UNIT HEATERS

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THIS CATALOGUE AVAILABLE ONLY FOR THE UNITS WITH 1 ROW COIL. USE SELECTION PROGRAM FOR 1 2 3 4 ROW COILS,UNDER ANY CONDITIONS. UNIT HEATERS,FEATURES RUGGED LONG LIFE CONSTRUCTION. BROAD RANGE OF APPLICATION Casing die formed reinforced steel. Hot water or steam ROSEMEX unit heaters provide Finish sheet metal chemically degreased phosphatized and. economical space comfort for industrial commercial and etched Semi gloss grey paint finish. institutional applications, Coil steel pipe headers copper tubes ribbed aluminum. Horizontal models H and HS in 13 sizes up to 524 MBH corrugated fins Is standard on all models All coils are tested. Vertical models V and VS in 13 sizes up to 602 5 MBH at 350 PSIG air pressure insubmerged water. Greater throw with low outlet temperature HS and Motors specially selected and tested thermally protected. VS units with high pressure steam permanently lubricated for a minimum of 20 000 hours on all. models Motors are totally enclosed airover, Maximum flexibility of air distribution with diffuser. arrangements Standart on horizontal and optional on vertical Motor mounts rugged corrosion resistant All motors or. models supports resiliently mounted, Units with special coil available on request copper fins on Fans aluminum blades sturdy balanced efficient and quiet.
copper tubes heresite coated coils or red brass tubes. EASY MAINTENANCE, HIGH PERFORMANCE All parts fully accessible for maintenance service or. More CFM for lower outlet air temperature replacement. Quieter operation with lower RPM motors Motors readily accessible on model H units and easily. removable through fan opening on model V units,Greater air throw and circulation. Top opening on V models helps recover warm air at ceiling APPEARANCE. Suitable for higher temperature drops Compact and attractive Modern design enhanced by. aluminium semi gloss finish, HS and VS units have wider fin spacing allowing for higher. CFM and higher outlet velocities for even greater throw. Guaranteed to be free from defects in material or,workmanship for a period of one year from date. of purchase,CUTAWAY VIEWS FIGURE 2,FIGURE 1 MODEL V.
MODEL H 1 Heavy gauge steel cabinet, 1 Heavy gauge steel cabinet 2 Speed grip nut for solid easy hanging of unit. 2 Speed grip nut for solid easy hanging of unit 3 One row coil with full header at each end for a. 3 One row coil with single connecting header on one side for full circuit. half circuit 4 Heavy duty motor designed for longer life permanently. 4 Heavy duty motor designed for longer life lubricated for a minimum of 20 000 hours. permanently lubricated for a minimum of 20 000 hours 5 Steel plate rubber mounted motor support. 5 Rugged protective motor mounts 6 Factory balanced quiet operating aluminum fan blades. 6 Adjustable louvers 7 Deep fan opening collar which encircles full depth of fan. 7 Louver fin diffusers blade for protection against damage and also for better air. 8 Sturdy balanced fan blade distribution,8 Header brazed to copper tubes. 9 Protective fan guard grille standart issued,UNIT HEATERS. GENERAL SELECTION UNIT HEATING, HEAT LOSSES Unit Heaters should be spotted to aim the discharge towards. Should be calculated according to ASHRAE Guide and to the source of heat loss but precautions should be taken to. Rosemex Selection Prog or other reliable sources avoid blasting people with the warm air mass Model H units. should be located to achieve maximum air rotation in the same. MODEL SELECTION direction at the outside walls, The model selected should be suitable for the type of building.
ECONOMY AND COMFORT, or area to be served Model H units are generally used with low. ceilings see Table 2 for mounting height and spread Model V Where individual comfort is not an important factor the prime. units are recommended with high ceilings They are particularly consideration is to design the most economical system which. efficient in plants warehouses or similar applications where will satisfy overall heating requirements Larger units requiring. they recover warm air which stratifies near ceilings see Table less piping are recommended Where the physical comfort of. 3 for mounting height and spread Model V unit heaters with the occupants is important several smaller units will provide. louver cone diffusers can also be used with higher ceilings quieter operation better heat distribution and more even. temperatures,NUMBER OF UNITS, Select required number of units to handle the heat losses and. also for proper air motion adequate coverage of the occupied For unit heater piping connections see AMCA Bulletin No 15. space and operation within permissible sound levels For. instance although one large unit may be sufficient for a certain Although the cone diffuser can be mounted on Model V it is recommended that. area two smaller units may be specified at a lower RPM for the cone diffuser be mounted approximately four inches below the fan collar using. quieter operation and to provide better heat distribution and fourbrackets not shown to provide optimum heat dispersion. circulation,SPOT HEATING, It is usually more effective to discharge air across instead. of into an open door The throw shown in the performance. tables applies to draft free buildings with relatively stable. temperatures When heating only a small area within a cold. environment experience shows that the published throw may. be reduced by as much as 50,UNIT HEATERS,HEATING STEAM CAPACITIES. HORIZONTAL PROJECTION,STEAM UNIT HEATERS LESS THAN 15 PSI.
STEAM 2 PSIG MOTOR SPREAD STEAM,CFM OUTLET,CAT ENT AIR 60 F 115V 1 60 SOUND 2 PSIG. NO COND FIN NOM NOM NOM CLASS,EDR MBH 60 F CITY H S. lb h TEMP HP RPM AMP, HS 25 109 27 2 26 2 113 1 20 1000 0 63 460 483 1 9 24. HS 31 130 32 3 31 2 102 1 20 1550 0 63 680 714 1 9 38. HS 39 162 40 3 38 9 121 1 20 1000 0 63 595 795 1 9 21. HS 47 193 48 0 46 4 109 1 20 1550 0 63 880 683 1 9 30. HS 43 174 43 4 41 9 114 1 12 1000 1 30 725 559 1 9 24. HS 51 213 53 0 51 2 102 1 12 1550 1 30 1120 756 2 9 41. HS 73 301 74 8 72 3 104 1 6 1075 2 80 1525 800 2 12 38. HS 95 396 98 4 95 1 109 1 6 1075 2 80 1800 442 2 14 46. HS 97 405 100 1 97 3 113 1 3 820 4 70 1685 540 2 14 43. HS 113 473 117 4 113 4 104 1 3 1100 4 70 2400 772 2 14 52. HS 117 490 121 9 117 7 113 1 3 850 4 70 2060 540 2 14 42. HS 137 572 142 0 137 2 103 1 3 1075 4 70 2930 772 2 14 50. HS 175 729 182 0 175 0 120 1 3 820 4 70 2690 467 3 15 49. HS 205 851 211 2 204 2 109 1 3 1100 4 70 3830 667 4 15 59. HS 265 1106 274 7 265 4 109 1 3 1075 4 70 5000 672 4 16 63. STEAM UNIT HEATERS LESS THAN 15 PSI,STEAM 2 PSIG MOTOR SPREAD STEAM. CFM OUTLET,CAT ENT AIR 60 F 575 3 60 SOUND 2 PSIG,NO COND FIN NOM NOM NOM CLASS.
EDR MBH 60 F CITY H S,lb h TEMP HP RPM AMP, HS 420 1660 412 3 398 4 120 2 1140 2 70 6150 775 4 16 68. ALL UNITS c w,MOTOR MOUNT SPREAD,4 WAY LOUVER FIN DIFFUSER. A All units with 0 035 Copper Tubes 5 8 outside diameter mechanically. bounded to alluminum fins, B Higher steam pressure units available on request. UNIT HEATERS,STEAM CAPACITIES HEATING,VERTICAL PROJECTION. STEAM UNIT HEATERS LESS THAN 15 PSI,STEAM 2 PSIG MOTOR THROW STEAM.
ENT AIR 60 F 115V 1 60 CFM OUTLET 2 PSIG,VELO NO LOUVER. NO COND FIN NOM NOM NOM CLASS,EDR MBH 60 F CITY CONE CONE. lb h TEMP HP RPM AMP, VS 47 193 48 0 46 4 136 1 25 1000 1 50 565 715 1 12 24 15 16. VS 55 230 57 1 55 2 122 1 25 1550 1 50 830 1050 2 15 36 18 21. VS 57 238 59 1 57 1 121 1 12 1000 1 30 865 809 1 15 36 18 21. VS 67 283 70 4 68 0 109 1 12 1550 1 30 1275 1190 2 17 45 22 25. VS 89 274 93 0 89 9 116 1 6 820 2 80 1490 1068 2 19 45 26 29. VS 103 427 106 0 102 5 107 1 6 1100 2 80 2000 1433 2 23 65 30 44. VS 137 571 141 8 137 0 108 1 3 850 4 70 2640 1490 2 23 52 36 38. VS 157 653 161 9 156 4 101 1 3 1075 4 70 3550 2000 4 29 79 41 44. VS 171 715 177 8 171 9 120 3 4 820 8 90 2640 840 1 20 37 26 27. VS 197 816 202 3 196 0 111 3 4 1100 8 90 3550 1130 2 22 39 30 30. VS 247 1029 255 8 246 9 106 1 820 14 00 4960 1580 2 27 56 41 41. VS 279 1159 288 0 278 5 99 1 1075 14 00 6660 2120 4 35 71 50 56. VS 361 1501 372 9 360 1 113 1 820 14 00 6260 1273 2 37 75 54 51. VS 413 1719 425 5 412 5 105 1 1075 14 00 8430 1716 3 48 97 66 70. STEAM UNIT HEATERS LESS THAN 15 PSI,STEAM 2 PSIG MOTOR SPREAD STEAM. ENT AIR 60 F 575 3 60 CFM OUTLET 2 PSIG,VELO NO LOUVER.
NO COND FIN NOM NOM NOM CLASS,EDR MBH 60 F CITY CONE CONE. lb h TEMP HP RPM AMP, VS 595 2484 616 0 595 5 110 2 1100 2 7 11900 2420 4 64 118 80 95. WITH CONE DIFFUSER WITHOUT CONE DIFFUSER,LOUVER CONE DIFFUSER. A All units with 0 035 CopperTubes 5 8 outside diameter mechanically. bounded to alluminum fins, B Higher steam pressure units available on request. UNIT HEATERS, HEATING SELECTING A UNIT HEATER FOR USE WITH STEAM.
DESIGN CONDITIONS,Heating load 139 MBH,Entering air temperature EAT 70 F. Steam pressure 10 PSIG,Mounting height 30 feet, Standard vertical projection steam unit required Model VS. SELECTION PROCEDURE, 1 Calculate equivalent capacity at conditions of Table 4 4 Calculate final air temperature FAT. Equivalent capacity, From Table 4 select Cat No VS 137 unit heater 5 Determine air mounting height at actual conditions. 2 Calculate unit capacity at actual conditions At Table 4 conditions mounting height of VS 137 is. 23 feet without diffuser and 36 feet with louver cone. Actual capacity MBH Table 4 x Factor Table 5 diffuser. 137 x 1 04 142 4 MBH,At actual conditions 10 PSIG and 70 F EAT.
3 Calculate weight of condensate in pounds per hour. Height 23 x 0 98 Table 6 22 5 feet without diffuser. Pounds of condensate 36 x 0 98 Table 6 35 3 feet with louver cone. Louver cone diffuser shall be used,GENERAL SELECTION for application details page XX. and Table 7 for noise level,BTU CORRECTION FACTORS. LATENT MODELS H HS HORIZONTAL PROJECTION MODELS V VS HORIZONTAL PROJECTION. HEAT ENTERING AIR TEMPERATURE F ENTERING AIR TEMPERATURE F. BTUH lb 10 0 10 20 30 40 50 60 70 80 90 100 10 0 10 20 30 40 50 60 70 80 90 100. 0 970 1 54 1 45 1 37 1 27 1 19 1 11 1 03 0 96 0 88 0 81 0 74 0 67 1 48 1 41 1 33 1 25 1 18 1 11 1 03 0 96 0 89 0 82 0 75 0 69. 2 966 1 59 1 50 1 41 1 32 1 24 1 16 1 08 1 00 0 93 0 85 0 78 0 71 1 52 1 44 1 36 1 29 1 22 1 14 1 07 1 00 0 93 0 86 0 79 0 73. 5 961 1 64 1 55 1 46 1 37 1 29 1 21 1 13 1 05 0 97 0 90 0 83 0 76 1 57 1 49 1 41 1 33 1 26 1 19 1 11 1 05 0 98 0 91 0 84 0 77. 10 953 1 73 1 64 1 55 1 46 1 38 1 29 1 21 1 13 1 06 0 98 0 91 0 84 1 64 1 56 1 48 1 40 1 33 1 25 1 18 1 11 1 04 0 97 0 90 0 84. 15 945 1 80 1 71 1 61 1 53 1 44 1 34 1 28 1 19 1 12 1 04 0 97 0 90 1 69 1 61 1 53 1 46 1 38 1 31 1 24 1 17 1 10 1 03 0 96 0 90. 20 939 1 86 1 77 1 68 1 58 1 50 1 42 1 33 1 25 1 17 1 10 1 02 0 95 1 73 1 65 1 57 1 50 1 42 1 35 1 28 1 21 1 14 1 07 1 00 0 94. 50 911 2 13 2 04 1 94 1 85 1 76 1 67 1 58 1 50 1 42 1 34 1 26 1 19 1 93 1 85 1 77 1 70 1 63 1 55 1 48 1 42 1 35 1 28 1 21 1 27. 75 894 2 28 2 18 2 09 1 99 1 90 1 81 1 72 1 64 1 55 1 47 1 40 1 32 2 04 1 97 1 90 1 82 1 75 1 68 1 61 1 54 1 47 1 40 1 33 1 27. 100 880 2 41 2 31 2 20 2 11 2 02 1 93 1 84 1 75 1 66 1 58 1 50 1 42 2 15 2 07 1 99 1 92 1 85 1 77 1 70 1 63 1 56 1 49 1 43 1 36. Special high pressure steam unit on request over 15 psig. UNIT HEATERS,AIR DISTRIBUTION CORRECTION FACTORS HEATING. ENT WATER TEMP F 180 200 220 240 260 270 280 290 300 315 345 370 385. STEAM PRESS PSIG 2 5 10 15 20 30 50 75 100, 40 1 18 1 10 1 03 0 98 0 93 0 91 0 88 0 86 0 84 0 82 0 77 0 74 0 72. 50 1 23 1 14 1 07 1 01 0 96 0 95 0 92 0 89 0 87 0 84 0 80 0 76 0 73. 60 1 29 1 19 1 11 1 05 1 00 0 98 0 94 0 92 0 90 0 87 0 82 0 78 0 75. 70 1 35 1 24 1 15 1 08 1 04 1 02 0 98 0 95 0 93 0 89 0 84 0 80 0 77. 80 1 43 1 30 1 20 1 13 1 08 1 06 1 02 0 99 0 97 0 93 0 87 0 83 0 80. AIR DENSITY RATIO,NOISE LEVEL CLASSES,CLASSES TYPE OF AREA.
Movie theatres Coliseums Ballrooms Banquet rooms Supervisor s office Reception rooms. 1 Public libraries Museums Court rooms, Lobbies Laboratories Recreation halls Waiting rooms Restaurants Night clubs. 2 Department stores upper floors Bowling alleys Gymnasiums Lounges General open. offices Drafting rooms, Kitchens Washrooms and toilets Cafeterias Department stores main floors. 3 Supermarkets Swimming pools Garages Laundries Foreman s office Halls and corridors. 4 Factories Mills Heavy machinery maintenance Foundries. UNIT HEATERS,HEATING HOT WATER CAPACITIES,HORIZONTAL PROJECTION. TABLE 8 60 F ENTERING AIR TEMPERATURE,HIGH SPEED LOW SPEED. WATER ENTERING WATER TEMPERATURE MAXIMUM MAXIMUM WATER ENTERING WATER TEMPERATURE. TEMP 180 F 200 F PROJECTION PROJECTION CAT NO TEMP 180 F 200 F. DROP F MBH USGPM WPD FAT MBH USGPM WPD FAT HEIGHT SPREAD HEIGHT SPREAD DROP F MBH USGPM WPD FAT MBH USGPM WPD FAT. 15 23 5 3 20 2 70 90 28 4 3 90 3 60 98,H 18 15 19 2 2 60 1 90 98 23 2 3 2 2 6 106.
20 22 1 2 30 1 50 90 27 0 2 70 2 00 96 CFM 460 20 18 1 1 90 1 00 96 22 1 2 3 1 4 104. RPM 1550 30 19 3 1 30 0 60 86 24 3 1 70 0 9 93 30 15 9 1 10 0 40 92 19 9 1 4 0 6 100. 40 16 7 0 90 0 30 83 21 6 1 10 0 40 98 HP 1 20 40 13 8 0 70 0 20 88 17 8 0 9 0 3 96. H 36 20 33 0 3 30 4 10 94 39 9 4 10 5 60 102,H 26 20 26 7 2 70 2 80 101 32 3 3 3 3 9 110. 30 29 7 2 00 1 70 91 36 7 2 50 2 40 98 CFM 595 30 24 1 1 60 1 20 97 29 7 2 0 1 7 106. HP 1 20 40 26 5 1 40 0 90 88 33 5 1 70 1 30 95 40 21 5 1 10 0 60 94 27 2 1 4 0 9 102. the source of heat loss but precautions should be taken to avoid blasting people with the warm air mass Model H units should be located to achieve maximum air rotation in the same direction at the outside walls ECONOMY AND COMFORT Where individual comfort is not an important factor the prime

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