IBC SFC-99 Installation And Operating Instructions Manual
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IBC SFC-99 Installation And Operating Instructions Manual

Combi boilers (natural gas or propane)
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WARNING: If the information in this manual is not followed exactly, a fire or
explosion may result causing property damage, personal injury, or loss of life.
Do not store or use gasoline or other flammable vapours and liquids or other
combustible materials 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 nearby 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.
Le manuel est également disponible en français. Visitez le portail << Technical Information Portal >> à notre
site web www.ibcboiler.com.
SFC-99, SFC-125
COMBI BOILERS
(Natural Gas or Propane)
www.ibcboiler.com

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  • Page 1 SFC-99, SFC-125 COMBI BOILERS (Natural Gas or Propane) WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury, or loss of life. Do not store or use gasoline or other flammable vapours and liquids or other combustible materials in the vicinity of this or any other appliance.
  • Page 2 Supplied with the unit - The SFC unit is shipped with an accessory parts kit consisting of the following items: • 1 x Wall Mounting Bracket, 4 x 1.75 “ bolts - IBC part P-837 • 1 x Condensate Trap Assembly •...
  • Page 3 SFC COMBI BOILERS SFC-99, SFC-125 SPECIFICATIONS SPECIFICATION SFC 99 SFC 125 CSA Input (Natural Gas or Propane) – MBH 15.5 - 99 16.5 - 99 CSA Input (Natural Gas or Propane) – KW 4.54 - 29.0 4.84 - 29.0 CSA Output – MBH 14.8 - 88.9...
  • Page 4 SFC COMBI BOILERS SFC-99, SFC-125 DANGER BURN ° Water temperature over 125°F (52°C) can cause severe burns instantly or death from scalds. ° Children, disabled, and elderly are at highest risk of being scalded. ° See instruction manual before setting temperature at water heater.

  • Page 5: Table Of Contents

    SFC COMBI BOILERS SFC-99, SFC-125 CONTENTS 1.0 INSTALLATION ......... . 1-1 1.1 GENERAL.
  • Page 6 SFC COMBI BOILERS SFC-99, SFC-125 2.6 SPACE HEATING ..........2-6 2.6.1 Overview .
  • Page 7 SFC COMBI BOILERS SFC-99, SFC-125 5.3 WARNINGS AND FAULTS ......... . . 5-6 5.3.1 Warning Codes.
  • Page 8 SFC COMBI BOILERS SFC-99, SFC-125 PRE-INSTALLATION CHECK DANGER Carefully consider clearances and access, vent travel and termination, gas Should overheating occur supply, condensate removal and combustion air supply. or the gas supply fails to shut off, do not turn off or...

  • Page 9: Installation

    SFC COMBI BOILERS SFC-99, SFC-125 1.0 INSTALLATION NOTE When using the SFC units 1.1 GENERAL for non-domestic purposes the warranty conditions and maintenance periods SFC series gas-fired modulating units are low pressure, fully condensing units described in this document with variable input ranges (see specification chart - page 3) designed to be used are no longer valid.
  • Page 10 SFC COMBI BOILERS SFC-99, SFC-125 Bracket Figure 1b: Dimensions / Connections for SFC Series DESCRIPTION SFC SERIES UNITS Exhaust Outlet 3" Schedule 40 Combustion Air 3" Schedule 40 Cold Domestic Water 1/2" Male NPT Connection Hot Domestic Water 1/2" Male NPT...

  • Page 11: Code Requirements

    SFC COMBI BOILERS SFC-99, SFC-125 1.2 CODE REQUIREMENTS WARNINGS - Keep the unit area free The SFC units are certified under CSA 4.9 / ANSI Z21.13 and Water Heater CSA and clear of combustible 4.3 / ANSI Z21.10.3. materials, gasoline, and...

  • Page 12: Mobile Home Installations

    SFC COMBI BOILERS SFC-99, SFC-125 DISTANCE FROM RECOMMENDED DISTANCE DANGER SURFACE COMBUSTIBLE FOR INSTALLATION AND SURFACES SERVICE Do not common vent the SFC modulating series units with Front 2" 24" any other existing or new Rear 0" 0" appliance. 6" (labels may be difficult to read with Left Side 1.5"...

  • Page 13: Exhaust Venting And Air Intake

    SFC COMBI BOILERS SFC-99, SFC-125 1.4 EXHAUST VENTING AND AIR INTAKE WARNING Venting, condensate When you plan the installation, ensure that you consider appropriate venting drainage, and combustion materials, travel and termination decisions. In particular, you should manage the air systems for all IBC units impact of the steam plume typically at the exhaust terminal of a condensing unit.

  • Page 14: Applications

    SFC COMBI BOILERS SFC-99, SFC-125 Removal of an existing unit For each appliance remaining connected to the common venting system, you must follow the steps below. Before you begin, ensure that any other appliances connected to the common venting system are not in operation.

  • Page 15: Vent Travel

    Manufacturers of stainless steel Type BH venting systems must submit their approved transition fitting to IBC for evaluation and written approval. 1.4.3 Vent Travel PVC, CPVC or PPs (Rigid Single Wall) piping is the standard venting option that enables units to be vented up to 120 equivalent feet from the vent termination using 3".
  • Page 16 SFC COMBI BOILERS SFC-99, SFC-125 Follow all installation instructions supplied by the pipe and fitting manufacturer. Prior to assembly, ensure all venting components are clean of burrs/debris. Ensure that ingestion into the fan of PVC debris (left in the combustion air piping) is avoided.

  • Page 17: Venting Passage Through Ceiling And Floor

    IBC • Pipe clearances - no IBC requirements, but best practice allows a minimum 1/4" recommended minimum gap around the pipe to prevent binding and expansion noise. Follow local codes. requirements, and may •...
  • Page 18 SFC COMBI BOILERS SFC-99, SFC-125 Figure 6: Vertical Concentric Termination - Two Kits Figure 7: Vertical Concentric Termination - Single Kit DIRECT VENT CONCENTRIC ROOF TOP TERMINATION Roof Top Concentric Termination kits are approved for use with this unit. For vertical roof top concentric terminations, you must follow the installation instructions supplied with the venting material manufacturer.

  • Page 19: Sidewall Vent Termination

    SFC COMBI BOILERS SFC-99, SFC-125 1.4.6 Sidewall Vent Termination WARNINGS Direct Vent - Two Pipe - You must maintain at least the minimum separation of Sidewall direct vent applications must be vented as follows: exhaust vent termination • Both the inlet and exhaust terminations must be located on the same plane from unit’s intake air as...
  • Page 20 Approved Side Wall Termination Kits are listed below: (Alternative vent termination kits must be submitted to IBC for approval prior to installation.) • Ipex - #196984 – 2" PVC low profile termination kit •...
  • Page 21 Approved Concentric Side Wall Termination Kits are listed below: (Alternative vent termination kits must be submitted to IBC for approval prior to installation.) • Centrotherm – Innoflue #ICWT242 (2” termination) + ICTC0224 (2” transition to 2 pipe) •...
  • Page 22 SFC COMBI BOILERS SFC-99, SFC-125 Vent terminal clearance minimums are as follows: WARNINGS VENT TERMINAL MINIMUM CLEARANCES - In addition to preventing ingestion of chemical CANADIAN US INSTALLATIONS INSTALLATIONS contaminants, care must be taken to ensure air A= Clearance above grade,...

  • Page 23: Direct Vent" Combustion Air Intake Piping

    SFC COMBI BOILERS SFC-99, SFC-125 INSIDE CORNER DETAIL FIXED CLOSED OPERABLE FIXED CLOSED OPERABLE V VENT TERMINAL X AIR SUPPLY INLET AREA WHERE TERMINAL IS NOT PERMITTED Figure 15: Vent Terminal Clearance 1.4.7 “Direct Vent” Combustion Air Intake Piping The unit must always be installed as a Direct Vent venting system with the combustion air piped directly from the outdoors to the unit’s combustion air...

  • Page 24: Closet Installations

    SFC COMBI BOILERS SFC-99, SFC-125 Intake Pipe Sizing For 3" Flexible PPs, you can use up to 35 actual lineal feet in a nominally vertical orientation (>45°). The equivalent length of 3" Flexible PPs must be calculated using a multiple of 1.4:1, e.g. 35' x 1.4 = 49' equivalent. The balance of the venting allowance is still available for use with rigid PPs piping material.

  • Page 25: Condensate Removal

    1.5 CONDENSATE REMOVAL WARNING Fill the trap with water before IBC’s specified vent configuration promotes the safe drainage of moisture first firing the unit to prevent from the unit and exhaust venting without flowing liquids back through the heat exhaust fumes from entering exchanger.

  • Page 26: Cleaning The Condensate Trap

    SFC COMBI BOILERS SFC-99, SFC-125 1.5.3 Cleaning the Condensate Trap Turn off the power to the water heater and allow it to cool down. Twist the condensate trap cup toward the left and lower the trap cup. Rinse out the trap cup and refill with water. Inspect the trap, and clean the interior portion of the trap (attached to the unit).
  • Page 27 SFC COMBI BOILERS SFC-99, SFC-125 DANGER The water in the condensate neutralizer can cause severe burns to the skin. Use extreme caution when servicing the condensate neutralizer. Wear protective gloves and eyewear. CAUTION When a condensate neutralization package is installed, the pH of the...

  • Page 28: Water Piping - Space Heating

    SFC COMBI BOILERS SFC-99, SFC-125 1.6 WATER PIPING - SPACE HEATING 1.6.1 General Piping Considerations The SFC series units include a factory installed, integral heating pump. The pump is designed to provide adequate flow through the unit and near unit piping.
  • Page 29 SFC COMBI BOILERS SFC-99, SFC-125 Figure 21: Relief Piping System Piping System piping is connected to the unit using the 3/4" NPT Male threaded fittings located on the bottom of the unit. We recommend using unions and gate or ball valves at the unit’s supply and return water connections to simplify servicing.
  • Page 30 SFC COMBI BOILERS SFC-99, SFC-125 WARNING During operation, the relief valve may discharge large amounts of steam and/or hot water. To reduce the potential for bodily injury and property damage, a discharge line MUST be installed that: 1. Is connected from the...
  • Page 31 SFC COMBI BOILERS SFC-99, SFC-125 Figure 23 illustrates that the SFC series integral space heating pump can be WARNINGS hydraulically separated from the distribution pump by (A) closely-spaced tees, or by (B) a low-loss header. Although best practice is primary/secondary, in some...

  • Page 32: Basic Heating Piping Arrangements

    SFC COMBI BOILERS SFC-99, SFC-125 Schematics for several piping layouts are provided herein, and additional WARNING application drawings showing basic design options are available at www. ibcboiler.com. You must conform the piping design to one of the provided Water quality has a significant...
  • Page 33 Multiple unit piping - Benefits and installation rules NOTE Multiple IBC SFC Series units can be installed in a single heating system to The piping drawings in this provide redundancy, increased output, and greater heating plant turn-down manual are simple schematic capabilities.
  • Page 34 SFC COMBI BOILERS SFC-99, SFC-125 Figure 26: Typical one temperature space heating piping concept with direct domestic hot water – concept drawing. This drawing is only a simple schematic guide. Figure 27: Space heating piping concept with closely-spaced tees on secondary loop.
  • Page 35 SFC COMBI BOILERS SFC-99, SFC-125 Figure 28: Typical two temperature space heating piping concept with domestic hot water – concept drawing. This drawing is only a simple schematic guide. Figure 29: Air handler and direct domestic hot water – parallel piping for low loss heat emitter concept drawing.
  • Page 36 SFC COMBI BOILERS SFC-99, SFC-125 Figure 30: Air handler and direct domestic hot water – primary/secondary concept drawing. This drawing is only a simple schematic guide. 1-28 INSTALLATION AND OPERATION INSTRUCTIONS...

  • Page 37: Domestic Hot Water System

    SFC COMBI BOILERS SFC-99, SFC-125 1.7 DOMESTIC HOT WATER SYSTEM WATER HEATER INSTALLATION GUIDELINES WARNING ° This unit must be installed in accordance with local codes, if any; if not follow the National Fuel Gas Code, ANSI Z223.1/NFPA 54, or the Natural Gas and Propane Installation Code, CAN/CSA B149.1, as applicable.

  • Page 38: Domestic Hot Water Piping

    SFC COMBI BOILERS SFC-99, SFC-125 1.7.1 Domestic Hot Water System WARNING The SFC series units have an independent piping circuit for efficiently generating HOT WATER CAN SCALD! Domestic Hot Water. When a faucet is opened to draw hot water, water flow is Water Temperatures over 125°F...
  • Page 39 SFC COMBI BOILERS SFC-99, SFC-125 If required by local code, you can install a field-supplied domestic hot water NOTE thermostatic mixing valve on the outlet of the SFC Series unit to prevent excessively hot water from reaching a faucet if the unit is used in a high temperature heating See Domestic Hot Water system.
  • Page 40 SFC COMBI BOILERS SFC-99, SFC-125 CAUTION The field supplied thermostatic mixing valve may be installed on the direct domestic hot water piping connections at the unit or at the outlet of a domestic hot water storage tank if using the domestic hot water function.

  • Page 41: Gas Piping

    SFC COMBI BOILERS SFC-99, SFC-125 1.8 GAS PIPING The unit must have an inlet gas pressure of at least 4.0" w.c. for natural gas and propane. For either fuel, the inlet pressure shall be no greater than 14.0" w.c. WARNING Confirm this pressure range is available with your local gas supplier.

  • Page 42: Removing The Cover

    SFC COMBI BOILERS SFC-99, SFC-125 Removing the cover WARNING To remove the cover, unscrew the two 5mm hex bolts on the undersides of the Do not apply power to any front corners. Lift the cover up firmly. connection point on the controllers terminal strips.
  • Page 43 SFC COMBI BOILERS SFC-99, SFC-125 NOTES - The IBC unit (like any modern appliance that contains electronic equipment), must have a “clean” power supply, and can be disabled by power surges and spikes, lightning strikes and other forms of severe electrical “noise”.

  • Page 44: Power Quality And Electrical Protection

    SFC COMBI BOILERS SFC-99, SFC-125 External probe type low water cutoff device You can link a field-supplied, external safety device to the unit by connecting the safety device in series with the unit’s 120V main power supply. If the unit is being used only as a direct domestic hot water unit an external low water cut-off device is not required.

  • Page 45: Thermostat / Sensor Wiring

    SFC COMBI BOILERS SFC-99, SFC-125 Figure 38: Terminal strip for connection of the DHW Aquastat (optional), thermostat or end switch(es) (mandatory), outdoor sensor (optional) 1.9.4 Thermostat / Sensor Wiring A thermostat from a single zone heating system can be connected directly to the controller’s X13 terminals 1 and 2.
  • Page 46 95,0 mm SFC COMBI BOILERS SFC-99, SFC-125 SFC series Schematic Wiring Diagram Flue Sensor Ignition Power Plug 120V Heat ex. Sensor Space Heating Presure Sensor DHW Hot NTC CH Supply NTC Boiler DHW Flow Sensor Pump Gasvalve Blower Motor Aquastat or...

  • Page 47: Unit System Operation

    The unit is equipped with a factory-installed pump. The pump is pre-wired and will operate with any call for space heating and when heating an IBC indirect water heater. The pump will not operate with a call for domestic hot water using the unit’s internal domestic hot water tankless coil.

  • Page 48: Control

    SFC COMBI BOILERS SFC-99, SFC-125 2.2 CONTROL ICON FUNCTION Numerical Display Main Display Plus & Minus Temperature Adjustment Flame Burner ON Indicator Power ON Indicator Faucet DHW Indicator Radiator Heating Indicator Wrench Service / Reset Return Arrow Enter / Save...
  • Page 49 SFC COMBI BOILERS SFC-99, SFC-125 2.3.2 Programming Mode There are two parameters available in the User Setup Menu. See also separate SFC Controller manual. The controller has four levels: User Menu, Installer Menu (code 15), a Master Installer Menu (code 20), RF Menu (code 30). See separate publication SFC controller manual for details.
  • Page 50 SFC COMBI BOILERS SFC-99, SFC-125 Adjusting the Domestic Hot Water Temperature NOTE To adjust the DHW: The domestic hot water 1. Touch the area above the dot. thermostat is adjusted to its lowest temperature position 2. Touch the Faucet button.

  • Page 51: Tankless Domestic Hot Water Modes

    SFC COMBI BOILERS SFC-99, SFC-125 2.4 TANKLESS DOMESTIC HOT WATER MODES 2.4.1 Tankless Domestic Hot Water - Standard and ECO Comfort Modes Standard Mode (OFF): The unit will respond to a call for domestic hot water as a priority over the space heating demand. When the domestic hot water demand is satisfied the unit will return to the space heating load if the load is still calling.

  • Page 52: Adding Domestic Hot Water Storage

    SFC COMBI BOILERS SFC-99, SFC-125 2.5 ADDING DOMESTIC HOT WATER NOTE STORAGE The correct 10KΩ temperature sensor (or aquastat) must be used to operate the indirect water heater properly. If the 2.5.1 Tankless Domestic Hot Water with a Storage incorrect sensor is used...

  • Page 53: Sequence Of Operation

    SFC COMBI BOILERS SFC-99, SFC-125 2.7 SEQUENCE OF OPERATION NOTE The unit is equipped with a The unit operates in a similar way for both a space heating and a domestic hot frost protection feature. This water call for heat. When the unit is powered up the controller enters a self- feature operates the unit’s...
  • Page 54 SFC COMBI BOILERS SFC-99, SFC-125 PAGE INTENTIONALLY LEFT EMPTY INSTALLATION AND OPERATION INSTRUCTIONS...

  • Page 55: Startup & Commissioning

    SFC COMBI BOILERS SFC-99, SFC-125 3.0 STARTUP & COMMISSIONING 3.1 LIGHTING & SHUTTING DOWN THE UNIT STARTUP AND COMMISSIONING...

  • Page 56: Prior To Start-Up

    SFC COMBI BOILERS SFC-99, SFC-125 SFC COMBI BOILERS SFC-99, SFC-125 3.2 PRIOR TO START-UP 3.2.1 Pre-Ignition Checks DANGERS Fill the condensation trap. Ensure the venting system is complete and seal- - Fill trap with water before tested. Confirm that any common venting system at the installation site is...
  • Page 57 SFC COMBI BOILERS SFC-99, SFC-125 To verify the proper operation of the gas valve in the field, the following procedure WARNING can be carried out by a qualified technician (see diagrams on this page). Check the rating plate of the Turn off the unit’s manual gas valve.

  • Page 58: Fuel Conversion

    SFC COMBI BOILERS SFC-99, SFC-125 SFC COMBI BOILERS SFC-99, SFC-125 3.4 FUEL CONVERSION The SFC series modulating unit is factory fire-tested to operate with natural gas. DANGER The rating plate is marked to indicate which fuel the particular unit has been set up with.

  • Page 59: Gaining Access To Combustion Chamber, Burner Removal Instructions

    SFC COMBI BOILERS SFC-99, SFC-125 WARNING Each SFC series unit is equipped with a back flow valve installed at the outlet of the fan. Inspect the back flow flapper annually. Figure 43: Back Flow Valve Figure 44: Blower and Gas Valve Assembly 3.4.1 Gaining access to combustion chamber, burner...
  • Page 60 SFC COMBI BOILERS SFC-99, SFC-125 SFC COMBI BOILERS SFC-99, SFC-125 When removing the heat exchanger cover in step 7, be careful CAUTION: NOTE not to damage the burner and refractory material located on the opposite side of the heat exchanger cover. Use caution when handling refractory materials.

  • Page 61: Maintenance

    SFC COMBI BOILERS SFC-99, SFC-125 4.0 MAINTENANCE WARNINGS 4.1 UNIT MAINTENANCE - Fill the trap with water before the unit is first fired to prevent exhaust fumes from entering the room. Never 4.1.1 General Care operate the unit unless the •...

  • Page 62: Heat Exchanger

    SFC COMBI BOILERS SFC-99, SFC-125 4.1.6 Heat Exchanger CAUTION During annual inspection (with the heat exchanger cover removed), examine The heat exchanger has a the heat exchanger for signs of contamination and clean if necessary. In areas small amount of combustion...

  • Page 63: System Treatment

    This fluid NOTE must be replaced. IBC highly recommends using a system pressurization unit such Installers should contact as an Axiom Industries model MF200 to refill and pressurize your system. Capture...

  • Page 64: Fan And Gas Valve Removal Instructions

    SFC COMBI BOILERS SFC-99, SFC-125 DESCRIPTION DANGER Water Pressure 150 psi 40 psi When servicing or replacing Programmable water temperature 149°F (65°C) 104°F (40°C) the fan, you must transfer the venturi from the old fan to the Minimum Flow Rate to Activate DHW Sensor 0.5 GPM...

  • Page 65: Troubleshooting

    SFC COMBI BOILERS SFC-99, SFC-125 5.0 TROUBLESHOOTING The troubleshooting section is divided into four sections: NOTE 5.1 Preliminary Checks This unit is equipped with a 5.2 Electronic Components blocked vent shut-off system 5.3 Warnings and Faults that closes the gas supply when it detects an irregular 5.4 Other Faults...

  • Page 66: Electronic Components

    SFC COMBI BOILERS SFC-99, SFC-125 5.2 ELECTRONIC COMPONENTS This section details the method for troubleshooting the non-standard electronic components on the unit, including the electronic water pressure sensor-type LWCO and the temperature sensors. 5.2.1 Temperature Sensors The resistance of the temperature sensors varies inversely with temperature. To...

  • Page 67: Fan/Blower

    SFC COMBI BOILERS SFC-99, SFC-125 5.2.2 Fan/Blower Control and power to the fan is provided via a single wiring harness to the controller. 5.2.3 Thermostat Connections The unit’s controller is designed to heat a single space heating load. The load can consist of a single zone or several zones.

  • Page 68: Flue Gas Temperature Sensor

    SFC COMBI BOILERS SFC-99, SFC-125 5.2.5 Flue Gas Temperature Sensor This sensor ensures that the unit shuts down safely if the heat exchanger or the venting system becomes blocked. The flue gas temperature sensor is located at the top of the rear flue passage, below the top panel.

  • Page 69: Dhw Tank Sensor

    5.2.9 DHW Tank Sensor The SFC series units allow the use of a tank sensor for controlling the domestic hot water tank temperature. IBC Indirect water heaters come with a 10KΩ sensor. An Aquastat can also be used. If a field supplied domestic hot water sensor is used, it must be a 10KΩ sensor matching the following table.

  • Page 70: Warnings And Faults

    SFC COMBI BOILERS SFC-99, SFC-125 5.3 WARNINGS AND FAULTS 5.3.1 Warning Codes During operation the controller can detect unusual situations and can take action to avoid damage to the heat exchanger or other unsafe operations. During these situations, the controller limits the temperature and power output of the burner, or temporarily disables operation entirely.
  • Page 71 SFC COMBI BOILERS SFC-99, SFC-125 F007 No or insufficient flame current. • Check the ignitor. • Check the wiring of the ignitor for breakage/shutdown. • Replace the ignitor. F008 Incorrect fan speed • Check the fan cable. • Check and/or replace the fan.

  • Page 72: Other Faults

    SFC COMBI BOILERS SFC-99, SFC-125 5.4 OTHER FAULTS 5.4.1 No heat (central heating) fault codes POSSIBLE ANALYSIS POSSIBLE SOLUTION CAUSES The power LED is not → Yes • Check the power supply. shown. • Check the fuse (see Electrical schematic).

  • Page 73: Central Heating System Remains Too Warm

    SFC COMBI BOILERS SFC-99, SFC-125 5.4.3 Central heating system remains too warm POSSIBLE CAUSES ANALYSIS POSSIBLE SOLUTION Room thermostat / weather-dependent → Yes • Check the wiring. control is defective or has Check the OpenTherm, On/Off connection of the unit, or the connection between the central heating unit and the a short circuit.

  • Page 74: Burner Ignites Loudly

    SFC COMBI BOILERS SFC-99, SFC-125 POSSIBLE CAUSES ANALYSIS POSSIBLE SOLUTION Central heating pressure is too low. → Yes Top off the central heating system until the central heating pressure is between 1 and 2 bar. ↓No The flue is blocked.

  • Page 75: Diagrams

    SFC COMBI BOILERS SFC-99, SFC-125 6.0 DIAGRAMS 6.1 - PARTS DIAGRAMS 6.2 - WIRING DIAGRAMS DIAGRAMS...
  • Page 76 SFC COMBI BOILERS SFC-99, SFC-125 6.1 PARTS DIAGRAMS SFC Series modulating unit - Parts assembly Diagram 6.1-1: Unit assembly parts For information on the contents of P-kits, visit the Technical Information portal at www.ibcboiler.com. INSTALLATION AND OPERATION INSTRUCTIONS...
  • Page 77 Venturi insert SFC 125 # 500 180-133 P-821 Gas line (gas valve to fan) 180-210 P-822 Gas line O-ring 150-245 Boiler pump, SFC 180-130 P-823 *Pump gasket x 2 * See next page for gasket package for SFC-99/125; includes all gaskets asterisked above DIAGRAMS...
  • Page 78 P-730 Condensate trap 180-230 P-884 Boiler pressure sensor 180-221 P-834 Boiler supply water temperature sensor 240-178 P-888 Control unit 180-247 P-855 Boiler mounting bracket 250-809 P-837 P-838 Gasket package for SFC-99/125; includes all gaskets asterisked above INSTALLATION AND OPERATION INSTRUCTIONS...
  • Page 79 SFC COMBI BOILERS SFC-99, SFC-125 95,0 mm 6.2 WIRING DIAGRAMS SFC series Schematic Wiring Diagram Ignition Power Plug Flue Sensor 120V Heat ex. Sensor Space Heating Presure Sensor DHW Hot NTC CH Supply NTC Boiler DHW Flow Sensor Pump Gasvalve...

  • Page 80: Installation & Commissioning Report

    INSTALLATION & COMMISSIONING REPORT Unit Details: Model Number _____________________ Serial Number ______________________________________________ Date of Installation ______________ Address of installation __________________________________________ _____________________________________________________________________________________________ User contact information _______________________________________________________________________ Installer Information Company ___________________________________________________________________ Address ______________________________________________________________________________________ Phone/Fax/E mail ____________________________________________________________________________ Fuel Natural Gas Propane Gas Supply Pressure (high fire) _______ Inches w.c. Measured Rate of Input (high fire) ____________ Btu/hr Installation instructions have been followed and completed (Section 1 of Installation and Operating Instructions).

  • Page 81: Service Record

    SERVICE RECORD DATE LICENSED CONTRACTOR DESCRIPTION OF WORK DONE...
  • Page 82 • This unit is not used for any space heating. • This unit is part of a modular or multiple unit system having a total input 300,000 BTU/hr or greater. • This unit is equipped with a tankless coil. US installers should contact IBC for any further information required.

  • Page 83: Revision History

    REVISION HISTORY DECEMBER 2018 Initial release MARCH 2019 Miscellaneous minor revisions made. APRIL 2019 References to maintaining the units. JUNE 2019 Updated drawings and made minor textual changes. NOVEMBER 2019 Concept drawings and tables on water quality. MARCH 2020 Updated table 5, figures 1b, 2, 36 and 45. AUGUST 2020 Updated part descriptions and numbers, specification table, Figure 28 and 29, minor textual changes...
  • Page 84 IBC Technologies USA Inc. 8015 North Fraser Way 1702 Taylors Lane Burnaby, BC Cinnaminson, NJ 08077 Canada V5J 5M8 Toll Free: 1.844.432.8422 Tel: 604.877.0277 Tel: 856.887.0544 Fax: 604.877.0295 Fax: 856.735.5584 www.ibcboiler.com www.usa.ibcboiler.com 120-236-R6 84100406 August 2020 © IBC Technologies Inc. 2020...

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