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SFC 199 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.
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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 •...
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SFC BOILER / WATER HEATERS - SFC 199 SPECIFICATIONS SPECIFICATION SFC 199 CSA Input (Natural Gas or Propane) – MBH 28.3 - 125 CSA Input (Natural Gas or Propane) – KW 8.29 - 36.6 CSA Output – MBH 27.1 - 111 CSA Output - KW 7.94 - 32.5...
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SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 5.3.1 Warning Codes..........5-6 5.4 OTHER FAULTS .
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SFC BOILER / WATER HEATERS - SFC 199 PRE-INSTALLATION CHECK DANGER Carefully consider clearances and access, vent travel and termination, gas Should overheating occur or supply, condensate removal and combustion air supply. the gas supply fail to shut off, do not turn off or disconnect...
SFC BOILER / WATER HEATERS - SFC 199 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units described in this document with variable input ranges (see specification chart - page 3) designed to be used are no longer valid.
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SFC BOILER / WATER HEATERS - SFC 199 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 ¾" Male NPT Connection Hot Domestic Water ¾”...
SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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"...
SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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.
Manufacturers of stainless steel Type BH venting systems must submit venting connection is locked their approved transition fitting to IBC for evaluation and written approval. in place. 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".
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SFC BOILER / WATER HEATERS - SFC 199 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.
IBC • Pipe clearances - no IBC requirements, but best practice allows a minimum ¼" recommended minimum gap around the pipe to prevent binding and expansion noise. Follow local codes. requirements, and may •...
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SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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 •...
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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 •...
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Ensure that the termination and venting are sloped back to the unit. Approved Concentric Side Wall Termination Kits are listed below: (Alternative vent termination kits must be submitted to IBC for approval prior to installation.) Figure 14: Prohibited installation •...
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SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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.
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.
SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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...
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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.
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SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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...
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SFC BOILER / WATER HEATERS - SFC 199 • Between the unit’s outlet and any isolation valve to ensure the pressure NOTE relief valve cannot be isolated by closing a valve. We recommend a valve kit designed for this purpose to reduce installation time and to reduce the space See Domestic Hot Water Warnings on page 1-29.
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SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 1.9 ELECTRICAL CONNECTIONS WARNING Do not apply power to any Electrical wiring to the unit (including grounding) must conform to local electrical connection point on the codes and/or National Electrical Code, ANS/NFPA No. 70 – latest edition, or The controllers terminal strips.
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SFC BOILER / WATER HEATERS - SFC 199 To install an external junction box to supply power and access to up to two pump NOTES relays: - The IBC unit (like any modern Pull out the controller as shown in Figure 34.
SFC BOILER / WATER HEATERS - SFC 199 1.9.2 Power Quality and Electrical Protection In areas of unreliable power, appropriate surge protectors and / or power conditioning equipment should be installed to protect the unit. 1.9.3 Zone Valve and Zone Pump Connections Zoning can be accomplished with either zone pumps or zone valves.
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SFC BOILER / WATER HEATERS - SFC 199 Figure 39: Electrical Wiring Connections (full page ladder diagram at back of this manual) 1-37 INSTALLATION...
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SFC BOILER / WATER HEATERS - SFC 199 PAGE INTENTIONALLY LEFT EMPTY 1-38 INSTALLATION AND OPERATION INSTRUCTIONS...
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.
SFC BOILER / WATER HEATERS - SFC 199 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...
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SFC BOILER / WATER HEATERS - SFC 199 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).
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SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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...
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SFC BOILER / WATER HEATERS - SFC 199 PAGE INTENTIONALLY LEFT EMPTY INSTALLATION AND OPERATION INSTRUCTIONS...
SFC BOILER / WATER HEATERS - SFC 199 SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 The gas valve will automatically de-rate the maximum input in accordance with WARNING the density altitude, by approximately 2% per 1,000’ above sea level. The gas valve’s zero governor will ensure that the gas-air mixture is not be affected at Check the rating plate of the altitude.
SFC BOILER / WATER HEATERS - SFC 199 SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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...
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SFC BOILER / WATER HEATERS - SFC 199 SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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 •...
SFC BOILER / WATER HEATERS - SFC 199 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...
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...
SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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...
SFC BOILER / WATER HEATERS - SFC 199 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.
SFC BOILER / WATER HEATERS - SFC 199 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.
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.
SFC BOILER / WATER HEATERS - SFC 199 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.
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SFC BOILER / WATER HEATERS - SFC 199 F007 No or insufficient flame current. • Check the ignitor. • Check the wiring of the ignitor for breakage. • Replace the ignitor. F008 Incorrect fan speed • Check the fan cable.
SFC BOILER / WATER HEATERS - SFC 199 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).
SFC BOILER / WATER HEATERS - SFC 199 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 room thermostat.
SFC BOILER / WATER HEATERS - SFC 199 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 14.5 and 29 psi (1 and 2 bar).
SFC BOILER / WATER HEATERS - SFC 199 6.0 DIAGRAMS 6.1 - PARTS DIAGRAMS 6.2 - WIRING DIAGRAMS DIAGRAMS...
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SFC BOILER / WATER HEATERS - SFC 199 6.1 PARTS DIAGRAMS SFC 199 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...
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SFC BOILER / WATER HEATERS - SFC 199 BOM ID Part Description Part # P-Kit # 180-203 P-809 Combustion air intake fitting and screen Flue exhaust fitting 180-204 P-810 Ignition module 180-202 P-811 Rear flue duct 180-239 P-813 *Flue / Heat Ex Gasket...
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SFC BOILER / WATER HEATERS - SFC 199 BOM ID Part Description Part # P-Kit # DHW Water Flow sensor 180-220 P-827 180-130 P-823 Boiler pump *Pump gasket 180-263 Return temperature boiler sensor NTC for 15 mm tube 240-117 P-852...
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).
SERVICE RECORD DATE LICENSED CONTRACTOR DESCRIPTION OF WORK DONE...
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• 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.
REVISION HISTORY R0 DECEMBER 2018 Initial release R1 MARCH 2019 Miscellaneous minor revisions made. R2 October 2019 Additions to the Specifications table and update of piping diagrams and parts list. R3 March 2020 Updated images. R4 August 2020 Updated Specifications table, miscellaneous updates to text and images. R5 September 2020 Miscellaneous minor revisions made.
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