IBC INTERGAS SFC Series Guide

USER’S INFORMATION MANUAL
www.ibcboiler.com
WARNING: If the information in this manual is not followed exactly, a fi re or
explosion may result causing property damage, personal injury, or loss of life.
Do not store or use gasoline or other fl ammable 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 fi re department.
Installation and service must be performed by a qualifi ed installer, service
agency or the gas supplier.
Ce manuel est également disponible en anglais - entrer en communication avec IBC ou visiter notre
site Web www.ibcboiler.com
SFC Series Combi Boilers
(Natural Gas or Propane)

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SFC COMBI BOILERS
SAFETY CONSIDERATIONS
Installation, start-up and servicing of IBC units must be done with due
care and attention, and should only be performed by competent, qualifi ed,
licensed and trained heating technicians. Failure to read and comply with
all instructions and applicable national and local codes may result in
hazardous conditions that could result in property damage and injury to
occupants which in extreme cases might result in death.
HAZARDS & PRECAUTIONS
WARNING
If the information in this
manual is not followed
exactly, a fi re or explosion
may result causing property
damage, personal injury, or
loss of life.
WARNING
Points out a potentially
hazardous situation which
must be avoided to prevent
serious injury or death.
CAUTION
Points out a potentially
hazardous situation which
must be avoided to prevent
possible moderate injury and/
or property damage
NOTE
Points out installation,
maintenance and operation
details that will result in
enhanced effi ciency, longevity
and proper operation of your
unit.
DANGER
Points out an immediately
hazardous situation which
must be avoided in order to
prevent serious injury or
death.
BEST PRACTICES
Points out recommendations
for better installation.

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Contents
UNIT’S CONTROLLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Turning Appliance ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Tankless Domestic Hot Water Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Tankless Domestic Hot Water - Standard, Comfort, and ECO Comfort Modes . . . . .10
SPACE HEATING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
LIGHTING & SHUTTING DOWN THE UNIT . . . . . . . . . . . . . . . . . . . . . . . .13
MAINTENANCE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
General Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Daily Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Annual Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Relief Valve - Maintenance and Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Domestic Hot Water System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
SERVICE RECORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

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SFC COMBI BOILERS
WARNING
Close fi ll valve after any
addition of water to the
system, to reduce risk of
water escapement.
WARNING
HOT WATER CAN SCALD!
Water Temperatures 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.
• Never leave then
unattended in or near the
shower, bathtub or sink.
• Never allow small children
to use a hot water faucet or
draw their own bath.
To avoid any potential scald
hazard or if codes require
specifi c water temperatures
at the hot water faucet, the
installer must:
•Install a thermostatic mixing
valve at this appliance
and ensure it is working
properly.
AND
•Set the thermostatic
mixing valve to the lowest
temperature which satisfi es
your hot water needs.
TO AVOID INJURY:
•Feel and adjust water
temperature before bathing
or showering.
•Water drained from the
system drain valve may be
extremely hot.
•Make sure all connections
are tight.
•Direct water fl ow away from
any person.
WARNING
Do not use this unit if any
part has been under water.
Immediately call a qualifi ed
service technician to inspect
the unit and to replace any
part of the control system and
any gas control that has been
under water.
DANGER
Should overheating occur
or the gas supply fails to
shut off, do not turn off or
disconnect the electrical
supply to the pump. Instead
shut off the gas supply at
a location external to the
appliance
WARNING
Keep unit area free and clear
of combustible materials,
gasoline, and other fl ammable
vapours and liquids.
WARNING
Combustion air must not be
drawn from areas containing
corrosive air from swimming
pools or spas, including air
directly next to outdoor pools
and spas.
WARNING
The unit must not be exposed
to water leaks from piping
or components located
overhead. This includes
condensation dropping from
un-insulated cold water lines
overhead.
WARNING
In areas of high snow fall,
users must check side wall
exhaust vent and air intake
terminations on a regular
basis to ensure blockages do
not occur.
WARNING
Bacteria growth can develop
in domestic hot water tanks
and indirect units if the
minimum water temperature
is not set high enough to
prevent its growth.

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Hotter water increases the risk of scald injury. Before changing the temperature setting, see
instruction manual.
This water heater 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.
Failure to correctly install and operate this appliance can result in severe personal injury
The water heater, if utilized, shall have a pressure relief valve installed within 6” [152mm] of the
DHW HOT outlet connection with the relief valve spindle installed in the vertical position.
The water heater, if utilized, requires a pressure relief valve identified with the ASME V or HV
symbol and set to relieve at or below 150psi of domestic water pressure and a minimum
For complete information refer to installation manual.
Read and follow warnings and instructions.
or death.
Refer to the Water Heater User’s Manual before operating relief valve.
relieving capacity of 199,000 Btu/hr with 3/4” NPT threads. For safe operation of the water
heater, the relief valve must not be removed from its designated point of installation or plugged.
Touch the panel above the White Dot twice, then touch the Tap. Adjust the water temperature
with the Plus + and Minus – then touch the Return button to save the changes.
ADJUSTABLE TEMPERATURE SETTING
CAUTION
WATER HEATER INSTALLATION GUIDELINES
WARNING
BURN
HOT
DANGER
° Water temperture 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.
° Feel water before bathing or showering.
° Temperature limiting valves are available, see manual.

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UNIT’S CONTROLLER
ICON FUNCTION
ANumerical Display Main Display
BPlus & Minus Temperature Adjustment
CFlame Burner ON Indicator
DWhite Dot Power ON Indicator
ETap DHW Indicator
FRadiator Heating Indicator
GWrench Service/Reset
HReturn Arrow Enter/Save
INumerical Display Service Display
Table 1: Controller Indicators and Buttons
INSTALLER INTERFACE
Turning Appliance ON/OFF
To turn on the unit, touch the area above the small white dot for 2 seconds. Now
only the white dot is illuminated.
To turn off the unit, touch the area above the small white dot for 2 seconds. A dash
appears to the right and the pressure psi displays to the left.

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Programming Mode
Adjusting the space heating water temperature
To access the main menu:
1. Touch the area above the white dot twice.
2. Touch the Space Heating button.
3. To change the value, touch the Plus or Minus buttons.
4. To save the changes, touch the Return button.
“P” to the right of the screen indicates that the changes have been saved.

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Adjusting the domestic hot water Temperature
To adjust the DHW:
1. Touch the area above the white dot.
2. Touch the Tap button.
The tankless domestic hot water temperature target appears on the main
display.
3. To change the DHW temperature target, touch the Plus or Minus buttons.
4. To:
• Save the changes, touch the Return button.
• Exit without saving the changes, touch the On/Off button.

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TANKLESS DOMESTIC HOT WATER MODES
Tankless Domestic Hot Water - Standard, Comfort, and
ECO Comfort Modes
Standard Mode (OFF): The unit’s heat exchanger will not maintain its domestic
hot water temperature between demands for hot water. 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 satisfi ed the unit will return to the space
heating load if the load is still calling.
Comfort Mode (ON): The unit’s heat exchanger is maintained at the DHW
temperature.
ECO Comfort Mode (ECO): This mode operates like the comfort mode but has
the added advantage of learning when the domestic hot water is used. During the
low use periods, the heat exchanger is allowed to cool.
To switch between the 3 modes:
1. Touch the area above the white dot.
2. Touch the Tap button twice.
3. Touch the Plus or Minus buttons.
NOTE
The domestic hot water
thermostat is adjusted to its
lowest temperature position
when shipped from the
factory. It’s recommended to
set the domestic hot water
thermostat to 120°F/49°C as
an initial setting and further
adjust as required. For
energy effi cient operation,
this setting should be set
as low as practical for the
consumer’s needs.
NOTE
The unit is equipped with
a Frost Protection feature.
This feature will operate the
unit’s burner to help protect
the unit from freezing. IBC is
not responsible for damages
to the unit, and/or related
components, nor property
damages that may result from
freezing conditions.

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4. To:
• Save the changes, touch the Return button.
• Exit without saving the changes, touch the On/Off button.
SPACE HEATING
The SFC series unit is designed to be installed in a primary/secondary type
piping system. The unit comes complete with a factory installed pump. The pump
is guaranteed to circulate heating system water through the unit’s heat exchanger
and primary loop piping only. The building’s distribution piping system may
require a dedicated pump or pumps to provide circulation of the space heating
water through the heating system. The unit can operate a separate building pump
(120V 1.0 AMP max).
Zoning of the space heating system can be accomplished many ways. Several
control packages are available from your local wholesaler and offer an easy
method of connecting the zoning system to the unit. Example piping and
electrical drawing are available at www.ibcboiler.com
The unit supplies heat to the space using an outdoor reset line. With an outdoor
sensor installed the unit will automatically adjust its space heating water
temperature based on the parameters programmed into the unit. See separate
publication SFC controller manual for parameter information. If the outdoor
sensor is not installed, the unit will use the temperature set in the User Setup
menu “Boiler Supply Temperature” to supply hot water to the space heating
system.
SEQUENCE OF OPERATION
The unit operates in a similar way for both a space heating and a domestic
hot water call for heat. When the unit is powered up the controller enters a self
diagnostic mode and displays 2 in the Service Display.
The sequence of operation is as follows:
1. The unit receives a call for heat from closing terminals X13.1 and X13.2
(24 volts section). The unit can also receive a call from domestic hot water
heating from the internal fl ow sensor, or from a 10KΩ sensor or aquastat
(X13.4 and X13.5 in 24V terminal).
2. The unit does a safety check and energizes the fan for a pre-purge (Service
Display = 3).

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3. Once the 5 second pre-purge is compete, the unit enters a 5 second trial for
ignition (Service Display = 4). If the unit fails to ignite, the unit will compete a
5 second inter-purge then another 5 second trial for ignition. This is repeated
4 times before a hard lock out occurs. The Return button must be
pressed to reset the controller and allow for another attempt.
4. Once the burner is lit and fl ame has been proven the unit operates as it is
programmed (Service Display = for Space Heating or for Domestic
Hot Water).
5. If the unit reaches its target temperature and there is still a call for heat or hot
water. Burner will turn off (integral pump runs unless call is on-demand DHW
). (Service Display = 1).
6. After the call for heat is satisfi ed, the pump will operate for an adjustable
amount of time (Service Display = 0).
7. If the burner is on to maintain the heat exchanger temperature for DHW
(Service Display = 7).
8. If the burner is on for frost protection (Service Display = 9).
MAIN
DISPLAY
LIT
DISPLAY
DESCRIPTION
(blank) - The unit is OFF. Touch the space above the white
button to turn on the unit.
(blank) (blank) No Call for Heat - Standby
XXX 0 Unit pump running – pump post purge
XXX 1 Unit’s water temperature reached target – -pump is
energized, call for heat still present
XXX 2 Self-test – When power is applied to the unit the
controller enters a self diagnostic mode for 5 seconds
XXX 3 Fan Pre-purge , Inter-purge and Post-purge
XXX 4 Trial for Ignition and Flame Proving
XXX
+
Heating – Space Heating
XXX
+
Heating – DHW
XXX 7 Burner on for Comfort mode
XXX 9Freeze Protection mode
Table 2: Operating Display and Service Display Codes.
NOTE
The correct 10KΩ temperature
sensor (or aquastat) must
beused to operate the indirect
unit properly. If the incorrect
sensor is used the domestic
hot water may overheat
causing serious injury or
death.

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LIGHTING & SHUTTING DOWN
THE UNIT

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MAINTENANCE
General Care
•
Keep combustible materials and fl ammable liquids and vapours away from the unit.
•Keep vent terminals clear of obstructions (snow, dirt, etc.).
Daily Maintenance
•Check all the daily maintenance items.
•Check the domestic hot water temperature at the faucet to ensure the
temperature is not too hot. If the temperature is too hot, you can adjust the
water temperature with the unit’s controller. If these adjustments are not
correcting the issue, call your qualifi ed service technician for service.
•Check the pressure relief valve and discharge piping for signs of leakage
or moisture. If water or moisture is found, contact your qualifi ed service
technician as soon as possible for service.
•Check the condensate trap and outlet pipe. The condensate trap shall be full
of water. The outlet hose may be connected to a condensate neutralizer, if so,
check the pH of the water coming out of the neutralizer is above 6.0pH. If the
pH is below 6.0 then the neutralizer will need to be re-charged or replaced.
Contact your qualifi ed service technician for service.
Annual Maintenance
The unit must be inspected by your qualifi ed service technician for the following:
• Inspect the fl ue gas exhaust and air intake connections. All connections
should be tight and leak free.
• Inspect fl ue gas exhaust piping, combustion air piping and terminations.
•Inspect the unit’s interior and vacuum if required.
•Check for water, gas and condensate leaks in the unit and around the unit.
• Check the condensate trap and clean if required. Re-fi ll the trap and re-install.
•Check the water pressure.
•Check the electrical connections.
•Check the ignition electrode and remove oxidation from the electrode.
Replace if necessary.
•Check the gas valve and ignition cable.
•Check the controller settings.
• Check the burners fl ame. Should be a quick and quiet ignition across the full
burner.
•If required, clean the heat exchanger and the burner.
WARNING
Annual Maintenance must
only be done by a qualifi ed
service technician.

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Relief Valve - Maintenance and Testing
The relief valve manufacturer requires that under normal operating conditions
a “try lever test” must be performed every two months. Under severe service
conditions, or if corrosion and/or deposits are noticed within the valve body, you
must test more often. Also perform a “try lever test” at the end of any non-service
period.
Test at or near maximum operating pressure by holding the test lever fully open
for at least 5 seconds to fl ush the valve seat free of sediment and debris. Then
release the lever and permit the valve to snap shut.
If the lever does not activate, or there is no evidence of discharge, discontinue
use of equipment immediately, and contact a licensed contractor or qualifi ed
service personnel.
If the relief valve does not completely seal, and fl uid continues to leak from
the discharge pipe, perform the test again to try and fl ush any debris that may
be lodged in the valve. If repeated attempts fail to stop the leakage, contact a
licensed contractor or qualifi ed service personnel to replace the valve.
While performing a “try lever test”, a quantity of heat transfer fl uid will be
discharged from the piping system, and the system pressure will drop. This fl uid
must be replaced. IBC highly recommends using a system pressurization unit
such as an Axiom Industries model MF200 to refi ll and pressurize your system.
Capture the discharged fl uid in a container and recycle it by returning it to the
system feeder unit. This is particularly important when your system contains
treatment chemicals or glycol solutions. If the system employs plain water, turn
on the unit’s auto fi ll valve to recharge the lost fl uid.
Domestic Hot Water System
Quality of the domestic cold water is very important to the longevity of the unit.
The recommended pH of the domestic water is between 6.5 and 8.5. The internal
domestic water heat exchanger tubing and the fl ow sensor is subject to fouling if
exposed to hard water (over 1.68 grains of hardness) or has a TDS of 500mg/L
or higher. See Table 3.
DESCRIPTION MAX MIN
Water Pressure 150 psi 40 psi
Programmable water temperature 149°F (65°C) 104°F (40°C)
Minimum Flow Rate to Activate DHW Sensor N/A 0.5 GPM
Acceptable pH range 8.5 pH 6.5 pH
Total Dissolved Solids 500 mg/L
Total Hardness 200 mg/L 11.68 gr/gal
Aluminum 0.05 to 0.2 mg/L
Chlorides 250 mg/L
Copper 1.0 mg/L
Iron 0.3 mg/L
Manganese 0.05 mg/L
Zinc 5 mg/L
Table 3: Domestic Water Quality Guidelines
CAUTION
Before testing the relief valve,
make certain the discharge
pipe is properly connected to
the valve outlet and arranged
to contain and safely dispose
of equipment discharge.

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SERVICE RECORD
DATE LICENSED CONTRACTOR DESCRIPTION OF WORK DONE

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Revision History
R0 DECEMBER 2018 Initial release
R1 NOVEMBER 2019 Table on water quality modifi ed.

IBC Technologies Inc.
8015 North Fraser Way
Burnaby, BC
Canada V5J 5M8
Tel: [phone]
Fax: [phone]
Toll Free: 1.844.432.8422
www.ibcboiler.com
120-234-R1
84102401
NOVEMBER 2019
© IBC Technologies Inc. 2019
IBC Technologies USA Inc.
1702 Taylors Lane
Cinnaminson, NJ 08077
USA
Tel: [phone]
Fax: [phone]
www.usa.ibcboiler.com