U.S. Boiler Company Citadel 400 Installation, Operation And Maintenance Manual
  1. Manuals
  2. Brands
  3. U.S. Boiler Company Manuals
  4. Boiler
  5. Citadel 400
  6. Installation, operation and maintenance manual

U.S. Boiler Company Citadel 400 Installation, Operation And Maintenance Manual

399-1000 mbh hot water boiler indoor/outdoor
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
INSTALLATION, OPERATION, AND
MAINTENANCE MANUAL
399-1000 MBH Hot Water Boiler Indoor/Outdoor
CTD Models
CTD400B
CTD500B
CTD650B
CTD800B
CTD1000LB
Model:
Installation Date:
Heating Contractor:
Address:
U.S. Boiler Company, LLC
WARNING: If the information in these instructions
is not followed exactly, a fire or explosion may
result causing property damage, personal injury
or death.
Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any
other appliance.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not
use any phone in your building.
• Immediately call your gas supplier from a
neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call
the fire department.
Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
Serial Number:
System Type:
Phone/Email:
Lancaster, PA
PN: 111959-01
Save this manual for future reference.
 WARNING
WARNING
 DANGER
DANGER
www.usboiler.net
Rev. 4, 6/24

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the Citadel 400 and is the answer not in the manual?

Questions and answers

Related Manuals for U.S. Boiler Company Citadel 400

Summary of Contents for U.S. Boiler Company Citadel 400

  • Page 1 CTD650B Installation and service must be performed by CTD800B a qualified installer, service agency or the gas CTD1000LB supplier. Model: Serial Number: Installation Date: System Type: Heating Contractor: Phone/Email: Address: U.S. Boiler Company, LLC Lancaster, PA www.usboiler.net...

  • Page 2: Table Of Contents

    Table of Contents I. Hazard Definitions Local Codes II. Read Before Proceeding Warranty Shipment Damage Connecting Gas Supply Line Gas Leakage (If you detect or smell gas...) Maintenance Product Identification Label Factory Test and Inspections Disclaimers and Local Codes III. Product Rating, Specifications, and Dimensional Data Unpacking and Inspection IV. Unpacking The Shipping Crate Check Equipment...
  • Page 3 Table of Contents General Piping Guidelines IX. Water Piping Factory Supplied Relief Valve Package Standard Piping Components Water Quality Oxygen Contamination Temperature Rise and Heat Exchanger Head Loss X. Water Piping Diagrams Guidelines and Requirements XI. Gas Piping Field Connecting Gas Supply Gas Pressure Switches General.

  • Page 4: Hazard Definitions

    I. Hazard Definitions 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. It is critical all personnel read and adhere to all information contained in DANGER, WARNING, and CAUTIONS. All DANGERS, WARNINGS, and CAUTIONS are for reference and guidance purpose, and, therefore, do not substitute for strict adherence to applicable jurisdictional and professional codes and regulations.

  • Page 5: Gas Leakage (If You Detect Or Smell Gas

    II. Read Before Proceeding (continued) H. Factory Test and Inspections  DANGER DANGER  1. Prior to shipment, final air-fuel adjustments are performed by factory trained service personnel This appliance MUST NOT be installed in any location on each appliance. The factory emissions report where gasoline or flammable vapors are likely to be is posted on the back of the front jacket panel as present or, in an environment that contains corrosive...

  • Page 6: Product Rating, Specifications, And Dimensional Data

    III. Product Rating, Specifications, and Dimensional Data These boilers are condensing, high-efficiency, gas-fired, hot water boilers designed for space heating systems or indirect domestic water heating, where supply water temperature does not exceed 190°F. These boilers have special coil type stainless steel heat exchangers, constructed, tested, and stamped per Section IV of the ASME Boiler and Pressure Vessel Code, which provide maximum heat transfer and simultaneous protection against flue gas product corrosion.
  • Page 7 III. Product Rating, Specifications, and Dimensional Data (continued) LAMP Boiler 400-500 dimensional for manual 8 " 8 " 2 " Side View 8 " 2 " 8 " 2 " 8 " 4 " 8 " 8 " 43" 2 " 2 "...
  • Page 8 III. Product Rating, Specifications, and Dimensional Data (continued) LAMP Boiler 650-1000 dimensional for manual 8 " 8 " 8 " Side View 8 " 8 " 8 " 8 " 4 " 8 " 4 " 43" 2 " 8 " 2 "...

  • Page 9: Unpacking And Inspection

    IV. Unpacking The Shipping Crate A. Unpacking and Inspection  WARNING WARNING  1. Move appliance to approximate installation location. Failure to assure the lifting forks are long enough to extend at least half way through the base will 2. Remove all crate fasteners. result in the appliance tipping and potentially 3.

  • Page 10: Component Identification

    V. Component Identification Communication Interface (Concert Control) 17. Hot/outlet water temperature sensor Digital User interface for operational control of the Dual element temperature sensor for high limit appliance. control. Main appliance control 18. Cold/Inlet water temperature sensor Receives and processes input signals from safety Used for monitoring the inlet water temperature and switches and sensors to control the appliance.
  • Page 11 V. Component Identification (continued) Figure 4: Component Identification CTD 400-1000L I&O 111959-01 Rev 4, 6/24...

  • Page 12: General

    VI. Pre-Installation and Mounting  WARNING WARNING A. General  1. Installation must conform to the requirements of Apply supplied silicone lubricant to the gasket the authority having jurisdiction or, in the absence inside the vent connector. Failure to apply lubricant of such requirements, to the National Fuel Gas could result in flue gas leaks or gasket deterioration.

  • Page 13: Appliance Mounting

    VI. Pre-Installation and Mounting (continued) 5. An elevated base/pad is required when the floor is Table 4: Corrosive Combustion Air Contaminants not level or in areas where water could accumulate Contaminants to Avoid: around the appliance. The base must be able to Spray cans containing chlorofluorocarbons support the weight of the appliance, water, and all (CFC’s)

  • Page 14: 400-1000L Stacking

    VI. Pre-Installation and Mounting (continued) D. 400-1000L Stacking b. Use the included screws to secure the brace as 1. The 400-1000L models may be installed in a stacked shown in Figure 5. configuration. 4. The included outdoor venting kit will not work a.

  • Page 15: Clearances

    VI. Pre-Installation and Mounting (continued) NOTICE NOTICE E. Clearances 1. This appliance is listed for 0" clearance to This appliance is listed for zero inch clearance combustible materials. The clearances for to combustible or noncombustible material, but serviceability are found in Table 5. installing the appliance with smaller than the clearances for serviceability will limit access for 2.

  • Page 16: General Venting Guidelines

    VII. Venting A. General Venting Guidelines  WARNING WARNING  1. Install vent system in accordance with National This appliance must not be installed in a room Fuel Gas Code, ANSI Z223.1/NFPA 54 or Natural under negative pressure. These direct vent gas Gas and Propane Installation Code, CAN/CSA fired appliances are allowed a maximum leakage B149.1 Installation Code for Canada, or, applicable...

  • Page 17: Field Installation

    VII. Venting (continued) C. Field Installation 5. Design the air intake system to allow 3/8” (9.5mm) 1. A factory installed 4" PVC slip or 6" cast aluminum of thermal expansion per 10 ft. (3m) of CPVC/ collar provides a means for air intake connection. PVC pipe.
  • Page 18 VII. Venting (continued) Table 9: Listed Vent Manufacturers and Materials Make Stainless Steel Brand Polypropylene Brand DuraVent FasNSeal PolyPro Heat Fab Saf-T Vent EZ Seal* Z-Flex (Nova Flex Group) Z-Vent Z-DENS Centrotherm InnoFlue SW Rigid Note: Included appliance connection is a 3-in-1 adapter that permits Stainless Steel, Polypropylene, or CPVC. Adapting to Z-DENS requires 4"...

  • Page 19: Room Air For Combustion

    VII. Venting (continued) D. Room Air for Combustion  CAUTION CAUTION  1. If using room air for combustion (intake), install the included screen to the intake opening of the Use all CPVC vent kit components for vent piping appliance. near the appliance before transitioning to Schedule a.

  • Page 20: General Termination

    VII. Venting (continued) G. General Termination b. When installed on the same wall, locate vent terminal 4 vent pipe diameters above the 1. Use only listed vent/combustion air terminals. combustion air terminal. The snorkel configuration 2. Follow the termination configurations shown can be used when penetrations are at the same in Table 13, and see Table 16 for acceptable height.
  • Page 21 VII. Venting (continued) 7. If window and/or air inlet is within 4 ft. (1.2 m) 13. Maintain minimum 24 in. (610 mm) horizontal of an inside corner, maintain at least 6 ft. (1.8 m) spacing between vent terminal and a building spacing between terminal and adjoining wall of corner.
  • Page 22 VII. Venting (continued) Table 14: Direct Vent Terminal Clearances Canadian Installations US Installations Clearance above grade, veranda, 18 in. (46 cm) 12 in (30 cm) porch, deck, or balcony 6 in (15 cm) for appliances ≤ 6 in (15 cm) for appliances 10,000 Btuh (3 kW), 12 in (30 ≤...
  • Page 23 VII. Venting (continued) Table 15: Other than Direct Vent Terminal Clearances Canadian Installations US Installations Clearance above grade, veranda, 18 in (46 cm) 12 in (30 cm) porch, deck, or balcony 6 in (15 cm) for appliances ≤ 10,000 Btuh (3 kW), 12 in (30 4 ft (1.2 m) below or to side of Clearance to window or door that cm) for appliances >...

  • Page 24: Vent And Combustion Air Terminations

    VII. Venting (continued) H. Vent and Combustion Air Terminations NOTICE NOTICE 1. Vent Piping Methods of securing and sealing terminals to a. Install fire stops where vent passes through the outside wall must not restrain the thermal floors, ceilings or framed walls. The fire stop expansion of the vent pipe.
  • Page 25 VII. Venting (continued) Table 16: Table of Acceptable Terminations Flue Gas Vent Terminations Sidewall Roof Straight Termination Tee Termination Vertical Run Tee Termination Vertical Run 20°-45° Elbow Terminated Downward Velocity Cone Combustion Air Intake Terminations Sidewall Roof Two 90° Elbows Terminated Downward 90°...
  • Page 26 VII. Venting (continued) 6 Pipe Diameters Min. 24 in. Min. Bird Screen From Intake Vent & Intake Bird Screen Vent Vent & Intake 12 in. Min. Above Snow Line Vent 4 Pipe Diameters min. Combustion Combustion Grade/Snow Line 12 in. min. Above Snow Line Figure 9: Horizontal Sidewall Termination Figure 10: Slopped Roof Termination...

  • Page 27: Multiple Appliance Terminations

    VII. Venting (continued) I. Multiple Appliance Terminations  WARNING WARNING The joint between the terminal and the last  1. Vent Piping Terminations piece of pipe must be outside of the building. a. Multiple appliance vent terminations are shown in Figure 12. b. Each individual appliance must have its own The vent for this appliance shall not terminate: vent pipe and vent terminal unless a common 1.
  • Page 28 VII. Venting (continued) 6D Min.  WARNING WARNING  The required spacing between vent and combustion air terminals is to prevent flue gas recirculation. 4D Min. Recirculation of flue gas products into the combustion air supply can cause damage to property or the appliance.

  • Page 29: Polypropylene Venting

    VII. Venting (continued) K. Polypropylene Venting  WARNING WARNING  1. Running Flexible Polypropylene Vent (Liner) Asphyxiation Hazard. Vent systems made by listed PP Through Unused Chimney Chase vent system manufacturers rely on gaskets for proper a. It is the responsibility of the installing contractor sealing.
  • Page 30 VII. Venting (continued) NOTICE NOTICE Pressure drop for flexible polypropylene line is 20 % greater than from rigid pipe. Multiply measured flexible polypropylene liner length by 1.2 to obtain equivalent length. Maximum equivalent vent length of flexible poly- propylene liner is 48 ft. (14.6 m). Installation of a polypropylene vent system should adhere to the vent manufacturer's installation in- structions supplied with the vent system.
  • Page 31 VII. Venting (continued) b. Natural gas and propane installation code specifies c. When an air supply duct is used to supply venting systems and air supply for appliances. Air combustion air, its discharge opening shall be supply shall be provided when either an appliance located where there is no possibility of cold air or a combination of appliances has a total input affecting steam/water lines or other temperature...

  • Page 32: Removing Existing Appliance

    VII. Venting (continued) NOTICE NOTICE M. Removing Existing Appliance When an existing appliance is removed from a common Please note that the information provided in this venting system, the common venting system is likely to be manual relative to the Canadian Standard is not too large for proper venting of the remaining appliances.

  • Page 33: Special Installation Requirements For Massachusetts

    VII. Venting (continued) N. Special Installation Requirements for Massachusetts 1. For all sidewall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes and where the sidewall exhaust vent termination is less than seven (7) feet above grade, the following requirements shall be satisfied: a.

  • Page 34: Condensate Trap

    VIII. Condensate Disposal A. Condensate trap NOTICE NOTICE 1. The condensate trap is located inside the appliance Do not crimp condensate drain lines or reduce jacket behind the front door panel. drain line inner diameter size, unless adapting to a. The flue gas trap prevents flue gases from a neutralizer kit.

  • Page 35: Common Condensate Pump/Sump

    VIII. Condensate disposal (continued) C. Common Condensate pump/Sump NOTICE NOTICE 1. A common condensate pump/sump may be used. Flue gas condensate is corrosive. Route condensate Run separate piping from each condensate drain drain line in a manner such that any condensate to the sump.

  • Page 36: General Piping Guidelines

    IX. Water Piping These boilers are designed to operate in a closed loop pressurized system. Minimum pressure in the boiler must  WARNING WARNING  be 14.5 psi (100 kpa). Proper operation requires a piping system that can provide sufficient water flow through the Failure to properly pipe appliance may result in boiler and meet the water quality requirements.

  • Page 37: Water Outlet Connection

    IX. Water Piping (continued) Flow Water Outlet Connection Brass Bushing is installed by factory. Flow switch sensor and o-ring are shipped in a bag inside the jacket. Field Installed Factory Installed Figure 15: Relief Valve Package Assembly Table 18: Outlet Piping Parts B.

  • Page 38: Standard Piping Components

    IX. Water Piping (continued) C. Standard Piping Components  WARNING WARNING  1. Pressure relief Valve (Required) a. The pressure relief valve must be installed with Scald Hazard. Pressure relief valve discharge shall spindle in vertical position. Installation of the be piped in such a way to prevent or eliminate pressure relief valve must comply with ASME potential burn risk.

  • Page 39: Water Quality

    IX. Water Piping (continued) D. Water Quality Table B1: Water Quality Requirements 1. The water directly in contact with the appliance Quality Parameter Min. Max. must meet the requirements in this section. Failure to adhere to the water treatment requirements Water Hardness (gpg) in this manual can cause damage not covered Total Dissolved Solids (ppm) by warranty to the appliance, pumps, or other...

  • Page 40: Oxygen Contamination

    IX. Water Piping (continued) b. Eliminate and/or repair fittings which allow oxygen E. Oxygen Contamination absorption. 1. Continuous addition of make-up water will constantly c. Use of non-permeable materials in the distribution add oxygen to the system and lead to corrosion. system.

  • Page 41: Temperature Rise And Heat Exchanger Head Loss

    IX. Water Piping (continued) F. Temperature Rise and Heat Exchanger Head Loss 1. This heat exchanger adds pressure drop to the system which must be accounted for in the design of the piping configuration and pump selection. 2. The system should be designed to maintain the operating water flow rate shown in Table 19. Exceeding the maximum water flow rates can cause pipe erosion, component damage, and decreased performance.

  • Page 42: Water Piping Diagrams

    X. Water Piping Diagrams Figure 16: Single Boiler, Primary/Secondary Piping Header Sensor System Pump Air Vent To System Expansion Tank Make Up Water Dirt Separator From System Pressure Reducing Valve Check Valve Isolation Valve Purge Valve Y-Strainer Boiler CIrculator No more than 12 inches or 4 pipe diameters At least 18"...
  • Page 43 X. Water Piping Diagrams (continued) Figure 17: Single Boiler with Indirect Domestic Water Heater Dirt Separator From System Expansion Tank Air Vent Header Sensor System Pump To System Purge Valve Y-Strainer Boiler Pump Make Up Water Flow Switch Pressure Reducing Valve (factory supplied) DHW Pump Hot Water...
  • Page 44 X. Water Piping Diagrams (continued) Figure 18: Multiple Boiler, Primary/Secondary with Common Header Piping System Pump Header Sensor To System Air Vent Make Up Water Dirt Separator From System Pressure Reducing Valve Expansion Tank Purge Valve Check Valve Y-Strainer Boiler Pump No more than 12 inches or 4 pipe diameters At least 18"...
  • Page 45 X. Water Piping Diagrams (continued) Multiple Boiler (Stacked), Primary Secondary Piping with Hydronic Separator Figure 19: Stacked Boilers Hydraulic separator System Pump To System Header Sensor Hydronic Separator From System Make Up Water Purge Valve Pressure Reducing Valve Expansion Tank Isolation Valve Boiler Pump Check Valve...

  • Page 46: Guidelines And Requirements

    XI. Gas Piping A. Guidelines and Requirements 12. Purge all air from gas lines. All installation must conform to the National Fuel Gas 13. Install manual shutoff valve in accordance with Code ANSI Z223.1/NFPA54, and/or local codes. In Can- state and local requirements. ada, installation must conform to the latest edition of 14.
  • Page 47 XI. Gas Piping (continued) Table 21: Maximum capacity of schedule 40 black pipe in CFH* Natural Gas, Inlet Pressure 14.0 in wc (3.4 kPa)or less; 0.5 in wc (0.12 kPa) Pressure Drop Nominal Inside Length of Pipe (Ft) Pipe Size Diameter (In) (In)

  • Page 48: Gas Pressure Switches

    XI. Gas Piping (continued)  WARNING WARNING Table 23: Specific Gravity Correction Factors  Specific Correction Specific Correction Failure to properly pipe gas supply to appliance may Gravity Factor Gravity Factor result in improper operation and damage. Always 0.60 1.00 0.90 0.82 assure gas piping is absolutely leak free and of the...

  • Page 49: General

    XII. Electrical A. General.  DANGER DANGER  Install wiring and electrically ground the appliance in Electrical Shock Hazard: Ensure all electrical accordance with authority having jurisdiction or, in the connections are disconnected before attempting absence of such requirements, follow the National installation or service of electrical components or Electrical Code, NFPA 70, and/or Canadian Electrical connections of the appliance or building.

  • Page 50: Routing Field Connections

    XII. Electrical (continued)  WARNING WARNING D. Routing Field Connections  1. 1. Route all field connections through conduits into Route all field connections through conduits into Appliance must be electrically grounded as re- the rear control box. the rear control box. quired by National Electrical Code ANSI/NFPA 2.
  • Page 51 XII. Electrical (continued) Figure 23: Low Voltage Connections PCB CTD 400-1000L I&O 111959-01 Rev 4, 6/24...
  • Page 52 XII. Electrical (continued) ITEMS SUPPLIED BY INSTALLER SERVICE OVERCURRENT SWITCH PROTECTION/ (OPTIONAL) DISCONNECT POWER SUPPLY 120/60/1 FLAME CONTROL IGNITER SENSOR COMBUSTION PANEL 120 VAC CONNECTIONS PCB GROUND SCREW TRANSFORMER 6.3A SLOW LWCO BLOW FUSE INLET / RETURN SENSOR SYSTEM PUMP GND TO CONTROL DHW PUMP/...
  • Page 53 XII. Electrical (continued) 120VAC/60Hz/1Ph (Line Voltage) 120V 120V Line L Line N Combustion (120V Conn.) B1-3 P3-6 P3-9 B1-1 Ground to control box B1-2 P3-3 Internal, non replaceable via mounting screws 24VDC P2-3 Wiring Legend Display Power Supply P2-1 Factory Wire Harness P2-2 Internal, non replaceable...
  • Page 54 XII. Electrical (continued) LWCO P3-12 L2-1 L2-3 P3-2 24V Transformer 24V Fuse, F3 Size 400: 1.6A Slow Blow 24V Transformer Control Panel Size 500-1000: 2.4A fast acting Ground Screw P8-8 L3-1 L3-2 Igniter Flame Sensor Enable/Disable Enable/ Enable/ P8-12 Control J8-3 J8-2 Disable...

  • Page 55: Check System Setup

    XIII. System Start-up  DANGER DANGER A. Check System Setup  1. Verify that the venting, water piping, gas piping Do not use matches, candles, or other open flame and electrical system are installed properly. Refer ignition sources to check for leaks. to installation instructions contained in this manual.
  • Page 56 XIII. System Start-up(continued) FOR YOUR SAFETY READ BEFORE OPERATING/P OUR VOTRE SECURITE LISEZ AVANT DE METTRE EN MARCHE     WARNING: If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. AVERTISSEMENT: Quiconque ne respecte pas à...

  • Page 57: Combustion Air/Fuel Adjustment

    XIII. System Start-up(continued) 4. Begin commissioning the appliance. Visually inspect e. If high fire O is too low (CO is too high), increase flame via sight glass window. On high fire the flame (decrease CO ) by turning the throttle screw should be stable and mostly blue.

  • Page 58: Field Conversion Of Gas Type

    XIII. System Start-up(continued) e. Once the appliance is operating within the 5. Use a combustion analyzer and follow the Air/Fuel specified high and low fire ranges, record adjustment instructions to set up high fire and low emissions, flue draft, and other important data. fire.

  • Page 59: Pump Control

    XIII. System Start-up(continued) F. Pump Control Table 28: Throttle Screw Starting Position Ensure the appropriate pump parameters are selected in the Pumps menu of the Concert control. Refer to Number of turns from closed Model the Concert Control manual for more information. Natural Gas/Propane Gas G.

  • Page 60: Service And Maintenance

    XIV. Service and Maintenance IMPORTANT PRODUCT SAFETY INFORMATION IMPORTANT PRODUCT SAFETY INFORMATION REFRACTORY CERAMIC FIBER PRODUCT REFRACTORY CERAMIC FIBER PRODUCT  WARNING WARNING  The Repair Parts list designates parts that contain refractory ceramic fibers (RCF). RCF has been classified as a possible human carcinogen.

  • Page 61: General Maintenance

    XIV. Service and Maintenance A. General Maintenance  WARNING WARNING  1. Keep the area around the appliance free from combustible materials. (Gasoline and other Read and understand the entire manual before flammable vapors and liquids) attempting installation, start-up, operation, or 2.
  • Page 62 XIV. Service and Maintenance (continued) 4. Igniter Electrode a. Disconnect power to the unit and remove ignition  DANGER DANGER  electrode from the burner door. This appliance uses flammable gas, high voltage b. Visually inspect igniter assembly (ceramic electricity, moving parts, and very hot water under insulators, bracket, and graphite gasket) for high pressure.
  • Page 63 XIV. Service and Maintenance (continued) 6. Flue outlet connection  WARNING WARNING  a. Visually inspect flue outlet gasket for damage or deterioration, replace if necessary. Failure to properly secure the burner/blower/gas b. Any accumulation of soot or debris should be valve assembly to the heat exchanger could lead thoroughly cleaned out.

  • Page 64: Restarting After Prolong Shutdown

    XIV. Service and Maintenance (continued) 6 X M10 screws Figure 30: Burner Door Opening D. Restarting after Prolong Shutdown  WARNING WARNING  After prolonged shutdown, it is recommended that Operating this appliance with a cracked, dented, or the steps in "System Start-up" and "Service and otherwise damaged burner may cause flashback Maintenance"...

  • Page 65: Appendix A: Tables

    APPENDIX A: Tables I. Hazard Definitions II. Read Before Proceeding Table 1: Input and Output Ratings III. Product Rating, Specifications, and Dimensional Data Table 2: General Specifications Table 3: Appliance Connection Sizes IV. Unpacking The Shipping Crate V. Component Identification Table 4: Corrosive Combustion Air Contaminants VI. Pre-Installation and Mounting Table 5: 400-1000L Clearances Table 6: Vent and Combustion Air Pipe Diameters and Maximum Lengths VII. Venting Table 7: Equivalent lengths of Vent and Combustion Air Components Table 8: Vent and Combustion Air Equivalent Length Calculation Worksheet Table 9: Listed Vent Manufacturers and Materials Table 10: Stainless Steel Vent Terminations Table 11: Polypropylene Vent Terminations Table 12: Combustion Air and Flue Gas Flow Rates Table 13: Recommended Venting Configurations and Material Options Table 14: Direct Vent Terminal Clearances Table 15: Other than Direct Vent Terminal Clearances Table 16: Table of Acceptable Terminations Table 17: Condensate Neutralizer Kit VIII. Condensate Disposal Table 18: Outlet Piping Parts IX. Water Piping...

  • Page 66: Appendix B: Figures

    APPENDIX B: Figures I. Hazard Definitions II. Read Before Proceeding Figure 1: 400-500 Dimensions III. Product Rating, Specifications, and Dimensional Data Figure 2: 650-1000L Dimensions Figure 3: 400-1000L with Outdoor Trim IV. Unpacking The Shipping Crate Figure 4: Component Identification V. Component Identification Figure 5: 400-1000L Stacking Brackets and Display Rotation VI. Pre-Installation and Mounting Figure 6: Side by Side installation Figure 7: Outdoor Venting Installation VII. Venting Figure 8: Vent Terminal Clearances Figure 9: Horizontal Sidewall Termination Figure 11: Flat Roof Vent Terminations Figure 10: Slopped Roof Termination Figure 12: Multiple Appliance Direct Vent Termination Figure 13: Flexible Vent in Masonry Chimney with Separate Combustion Air Intake Figure 14: Condensate Drain Assembly VIII. Condensate Disposal Figure 15: Relief Valve Package Assembly IX. Water Piping Figure 16: Single Boiler, Primary/Secondary Piping X. Water Piping Diagrams...

  • Page 67: Percent Derate For Altitudes Above 2000 Ft

    APPENDIX C: High Altitude Installations Above 2000 ft A. Percent Derate For Altitudes Above 2000 ft.  DANGER DANGER  1. Use the derate table below for calculating the These instructions include a procedure for approximate input rate at the installation altitude. adjusting the air-fuel mixture on this appliance.

  • Page 68: Appendix D: Default Light-Off And Modulation Rates

    Air-Fuel Adjustment for High Altitude Installations High Fire O2% Range Low Fire O2% Range Altitude 2,001- 6,001- 8,001- 2,001- 6,001- 8,001- Model (ft) 6,000 8,000 10,100 6,000 8,000 10,100 5.0-5.5 5.0-5.5 5.7-6.1 5.5-6.0 No Application No Application 5.0-5.5 5.0-5.5 5.7-6.1 5.5-6.0 5.0-5.5 5.0-5.5...

  • Page 69: Appendix E: Gas Valve And Pressure Switch Tubing Schematics

    APPENDIX E: Gas Valve and Pressure Switch Tubing Schematics REV: DATE: DWN: ENG: APPD: APPD: REV: DATE: DWN: ENG: APPD: APPD: FIRST USE MATERIAL REV: PART NUMBER TITLE PROPERTY OF & DRAWING NUMBER SCALE DWG SIZE SHEET FIRST USE MATERIAL PART NUMBER TITLE FIRST USE PROPERTY OF...
  • Page 70 Notes CTD 400-1000L I&O 111959-01 Rev 4, 6/24...
  • Page 71 Blank Page CTD 400-1000L I&O 111959-01 Rev 4, 6/24...
  • Page 72 If a claim is made under this warranty during the “No Charge” period from the date of shipment, U.S. Boiler Company will, at its option, repair or replace the pressure vessel (not including labor).
  • Page 73 CONDENSING BOILER START-UP FORM (REFER TO THE PRODUCT MANUAL FOR QUESTIONS REGARDING THE INSTALLATION AND OPERATION OF THIS PRODUCT) JOB NAME: MODEL #: ADDRESS: SERIAL #: CITY: ZIP: DATE: GAS SUPPLY: Natural Gas Static Pressure (Unit Off): "wc Gas Pipe Diameter: "...
  • Page 74 U.S. Boiler Company, LLC P.O. Box 3020 Lancaster, PA 17604 1-888-432-8887 www.usboiler.net...

This manual is also suitable for:

Citadel 500Citadel 650Citadel 800Citadel 1000lCtd400bCtd500b ... Show all

Table of Contents