Summary of Contents for AAON BL Series
- Page 1 BL SERIES BOILER IN PACKAGED MECHANICAL ROOM INSTALLATION, SERVICE & OWNER’S INFORMATION MANUAL...
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Page 2: Table Of Contents
TABLE OF CONTENTS SECTION Page GENERAL DESCRIPTION…………………………………………………………………………………………………. Unpacking…………………………………………………………………………………………………………... OWNER’S INFORMATION………………………………………………………………………........Wiring Diagrams……………………………………………………………………..........General Maintenance ……………………………………………………………………………………..………… Boilers ……………………………………………………………………………………………………………..Primary/Secondary Pumping……………………………………………………………………………………….. Make-up Water……………………………………………………………………………………………………… Expansion tank.……………………………………………………………………………………………………... Pressure Relief Valve…………………………………………………………………………….…………………. Automatic Air Vent…………………………………………………………………………….…………………..Dual Pumps…………………………………………………………………………………………………………. Pressure Gauges and Thermometers………………..………………………………………………………………. Pipe Insulation……………………………………………………………………………………………………… INSTALLATION…………………………………………………………………………….……………………………..Lifting and Handling……………………………………….………………………………………………………. Boiler Placement ……………………………………………………………………………………………………... - Page 3 It is the intent of AAON, Inc. to provide accurate and current specification information. However, in the interest of product improvement, AAON, Inc. reserves the right to change pricing, specifications, and/or design of its products without notice, obligation or liability ©...
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Page 4: General Description
Installation and service must be performed by a GENERAL DESCRIPTION qualified installer, service agency or if gas fired units, the gas supplier. Refer to installation AAON 'BL Series' boilers are complete self- instructions provided with the unit and this contained liquid heating units. They are factory manual. -
Page 5: Primary/Secondary Pumping
It consists of a constant flow pump for the boiler, and a variable flow pump for the building. The AAON controls package senses differential pressure across the pump with pressure transducers installed at the suction and discharge, and varies the speed of the pump using a VFD in order to •... -
Page 6: Expansion Tank
See appendix for • The AAON controls package will activate the additional information. pump when the unit is given a run command. If the controls do not recognize flow in 60 seconds, the second pump will be activated and an alarm signal will be generated. -
Page 7: Pressure Gauges And Thermometers
OWNER'S INFORMATION cont. Boiler Placement: • The AAON BL Series is designed for outdoor applications and mounting at ground level or on Pressure Gauges and Thermometers: a rooftop. It must be placed on a level and solid Pressure gauges and thermometers are available foundation that has been prepared to support its as a factory installed option. -
Page 8: Boiler Exhaust Connection
INSTALLATION cont. Rated Input* Rated Capacity (CFH) Boiler Size Natural LP/Propane 500 MBH 750 MBH 1000 MBH 1000 1500 MBH 1500 *Note: Indicated Rating is for sea level conditions. For additional information regarding the gas piping connection, see the boiler “Installation, Operating, and Service Instructions”... - Page 9 INSTALLATION cont. Securely fasten the vent pipe joints according to the following procedure: 1. Insert the male end into the female section. Push the units together and turn them until the bead of the male end is seated against the flared end of the female section.
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Page 10: Boiler Intake Connection
INSTALLATION cont. Boiler Intake Connection: Remove the intake shipping cover. The round collar on the back of the intake vent passes through the cabinet wall and slides over the crimped end of the air intake pipe inside the unit. This joint should be secured with aluminum foil Note: Startup technician must check motor tape. -
Page 11: Servicing & Maintenance
Control Manual provided Phone: 918-583-2266 • Fax: 918-382-6364 with the BL. ALWAYS USE AAON SPECIFIED PARTS To order parts from the AAON Parts store online go to www.aaonparts.com. SERVICING AND MAINTENANCE General: • Qualified technicians must perform routine service checks and maintenance. -
Page 12: Appendix: Piping Component Information
BL Series APPENDIX Piping Component Information CONTENTS Water Pressure Reducing Valves…………………………………………………………………….……………....Water Pressure Relief valves…………………………………………………………………………..…………....Automatic Air Vent Valves…………………………………………………………………….……….…………………..Pumps: Introduction…………………………………………………………………………………..…….………………… Pumps: Operation ……………….…………………………..……………………………………..…………………………. Pumps: Dual Pump Specific Information…………………….……………….……………………………………………… Horizontal and Vertical Expansion Tanks………………………………………………………………….………………..Suction Guides …………………………………………………………………………..…………………………………..Glycol Auto Fill Unit ………………………………………………………………………………………………………... -
Page 13: Water Pressure Reducing Valves
WATER PRESSURE REDUCING VALVE Water Pressure Reducing Valves are designed to reduce incoming water pressure to protect plumbing system components and reduce water consumption. Capacity: Overview: • Standard construction includes Z3 sealed spring cage and corrosion resistant adjusting cage screws for outdoor/waterworks pit installations •... -
Page 14: Water Pressure Relief Valves
PRESSURE REDUCING VALVE cont. Dimensions-Weights: WATER PRESSURE RELIEF VALVE Overview: • ASME Rated, Design Certified and Listed by C.S.A • Used for protection against excessive pressure on domestic storage tanks or tankless water heaters, the pressure relief valve has no temperature relieving element. -
Page 15: Automatic Air Vent Valves
AUTOMATIC AIR VENT VALVES Performance: • Automatic Air Vent Valves provide automatic air venting for hot or cold water distribution systems. These vents purge air that may be in the water system. • The vent valve utilizes a float to actuate the valve plug which is located at the top of the valve. - Page 16 While the air vent valve is in operation, back off AIR VENT VALVES cont. the small vent cap two turns. This is the proper operating setting which will allow air to be vented from the system. It is advisable to leave the cap on to prevent impurities from entering the valve.
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Page 17: Pumps: Introduction
drain or air blow out all water to prevent rust PUMPS: INSTALLATION AND buildup or the possibility of freezing. Be sure to OPERATING INSTRUCTIONS reinstall the plugs when the unit is made operational. Rustproofing or packing the casing Introduction: with moisture absorbing material and covering This document contains specific information the flanges is acceptable. -
Page 18: Pumps: Operation
• “Bump” or energize the motor momentarily and PUMPS cont. check that the rotation corresponds with the directional arrow on the pump casing. Pump Piping – General: • To reverse rotation of a three phase motor, interchange any two power leads. •... - Page 19 Generally if there are grease fittings evident the PUMPS cont. motor needs periodic lubrication, and if there are no grease fittings evident, no periodic lubrication General Care: is required. • Vertical In-Line pumps are built to operate • Check the lubrication instructions supplied with without periodic maintenance, other than motor the motor for the particular frame size indicated lubrication on larger units.
- Page 20 6. Overload protection OK? PUMPS cont. 7. Is the system clean? 8. Is the area around the pump clean? Note: Particular care must be taken to check the Warranty: following before the pump is put into operation: Does not cover any damages to the equipment 1.
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Page 21: Pumps: Dual Pump Specific Information
DUAL PUMP SPECIFIC VALVE OPERATION - Refer to Valve Illustration on Page 45 (3”, 4” & 6” Valve) or INFORMATION Page 46 (8” Valve) DUAL PUMP FLAPPER VALVE Discharge Valve: OPERATING INSTRUCTIONS This valve performs the dual function of This unit is fitted with internal valves to allow automatically sealing the discharge of the isolation of one pump for service and to inactive pump when one pump is running and... - Page 22 using set screw (11). This releases the suction DUAL PUMPS cont. locking arm (4). 5. Tighten set screw (11) to lock the locking Note: The locking handle (3) should only be handle (3) in position rotated towards the pump stopped for service. The suction valve is designed to prevent the THIS HANDLE...
- Page 23 4. Loosen set screw (11) and raise locking arm DUAL PUMPS cont. (3) to the vertical position, locking the center pin in the locking arm recess, secure with set screw. 3. Rotate valve to center position so that the center pin of the locking arm (4) is located in the recess on the locking handle (3).
- Page 24 DUAL PUMPS cont.
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Page 25: Horizontal And Vertical Expansion Tanks
evident, replace the Schrader-type tire valve HORIZONTAL AND VERTICAL core. EXPANSION TANKS • Do not depend on the valve cap to seal the leak. ASME PRE-PRESSURIZED DIAPHRAGM • After making sure air charge is correct, replace EXPANSION TANKS pipe plug over the charging valve for protection. FOR HEATING &... -
Page 26: Suction Guides
SUCTION GUIDES Inspection: Suction Guides are thoroughly tested and Introduction: inspected before shipment to assure they meet Suction Guides are designed for bolting directly with your order requirements. All units must be onto the suction flange of horizontal or vertical carefully examined upon arrival for possible shaft centrifugal pumps. -
Page 27: Glycol Auto Fill Unit
• Glycol is sometimes subject to bacterial attack The glycol auto fill unit (GLA) is designed to and can become slimy as a result. AAON maintain the HVAC system pressure by adding recommend the addition of a suitable biocide. -
Page 28: Flo-Trex Combination Valve
GLYCOL AUTO FILL UNIT cont. Topping up with glycol: The mixing tank is calibrated in liters and US gallons. The normal top up level is 53 US gallons The Ultra versions of the GLA have the (200 liters). capability of controlling duty and standby pumps 1. - Page 29 4. Position the adjoining flange or the pipe to the FLO-TREX COMBINATION VALVE Armgrip flange adapter and install the remaining cont bolts. The two locking bolts should be tightened first in order to position the flange correctly. Note: Care should be taken to ensure that the gasket is not pinched or bent between flanges.
- Page 30 the percentage of valve opening based on the Flow Measurement with the valve in the Wide number of rings at the fully open position. Open position: Where approximate indication of flow is Valve Size 2-1/2 acceptable the Flo-Trex valve can be used. Number of Rings Step 1.
- Page 31 metal backseating does not provide a drip-tight Operation: • To assure tight shut-off, the valve must be seal. closed using a wrench with 25 to 30 ft-lbs of Step 4. Clean exposed portion of valve stem torque. being careful not to leave scratches. •...
- Page 32 FLO-TREX COMBINATION VALVE cont Flo-Trex Cross Section 1. Body Main 2. Eye Bolt 3. Shaft 4. Spring 5. Spacer 6. Disc 7. Seat 8. O ring body 9. Body Suction 10. Capscrew 12. O ring 13 Bonnet 14 Sleeve...
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Page 33: Bl Start-Up Form
BL STARTUP FORM PAGE 1 of 2 DATE:___________________ JOB NAME:_________________________________________________________________________________________ ADDRESS:_________________________________________________________________ MODEL No:______________ CITY, STATE:______________________________________________________________ SERIAL No:______________ START-UP CONTRACTOR:___________________________________________________ TAG:____________________ PRE START-UP CHECKLIST Installing contractor shall verify the following items (cross out items that do not apply). 1. Is there any visible shipping damage? _________________________________________________ 2. - Page 34 BL STARTUP FORM PAGE 2 of 2 BOILERS BOILER WATER IN TEMP_______________F BOILER WATER OUT TEMP_______________F BOILER AMPS BOILER 1 BOILER 3 BOILER 2 BOILER 4 NOTES:...
- Page 36 BL SERIES BOILER • INSTALLATION, SERVICE & OWNERS INFORMATION MANUAL AAON, Inc. 2425 South Yukon Tulsa, Oklahoma 74107 Phone: (918) 583-2266 • Fax: (918) 583-6094 R53480 · Rev. A · 6-07...
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