

(Formula 1)

F0 = E

0 + (460 + E

0) X Btu

0

576 Cfm0

F0 = 70 + 460 + 70 X 75,182

576 1,340

F0 = 70 + 52

F0 = 122°F final air temperature

Refer to table 14 for maximum mounting height correction. At240°F the correction factor is .9. Multiply max. mounting height ofH086C from page 11 by .9.

Example 2:Select a vertical type unit heater that will deliver 150,000 Btu/hrwith 160°F entering water and 60°F entering air. Determine re-quired Gpm, resultant water temperature drop and final air tem-perature.


Divide 150,000 Btu/hr by 0.714 to obtain performance at standardconditions. (200°F water, 60°F air)

150,000 Btu/hr = 210,000 Btu/hr (standard conditions)

0.714

Refer to standard operating conditions — page 7.

A C279C delivers 210,000 Btu/hr (standard conditions)

Example 2: (continued)At 21.0 Gpm.

Actual capacity (Btu0) of C279C at 160°F EWT and 60°F EAT is

210,000 Btu/hr x 0.714 = 150,000 Btu/hr. @ 21 Gpm (G0).

Final air temperature and water temperature drop can be calcu-lated using formulas 2 and 3. Refer to table 14 for maximum mount-ing height correction.

Note: Refer to hot water performance curve for C333C. Note thata C333C could have been selected to deliver the 210,000 Btu/hr atstandard conditions at about 11 Gpm. A new water temperaturedrop and final air temperature could be calculated for the C333C.

Example 3:Select a horizontal type unit heater that will deliver 80,000 Btu/hrwith 140°F water at 10 Gpm and 70°F entering air. Determine wa-ter temperature drop and final air temperature.


Divide 80,000 Btu/hr by 0.494 to obtain performance at standardconditions. (200°F water, 60°F air)

80,000 Btu/hr = 161,943 Btu/hr (standard conditions)

0.494

Enter standard hot water performance curves for horizontal unitsand locate the first unit that will deliver 161,943 Btu/hr (standardconditions) at 10 Gpm.

An H258C will deliver 170,000 Btu/hr at 10 Gpm (standard condi-tions).

Calculate Btu/hr. of H258C at actual operating conditions of 140°Fwater, at 10 Gpm, 70°F air.

Btu0 = 170,000 x 0.494

Btu0 = 83,980 Btu/hr

Calculate water temperature drop at operating conditions (Formula3).

D0 = Btu

0

480 x G0

D0 = 83,980

480 x 10

D0 = 18°F water temperature drop.

Calculate final air temperature at operating conditions.

(Formula 1)

F0 = E

0 + (460 + E

0) X Btu

0

576 Cfm0

F0 = 70 + 460 + 70 X 83,980

576 4,560

F0 = 70 + 17

F0 = 87°F final air temperature.

Refer to table 14 for maximum mounting height correction.

Identification of Symbols FormulasE = entering air temperature (°F)F = final air temperature (°F)D = water temperature drop (°F)G = gallons per minute (Gpm)

Subscript

o = actual operating conditions

F0 = E

0 + (460 + E

0) X Btu

0 576 Cfm

0

F0 = 70 + 460 + 70 X 83,980

576 4,560

1.

2.

D0 = Btu

0

480 x G0

3.

27

ENGINEERING DATA: HOT WATER UNIT HEATER SELECTION (CONT.) ○ ○

Entering TEMPERATURE OF ENTERING AIR °FWaterTemp. (°F) 0° 10° 20° 30° 40° 50° 60° 70° 80° 90° 100°

60 0.462 0.380 0.300 0.222 0.146 0.072 0 0 0 0 070 0.539 0.456 0.375 0.296 0.219 0.145 0.071 0 0 0 080 0.615 0.531 0.450 0.370 0.293 0.217 0.143 0.071 0 0 090 0.692 0.607 0.524 0.444 0.366 0.289 0.214 0.141 0.070 0 0100 0.769 0.683 0.599 0.518 0.439 0.361 0.286 0.212 0.140 0.069 0110 0.846 0.759 0.674 0.592 0.512 0.434 0.357 0.283 0.210 0.138 0.068120 0.923 0.835 0.749 0.666 0.585 0.506 0.429 0.353 0.279 0.207 0.137130 1.000 0.911 0.824 0.740 0.658 0.578 0.500 0.424 0.349 0.276 0.205140 1.077 0.987 0.899 0.814 0.731 0.651 0.571 0.494 0.419 0.345 0.273150 1.154 1.063 0.974 0.888 0.805 0.723 0.643 0.565 0.489 0.414 0.342160 1.231 1.139 1.049 0.962 0.878 0.795 0.714 0.636 0.559 0.483 0.410170 1.308 1.215 1.124 1.036 0.950 0.867 0.786 0.706 0.629 0.552 0.478180 1.385 1.291 1.199 1.110 1.024 0.940 0.857 0.777 0.699 0.621 0.547190 1.462 1.367 1.274 1.184 1.097 1.012 0.929 0.848 0.768 0.690 0.615200 1.539 1.443 1.349 1.258 1.170 1.084 1.000 0.918 0.838 0.759 0.684210 1.615 1.519 1.424 1.332 1.243 1.157 1.071 0.989 0.908 0.828 0.752220 1.692 1.594 1.499 1.406 1.312 1.229 1.143 1.060 0.978 0.897 0.820230 1.769 1.670 1.573 1.480 1.390 1.301 1.214 1.130 1.048 0.966 0.889240 1.846 1.746 1.649 1.554 1.463 1.373 1.286 1.201 1.118 1.035 0.957250 1.923 1.822 1.723 1.628 1.536 1.446 1.357 1.272 1.188 1.104 1.025260 2.000 1.898 1.798 1.702 1.609 1.518 1.429 1.342 1.257 1.173 1.094270 2.077 1.974 1.873 1.776 1.682 1.590 1.500 1.413 1.327 1.242 1.162280 2.154 2.050 1.948 1.850 1.755 1.663 1.571 1.483 1.397 1.311 1.230290 2.231 2.126 2.023 1.924 1.829 1.734 1.643 1.554 1.467 1.380 1.300300 2.308 2.202 2.098 1.998 1.902 1.807 1.714 1.625 1.537 1.449 1.367

Table 18—Hot Water Heating Capacity Conversion FactorsTo determine the heating capacity (Btu/hr) of a unit heater at any entering water temperature and entering air temperature,multiply the capacity at 200° E.W.T. and 60°F E.A.T. by the factor from this table. Note: GPM must be identical to that at 200°FE.W.T. and 60°F E.A.T. Conversion factors in Table 18 may be used with standard hot water data on pages 7 or 8.

Coil CoilMin. Volume Min. Volume

Type Model GPM (Gals.) Type Model GPM (Gals.)H018C 0.15 0.13 C042C 0.30 0.15H018L 0.15 0.13 C042L 0.30 0.15H024C 0.15 0.13 C059C 0.45 0.23H024L 0.15 0.13 C059L 0.45 0.23H033C 0.20 0.41 C078C 0.60 0.31H033L 0.20 0.41 C078L 0.60 0.31H047C 0.20 0.41 C095C 0.75 0.38H047L 0.20 0.41 C095L 0.75 0.38H063C 0.20 0.66 C139C 0.60 0.43H063L 0.20 0.66 C139L 0.60 0.43H086C 0.20 0.66 C161C 0.75 0.54

Horizontal H086L 0.20 0.66 C161L 0.75 0.54Delivery H108C 0.20 0.98 Vertical C193C 0.90 0.65

H108L 0.20 0.98 Delivery C193L 0.90 0.65H121C 0.20 0.98 C212C 1.20 0.86H121L 0.20 0.98 C212L 1.20 0.86H165C 0.20 1.35 C247C 1.20 0.86H165L 0.20 1.35 C247L 1.20 0.86H193C 0.40 1.45 C278C 1.35 0.97H258C 0.40 2.20 C279L 1.35 0.97H258L 0.40 2.20 C333C 1.35 1.24H290C 0.40 2.20 C333L 1.35 1.24H290L 0.40 2.20 C385C 1.35 1.24H340C 0.40 2.50 C385L 1.35 1.24H340L 0.40 2.50 C500C 1.80 1.66

C500L 1.80 1.66C610C 3.60 1.98C610L 3.60 1.98C952C 3.60 3.72

Table 20—Minimum Water Flow and Water Volume (Gallons)

Percent Average Solution Temperature (°F)EthyleneGlycol 100 150 200 250

40 0.855 0.875 0.910 0.92550 0.820 0.850 0.870 0.90060 0.770 0.800 0.830 0.85070 0.725 0.750 0.780 0.82580 0.680 0.715 0.740 0.77090 0.630 0.666 0.695 0.725100 0.586 0.620 0.645 0.680

Table 19—Ethylene Glycol Correction Factors

Table 19 lists the correction factors for various percentages of ethylene glycolin water. use the factors to cvorrect the heating capacity of unit heaters whenusing an ethylene glycol solution. Follow the normal procedures in determiningthe heating capacity of a unit heater at any water temperature and enteringair temperature, then apply the correction factor from Table 19 to determinethe corrected heating capacity based on an ethylene glycol solution.

28

ENGINEERING DATA: MOTORS ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Table 21—Motor Characteristics

Motors are produced, rated, and tested by reputable motor manufacturers in accordance with NEMA standardsand carry the motor manufacturer's standard warranty. All motors will operate in a 104°F ambient temperature.

*A solid-state multi-speed controller is available for models H018 thru H108 with voltage/type code (AATE).

Totally enclosed Totally enclosedMotor Type with with

Thermal overload Thermal overload Totally enclosed Totally enclosedVoltage/Type Code (AATE) (AGTE) (CDTE) (ANTE)Voltage/Hertz/Phase 115/60/1 230/60/1 200/60/3 230/460/60/3Unit Heater

Type Model Amps Hp Rpm Amps Hp Rpm Amps Hp Rpm Amps Hp RpmH018 0.80 1/60 1550 0.44 1/25 1550 --- --- --- --- --- ---H024 1.60 1/25 1550 0.44 1/25 1550 --- --- --- --- --- ---H033 1.60 1/25 1550 1.00 1/8 1725 --- --- --- --- --- ---H047 2.20 1/12 1550 1.00 1/8 1725 1.20 1/4 1725 1.4/.7 1/4 1725H063 2.20 1/12 1550 1.00 1/8 1725 1.20 1/4 1725 1.4/.7 1/4 1725H086 2.30 1/8 1625 1.00 1/8 1725 1.20 1/4 1725 1.4/.7 1/4 1725

Horizontal H108 2.30 1/8 1625 1.00 1/8 1725 1.20 1/4 1725 1.4/.7 1/4 1725Delivery H121 2.80 1/6 1075 1.54 1/6 1075 1.90 1/3 1140 2.1/1.05 1/3 1140

H165 5.40 1/3 1075 2.23 1/3 1075 1.90 1/3 1140 2.1/1.05 1/3 1140H193 5.40 1/3 1075 2.23 1/3 1075 1.90 1/3 1140 2.1/1.05 1/3 1140H258 7.50 1/2 1075 3.50 1/2 1075 2.60 1/2 1140 3.0/1.5 1/2 1140H290 7.50 1/2 1075 3.50 1/2 1075 2.60 1/2 1140 3.0/1.5 1/2 1140H340 7.50 1/2 1075 3.50 1/2 1075 2.60 1/2 1140 3.0/1.5 1/2 1140C042 1.90 1/30 1050 1.28 1/15 1050 1.90 1/3 1140 2.1/1.05 1/3 1140C059 1.90 1/30 1050 1.28 1/15 1050 1.90 1/3 1140 2.1/1.05 1/3 1140C078 2.40 1/15 1050 1.28 1/15 1050 1.90 1/3 1140 2.1/1.05 1/3 1140C095 2.40 1/15 1050 1.28 1/15 1050 1.90 1/3 1140 2.1/1.05 1/3 1140C139 2.80 1/6 1075 1.54 1/6 1075 1.90 1/3 1140 2.1/1.05 1/3 1140C161 5.40 1/3 1075 2.23 1/3 1075 1.90 1/3 1140 2.1/1.05 1/3 1140C193 5.40 1/3 1075 2.23 1/3 1075 1.90 1/3 1140 2.1/1.05 1/3 1140

Vertical C212 5.40 1/3 1075 2.23 1/3 1075 1.90 1/3 1140 2.1/1.05 1/3 1140Delivery C247 7.50 1/2 1075 3.50 1/2 1075 2.60 1/2 1140 3.0/1.5 1/2 1140

C279 7.50 1/2 1075 3.50 1/2 1075 2.60 1/2 1140 3.0/1.5 1/2 1140C333 8.80 3/4 1125 4.40 3/4 1125 3.70 3/4 1140 3.5/1.75 3/4 1140C385 — — — — — — 4.00 1 1140 4.0/2.0 1 1140C500 — — — — — — 5.80 1 1/2 1140 5.2/2.6 1 1/2 1140C610 — — — — — — 5.80 1 1/2 1140 5.2/2.6 1 1/2 1140C952 — — — — — — — — — 6.8/3.4 2 1140

Explosion Explosion ExplosionMotor Type Proof with Proof with Proof with

Thermal overload Thermal overload Totally enclosed Thermal OverloadVoltage/Type Code (AAXP) (ANXP) (ASTE) (ANXP)Voltage/Hertz/Phase 115/60/1 230/460/60/3 575/60/3 575/60/3Unit Heater

Type Model Amps Hp Rpm Amps Hp Rpm Amps Hp Rpm Amps Hp RpmH018 3.1 1/6 1175 --- --- --- --- --- --- --- --- ---H024 3.1 1/6 1175 --- --- --- --- --- --- --- --- ---H033 3.1 1/6 1175 --- --- --- --- --- --- --- --- ---H047 3.1 1/6 1175 --- --- --- --- --- --- --- --- ---H063 3.1 1/6 1175 --- --- --- --- --- --- --- --- ---H086 3.1 1/6 1175 --- --- --- --- --- --- --- --- ---

Horizontal H108 3.1 1/6 1175 --- --- --- --- --- --- --- --- ---Delivery H121 4.1 1/6 1140 1.5/.75 1/3 1140 0.84 1/3 1140 --- --- ---

H165 6.1 1/3 1140 1.5/.75 1/3 1140 0.84 1/3 1140 --- --- ---H193 6.1 1/3 1140 1.5/.75 1/3 1140 0.84 1/3 1140 --- --- ---H258 7.2 1/2 1140 2.0/1.0 1/2 1140 0.92 1/2 1140 0.76 1/2 1140H290 7.2 1/2 1140 2.0/1.0 1/2 1140 0.92 1/2 1140 0.76 1/2 1140H340 7.2 1/2 1140 2.0/1.0 1/2 1140 0.92 1/2 1140 0.76 1/2 1140C042 4.1 1/6 1140 --- --- --- 0.84 1/3 1140 --- --- ---C059 4.1 1/6 1140 --- --- --- 0.84 1/3 1140 --- --- ---C078 4.1 1/6 1140 --- --- --- 0.84 1/3 1140 --- --- ---C095 4.1 1/6 1140 --- --- --- 0.84 1/3 1140 --- --- ---C139 4.1 1/6 1140 1.5/.75 1/3 1140 0.84 1/3 1140 --- --- ---C161 6.1 1/3 1140 1.5/.75 1/3 1140 0.84 1/3 1140 --- --- ---C193 6.1 1/3 1140 1.5/.75 1/3 1140 0.84 1/3 1140 --- --- ---

Vertical C212 6.1 1/3 1140 1.5/.75 1/3 1140 0.84 1/3 1140 --- --- ---Delivery C247 7.2 1/2 1140 2.0/1.0 1/2 1140 0.92 1/2 1140 0.76 1/2 1140

C279 7.2 1/2 1140 2.0/1.0 1/2 1140 0.92 1/2 1140 0.76 1/2 1140C333 --- --- --- --- --- --- 1.24 3/4 1140 1.4 1 1140C385 --- --- --- 3.5/1.75 1 1140 1.6 1 1140 1.4 1 1140C500 --- --- --- 5.8/2.9 1 1/2 1140 2 1 1/2 1140 2.32 1 1/2 1140C610 --- --- --- 5.8/2.9 1 1/2 1140 2 1 1/2 1140 2.32 1 1/2 1140C952 --- --- --- 6.2/3.1 2 1140 --- --- --- --- --- ---

29

ENGINEERING DATA: MOTORS (CONT.) ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Motor Codes Defined

Code (AATE): Motors are 115 volt, 60 Hertz, single phase,totally enclosed, with built-in thermal overload protection.Horizontal models H018 through H063 and vertical modelsC042 through C095 have shaded-pole motors. Horizontalmodels H086 through H340 and vertical models V139 throughV333 have motors with a permanent split capacitor to mini-mize current draw.

Code (AGTE): Motors are 230 volt, 60 Hertz, single phase,totally enclosed with built-in thermal overload protection.Horizontal models H018 through H063 and vertical modelsC042 through C095 have shaded-pole motors. Horizontalmodels H086 through H340 and vertical models C139 throughC333 have motors with a permanent split capacitor to mini-mize current draw.

Code (CDTE): Motors are 200 volt, 60 Hertz, three phase,totally enclosed, polyphase induction type.

Code (ANTE): Motors are 230/460 volt, 60 Hertz, three phase,totally enclosed, polyphase induction type.

Code (ASTE): Motors are 575 volt, 60 Hertz, three phase,totally enclosed, polyphase induction type.

Code (AAXP): Motors are 115 volt, 60 Hertz, single phase,explosion-proof, totally enclosed, with built-in thermal over-load protection, split-phase type. Canadian Standards Asso-ciation (CSA) requirements state that explosion-proof unitsmay not be used with a fluid temperature in excess of 329°For 100 psi and still maintain their explosion-proof rating.

Code (ANXP): Motors are 230/460 volt, 60 Hertz, three-phase,explosion-proof, totally enclosed, with built-in thermal over-load protection, polyphase induction type.

Code (ASXP): Motors are 575 volt, 60 Hertz, three-phase,explosion proof, totally enclosed with built-in thermal over-load protection, polyphase induction type.

Explosion-Proof Motors: Explosion-proof motors offeredwith Power Codes 06 and 09 are suitable for Class I, GroupD, Class II, Groups F and G, Class III atmospheres. CanadianStandards Association (CSA) requirements state that explo-sion-proof units may not be used with a fluid temperature inexcess of 329°F or 100 psi and still maintain their explosion-proof rating.

Class I, Group D motors are for operation in areas containinggasoline, petroleum, naphtha, benzine, butane, propane,alcohol, acetone, benzol, lacquer-solvent vapors, or naturalgas.

Class II, Group F motors are for operation in areas containingcarbon black coal, or coke dust.

Class II, Group G motors are for operation in areas contain-ing flour, starch, or grain dust.

30

Piping1. Branch piping to and from unit heater should include

swing joints to allow for expansion and contraction ofthe piping without placing a strain on the unit heaterelement. On steam systems, the branch piping shouldbe taken off and returned above the centerline of thesupply and return lines.

2. Install pipe unions and shut-off valves in lines to andfrom each unit heater to allow maintenance orreplacement of unit without shutting down and drainingentire system. For hot water systems, include abalancing valve in return line for water flow regulation.A drain valve should also be provided below each unitheater to allow removal of water from the heating coilif located in an area subject to freezing.

3. In steam or hot water systems, rapid air removal isrequired because entrained air is a cause of corrosion.Hot water systems should be equipped with suitableair vent valves for rapid and complete removal of air atthe high points and ends of both supply and returnmains. Proper air venting for team systems can beachieved by use of a steam trap with an internal airvent.

4. Traps must be located below the outlet of the unit.Consult the trap manufacturer for specificrecommendations. Each steam unit heater should beprovided with a trap of sufficient size and capacity topass a minimum of twice the normal amount of

condensation released by the unit at the minimumdifferential pressure in the system. Trap capacity is basedon the pressure differential between supply and returnmains. Steam systems should be equipped with a floatand thermostatic trap or an inverted bucket trap withan air bypass.

5. It is advisable to use a pipe line strainer before eachsteam trap draining a unit heater. This protection willreduce the maintenance of the steam trap. Whenstrainers are used they should be installed between theunit heater and the trap and be the same size as thetrap tapping. In order to catch dirt and scale, thestrainer should have a screen perforation size smallerthan the trap orifices.

6. On systems where the steam supply to the unit heateris modulated or controlled by a motorized valve, avacuum breaker should be installed between unit outletand the trap. If a vacuum breaker is used, it should bein conjunction with a float and thermostatic trap.

7. Install a scale pocket at bottom of unit heater to collectdirt and scale as shown in illustrations. The pipediameter must be the same size as the unit connectionsand about six inches long.

8. Provide adequate pipe hangers, supports, or anchorsto secure the piping system independently of the unitheater.

Figure 15Suggested Piping Arrangements

BalancingValve

Hot Water Systems

BalancingValve

GateValve

Return Supply

GateValve

DrainValve

Model H

Automatic AirVent or Petcock

Pitch DownGateValve

Return SupplyPitch Down

Horizontal Unit Heater Connected toOverhead Hot Water Mains

Vertical Unit Heater Connected toLower Hot Water Mains

6" LongFull Size

Dirt Pocket

Steam Systems

GateValve

Union

SwingCheckValve

Return Main

InvertedBucket Trap

Model H

Float &Thermostatic

Trap

Pitch Down

GateValve

ReturnMain

Petcock forAir Removal

UsuallySlightly Open

Steam Main

Unit Heater Connection for High Pressure SteamUnit Heater Connection for Low Pressure

Steam — Open Gravity or Vacuum Return System

Model HPitch DownGateValve

High Pressure Thermostatic TrapMay be Used for Automatic

Venting

Union

15"

12"

10" Min.

6" LongFull Size

Dirt Pocket

Strainer

SteamMain

Gate Valve

○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ENGINEERING DATA: PIPING

31

MATERIAL SPECIFICATIONS ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Model Core Type Copper Tube CopperNo. Single Double Size— Tube Wall

Serpentine Serpentine Inches Thickness—InchesH018 X 5/8 OD 0.028H024 X -- 5/8 OD 0.028H033 X -- 1 OD 0.030H047 X -- 1 OD 0.030H063 X -- 1 OD 0.030H086 X -- 1 OD 0.030H108 X -- 1 OD 0.030H121 X -- 1 OD 0.030H165 X -- 1 OD 0.030H193 -- X 1 OD 0.030H258 -- X 1 OD 0.030H290 -- X 1 OD 0.030H340 -- X 1 OD 0.030

Table 22—Horizontal Units Material Specifications

Table 23—Vertical Units Material Specifications

All Model Sizes

Copper/Cupro-Nickel Tube Size 5/8" O.D.

Tube Wall Thickness 0.028"

Aluminum Fins 0.010"

Maximum Coil Rating Copper 150 PSI/375°F

Cupro-Nickel 250 PSI/400°F

ACCESSORIES ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Dunham-Bush offers a wide variety of accessories for your unit heater installation. These include thermostats,speed controls, manual starters, and air deflectors. Check with your sales representative for all of your accessoryrequirements.

TYPICAL SPECIFICATIONS ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○

Horizontal Unit Heaters

Horizontal delivery steam and hot water unit heaters casingsshall be constructed of steel which is finished with a tanpowder-coat paint for optimum corrosion resistance. Unitshall be equipped with two tapped holes in the casing topfor unit suspension so that the unit weight shall not besupported by supply or return piping.

The condenser coil shall be of the serpentine design andconstructed of (5/8" diameter, .028" wall thickness for H018& H024 sizes) (1" diameter, .030" wall thickness for H033 toH340 sizes) DPL type copper tubing mechanically bondedto aluminum fins for maximum heat transfer. The coil shallbe suitable for operating pressures up to 150 psi. ortemperatures up to 375°F. (Explosion-proof models havelimits per CSA of a maximum operating pressure of 100 psior 329°F to maintain their explosion-proof rating.) All jointsare to be brazed and all tubes are to have individualexpansion joints for optimum coil durability.

Supply and return headers shall be steel. The entire coilassembly shall be leak tested at 200 psi air pressure underwater.

Motor shall be totally enclosed with thermal overloadprotection and shall be suitable for use with (Select fromTable 21) power source.

Horizontal discharge unit heaters shall be equipped withindividually adjustable horizontal deflection louvers.(Vertical louvers for four way deflection are optional on unitsizes H018 through H193 and are standard on sizes H258through H340. See figures 7 through 10).

A safety fan guard shall be provided on all units. Fans to beof the aluminum blade with steel hub construction. Fansare to be balanced and selected specifically for the unitheater application.

Vertical delivery steam and hot water unit heater casingsshall be constructed of steel that is finished with a tanpowder coat paint for optimum corrosion resistance. (Unitsizes C042 through C279 shall be equipped with four tappedholes in the top cover for unit suspension with threadedrods, pipes, or hanger brackets). (Unit sizes C333 throughC952 shall be equipped with an angle iron mounting bracketto permit hook hoisting and mounting with suspensioncables, if desired. The bracket shall further be designed topermit unit suspension with four threaded rods, pipes, orbrackets).

The condenser coil shall be of the circular design to allowfor natural expansion. They shall be constructed of 5/8"diameter, .028 " wall thickness, DPL type copper tubingmechanically bonded to aluminum fins for maximum heattransfer. The coil shall be suitable for operating pressuresup to 150 psi. or temperatures up to 375°F. (Explosion-proof models have limits per CSA of a maximum operatingpressure of 100 psi or 329°F to maintain their explosion-proof rating). (Optional cupro-nickel coils with operatingpressures of up to 250 psi or 400°F are also available). Alltube joints are to be silver brazed for optimum coil durability.

Supply and return headers shall be steel. The entire coilassembly shall be leak tested at 200 psi. air pressure underwater.

Motor shall be totally enclosed with thermal overloadprotection and shall be suitable for use with (Select fromTable 21) power source.

Where specified, vertical discharge unit heaters shall beequipped with an optional air deflector (See figures 11through 14 for types).

A safety fan guard shall be provided on all units. Fans to beof the aluminum blade with steel hub construction. Fansare to be balanced and selected specifically for the unitheater application.

Vertical Unit Heaters

101 Burgess Road, Harrisonburg, VA 22801Phone: 540-434-0711 Fax: 540-434-4595

www.dunham-bush.comAugust 2000 Form No. 3005

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