Rosemex Products 2009 HEATING UNIT HEATERS FOR STEAM OR HOT WATER

Transcription

1 01 Rosemex Products 09 HEATING UNIT HEATERS FOR STEAM OR HOT WATER

2 2 UNIT HEATERS FEATURES BROAD RANGE OF APPLICATION Hot water or steam ROSEMEX unit heaters provide economical space comfort for industrial, commercial and institutional applications. Horizontal models H and HS in 13 sizes; up to 492 MBH. Vertical models V and VS in 13 sizes; up to 685 MBH. Greater throw with low outlet temperature» HS and VS units (with high pressure steam). Maximum flexibility of air distribution with optional diffuser arrangements. Units with special coil available on request: copper fins on copper tubes, steel fins on either steel, Bundyweld steel (copper plated steel), copper or red brass tubes. CUTAWAY VIEWS FIGURE 1 APPEARANCE Compact and attractive. Modern design enhanced by aluminium semi-gloss finish. HIGH PERFORMANCE More CFM for lower outlet air temperature. Quieter operation with lower RPM motors. Greater air throw and circulation. Top opening on V models helps recover warm air at ceiling. Suitable for higher temperature drops. HS and VS units have wider fin spacing allowing for higher CFM and higher outlet velocities for even greater throw. Accurately rated in accordance with AMCA bulletins # and 22. Guaranteed to be free from defects in material or workmanship for a period of one year from date of purchase. MODEL H 1. Heavy gauge steel cabinet 2. Speed grip nut for solid easy hanging of unit 3. One-row coil with single connecting header on one side for half circuit 4. Heavy duty motor designed for longer life, permanently lubricated for a minimum of,000 hours 5. Rugged protective motor-mounts 6. Adjustable louvers 7. Louver fin diffusers 8. Sturdy balanced fan blade FIGURE 2 RUGGED LONG-LIFE CONSTRUCTION Casing: die formed, reinforced steel. Finish: sheet metal chemically degreased, phosphatized and etched. Semi-gloss grey paint finish. Coil: steel pipe headers, copper tubes, ribbed aluminum plate fins. Red brass tubes, heavy wall is standard on HS and VS models, optional on all other models, and recommended for steam over 5 PSIG. All coils tested with 0 PSIG air pressure under water. Motors: specially selected and tested; thermally protected; permanently lubricated for a minimum of,000 hours on H and HS models, and,000 hours on V and VS models. Motors totally enclosed on H and HS models. Motor mounts: rugged, corrosion resistant. All motors or supports resiliently mounted. Fans: aluminum blades; sturdy, balanced, efficient and quiet. EASY MAINTENANCE All parts fully accessible for maintenance, service or replacement. Motors readily accessible on model H units, and easily removable through fan opening on model V units. MODEL V 1. Heavy gauge steel cabinet 2. Speed grip nut for solid easy hanging of unit 3. One-row coil with full header at each end for a full circuit 4. Heavy duty motor designed for longer life, permanently lubricated for a minimum of,000 hours 5. Steel plate, rubber mounted motor support 6. Factory balanced quiet operating aluminum fan blades 7. Deep fan opening collar which encircles full depth of fan blade for protection against damage and also for better air distribution 8. Header brazed to copper tubes

3 UNIT HEATERS 3 GENERAL SELECTION HEAT LOSSES Should be calculated according to ASHRAE Guide or other reliable source. MODEL SELECTION The model selected should be suitable for the type of building or area to be served. Model H units are generally used with low ceilings (see Table 2 for mounting height and spread). Model V units are recommended with high ceilings. They are particularly efficient in plants, warehouses or similar applications where they recover warm air which stratifies near ceilings (see Table 3 for mounting height and spread). Model V unit heaters with louver cone diffusers can also be used with higher ceilings. NUMBER OF UNITS Select required number of units to handle the heat losses, and also for proper air motion, adequate coverage of the occupied space, and operation within permissible sound levels. For instance, although one large unit may be sufficient for a certain area, two smaller units may be specified at a lower RPM for quieter operation, and to provide better heat distribution and 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 LOCATION Unit Heaters should be spotted to aim the discharge towards 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 consideration is to design the most economical system which will satisfy overall heating requirements. Larger units requiring less piping are recommended. Where the physical comfort of the occupants is important, several smaller units will provide quieter operation, better heat distribution, and more even temperatures. PIPING For unit heater piping connections, see AMCA Bulletin No.. NOTE: Although the cone diffuser can be mounted on Model V as shown throughout this literature, it is recommended that the cone diffuser be mounted approximately four inches below the fan collar using fourbrackets (not shown) to provide optimum heat dispersion. MODEL H MODEL V

4 4 UNIT HEATERS STEAM CAPACITIES HORIZONTAL PROJECTION TABLE 1 STEAM UNIT HEATERS (LESS THAN PSI) No EDR STEAM - 2 PSIG ENT. AIR - 60 F COND. lb/h MBH MOTOR 1V/1/60 FIN. NOM. NOM. TEMP. HP RPM NOM. AMP. HS / HS / HS / HS / HS / HS / HS / HS / HS / HS / HS / HS / HS / HS / HS / F OUTLET VELOCITY SOUND CLASS H SPREAD STEAM 2 PSIG S TABLE 2 STEAM UNIT HEATERS (LESS THAN PSI) No EDR STEAM - 2 PSIG ENT. AIR - 60 F COND. lb/h MBH MOTOR 575/3/60 FIN. NOM. NOM. TEMP. HP RPM NOM. AMP. HS F OUTLET VELOCITY SOUND CLASS H SPREAD STEAM 2 PSIG S A. All units with Red Brass Tubes, 5/8 outside diameter mechanically bounded to alluminum fins. B. Higher steam pressure units available on request. MODEL H ALL UNITS c/w 4 WAY LOUVER FIN DIFFUSER MOTOR MOUNT SPREAD

5 UNIT HEATERS 5 VERTICAL PROJECTION STEAM CAPACITIES TABLE 3 STEAM UNIT HEATERS (LESS THEN PSI) No. EDR STEAM - 2 PSIG ENT. AIR - 60 F COND. lb/hr MBH FIN. NOM. TEMP. HP MOTOR 1V/1/60 NOM. RPM NOM. AMP. 60 F OUTLET VELOCITY SOUND CLASS NO CONE THROW STEAM 2 PSIG LOUVER CONE H S H S VS / VS / VS / VS / VS / VS / VS / VS / VS / VS / VS / VS / VS / VS / TABLE 4 STEAM UNIT HEATERS (LESS THEN PSI) No. EDR STEAM - 2 PSIG ENT. AIR - 60 F COND. lb/hr MBH FIN. NOM. TEMP. HP MOTOR 575/3/60 NOM. RPM NOM. AMP. 60 F OUTLET VELOCITY SOUND CLASS NO CONE THROW STEAM 2 PSIG LOUVER CONE H S H S VS A. All units with Red Brass Tubes, 5/8 outside diameter mechanically bounded to alluminum fins. B. Higher steam pressure units available on request. MODEL V OPTIONAL LOUVER CONE DIFFUSER WITH CONE DIFFUSER WITHOUT CONE DIFFUSER

6 6 UNIT HEATERS SELECTING A UNIT HEATER FOR USE WITH STEAM DESIGN CONDITIONS Heating load = 139 MBH Entering air temperature (EAT) = 70 F Steam pressure = PSIG Mounting height = feet Standard vertical projection steam unit required (Model VS). 4) Calculate final air temperature (FAT). Actual BTUH FAT = EAT + CFM x ,0 = 70 + = 119 F 26 x ) Determine air mounting height at actual conditions. SELECTION PROCEDURE 1) Calculate equivalent capacity at conditions of Table 4. Capacity required Equivalent capacity = Factor (Table 5) 139 = = 134 MBH 1.04 From Table 4, select Cat. No. VS-137 unit heater. At Table 4 conditions, mounting height of VS-137 is 23 feet without diffuser and 36 feet with louver cone diffuser. At actual conditions ( PSIG and 70 F EAT). Height = 23 x 0.98 (Table 6) = 22.5 feet (without diffuser) = 36 x 0.98 (Table 6) = 35.3 feet (with louver cone diffuser) Louver cone diffuser shall be used. 2) Calculate unit capacity at actual conditions. Actual capacity = MBH (Table 4) x Factor (Table 5) = 137 x 1.04 = MBH 3) Calculate weight of condensate in pounds per hour. Actual BTUH Pounds of condensate = Latent heat (Table 5) 142,0 = = 149 lb/hr 953 NOTE: See GENERAL SELECTION for application details (page 3), and Table 7 for noise level. TABLE 5 BTU CORRECTION FACTORS STEAM PSIG LATENT HEAT BTUH/lb MODELS H & HS HORIZONTAL PROJECTION ENTERING AIR TEMPERATURE F MODELS V & VS VERTICAL PROJECTION ENTERING AIR TEMPERATURE F * * * * * Special high pressure steam unit on request

7 UNIT HEATERS 7 AIR DISTRIBUTION CORRECTION FACTORS TABLE 6 ENT. WATER TEMP. F STEAM PRESS. PSIG 2 5 * * 50* 75* 0* ENT. AIR TEMP. F * Special high pressure steam unit on request. GRAPH 1 AIR DENSITY RATIO SEA LEVEL 00 FEET 00 FEET 00 FEET FACTOR (AIR DENSITY RATIO) FEET 5000 FEET 6000 FEET 7000 FEET 8000 FEET 9000 FEET 000 FEET 100 FEET 0 FEET 0 FEET 0 FEET 000 FEET AIR TEMPERATURE ( F) TABLE 7 NOISE LEVEL CLASSES CLASSES TYPE OF AREA Movie-theatres Coliseums Ballrooms Banquet rooms Supervisor s office Reception rooms Public libraries Museums Court rooms Lobbies Laboratories Recreation halls Waiting rooms Restaurants Night clubs Department stores (upper floors) Bowling alleys Gymnasiums Lounges General open offices Drafting rooms Kitchens Washrooms and toilets Cafeterias Department stores (main floors) Supermarkets Swimming pools Garages Laundries Foreman s office Halls and corridors Factories Mills Heavy machinery maintenance Foundries

8 8 HOT WATER CAPACITIES TABLE 8 HIGH SPEED UNIT HEATERS HORIZONTAL PROJECTION 60 F ENTERING AIR TEMPERATURE LOW SPEED NO. H-24 CFM 680 RPM 50 HP 1/ H-36 CFM 880 RPM 50 HP 1/ H- CFM 11 RPM 50 HP 1/12 H-58 CFM 1435 RPM 50 HP 1/12 H-60 CFM RPM 75 H-82 CFM 1800 RPM 75 H-98 CFM 20 RPM 10 H-114 CFM 2470 RPM 75 H-122 CFM 29 RPM 75 H-166 CFM 35 RPM 10 WATER TEMP. DROP F ENTERING WATER TEMPERATURE MAXIMUM 180 F 0 F PROJECTION MBH USGPM WPD FAT MBH USGPM WPD FAT HEIGHT SPREAD FAN SIZE Ø MAXIMUM PROJECTION HEIGHT SPREAD Ø 14 Ø 14 Ø Ø 16 Ø Ø Ø Ø Ø NO. H-18 CFM 460 RPM 00 HP 1/ H-26 CFM 595 RPM 00 HP 1/ H-32 CFM 7 RPM 00 HP 1/12 H-44 CFM 9 RPM 00 HP 1/12 H-50 CFM RPM 8 H-70 CFM 1475 RPM 8 H-80 CFM 1685 RPM 8 H-96 CFM RPM 8 H-2 CFM 60 RPM 8 H-136 CFM 2470 RPM 850 WATER TEMP. DROP F ENTERING WATER TEMPERATURE 180 F 0 F MBH USGPM WPD FAT MBH USGPM WPD FAT H-174 CFM 38 RPM 10 HP 1/3 H-234 CFM 4605 RPM 10 HP 1/ Ø Ø H-144 CFM 2690 RPM 8 HP 1/3 H-194 CFM 3235 RPM 8 HP 1/ H-0 CFM 5000 RPM 75 H-0 CFM 60 RPM 11 HP 1* Ø 26 Ø For MBH at EWT other than those indicated in the tables, use 0 F MBH and multiply by factor in table. MBH obtained will be at USGPM of 0 F MBH used. * 575/3/60.

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10 HOT WATER CAPACITIES TABLE 9 UNIT HEATERS VERTICAL PROJECTION 60 F ENTERING AIR TEMPERATURE HIGH SPEED LOW SPEED NO. V- CFM 750 RPM 50 HP 1/ V-48 CFM RPM 50 HP 1/12 V-66 CFM 00 RPM 17 V-84 CFM 1435 RPM 10 V-96 CFM 24 RPM 17 V-6 CFM 20 RPM 75 V-1 CFM 30 RPM 75 V-1 CFM 3660 RPM 10 V-180 CFM 30 RPM 10 V-0 CFM 40 RPM 10 V-2 CFM 6000 RPM 75 HP 3/4 V-370 CFM 7600 RPM 75 HP 3/4 V-5 CFM 110 RPM 10 HP 2 WATER TEMP. DROP F No cone diffuser (standard unit). * ENTERING WATER TEMPERATURE MAXIMUM* 180 F 0 F PROJECTION MBH USGPM WPD FAT MBH USGPM WPD FAT HEIGHT SPREAD FAN SIZE MAXIMUM* PROJECTION HEIGHT SPREAD Ø 14 Ø 14 Ø 16 Ø 16 Ø 18 Ø 18 Ø Ø Ø 24 Ø 24 Ø Ø Ø NO. V- CFM 5 RPM 00 HP 1/ V-38 CFM 780 RPM 00 HP 1/12 V-50 CFM 955 RPM 75 V-70 CFM 13 RPM 8 V-80 CFM 45 RPM 75 V-90 CFM 1790 RPM 850 V-8 CFM 2380 RPM 850 V-124 CFM 27 RPM 8 V-144 CFM 2380 RPM 8 V-170 CFM 3160 RPM 8 V-4 CFM 4470 RPM 8 HP 3/4 V-0 CFM 5660 RPM 8 HP 3/4 WATER TEMP. DROP F ENTERING WATER TEMPERATURE 180 F 0 F MBH USGPM WPD FAT MBH USGPM WPD FAT For MBH at EWT other than those indicated in the tables, use 0 F MBH and multiply by factor in table. MBH obtained will be at USGPM of 0 F MBH used.

11 UNIT HEATERS 11 HOT WATER CAPATITIES TABLE 9 (cont d) HIGH SPEED LOW SPEED VERTICAL PROJECTION 60 F ENTERING AIR TEMPERATURE NO. WATER TEMP. DROP F ENTERING WATER TEMPERATURE MAXIMUM* 2 F 2 F PROJECTION MBH USGPM WPD FAT MBH USGPM WPD FAT HEIGHT SPREAD FAN SIZE MAXIMUM* PROJECTION HEIGHT SPREAD NO. WATER TEMP. DROP F ENTERING WATER TEMPERATURE 2 F 2 F MBH USGPM WPD FAT MBH USGPM WPD FAT V- CFM 750 RPM 50 HP 1/ Ø V- CFM 5 RPM 00 HP 1/ V-48 CFM RPM 50 HP 1/12 V-66 CFM 00 RPM Ø 14 Ø V-38 CFM 780 RPM 00 HP 1/12 V-50 CFM 955 RPM 75 V-84 CFM 1435 RPM 10 V-96 CFM 24 RPM 17 V-6 CFM 20 RPM 75 V-1 CFM 30 RPM 75 V-1 CFM 3660 RPM 10 V-180 CFM 30 RPM 10 V-0 CFM 40 RPM 10 V-2 CFM 6000 RPM 75 HP 3/4 V-370 CFM 7600 RPM 75 HP 3/4 V-5 CFM 110 RPM 10 HP 2 No cone diffuser (standard unit). * Ø 16 Ø 18 Ø 18 Ø Ø Ø 24 Ø 24 Ø Ø Ø V-70 CFM 13 RPM 8 V-80 CFM 45 RPM 75 V-90 CFM 1790 RPM 850 V-8 CFM 2380 RPM 850 V-124 CFM 27 RPM 8 V-144 CFM 2380 RPM 8 V-170 CFM 3160 RPM 8 V-4 CFM 4470 RPM 8 HP 3/4 V-0 CFM 5660 RPM 8 HP 3/ For MBH at EWT other than those indicated in the tables, use 0 F MBH and multiply by factor in table. MBH obtained will be at USGPM of 0 F MBH used.

12 12 UNIT HEATERS SELECTING A UNIT HEATER FOR USE WITH HOT WATER DESIGN CONDITIONS 3) Calculate coil water flow (USGPM) Heating load = 138 MBH Entering air temperature (EAT) = 70 F Entering water temperature (EWT)* = 2 F Water temperature drop (WTD) = F Actual BTUH 143,6 Water flow = = = USGPM 500 x WTD 500 x 4) Calculate coil water pressure drop (WPD). Mounting height = 12 feet Spread required = feet Standard horizontal projection unit required (model H). USGPM (Actual) WPD = WPD (Table 8) x USGPM (Table 8) ( ) 2 ( ) = 1.31 x = 1.47 feet of water ) Calculate final air temperature (FAT). SELECTING PROCEDURE 1 ) Calculate equivalent capacity at conditions of Table 8. Capacity required Equivalent capacity = Factor (Table ) 138 = = 1 MBH 1.06 From Table 8, choose the unit heater with this output, at the condition 0 F EWT and F WTD. We select Cat. No. H-136 unit heater. Actual BTUH FAT = EAT + CFM x ,6 = 70 + = F 2470 x ) Determine mounting height and throw at actual conditions. At Table 2 conditions (2 F EWT and 70 F EAT) Mounting height = 14 x 1. (Table 6) = 16.1 feet Throw = 44 x 1. = 50.6 feet We can use this unit heater. 2) Calculate unit capacity at actual conditions. Actual capacity = MBH (Table 8) x Factor (Table ) = x 1.06 = MBH NOTE: See «GENERAL SELECTION» for application details (page 3), and Table 7 for noise level. TABLE HOT WATER CORRECTION FACTORS * ENTERING AIR TEMP. F ENTERING WATER TEMPERATURE F For MBH at EWT other than those indicated in the tables, use 0 F MBH and multiply by factor in table. MBH obtained will be at USGPM of 0 F MBH used.

13 UNIT HEATERS 13 UNIT HEATER MOTOR SPEEDS & SWITCHES TABLE 11 HORIZONTAL UNIT TYPICAL WIRING DIAGRAM VERTICAL UNIT MOTOR (1/1/60) HP A NOMINAL RPM V-, V- VS-47, VS-55 1/ H-18, H-24 HS-, HS-31 H-26, H-36 HS-39, HS-47 1/ H-32, H- HS-43, HS-51 V-38, V-48 VS-57, VS-67 H-44, H-58 1/ H-50, H-60, H-70 HS-73, HS-95 V-70, V-84* VS-89, VS-3* H-82 1/ H-80, H-98* HS-97, HS-113* 1/ H-96, H-114 HS-117, HS-137* V-50*, V-80* VS-137, VS-7* H-2, H-122* V-90, V-6* H-136, H-166* V-8, V-1* 1/ V-66*, V-96* 1/ H-144, H-174* HS-175, HS-5* H-194, H-234* 1/ H-0 HS V-124, V-1* VS-171, VS-197* V-144, V-180* V-170, V-0* 3/4. 10 V-4, V-2 VS-247, VS-279 V-0, V-370 VS-361, VS V-5 VS-595 2** H-0 HS-4 2*** 11 * Available with Explosion Proof motor. *** 460/0-2/3/60 ** 575/3/ /3/60 NOTE: Applies to Standard Motors only, when Special Motors are needed (TEFC, Explosion Proof...) Please contact our Engineering Department. FIGURE 3 WHITE BLACK HIGH MOTOR TABLE 12 SUPPLY 1V WHITE -- + BLACK STARTER 2 SPEEDS High: Black Low: Red RED LOW Note: Refer to unit for current wiring diagram. MOTOR CHARACTERISTICS UNIT MODEL H HP 1/ 1/ 1/12 1/6 1/4 1/3 1/ /4 1 2 VOLTS AMP RPM VOLTS AMP MODEL V RPM All motors operate on 60 cycles. 1Ø, except 2 HP motors 575/3/60. MOTOR 75

14 14 UNIT HEATERS DIMENSIONS HORIZONTAL PROJECTION MODEL H FIGURE 4 1/2" TYP 1 3/4 MOUNTING HOLES 3/8 16 NC 2 5/8 F PIPE SIZE E B 3 1/2 C D A 3 1/4 TABLE 13 CATALOGUE NO. FAN LOW OUT. DIAM. STANDARD TEMP. A B C D E F WEIGHT H-18, H-24 HS-, HS / /4 39 H-26, H-36 HS-39, HS / /4 9 H-32, H- HS-43, HS / /4 53 H-44, H H-50, H-60 HS / / /4 64 H-70, H-82 HS / /4 9 H-80, H-98 HS-97, HS H-96, H / /4 12 H-2, H-122 HS-117, HS H-136, H /4 12 H-144, H-174 HS-175, HS / /8 4 1/8 1 1/2 1 1/2 1 1/ H-194, H-234 H-0 HS / /2 4 1/8 1 1/2 184 H-0 HS / /8 1 1/2 2 VERTICAL PROJECTION MODEL V FIGURE 5 F M L CEILING Pipe size G L K min FIGURE 6 A F H C E M J A MOUNTING HOLES N D P TABLE 14 CATALOGUE NO. FAN LOW OUT. A C D E F G H J K L M N P WEIGHT STANDARD TEMP. DIAM. V-, VS-47, /8 2 1/2 8 1/2 V-38, 48 VS-57, / /16 V-50, /2 13 1/ /16 1 3/4 3/8-36 V-70, 84 VS-89, NC /2 16 7/ V-80, /2 64 V-90, / /2 V-8, 1 VS-137, / /4 89 V-124, 1 1/ / /16 98 V-144, 180 VS-171, 197 1/2 2 1/4 1/2-98 V-170, /4 7 1/2 24 5/ /2 13 NC 6 3/4 6 V-4, 2 VS-247, /2 1 V-0, 370 VS-361, /8 3/ / /16 8 V-5 VS /2 19 1/2 0

15 UNIT HEATERS GUIDE SPECIFICATIONS The mechanical contractor shall supply and install Rosemex unit heaters in models and sizes as shown on plans and described in specifications. CASING Shall be of high quality, die formed, cold rolled steel, degreased, phosphatized, etched and finished in aluminium semigloss finish. MOTORS With permenant split capacitor and shall be thermally protected and permanently lubricated for a minimum of,000 hours. They shall be totally enclosed on H and HS models. Motors or supports shall be resiliently mounted. Motors on H and HS units shall be mounted on formed, welded and plated heavy gauge wire support. On V and VS units, motors and blades shall be removable through fan opening. FANS Fan blades shall be aluminum and balanced for quietness. DIFFUSERS Louver fin (model H) and louver cone (model V) diffusers shall have individually adjustable blades for maximum air distribution flexibility. COIL Shall consist of aluminum plate fins on mechanically expanded copper tubes, welded to steel headers and tested with 0 PSIG air pressure under water. Low outlet temperature units shall have 0,035 wall red brass tubes. SPECIFICATIONS Shall specify: Cat. No. Volts Phase Optional Louver fin or louver cone diffusers Protective grille Motor speed. Controls and optional motors are supplied at additional cost (contact factory). For information about your nearest branch or agent, contact Head Office. In the interest of product improvement, we reserve the right to make product and specification changes without notice. Printed in Canada

16 MECAR METAL Products 60, Marie-Victorin blvd Saint-Bruno (Quebec) J3V 6B9 Tel.: (450) Fax: (450)