Download
Share
Print this page
Miura EX-300 Installation Manual
  1. Manuals
  2. Brands
  3. Miura Manuals
  4. Boiler
  5. EX-300
  6. Installation manual
Miura EX-300 Installation Manual

Miura EX-300 Installation Manual

Ex series high efficiency
Hide thumbs Also See for EX-300:

Advertisement

Quick Links

MIURA EX BOILER
170/250 PSI Designs
ENGINEERING
ENGINEERING
&
&
INSTALLATION
INSTALLATION
C
®
®
MANUAL
MANUAL
APPROVED
®
EX - HIGH EFFICIENCY SERIES
MIURA BOILER WEST, INC.
* IN OUR CONTINUING EFFORT TO IMPROVE OUR PRODUCT,
INFORMATION IN THIS MANUAL MAY BE CHANGED WITHOUT NOTICE
OWNER SHALL MAINTAIN THIS MANUAL IN LEGIBLE CONDITION FOR FUTURE REFERENCE
PUBLICATION REVISED MARCH 2000
ENGINEERING REVISED FEBRUARY 2000

Advertisement

loading

Related Manuals for Miura EX-300

Summary of Contents for Miura EX-300

  • Page 1 APPROVED ® EX - HIGH EFFICIENCY SERIES MIURA BOILER WEST, INC. * IN OUR CONTINUING EFFORT TO IMPROVE OUR PRODUCT, INFORMATION IN THIS MANUAL MAY BE CHANGED WITHOUT NOTICE OWNER SHALL MAINTAIN THIS MANUAL IN LEGIBLE CONDITION FOR FUTURE REFERENCE...

  • Page 2: Figure 1 Functional Outline Of Ex-300 And Economizer

    STOPS FEEDWATER PUMP INSULATION STARTS FEEDWATER PUMP AUTO “SURFACE” BLOWDOWN VALVE LOW WATER CUT OFF FLUE GAS OUTLET SAMPLE WATER THERMOCOUPLE CONDUCTIVITY SENSOR CASTABLE INSPECTION PORT FEEDWATER INLET MANUAL BOTTOM BLOWOFF INNER FEEDWATER PIPE Figure 1 Functional Outline of EX-300 and Economizer...

  • Page 3: Table Of Contents

    LIST OF ILLUSTRATION FIGURES LIST OF TABLES 1 SECTION ONE - INTRODUCTION 1.1 CODE AND REGULATORY AGENCIES 1.2 NATIONAL REGULATORY ORGANIZATIONS 1.2.1 MIURA BOILER STEAM GENERATORS (INSPECTOR BRIEFING) 1.3 STANDARD EQUIPMENT 1.4 GUARANTEE 1.5 DEFINITIONS AND SYMBOLS 1.6 ABOUT THIS MANUAL 1.7 OFFICES...
  • Page 4 4.1.6 FALSE SIGNALS 4.1.7 POWER OVERLOAD 4.1.8 AIR PRESSURE 4.1.9 FUEL GAS PRESSURE 4.1.10 FUEL OIL PRESSURE 4.2 ROUTINE BOILER OPERATION 4.2.1 PREPARATION BEFORE START-UP 4.2.2 START-UP 4.2.3.1 BLOW DOWN 4.2.3.1 BOTTOM BLOW DOWN 4.2.3.2 AUTOMATIC BOTTOM BLOW DOWN (OPTION) 4.2.4 SHUTDOWN 4.2.5 CAUTIONS DURING OPERATION 4.2.6 EXTENDED SHUTDOWN...
  • Page 5 LIST OF ILLUSTRATION FIGURES Figure 1 Functional Outline of EX-300 and Economizer Figure 2 Lifting and Handling Points Figure 3 Feed Water Pump Foundation and Installation Figure 4 Pump Base Mounting Holes Figure 5 Blower Foundation Dimensions Figure 6 Blower and Air Duct Assembly...
  • Page 6 LIST OF TABLES Table 1 EX Series Specifi cations (without Economizer) Table 2 EX Series Specifi cations (with Economizer) Table 3 EX Series Specifi cations Flue Gas Re-Circulation Table 4 EXH-100(S)G(O) Specifi cations Table 5 EXH-200 (S)G(O) Specifi cations Table 6 EXH-300 (S)G(O) Specifi cations Table 7 EX Series Feed Pump Foundation Dimensions Table 8 EX Series Blower Foundation Dimensions Table 9 Main Steam Outlet Connection Size...

  • Page 7: Section One - Introduction

    The North American network consists of branches in Chicago, Los Angeles, and Ontario. The parent company, Miura Boiler, Ltd. in Japan, is the leading manufacturer of boilers and other thermal equipment in the Pacifi c Rim holding more than 55% of the market. With factories in fi ve countries, production now exceeds 14,000 units per year.

  • Page 8: National Regulatory Organizations

    Division of Labor and Industry for the Local State or City Local Building and Construction Code Inspectors MIURA Boiler recommends contacting your actual insurance provider as well as the utility companies for assistance in identifying and complying with codes. 1.2 NATIONAL REGULATORY ORGANIZATIONS A.S.M.E.

  • Page 9: Miura Boiler Steam Generators (Inspector Briefing)

    High Fire. The long probe is the primary low water cut out. This safety can be confusing for the inspector who encounters the Miura steam generator in the fi eld for the fi rst time, because a water column typically equals a “fi...
  • Page 10 All Miura EX steam generators are annotated as a forced fl ow steam generator (with no fi xed steam or water level) on the pressure vessel’s P-3 form and registered with the National Board. The complete packaged steam generator is listed with UL as a standard and can be built to IRI, FM and /or ASME-CSD1 at customer request.

  • Page 11: Standard Equipment

    • Mounted Control Panel - wired with all necessary components (No Main Electrical Disconnect included) • Microprocessor based integrated burner controller with UV fl ame sensor • MIURA XJ1 micro-processor boiler control with fault history • Computer interface capability for remote monitoring by factory service department (Requires optional equipment)(Monitoring contract required) •...

  • Page 12: Guarantee

    Damage to the boiler or parts of the boiler after leaving the factory is not covered. Parts replaced under this warranty must be returned to MIURA. If the failed part is not returned, the customer will be charged for the new item.

  • Page 13: About This Manual

    If a question about boiler installation is not contained in the text of this manual and is not answered by one of the drawings, please call the MIURA representative or the company offi ces in Chicago or Los Angeles. We will be glad to help.

  • Page 14: Section Two - Specifications

    2 SECTION TWO - SPECIFICATIONS Table 1 EX Series Specifi cations (without Economizer) ITEM EX-100G(O) EX-200G(O) EX-250G(O) EX-300G(O) Utilization Horsepower 100 HP 200 HP 250 HP 300 HP Maximum Pressure 170 PSIG Design, 150 PSIG Maximum Operating Equivalent Output 3,450 LB/HR 6,900 LB/HR 8,625 LB/HR 10,350 LB/HR...

  • Page 15: Table 2 Ex Series Specifi Cations (With Economizer)

    Table 2 EX Series Specifi cations (with Economizer) ITEM EX-100SG(O) EX-200SG(O) EX-250SG(O) EX-300SG(O) Utilization Horsepower 100 HP 200 HP 250 HP 300 HP Maximum Pressure 170 PSIG Design, 150 PSIG Maximum Operating Equivalent Output 3,450 LB/HR 6,900 LB/HR 8,625 LB/HR 10,350 LB/HR Fuel Gas Heat Input 3,939,000 BTU/HR Gas...

  • Page 16: Table 3 Ex Series Specifi Cations Flue Gas Re-Circulation

    Table 3 EX Series Specifi cations Flue Gas Re-Circulation ITEM EX-100 SG(0)F EX-200 SG(0)F EX-250 SG(0)F Utilization Horsepower 100 HP 200 HP 250 HP Maximum Pressure 170 PSIG Design, 150 PSIG Maximum Operating Equivalent Output 3,450 LB/HR 6,900 LB/HR 8,625 LB/HR Fuel Gas Heat Input 3,939,000 BTU/HR Gas 7,876,000 BTU/HR Gas...

  • Page 17: Table 4 Exh-100(S)G(O) Specifi Cations

    Table 4 EXH-100(S)G(O) Specifi cations ITEM EXH-100G(O) EXH-100(S)G(O) Utilization Horsepower 100 HP 100 HP Maximum Pressure 250 PSIG Design, 225 PSIG Maximum Operating Equivalent Output 3,450 LB/HR 3,450 LB/HR Fuel Gas Heat Input 4,185,000 BTU/HR 3,939,000 BTU/HR Steam Heat Output 3,348,000 BTU/HR 3,348,000 BTU/HR Effi...

  • Page 18: Table 5 Exh-200(S)G(O) Specifi Cations

    Table 5 EXH-200(S)G(O) Specifi cations ITEM EXH-200 G(O) EXH-200 (S)G(O) Utilization Horsepower 200 HP 200 HP Maximum Pressure 250 PSIG Design, 225 PSIG Maximum Operating Equivalent Output 6,900 LB/HR 6,900 LB/HR Fuel Gas Heat Input 8,369,000 BTU/HR 7,876,000 BTU/HR Steam Heat Output 6,695,000 BTU/HR 6,695,000 BTU/HR Effi...

  • Page 19: Table 6 Exh-300(S)G(O) Specifi Cations

    Table 6 EXH-300(S)G(O) Specifi cations ITEM EXH-300G(O) EXH-300SG(O) Utilization Horsepower 300 HP 300 HP Maximum Pressure 250 PSIG Design, 225 PSIG Maximum Operating Equivalent Output 10,350 LB/HR 10,350 LB/HR Fuel Gas Heat Input 12,722,000 BTU/HR 11,964,000 BTU/HR Steam Heat Output 10,050,000 BTU/HR 10,050,000 BTU/HR Effi...

  • Page 20: Section Three - Installation

    However, if such damage occurs and is not discovered and noted at the time of delivery, MIURA Boiler is not responsible to pay for the cost of repairs and any damaged parts will not be under warranty.

  • Page 21: Assembling

    All Feed Water Pump foundations, if used, should have four (4) 5/8” holes for 1/2” anchor bolts. See Figure 3. These pump foundations are not supplied by MIURA. Place the Feed Water Pump on a foundation equivalent to Figure 4 and tighten mounting bolts. Note that the pump should be located under or close to the feed water tank.

  • Page 22: Feed Water Control Valves

    Again, the feed system operates in a simple On-Off manner. If control valves are used, they MUST be quick acting (within 5 seconds). MIURA Boiler recommends Ball Valves with pneumatic actuators (preferred) or electric actuators (acceptable). Note that the pneumatic actuators operate in 1 second, open to shut, and the electric actuators are 5 seconds open to shut.

  • Page 23: Table 8 Ex Series Blower Foundation Dimensions

    Figure 5 Blower Foundation Dimensions DIMENSION MODEL EX-100 19” 11 7/8” 17” 19” 11 1/2” EX-200 19” 11 7/8” 17” 19” 11 1/2” EX-250~300 20” 13” 19 1/4” 21 1/2” 12” Table 8 EX Series Blower Foundation Dimensions (2) - Hose Clamps (4) - 1/2”...

  • Page 24: Steam Separator Assembly

    3.2.4 Steam Separator Assembly EX-250/300 Only - attach steam separator to pressure vessel as shown in Figure 7. Torque bolts to 61.5 ft/lbs. 3/4” UNC x 3 1/2” L Minimum Torque; Approx 62 ft/lbs Conductivity sensor 5/8” UNC x 3” L will be removed for shipping.

  • Page 25: Boiler Positioning And Anchoring

    3.3 BOILER POSITIONING AND ANCHORING 3.3.1 Boiler Proper Mark boiler center line and boiler foundation corners on foundation. Recommended foundation is 6” concrete slab. Re-enforcement of slab is not necessary if fl oor is solid. Details of the boiler foundation and clearance dimensions are given on BOILER ASSEMBLY OUTSIDE VIEW drawing.

  • Page 26: Steam Piping

    MIURA Boilers do not have a manhole. All openings into the waterside of the pressure vessel are 2” standard pipe plugs. Consequently, most jurisdictions do not require a “NON RETURN VALVE” in multiple boiler installations.

  • Page 27: Feed Water System Piping

    3.5 FEED WATER SYSTEM PIPING Table 10 Feed Water Pump Suction Strainer Size ITEM EX-100 EX-200 EX-250 EX-300 Water Inlet pipe size (nominal) 1” NPT 1 1/4” NPT Feed water pump strainer size (nominal) 1 1/4” NPT 1 1/2” NPT...
  • Page 28 Feed Water Supply Tank as high as possible in the boiler room to prevent any possibility of Feed Water Pump damage due to cavitation. Specifi cally, MIURA requests that the tank water level be at least 6 feet above the pump suction.

  • Page 29: Feedwater Pump

    • Chemical feed can be made to Feed Tank and/or Feed Water Line. All MIURA Boilers are provided with a set of “DRY” contacts through terminal strip connections 30 and 34. These wires connect a Normally Open contact on the feed water pump magnetic contactor. MIURA recommends wiring the chemical injection pumps through this contact.
  • Page 30 The MIURA Design Advantage eliminates the need for this type of system. MIURA simply turns the pump on and off as needed based on actual boiler steam demand. This allows the pump to always run at optimum effi ciency and prevents pump-overheating problems.

  • Page 31: Table 11 Feed Water Pump Recommendations

    MIURA recommends installing a feed water suction strainer of at least 20 mesh. Install a strainer one size larger than pump suction piping. Pump fl ange kits are available from MIURA as an option. Also, install an isolation valve on the supply side of the strainer to allow cleaning the strainer without draining the feed water supply tank.

  • Page 32: Feed Water Control Valves

    3.6.2 Piping Flushing After installation is completed but before the boiler is fi red, fl ush all water piping. MIURA is not responsible for damage as a result of stuck open check valves that result from debris in the piping.

  • Page 33: Safety Relief Valves, Installation

    1” NPT Open Drain to Floor/Waste 3.7 SAFETY RELIEF VALVES, INSTALLATION ITEM EX-100 EX-200 EX-250 EX-300 EXH-300 Boiler Safety Valve Outlet 2” NPT 2 1/2” NPT 2 1/2” NPT 2x2 1/2” NPT 2x2 1/2” NPT Economizer Safety Valve 1” NPT...

  • Page 34: Blowdown Piping

    • Install an additional check valve between the automatic blow down solenoid valve and the blow down separator. (See Figure 18.) Check valve is not included with boiler. • Blow down separator after cooler for boiler water may be supplied by MIURA Boiler at customer request. Insure local regulations for disposal of boiler wastewater are followed.

  • Page 35: Figure 16 Blow Down Piping Arrangement

    Valve, install a Strainer upstream of the Control Valve. Figure 16 Blow Down Piping Arrangement Option Valves From Bottom Blow and L.V.C. MIURA Standard Quick Operating Valve To Blow Down Separator Figure 17 Double Blow Down Isolation Valve Options 3/8” Solenoid Valve (Note: EX-250~300 have t Solenoid Valves.)

  • Page 36: Fuel Supply Arrangements

    Installation of a pressure gage to monitor gas supply pressure is recommended. If the boiler is operated with propane fuel, MIURA Boiler STRONGLY recommends use of a vaporizer. Collecting the propane gas from the top of the tank is possible but not recommended due to variations in vapor space pressure depending on ambient air temperature.

  • Page 37: Figure 19 Typical Ex Series Gas Train And Vent Points

    Do not attempt to change any part of this gas train without fi rst consulting the nearest authorized MIURA dealer. • Do not use any gas piping with a diameter smaller than the gas inlet piping to the boiler.

  • Page 38: Figure 20 Main Gas Pressure Regulator Vent Piping

    Use drip leg or To exterior vent rain cap on vent line. Do not allow vent line 1” NPT to be blocked or to fi ll with rain water. Boiler operation will be Union adversely Fitting affected. Main Gas Regulator Figure 20 Main Gas Pressure Regulator Vent Piping To exterior vent.

  • Page 39: Oil Piping

    3. Fuel pump suction pressure should not exceed 3 psig in order to comply with National Fire Protection Code. 4. Fuel pressure at pump suction must NOT be at a vacuum. Do not use the MIURA supplied oil pump to draw oil up from the tank, through the overhead, and down to the boiler.

  • Page 40: Electrical Installation

    Disconnect Amps 1. Other voltages are available by special order. 2. Specifi cations for FGR option are not covered by this table. Contact Miura for details. 3. Optional equipment such as the MIURA remote communications system or the MIURA Multiple Installation (MI) system must be wired as specifi...

  • Page 41: Panel Layout

    Figure 25 Boiler Control Panel 3.10.2 Boiler Interface Capabilities The MIURA boiler has several options for remote monitoring. The standard equipment supplied with the boiler is a Honeywell S7896D Burner Control. The Honeywell 7800 series is a microprocessor based integrated burner control for automatically fi red gas or oil...

  • Page 42: Clearance

    Micro-Computer. The XJ1 is a microprocessor-based device designed to monitor the status of a series string of limit, control, and interlock contacts for The MIURA Boiler. The XJ1 acts as a system monitor and enhances fault and status messages of the S7800 series Burner Control. The SJ1 is included as standard equipment, and can provide detailed status on the boiler.

  • Page 43: Stacks And Breaching

    Please do not cover these fi ttings when insulating the exhaust stack. 10. One ½” drain plug fi tting is installed on the optional MIURA fl ue elbow, and one 2” drain plug is provided on the optional economizer.

  • Page 44: Figure 26 Stack Installation

    NOTE: The relationship between a stack draft and pressure drop of fl ue gas is given in the following equation. Miura boilers require a draft of zero inches w.c. to a maximum of -0.05 inches w.c. for proper operation. Operation outside these values will seriously impact boiler performance.

  • Page 45: Figure 28 Stack And Economizer Bolting Dimensions

    Flue Gas Sample Plug Drain EX-G/GO with Adaptor (Option) EX-G/GO without EX-SG/SGO with Economizer Economizer EX-100 EX-300 200~250 ID A (inches) 13 1/2 19 1/2 25 1/2 B x C (inches) 5/8 x 1 1/8 D holes E PD (inches) 28 3/8 F fl...

  • Page 46: Section Four - Operation

    4 SECTION FOUR - OPERATION DANGER: All cover plates, enclosures, and guards must be in place at all times, except during mainte- nance and servicing. 4.1 SAFETY FEATURES AND OPERATING CONTROLS 4.1.1 LOW WATER VOLUME CUT-OFF If the water volume, for any reason, fall below the pre-determined water volume, combustion will Pump immediately be stopped, a warning alarm will...

  • Page 47: Overheat Monitor Temperature

    4.1.2 OVERHEAT MONITOR TEMPERATURE If temperature at the overheat thermocouple on the water tubes should, for any reason, rise above the pre-set temperature (660°F), the overheat protection will be activated, thus shutting down the boiler and activating the alarm. The display will also show “HIGH W TUBE TEMP.” For testing this function, use the “Set Clock”...

  • Page 48: Misfire

    4.1.5 MIS-FIRE BURNER CONTROL If ignition is not achieved after the ignition period, burner operation will immediately be stopped. After a purge cycle, the safety switch of the Flame Safeguard will be activated, and a warning alarm will sound. The POWER display will indicate “FLAME FAILURE.”...

  • Page 49: Fuel Gas Pressure

    It is very important not to make any adjustments without fi rst consulting you nearest authorized MIURA dealer. Daily, or every shift, water analysis should be performed to see if additional treatment is needed. Use a tester of 1ppm or less sensitivity.

  • Page 50: Start-Up

    4.2.2 Start-Up CAUTION: The following start-up routine must be followed in sequence (1-7). 1. Open feed water inlet valves. 2. Open the main fuel valve and check that the required gas pressure (3-5 PSIG} on gas fi ring is available. 3.

  • Page 51: Automatic Bottom Blow Down (Option)

    This will ensure all sludge is removed. Complete draining of the Miura boiler is not dangerous to the boiler. When the boiler is completely drained, shut the blow down valves.

  • Page 52: Shutdown

    Proper balance of gas and airfl ow is needed to assure complete combustion and optimum effi ciency. Contact your nearest MIURA representative or distributor to adjust the air fl ow. MIURA recommends a combustion test every three months to ensure maximum combustion effi ciency.

  • Page 53: Carry Over

    4.2.7 Carry Over The Miura Boiler is tested and produces steam with less than 0.25% moisture. This steam quality can be adversely affected by several factors. 1. Poor water quality can produce “carry over.” The indications are foaming, priming, and misting.

  • Page 54: Water Specifications

    4.2.10 Water Specifi cations The chemistry values given in Table 15 are specifi c guidelines established by MIURA Boiler. Analysis is to be performed by the customer or a Boiler Water Treatment company. Failure to maintain these specifi cations will affect the Boiler Warranty.

  • Page 55: Section Five - Maintenance

    5 SECTION FIVE - MAINTENANCE 5.1 MAINTENANCE & CLEANING SCHEDULE In order to maintain the high effi ciency and to prevent costly breakdowns, perform the following maintenance and cleaning at the intervals shown below: Table 20 Recommended Periodic Maintenance Schedule REMARKS ON ITEM DAILY...

  • Page 56: Trouble Shooting

    This is a basic maintenance schedule. If the fuel or water is of exceptionally poor quality, increase the frequency of these checks. Compare the water quality with our standards and adjust the schedule accordingly. 5.2 TROUBLE SHOOTING 5.2.1 Physical Problem and Corrective Action Table 22 Physical Problems and Corrective Action Chart PROBLEM ITEM TO CHECK...
  • Page 57 Table 22 Physical Problems and Corrective Action Chart (continued) PROBLEM ITEM TO CHECK CAUSE REMEDY 1. Steam pressure above set None Wait for steam pressure to 5. Even after start button is pushed, fan motor point lower doesn’t start 2. Is thermal overload tripped? Faulty wires or faulty device Repair or replace 3.
  • Page 58 Table 22 Physical Problems and Corrective Action Chart (continued) PROBLEM ITEM TO CHECK CAUSE REMEDY 1. High limit switch Limit switch is set too high Adjust limit setting or 9. Steam is escaping from or broken replace Safety Valve 2. Pipe leading to steam Poor water condition or Clean pipe pressure switch is plugged...

  • Page 59: Operating Disciplines

    The overheat protection thermostat setting must never be changed without written authorization from MIURA. Failure to obtain authorization will result in voiding of all warranties. Changing this tempera- ture setting may be required if the customer chooses to raise or lower the boiler operating pressure.

  • Page 60: Table 23 Recommended Spare Parts List

    5.4 RECOMMENDED SPARE PARTS LIST Table 23 Recommended Spare Parts List PART NAME DESCRIPTION/PART # EX-100 EX-200 EX-300 Damper Coupling Lovejoy 5/8” x 7/16” L070 Rubber Assembly CL101100 Honeywell C7035A1031 Flame Eye FL100401 26A1B0-03 Floatless Switch SW102700 16B1A0-00-10 SW102800 32R-2911T (red)

  • Page 61: Recommended Spare Parts List

    5.4 RECOMMENDED SPARE PARTS LIST After the end of the parts warranty, it is not necessary to order replacement parts from MIURA. One of our design advantages is the use of non-proprietary parts. The electrical control components and assorted valves may be purchased from any industrial parts house.

This manual is also suitable for:

Ex-100goEx-100gEx-200goEx-200gEx-250goEx-250g ... Show all