DC Series Combi Boilers
HC Series Boilers
(Natural Gas or Propane)
USER’S INFORMATION MANUAL
WARNING: If the information in this manual is not followed exactly, a re or
explosion may result causing property damage, personal injury, or loss of life.
Do not store or use gasoline or other 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 re department.
Installation and service must be performed by a qualied installer, service
agency or the gas supplier.
This Manual is also available in French - contact IBC or visit our web site www.ibcboiler.com
www.ibcboiler.com
DC/HC SERIES BOILERS
WARNING
If the information in this
manual is not followed
exactly, a re or explosion
may result causing property
damage, personal injury, or
loss of life.
SAFETY CONSIDERATIONS
Installation, start-up and servicing of IBC boilers must be done with due
care and attention, and should only be performed by competent, qualied,
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
DANGER
Points out an immediately
hazardous situation which
must be avoided in order to
prevent serious injury or
death.
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
BEST PRACTICES
Points out recommendations
for better installation.
NOTE
Points out installation,
maintenance and operation
details that will result in
enhanced efciency, longevity
and proper operation of your
boiler.
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
CONTENTS
CONTROL ..............................................................8
USER – INSTALLER INTERFACE ...........................................8
TANKLESS DOMESTIC HOT WATER MODES ................................10
OPERATING AND SERVICE DISPLAY CODES ................................11
LIGHTING AND SHUTTING DOWN THE BOILER..............................12
MAINTENANCE.........................................................13
PARTS DIAGRAMS ......................................................16
SERVICE RECORD ......................................................20
USER’S INFORMATION MANUAL
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DC/HC SERIES BOILERS
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
WATER HEATER INSTALLATION GUIDELINES
WARNING
This boiler 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
or death.
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.
Refer to the Boiler User’s Manual before operating relief valve.
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
relieving capacity of 124,000 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.
For complete information refer to installation manual.
Read and follow warnings and instructions.
CAUTION
Hotter water increases the risk of scald injury. Before changing the temperature setting, see
instruction manual.
ADJUSTABLE TEMPERATURE SETTING
Press the and hold for 2 seconds, then press again. When the LED is lit, the
USER’S INFORMATION MANUAL
Domestic Hot Water temperature can be set.
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DC/HC SERIES BOILERS
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 not water faucet or
draw their own bath.
To avoid any potential scald
hazard or if codes require
specic water temperatures
at the hot water faucet, the
installer must:
• Install the factory supplied
thermostatic mixing valve at
this appliance and ensure it
is working properly.
AND
• Set the thermostatic
mixing valve to the lowest
temperature which satises
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 ow away from
any person.
WARNING
Close ll valve after any
addition of water to the
system, to reduce risk of
water escapement.
WARNING
Water quality has a signicant
impact on the lifetime and
performance of an IBC Boiler
heat exchanger.
Improperly prepared water in
a heating circuit may cause
damage to the heat exchanger
through corrosion or fouling.
Repeated or uncontrolled
water lls will increase the
potential for damage.
High levels of dissolved
solids or minerals may
precipitate out of the uid
onto the hottest part of the
heat exchanger, impairing
heat transfer and resulting in
overheating and premature
failure. The amount of solids
that may form on the heat
exchanger will depend on
the degree of hardness and
the total water volume in the
system. A high water volume
system with a low hardness
count may cause as much
damage as a system with less
volume and higher hardness,
so it is recommended to treat
water so as to remove all
dissolved solids. Other water
chemistry allowable limits are
as follows:
• Acidity pH is to be between
6.5 and 8.5
• Chloride is to be less than
125 mg/l
• Iron is to be less than 0.3
mg/l
• Cu less than 0.1 mg/l
• Conductivity is to be less
than 400μS/cm (at 25°C)
• Hardness is to be 7 Grains
or less
IMPORTANT: Ensure that
these limits are acceptable
for the other water-side
components in the system.
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
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 boiler area free
and clear of combustible
materials, gasoline, and
other 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 boiler shall not be
exposed to water leaks from
piping or components located
overhead. This includes
condensation dropping from
un-insulated cold water lines
overhead.
WARNING
Do not use this boiler if any
part has been under water.
Immediately call a qualied
service technician to inspect
the boiler and to replace any
part of the control system and
any gas control that has been
under water.
WARNING
Bacteria growth can develop
in domestic hot water tanks
and indirect water heaters
if the minimum water
temperature is not set high
enough to prevent its growth.
DANGER
The thermostatic mixing valve
installed with the DC Series
Combi Boiler is to protect
the users from scalding
from excessive hot water
temperatures at the faucets.
The thermostatic mixing
valves are user adjustable.
To achieve a higher domestic
hot water temperature, set
the valve to a higher number.
To achieve a lower domestic
hot water temperature set the
valve to a lower number.
USER’S INFORMATION MANUAL
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.
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DC/HC SERIES BOILERS
CONTROL
CAUTION
Before adjusting the control
settings, read the control
instructions carefully.
1
Power Indicator
2
Space Heating
3
Domestic Hot Water
4
Main Display
5
Fahrenheit and PSI
6
Celsius and Bar
7
Comfort / ECO / OFF - Indicator
8
Comfort / ECO / OFF - Indicator
9
Service Display
10
Flashes to indicate a fault
Table 1: Controller Indicators and Buttons
NOTE:
The control displays codes that include upper and lower case letter
A
Power - ON / OFF
B
Space Heating / DHW Toggle
C
Minus
D
Plus
E
Fahrenheit/Celsius
F
Domestic Hot Water Comfort / Eco
G
Service
H
Reset Button
and a combination with a period after the letter. Example: C, c., c are all valid
parameter codes. When adjusting settings, double check that you are in the
correct parameter.
USER – INSTALLER INTERFACE
Appliance ON/OFF
The boiler can be switched on and off with the On/Off button. When the boiler
is “ON”, the green LED above the On/Off button will be on. When the boiler is
on and there is no call for heat or DHW the displays are blank.
If the boiler is being powered up after a power outage, the boiler will return to
heating as it was when the power was removed from the boiler.
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
NOTE
The domestic hot water
thermostat is adjusted it 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 efcient operation,
this setting should be set
as low as practical for the
consumer’s needs.
PSI and Fahrenheit / Bar and Celsius
PSI and Fahrenheit are the default setting as shipped from the factory. To
change to Bar and Celsius simply press the to toggle Fahrenheit and Celsius.
Programing Mode
USER MENU
Adjusting the Space Heating Water Temperature
To enter the User Menu simply hold down the Space Heating /DHW Toggle
button for 2 seconds. The LED beside the will illuminate and the current
maximum heating system water temperature will be displayed in the 4 digit
display. To alter this value simply press the Plus + or the Minus - buttons.
Adjusting the Domestic Hot Water Temperature
Press the Space Heating /DHW Toggle
beside the will illuminate and the current tankless domestic hot water
temperature target is displayed in the Main Display. To alter this value simply
press the Plus
Saving the Changes
To exit from the User Menu and save the changes press the Reset
Pressing the On/Off button will also exit the User Menu but will NOT save the
changes.
or Minus - buttons.
+
button a second time and the LED
button.
USER’S INFORMATION MANUAL
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DC/HC SERIES BOILERS
TANKLESS DOMESTIC HOT
WATER MODES
DC SERIES BOILERS ONLY
Tankless Domestic Hot Water - Standard, Comfort and
ECO Comfort Modes
Standard Mode (both LEDs are off): The boiler’s heat exchanger will not
maintain its domestic hot water temperature between demands for hot water.
(This the most energy efcient mode but will result in the “Cold Water Sandwich
Effect”.) The boiler will respond to a call for domestic hot water as a priority over
the space heating demand. When the domestic hot water demand is satised the
boiler will return to the space heating load if the load is still calling.
Comfort Mode (the top LED is on): The boiler’s heat exchanger will maintain
the pre-programmed temperature set in parameter n. or as set for the Tankless
hot water temperature. (This is the least efcient mode but does offer the
most consistent hot water delivery temperatures). This temperature will be the
minimum temperature of the heat exchanger at all times unless the boiler is
heating a low temperature load.
ECO Comfort Mode (the bottom LED is on): 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 boilers heat exchanger is allowed
to cool. (This mode is the most practical of the three options).
To toggle between the 3 modes simply press the Domestic Hot Water Comfort /
Eco button.
Table of Programmable Parameters
PARAMETER DESCRIPTION DEFAULT RANGE / OPTIONS
USER SET UP
Boiler Supply Temperature 180°F (82°C) 86°F (30°C) to 194°F (90°C)
Tankless Domestic Hot Water
Temperature
Table 2: Programmable Parameters
120°F (49°C) 104°F (40°C) to 149°F (65°C)
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
OPERATING AND SERVICE
DISPLAY CODES
MAIN
DISPLAY
(blank) - The boiler is OFF. Press the On/Off button to turn
(blank) (blank) No Call for Heat - Standby
XXX 0 Boiler pump running – pump post purge
XXX 1 Boiler water temperature reached target – boiler pump is
XXX 2 Self-test – When power is applied to the boiler the
XXX 3 Fan Pre-purge , Inter-purge and Post-purge
XXX 4 Trial for Ignition and Flame Proving
XXX 5 Heating – Space Heating
XXX 6 Heating – DHW
XXX 7 Burner on for Comfort mode or Freeze Protection mode
Table 4: Operating Display and Service Display Codes.
SERVICE
DISPLAY
DESCRIPTION
on the boiler
energized, call for heat still present
controller enters a self diagnostic mode for 5 seconds
USER’S INFORMATION MANUAL
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DC/HC SERIES BOILERS
LIGHTING AND SHUTTING
DOWN THE BOILER
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
MAINTENANCE
Daily Maintenance
• Check the surrounding area – inspect for water leaks in the general area
around the boiler and boiler piping
• Check the system pressure. The heating system pressure should not exceed
25psi and not drop below 10psi in most applications. If the pressure is outside
this normal range or if the water pressure uctuates more than 2-3psi, contact
your qualied service technician for service.
• Check the area around the boiler and the air intake opening for obstructions
and chemical contaminates.
Monthly Maintenance
• Check all the Daily Maintenance items.
• For DC series boilers, 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 thermostatic mixing valve to a lower number, adjust the water
temperature with the boilers controller, or adjust the water temperature at the
hot water tank. If these adjustments are not correcting the issue, call your
qualied 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 qualied 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 qualied service technician for service.
WARNING
Annual Maintenance must
only be done by a qualied
service technician.
USER’S INFORMATION MANUAL
Annual Maintenance
The boiler must be inspected by your qualied service technician for the following:
• Inspect the ue gas exhaust and air intake connections. All connections
should be tight and leak free.
• Inspect ue gas exhaust piping, combustion air piping and terminations.
• Inspect the boilers interior and vacuum if required.
• Check for water, gas and condensate leaks in the boiler and around the boiler.
• Check the condensate trap and clean if required. Re-ll the trap and re-install
the trap hook.
• Check the water pressure, expansion tank and pumps.
• 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 ame. Should be a quick and quiet ignition across the full
burner.
• If required, clean the heat exchanger and the burner.
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DC/HC SERIES BOILERS
WARNING
Do not use automotive-type
ethylene or other types of
automotive glycol antifreeze,
or undiluted antifreeze of
any kind. This may result
in severe boiler damage. It
is the responsibility of the
Installer to ensure that glycol
solutions are formulated to
inhibit corrosion in hydronic
heating systems of mixed
materials. Improper mixtures
and chemical additives may
cause damage to ferrous and
non-ferrous components as
well as non-metallic, wetted
components, normally found
in hydronic systems. Ethylene
glycol is toxic, and may be
prohibited for use by codes
applicable to your installation
location. For environmental
and toxicity reasons, IBC
recommends only using nontoxic propylene glycol.
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,
testing must be performed more often. A “try lever test” must also be performed
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 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 not evidence of discharge, discontinue
use of equipment immediately and contact a licensed contractor or qualied
service personnel.
If the relief valve does not completely seal, and uid continues to leak from the
discharge pipe - perform the test again to try and ush any debris that may be
lodged in the valve. If repeated tries fail to stop the leakage, contact a licensed
contractor or qualied service personnel to replace the valve.
While performing a “try lever test”, a quantity of heat transfer uid will be
discharged from the piping system and the system pressure will drop. This uid
must be replaced. It is highly recommended that a system pressurization unit,
such as an Axiom Industries model MF200 be employed to rell and pressurize
your system. Capture the discharged 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, the boiler auto ll valve must be turned on in order to recharge the
lost uid.
NOTE
Installers should inquire of
local water purveyors as to
the suitability of their supply
for use in hydronic heating
systems.
If water quality is questionable,
a local water treatment expert
must be consulted for testing,
assessment and, if required,
treatment.
Alternatively, water or hydronic
uid of known quality can be
brought to the site.
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.
Domestic Hot Water System
Quality of the domestic cold water is very important to the longevity of the boiler.
The recommended pH of the domestic water is between 6.5 and 8.5. The internal
domestic water heat exchanger tubing and the ow sensor is subject to fouling if
exposed to hard water (over 7 grains of hardness) or has a TDS of 500mg/L or
higher. See Table 5.
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 7.5 pH 6.5 pH
Chloride 250 mg/L
Iron 0.3mg/L
Total Dissolved Solids 500mg/L
Total Hardness 7 grains
Table 5: Domestic Water Quality Guidelines
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USER’S INFORMATION MANUAL
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DC/HC SERIES BOILERS
PARTS DIAGRAMS
DC Series Modulating Boiler - Parts assembly
Diagram 1: Boiler assembly parts
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
Some parts are available in Kits.
Please visit www.ibcboiler.com
for more information.
USER’S INFORMATION MANUAL
Diagram 2: Boiler assembly parts list (refer to Diagram 6.1-1 on opposite page)
17
DC/HC SERIES BOILERS
HC Series Modulating Boiler - Parts assembly
Diagram 3: Boiler assembly parts
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
Some parts are available in Kits.
Please visit www.ibcboiler.com
for more information.
USER’S INFORMATION MANUAL
Diagram 4: Boiler assembly parts list (refer to Diagram 3 on opposite page)
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DC/HC SERIES BOILERS
SERVICE RECORD
DATE LICENSED CONTRACTOR DESCRIPTION OF WORK DONE
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
NOTES
USER’S INFORMATION MANUAL
21
DC/HC SERIES BOILERS
The following message is relevant to users in the USA:
IMPORTANT
This Boiler is equipped with a feature that saves energy by reducing the boiler water
temperature as the heating load decreases. This feature is equipped with an override
which is provided primarily to permit the use of an external energy management system
that serves the same function. THIS OVERRIDE MUST NOT BE USED UNLESS AT
LEAST ONE OF THE FOLLOWING CONDITIONS IS TRUE:
• An external energy management system is installed that reduces the boiler
water temperature as the heating load decreases.
• This boiler is not used for any space heating.
• This boiler is part of a modular or multiple boiler system having a total input
300,000 BTU/hr or greater.
of
• This boiler is equipped with a tankless coil (not applicable to IBC’s HC boilers).
US installers should contact IBC for any further information required.
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USER’S INFORMATION MANUAL
DC/HC SERIES BOILERS
REVISION HISTORY
R1 (JULY 2014) Initial release
R2 (SEPTEMBER 2014) Addition of the HC 13-50
R3 (AUGUST 2015) Address Update
R4 (OCTOBER 2015) Addition of the DC 20-125 and HC 20-125
USER’S INFORMATION MANUAL
23
IBC Technologies Inc.
8015 North Fraser Way
Burnaby, BC
Canada V5J 5M8
Tel: 604.877.0277
Fax: 604.877.0295
www.ibcboiler.com
120-184-A-R4
88534704
October 2015
© IBC Technologies Inc. 2015
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