Bosch Singular 4000 Bedienungsanleitung
User Manual
Gas Condensing Combi Boilers
Singular
Singular 4000 | Singular 5200
BTC 439003302 A / 03.2021
WARNING:
If the information in these instructions are not followed exactly, a fire or explo-
sion may result causing property damage, personal injury or death.
WARNING:
Do not store or use gasoline or other flammable vapors and liquids in the vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL GAS
—Do not try to light any appliance.
—Do not touch any electrical switch; do not use any phone in your building.
—Immediately call your gas supplier from a neighbor’s phone. Follow the gas
supplier’s instructions.
—If you cannot reach your gas supplier, call the fire department.
WARNING:
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, personal injury (exposure to hazardous materials)* or loss of
life. Refer to the user's information manual provided with this boiler. Installation
and service must be performed by a qualified installer, service agency or the gas
supplier who must read and follow the supplied instructions before installing,
servicing, or removing this boiler. This boiler contains materials that have been
identified as carcinogenic, or possibly carcinogenic, to humans.
This boiler must be installed in accordance with local, state, and federal codes.
In the absence of such requirements, then to the latest edition of the National
Fuel Gas Code, ANSI Z223.1./NFPA 54. In Canada, installation must be in
accordance with the requirements of CAN/CSA B149.1, Natural Gas and
Propane Installation Code.
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
Table of Contents
1 Key to Symbols and Safety Instructions 4
1.1 Key to Symbols 4
1.2 Safety 4
2 Front Panel 6
2.1 Digital Display and Icons 6
2.2 Buttons 6
3 Operating the Boiler 7
3.1 Turning the Boiler On or Off 7
3.2 Setting the Space Heating Temperature 7
3.3 Setting the DHW (Domestic Hot Water) Temperature 8
3.4 Viewing Basic Information 8
3.4.1 H0 mode 9
3.4.2 H1 mode 9
3.4.3 H2 mode 9
3.4.4 H3 mode 9
3.4.5 H4 mode 10
3.4.6 H5 mode 10
3.4.7 H6 mode 10
3.4.8 H7 mode 10
3.4.9 H8 mode 11
3.4.10 H9 mode 11
3.4.11 HA mode 11
3.4.12 HB mode 11
4 Inspection and Maintenance 12
4.1 Draining the Boiler 12
4.2 Cleaning the Cold Water Inlet Filter 14
4.3 Cleaning the Air Intake Filter 14
4.4 Protecting the Boiler from Freezing 15
4.5 Maintenance Schedules 15
4.5.1 Owner Maintenance 15
4.5.2 Service Technician Maintenance 15
5 Troubleshooting 17
5.1 Basic Problems 17
5.2 Error Codes 18
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
1 Key to Symbols and Safety Instructions
1.1 Key to Symbols
Warnings
Warnings in this document are identified by a
warning triangle printed against a grey background.
Keywords at the start of a warning indicate the type and seriousness
of the ensuing risk if measures to prevent the risk are not taken.
The following keywords are defined and can be used in this document:
DANGER indicates a hazardous situation which, if not avoided, will result
in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a hazardous situation which, if not avoided, could
result in minor to moderate injury.
NOTICE is used to address practices not related to personal injury.
Important information
This symbol indicates important information where
there is no risk to people or property.
1.2 Safety
Please read before proceeding
WARNING:FIRE,EXPLOSION
Vapors from flammable liquids can explode and/or catch fire
causing death or severe burns.
Keep flammable products far away from the boiler and store
them in approved containers. Keep the containers tightly
closed and out of the reach of children.
The boiler has a main burner flame that can come on at any
time and will ignite flammable vapors.
Vapors cannot be seen and are heavier than air. They can
travel long distances along the ground and can be carried
from other rooms to the boiler’s main burner flame by air
current.
WARNING:SCALDHAZARD
Water temperature over 125°F can cause severe burns or
death from scalding.
Children, the disabled and the elderly are at highest risk of
being scalded.
Test water before bathing or showering.
Temperature TimetoProduceSerious Burn
120 °F (48 °C) More than 5 minutes
125 °F (51 °C) 1.5 to 2 minutes
130 °F (54 °C) Approx. 30 seconds
135 °F (57 °C) Approx. 10 seconds
140 °F (60 °C) Less than 5 seconds
145 °F (62 °C) Less than 3 seconds
150 °F (65 °C) Approx. 1.5 seconds
155 °F (68 °C) Approx. 1 second
Table 1
WARNING:FIRE,EXPLOSION
Do not store combustibles, such as papers or laundry, near
the boiler or venting system.
Do not store or use gasoline or other flammable liquids near
this boiler.
Do not store or use compressed gases, such as hair sprays
or spray paints, near the boiler or venting system, including
the vent termination.
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
WARNING:HAZARDOUSVOLTAGE
Do not remove the front cover unless the power to the boiler
is turned off or disconnected.
Do not touch the internal components of the boiler or the
power cord with wet hands.
WARNING:FIRE,CARBONMONOXIDE
Do not operate the boiler with the front cover opened.
Do not operate the boiler without proper venting.
Do not place anything in or around the vent terminals that
could obstruct the air flow in or out of the boiler.
WARNING:FIRE,EXPLOSION
Have your installer or plumber show you the location of the
gas shut off valve and demonstrate how to close the valve. If
the boiler is damaged as a result of overheating, fire, flood,
or any other reason, close the manual shut off valve and do
not operate the boiler again until it has been inspected by a
qualified technician.
WARNING:FIRE,EXPLOSION
Should overheating occur or if the gas supply fails to shut
off, turn off the manual gas shut off valve.
WARNING:PERSONALINJURY,PROPERTY DAMAGE
Do not allow children to operate or have access to the boiler.
WARNING:IMPROPEROR DANGEROUSOPERATION
Immediately call a qualified service technician to inspect the
appliance and replace any part of the control system and/or
any gas control which has been immersed in water.
WARNING:
This product can expose you to chemicals including Lead
and Lead components, which are known to the State
of California to cause cancer and birth defects or other
reproductive harm. For more information go to www.
P65Warnings.ca.gov.
WARNING:PERSONALINJURY,PROPERTY DAMAGE
Do not operate the boiler if you suspect something might be
wrong with it.
CAUTION:INTENDEDUSE
Do not use the boiler for anything other than its intended
purpose, as described in this manual.
WARNING:IMPROPEROR DANGEROUSOPERATION
Do not use unapproved replacement or accessory parts.
When servicing the controls, label all wires prior to
disconnecting them to prevent wiring errors.
Do not attempt to repair or replace any part of the boiler,
unless it is specifically recommended in this manual. For all
other service, contact an authorized technician or licensed
professional. Improper adjustments, alterations, service, or
maintenance may lead to property damage, personal injury,
or death and will void your warranty.
NOTICE:BOILERDAMAGE
Do not turn on the boiler unless the water and gas supplies
are fully opened. Failure to do so may damage the boiler.
This boiler has been approved for use in the USA and Canada only.
Using the boiler in any other country will void the manufacturer's
warranty.
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
2 Front Panel
2.1 Digital Display and Icons
The digital display and icons on the front panel provide important information
required for the operation of the boiler. Refer to the table below for detailed
information.
Figure 1
A
B
C
D
E
F
G
H
I
Icon Description
ADigital display
Displays water temperature, error codes, etc.
BSpace heating mode
Indicates space heating mode operation.
CDHW mode
Indicates DHW mode operation.
DPressure
Indicates the pressure in the boiler.
ERPM
Indicates revolutions per minute (RPM).
FFreeze protection mode
Indicates freeze protection mode operation.
GOutdoor reset mode
Indicates ambient temperature sensor operation.
HCombustion
Indicates gas burner operation.
IError
Indicates error.
Table 2
2.2 Buttons
Using the buttons on the front panel, you can turn the boiler on or off, adjust the
water temperature, and change modes to monitor the operation status. Refer to the
table below for detailed information.
Figure 2
A
B
D
C
Icon Description
APower
Turns the boiler on or off.
BMode
Changes the mode.
CUP
Increases the temperature.
DDown
Decreases the temperature.
Table 3
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
3 Operating the Boiler
3.1 Turning the Boiler On or Off
To turn the Boiler on or off, press the button.
Figure 3
When the boiler is on, the water temperature which has been set recently will
appear on the digital display.
3.2 Setting the Space Heating Temperature
WARNING:SCALDHAZARD
If your household includes children, or elderly or disabled
individuals, consider using a lower temperature setting.
To set the space heating water temperature:
1. Press the MODE button until the icon turns on.
Figure 4
2. Press the or buttons until the desired temperature appears on the
digital display.
Figure 5
Temperaturerange Adjusting the water temperature
82–180°F (Fahrenheit mode) 2°F increments
27–82°C (Celsius mode) 1°C increments
Table 4
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
3.3 Setting the DHW (Domestic Hot Water) Temperature
WARNING:
Water above 120°F (50°C) can cause instant scalding,
severe burns, or death.
To adjust the water temperature:
1. Press the Mode button until the icon turns on.
Figure 6
2. Press the or buttons until the desired temperature appears on the
display.
Figure 7
Temperaturerange Adjusting the water temperature
82–180°F (Fahrenheit mode)
31–50°C (Celsius mode) 2°F increments
1°C increments (31–45°C) & 46, 48, 50°C
130°F, 140°F
55°C, 60°C 10°F or 5°C increments
Table 5
To change the temperature over 120°F, hold down button for 5
seconds to unlock.
3.4 Viewing Basic Information
To turn the boiler on, press the button.
Figure 8
To view information about the boiler, press the MODE and buttons for 5
seconds.
Figure 9
Press the MODE button to switch between the information types.
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
3.4.1 H0 mode
This is the mode for checking the previous error.
H0 and the previous error (example: A6) will be displayed repeatedly on
the screen.
Figure 10
3.4.2 H1 mode
This is the mode for checking the most recent error.
H1 and the most recent error (Example : A2) will be displayed repeatedly
on the screen.
Figure 11
3.4.3 H2 mode
This is the mode for checking the current error.
H2 and the current error (Example : A3) will be displayed repeatedly on
the screen.
Figure 12
3.4.4 H3 mode
This is the mode for checking the current pressure in the system.
H3 and the current pressure in the boiler (Example : 25) will be displayed
repeatedly on the screen.
The pressure unit is PSI.
Figure 13
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User Manual
Singular Combi Boiler - BTC 439003302 A (2021/03)
3.4.5 H4 mode
This is the mode for checking the current number of revolutions of the fan.
H4 and the current number of revolutions of the fan (Example : 3600) will
be displayed repeatedly on the screen.
The unit is rpm.
Figure 14
3.4.6 H5 mode
This is the mode for checking the output voltage of the fan.
H5 and the output voltage (Example : C5) will be displayed repeatedly on
the screen.
Figure 15
3.4.7 H6 mode
This is the mode for checking the current exhaust gas temperature.
H6 and the current exhaust gas temperature (example: 120) will be
displayed repeatedly on the screen.
The unit is °F.
Figure 16
3.4.8 H7 mode
This is the mode for checking the current hot water temperature.
H7 and the hot water temperature (example: 100) will be displayed
repeatedly on the screen.
The unit is °F.
Figure 17
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