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Table of Contents
Summary of Contents for Burnham BH
- Page 1 ™ 8144A001R4-2/07 ™...
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Page 2: Table Of Contents
B. Control Sequences ...21 C. Field Installed Options for Horizontal Models Only ...21 D. Field Installed Options for Vertical Models Only ...22 VIII. DIMENSIONAL DATA A. BH Dimensional Data ...25 B. BV Dimensional Data ...26 IX. MOTOR DATA ...27 WARRANTY ...Back Cover... -
Page 3: Precautions - Important Information
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. i l i f i l . -
Page 4: General Information
(including specifi cations where applicable). UNIT SUSPENSION Horizontal Delivery Units, Model BH Series All horizontal delivery units have two tapped holes (3/8”-16) in the top for unit suspension. Piping support hangers or clamps are recommended and should be placed as close to the unit heater as possible. -
Page 5: Unit Heater Mounting Height
Units with explosion-proof motors have an explosion- proof junction box attached to the motor. Any damage to or failure of Burnham Hydronics heater units caused by incorrect wiring of the units is not covered by Burnham Hydronics standard warranty. - Page 6 Figure 3: 115V / 60Hz / 1PH Wiring Schematic...
- Page 7 Table 1: Recommended Maximum Mounting Height ° 0 F ° Horizontal Unit Heater Connected to Overhead Hot Water Mains Vertical Unit Heater Connected to Overhead Hot Water Mains Figure 4: Hot Water System Piping Unit Heater Connection for High Pressure Steam Unit Heater Connection for Low Pressure Steam - Open Grav- ity or Vacuum Return System Figure 5: Steam System Piping...
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Page 8: Operation
6. To insure proper sequence of operation, cycle unit on and off a few times by raising and lowering thermostat setting. 7. Check for proper rotation of fan. All fans must rotate in a counterclockwise direction when viewed from the back (BH) of the unit heater. -
Page 9: Maintenance
Use high-pressure air hose to loosen dirt by blowing from side where air leaves coil (side adjacent to louvers on blow-through units (BH); side adjacent to fan on draw-through units (BV)). For thorough cleaning of coil, remove motor and fan and spray a mild alkaline cleaning solution over the coil. -
Page 10: Application Guidelines
2. The second step is to decide the necessary engineering data for design conditions such as CFM, fi nal air temperature, quantity and location of units, based on the specifi c Burnham Hydronics Unit Heater model selected. 3. Burnham Hydronics steam/hot water unit heaters’... -
Page 11: Steam Performance Data
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 Table 4: Steam Performance Data -- Reduced Motor Speed Performance Data at Standard Conditions of 2 lb. Steam and 60°F Entering Air °... -
Page 12: Selection Procedure - Steam Application
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: Example 2: GIVEN DESIGN CONDITIONS: Vertical Air Delivery requested Heating Load: 100,000 Btu/hr Entering Air Temperature: 50°F... -
Page 13: Steam Calculation Formulas
STEAM CALCULATION FORMULAS 1. Refer to Table 5: a. To determine the heating capacity (Btu/hr) of a unit heater at a steam pressure and/or entering air temperature other than standard conditions of 2 lb. Steam and 60°F entering air temperature. b. -
Page 14: Steam Correction Factors
STEAM CORRECTION FACTORS Table 5: Steam Heating Capacity Conversion Factors F °... - Page 15 Table 6: Air Temperature Rise Conversion Factors F ° Table 7: Steam Unit Heater Mounting Height Correction Factors...
- Page 16 Table 8: Properties of Steam F ° F ° F ° F °...
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Page 17: Hot Water Performance Data
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 Table 10: Hot Water Performance Data -- Reduced Motor Speed I I I I I I I I I I I I... -
Page 18: Selection Procedure - Hot Water Application
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: Example 2: GIVEN DESIGN CONDITIONS: Horizontal Air Delivery requested, Heating Load: 120,000 Btu/hr, Entering Air Temp.: 50°F, Entering Water Temp.: 180°F APPLICATION PROCEDURE: F °... -
Page 19: Hot Water Calculation Formulas
= Btu / Btu Correction Factor d. Other useful formulas: = EAT + [(460 + EAT )] For BH units only = EAT + [(460 + EAT )-1)] For BV Units only 3. Refer to Table 13: a. To determine how glycol solutions affect heater capacity. -
Page 20: Hot Water Correction Factors
HOT WATER CORRECTION FACTORS Table 11: Hot Water Heating Capacity Conversion Factors F ° Table 12: Correction Factors for Varying Water Temperature Drop* F ° Table 13: Ethylene Glycol Correction Factors** F ° Table 14: Hot Water Unit Heater Mounting Height Correction Factors*** F °... -
Page 21: Options, Accessories And Control Sequences
The following control sequence descriptions are commonplace for steam/hot water horizontal and vertical air delivery unit heaters. 1. Intermittent Fan Operation - Intermittent Hot/Cold Coil a. When a thermostat calls for heat, the motor is energized. At the same time, a valve is opened allowing the heating fl... -
Page 22: Field Installed Options For Vertical Models Only
FIELD INSTALLED OPTIONS FOR VERTICAL MODELS ONLY . r i . r i... - Page 23 Table 15: Vertical Air Outlet Accessory Dimensions*...
- Page 24 Table 16: Vertical Air Outlet Accessory Maximum Height and Spread Cone-Jet Truncone Anemo- F ° ° 0 Lou- No Defl ector F °...
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Page 25: Dimensional Data
VIII. DIMENSIONAL DATA BH DIMENSIONAL DATA Table 17: Model BH Dimensions... -
Page 26: Bv Dimensional Data
BV DIMENSIONAL DATA Table 18: Model BV Dimensions*... -
Page 27: Motor Data
IX. MOTOR DATA... -
Page 28: Warranty
Limited Warranty Limited Warranty Limited Warranty Limited Warranty BH and BV Series Unit Heaters Limited Warranty – Except as provided below with respect to products or parts not manufactured by U.S. Boiler™ Company, Inc. U.S. Boiler Company, Inc. warrants to the original owner at the original installation site that products manufactured by U.S.