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INSTALLATION, OPERATING AND
SERVICE INSTRUCTIONS FOR
™ ™
BH AND BV UNIT HEATERS
FOR STEAM OR HOT WATER
For service or repairs to heater, call your heating contractor. When seeking
information on heater, provide Model Number and Serial Number as shown on Rating
Label located on top of the heater.
Mr odel NumberSe erial Numbe Installation Dat
Heating Contractor Phone Number
Address
8144A001R4-2/07
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TABLE OF CONTENTS I. PRECAUTIONS - IMPORTANT INFORMATION .................................................3 II. GENERAL INFORMATION A. Installation Limitations ..............................................................................................4 B. Inspection on Arrival .................................................................................................4 III. INSTALLATION A. Special Precautions ............................................................
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I. IMPORTANT INFORMATION - READ CAREFULLY BEFORE INSTALLATION The following terms are used throughout this manual to bring attention to the presence of hazards of various risk levels, or to important information concerning product life. NOTICE WARNING Indicates special instructions on Indicates a potentially hazardous installation, operation, or maintenance situation which, if not avoided, could which are important but not related to result in death, serious injury or personal injury hazards.
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II. GENERAL INFORMATION A. INSTALLATION LIMITATIONS Installation and service instructions in this manual are WARNING applicable to the steam/hot water unit heaters which should be installed in their proper applications for their DO NOT REMOVE OUTLET FAN GUARD most effective function as overhead heating units. The FROM MODEL BV UNITS. copper coils are warranted for operation at steam or hot water pressures up to 150 psig, and/or temperatures up to 375°F. Canadian Standards Association (CS
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Vertical Delivery Units, Model BV Series accessories. Locate horizontal delivery unit heaters so air streams of individual units wipe the exposed walls Models BV-42 through BV-161 have 4 tapped holes of the building with either parallel or angular fl ow (1/2”-13) on the top surface for unit suspension. without blowing directly against the walls. Heaters Suspension can be made with threaded rods, pipes, should be spaced so the air stream from one supports or ceiling hanger brackets.
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Figure 3: 115V / 60Hz / 1PH Wiring Schematic 6
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Table 1: Recommended Maximum Mounting Height Horizontal Type Vertical Type One-Way Two-Way 3-Cone 4-Cone No Deflector Cone-Jet Truncone Louvers Louvers Anemostat Anemostat Height-Ft. Model Model Number Number Height-Ft. Height-Ft. Height-Ft. Height-Ft. Height-Ft. Height-Ft. Height-Ft. H S H S H S H S H S H S H S H S B9 H-18 17B1 V-42 17151118 13 9 1118 282 2 28 28 B9 H-24 18B3 V-59 10281319 26 5 14101829 28 8 35 B0 H-33 10 2B4 V-78 122914111627151110311038 30 B2 H-47 15 2B6 V-95 142126111627151
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IV. OPERATION A. PRIOR TO OPERATION 3. Open return gate valve, and then open supply gate valve to unit. 1. Check all electrical connections to assure they are 4. Raise thermostat setting to desired position. secure. 5. Adjust louvers (if provided) for desired heat 2. Check rigidity of unit mounting. Tighten all distribution. fasteners, if necessary. 6. To insure proper sequence of operation, cycle unit 3. Inspect piping, strainers, traps, fi ttings, etc. on and off a few times by rai
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V. MAINTENANCE A. INSPECT REGULARLY NOTICE Under average conditions, it is recommended that unit heaters be inspected before every heating season For service contact your local qualified — more often in locations where air is contaminated installation and service contractor or with corrosive fumes, dust, soot or oil spray. Check appropriate utility company. for dirty, clogged coils, excessive vibration and loose D. COILS connections. Inspect piping, strainers, traps, fi ttings, etc. 1. Cleani
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VI. APPLICATION GUIDELINES considering the nuisance of a loud unit. All units A. GENERAL GUIDELINES were designed to minimize sound created by airfl ow 1. The fi rst step in the design of a job is typically to and motor operation by careful component selection determine the heat loss. Refer to ASHRAE and and inlet geometry. Sound Classifi cation Table 2 others for publications on the basic methodology shows typical rooms and their corresponding sound used in calculating the building or
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B. STEAM PERFORMANCE DATA Table 3: Steam Performance Data -- High Motor Speed Performance Data at Standard Conditions of 2 lb. Steam and 60°F Entering Air AIR DATA Max. Heat Outlet Final Air Model Model Sq. Ft. Sound Mounting Spread at Velocity Temp. Condensate Type Number BTU/Hr. EDR Class** Height (ft)* Max. Height* Cfm (Fpm) (°F) lb/hr B0 H-1815 8,00 7II9 10 7 40 052 1 18 0 1 B0 H-2420 4,00 1I 0 I9 10 8 40 559 8 15 0 2 B0 H-3338 3,00 1I 3 I0102060 359 1 15 0 3 B0 H-4746 7,00 1I 9 I2 I 152070
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C. SELECTION PROCEDURE - STEAM APPLICATION Example 1: GIVEN DESIGN CONDITIONS: Unit Heater Model: BH-63 Steam Pressure: 10 lb Entering Air Temperature: 70°F APPLICATION PROCEDURE: 1. Capacity: Btu = Btu x Heating Capacity Factor The standard capacity of an BH-63 is A S = 63,000 x 1.06 = 66,780 Btu/hr 63,000 Btu/hr from Table 3. Steam heating capacity conversion factor for given circumstance is1.06 from Table 5. 2. Condensate: Condensate Rate = Btu / Latent Heat of Steam The latent hea
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D. STEAM CALCULATION FORMULAS 1. Refer to Table 5: 4. Refer to Table 8: a. To determine the heating capacity (Btu/hr) of a To determine the rate of condensate production at unit heater at a steam pressure and/or entering steam pressures other than 2 lb. air temperature other than standard conditions of Condensate Rate = Btu / Latent Heat of Steam A 2 lb. Steam and 60°F entering air temperature. 5. Terminology: b. To fi nd actual unit heater capacity when a. ATR = Air temperature ris
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E. STEAM CORRECTION FACTORS Table 5: Steam Heating Capacity Conversion Factors Unit Entering STEAM PRESSURE (PSIG) Heater Air Temp. Types (°F) 0 2 5 10 15 20 30 40 50 60 70 75 80 90 100 125 150 -4 10 19 .514 .513 .610 .716 .817 .816 .923 .020 .126 .228 .221 .226 .321 .321 .420 .5 2.6 0510 .415 .514 .511 .617 .717 .716 .814 .929 .026 .028 .121 .126 .221 .221 .320 .4 2.5 17 0 11 .316 .415 .411 .518 .618 .616 .714 .810 .926 .029 .021 .026 .120 .121 .220 .3 2.4 27 0 12 .217 .316 .313 .418 .518 .51
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Table 6: Air Temperature Rise Conversion Factors Unit Entering STEAM PRESSURE (PSIG) Heater Air Temp. Types (°F) 0 2 5 10 15 20 30 40 50 60 70 75 80 90 100 125 150 -3 10 18 .313 .310 .416 .511 .510 .618 .714 .711 .815 .917 .910 .924 .028 .027 .025 .1 2.2 0813 .218 .315 .311 .416 .515 .513 .619 .716 .711 .813 .915 .910 .924 .023 .021 .1 2.2 14 0 17 .213 .210 .316 .412 .410 .518 .614 .611 .716 .819 .811 .815 .919 .919 .927 .0 2.1 27 0 12 .117 .215 .212 .316 .415 .412 .519 .615 .611 .714 .816 .810
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Table 8: Properties of Steam Gauge Gauge Gauge Gauge Temp Latent Heat Temp Latent Heat Temp Latent Heat Temp Latent Heat Pressure Pressure Pressure Pressure (°F) (Btu/lb.) (°F) (Btu/lb.) (°F) (Btu/lb.) (°F) (Btu/lb.) (PSIG) (PSIG) (PSIG) (PSIG) 0023 12. 970. 27 79.4 924. 70 033 16. 897. 16 0934 43. 875. 34 2522 18. 966. 39 629 81. 922. 77 230 17. 896. 14 1239 45. 873. 4424 24. 962. 33 821 84. 921. 73 438 19. 894. 12 1535 47. 872. 5226 27. 960. 47 023 86. 919. 79 635 20. 893. 19 1830 48. 871. 68
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F. HOT WATER PERFORMANCE DATA (at Standard Conditiions of 200°F Entering Water, 60°F Entering Air and 20°F Water Temperature Drop) Table 9: Hot Water Performance Data -- High Motor Speed WATER DATA AIR DATA Pressure Drop Max. Heat Outlet Final Air Model Model (ft. of Min/Max Sound Mounting Spread at Velocity Temp. Type Number BTU/Hr. GPM water) GPM Class** Height (ft.)* Max. Height* Cfm (Fpm) (°F) B0 H-1813 3,0019 .00 .40I .3/5. I9 10 8 40 050 0 9 B0 H-2417 7,3013 .00 .80I .3/5. I0102040 556
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G. SELECTION PROCEDURE - HOT WATER APPLICATION Example 1: GIVEN DESIGN CONDITIONS: Unit Heater Model: BV-59, Entering Water Temperature: 250°F, Entering Air Temperature: 70°F APPLICATION PROCEDURE: 1. Capacity: Btu = Btu x Heating Capacity Factor The standard capacity of an BV-59 is A S =44,300 x 1.272 = 56,350 Btu/hr 44,300 Btu/hr from Table 9. Steam heating capacity conversion factor for given circumstance is1.272 from Table 11. Same as standard The standard capacity on BV-59 is based
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b. To fi nd actual unit heater capacity when operated H. HOT WATER CALCULATION FORMULAS with glycol solution: 1. Refer to Table 11: Btu = Btu (or Btu ) x Glycol Correction AG S A a. To determine the heating capacity (Btu/hr) of a Factor unit heater at a water temperature and/or entering c. To select a heater capacity based on standard air temperature other than standard conditions of conditions to meet a heating capacity with glycol 200°F entering water temperature, 60°F entering solut
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I. HOT WATER CORRECTION FACTORS Table 11: Hot Water Heating Capacity Conversion Factors ENTERING AIR TEMPERATURE (°F) Entering Air Temp. (°F) 0 10 20 30 40 50 60 70 80 90 100 100 03 .76909 .6808 .5909 .5101 .4306 .3602 .2800 .2109 .1400 .06 0.00 110 09 .84604 .7502 .6702 .5904 .5107 .4303 .3500 .2808 .2108 .13 0.06 120 05 .92309 .8306 .7405 .6606 .5809 .5003 .4209 .3507 .2707 .20 0.13 11 .00004 .9100 .8208 .7408 .6500 .5704 .5009 .4206 .3405 .27 0.20 130 140 17 .07709 .9804 .8901 .8101 .7301 .6
