Bosch Uni 5000F US 207, Uni 5000F US 256, Uni 5000F US 171, Uni 5000F CA 207, Uni 5000F CA 256 Operating Instructions Manual

6 720 648 033-00.1T

WAR N I N G :

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 vapors and liquids in the vicinity
of this or any other appliance.

– WHAT TO DO IF YOU SMELL GAS

V Do not try to light any appliance.

V Do not touch any electrical switch; do not

use any phone in your building.

V Immediately call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s
instructions.

V 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.

Low-temperature oil and gas-fired boiler

Bosch Uni 5000F US/CA
171/207/256

Operating Instructions

6 720 648 163- 2011/05 US/CA

C

2 | Contents

Contents

1 General safety instructions and explanation of

symbols 3

1.1 Explanation of symbols 3

1.2 Safety instructions 3

2 Product description 5

2.1 Intended use 5

2.2 Certification and testing mark 5

2.3 Disposal 5

2.4 Product description 5

3 Commissioning the heating system 6

3.1 Turning the heating system on 6

3.2 Checking the operating pressure, topping up
the boiler water and bleeding air from the
system 6

3.2.1 Checking the operating pressure 6

3.2.2 Topping up the boiler water and bleeding the
system 6

3.3 Starting up the system using the Aquastat 7

3.4 Turning the heating system off 7

3.5 Action in an emergency 7

3.6 Operating tips 8

3.7 Why is regular servicing important? 8

4 Troubleshooting 9

4.1 Identifying operating modes and resetting
faults 9

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General safety instructions and explanation of symbols | 3

1 General safety instructions and explanation of symbols

1.1 Explanation of symbols

Warnings are indicated by a warning

triangle and a grey background.

Signal words are used to indicate the level of risk if
counter measures are not taken.

• Caution indicates that minor damage to property may
occur.

• Warning indicates that minor personal injury or
severe damage to property may occur.

• Danger means that severe personal injury may occur.
Very serious cases may result in death.

Notes are identified in the text by this
symbol. They are separated by horizontal
lines above and below the text.

Notes contain important additional information.

Notes do not contain any warnings or information about
hazards or risks.

1.2 Safety instructions

If you smell gas

B Turn off the gas cock.

B Open windows and doors.

B Do not operate any electrical switches or equipment

such as telephones, power plugs and doorbells.

B Extinguish all open flames.

B Do not smoke.

B Do not use lighters of any kind.

B Warn all ooccupants of the building, but do not ring

doorbells.

B If you can actually hear gas escaping, leave the

building immediately. Prevent others from entering
and notify the police and fire department from
outside the building.

B From outside the building, call gas supplier and

approved heating contractor.

If you smell flue gas

B Switch off the boiler (Æ page 7).

B Open windows and doors.

B Inform an authorized heating contractor.

Installation

B Correct and proper installation and adjustment of the

burner and the controls are the fundamental
requirements for safe and economical operation of
the boiler.

B The boiler may only be installed or converted by an

approved heating contractor.

B Do not modify any parts that carry flue gas.

B The hot water tank may only be used for heating

domestic hot water.

B Never shut off safety valves!

Water must be able to escape from the safety valve for
the hot water system and piping when the water is
being heated.

Maintenance and servicing

Heating systems should be regularly maintained for the
following reasons:

Heating systems should be regularly maintained for the
following reasons:

• to maintain a high level of efficiency and to operate
the system economically (low fuel consumption),

6 720 648 163 (2011/05)

4 | General safety instructions and explanation of symbols

• to achieve a high level of operational reliability,

• to maintain the cleanest combustion.

B Recommendation for users: sign a maintenance and

servicing contract with an approved heating
contractor covering annual servicing and
maintenance.

B The flue system must be inspected once a year. Have

all parts that show any signs of damage from
corrosion or other causes replaced.

B The boiler must be serviced by qualified boiler service

company once a year. Servicing must include the
burner, the entire flue and combustion air system and
any air inlet/outlet vents. All parts that show any signs
of damage from corrosion or other causes must be
replaced.

B Servicing and repairs may only be carried out by a

trained heating contractor.

B Have any faults immediately corrected in order to

prevent damage to the system.

B The operator is responsible for the general and

environmental safety of the heating system.

B Use only genuine Bosch spare parts. Damage caused

by the use of parts not supplied by Bosch is not
covered by the Bosch warranty.

Combustion air

B Keep the combustion air free of corrosive substances

(e. g. halogenated hydrocarbons that contain chlorine
or fluorine compounds). In that way you will prevent
corrosion.

Instructing the operator

B The operator must read the information on how the

boiler works and have the heating system installer
explain how to operate it.

Danger by failing to consider your own safety in an
emergency such as a fire

B Never put yourself at risk. Your own safety must

always take the highest priority.

Dangers posed by explosive and flammable materials

B Any work on components that carry oil or gas may only

be carried out by a certified heating contractor.

B Do not use or store flammable materials or liquids

(paper, thinners, paints, etc.) near the boiler.

B Maintain a clearance of at least 16 inches (40 cm)

from the boiler.

Risk of poisoning. Insufficient ventilation may cause
dangerous flue gas leaks.

B Never close off or reduce the size of air inlet or outlet

vents.

B The boiler must not be operated until the obstruction

has been removed.

Risk of water damage

B Do not use the appliance if any part of it has been

under water.

B Call in a qualified customer service technician

immediately to check the appliance and replace any
controls that have been under water.

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