Before putting the boiler into operation read this manual carefully.
DANGER!
Improper installation, adjustment, alteration, service or maintenance can
cause injury, loss of life or property damage. Refer to this manual.
For assistance or additional information consult a qualified installer,
service agency or the gas supplier.
CAUTION!
The operating manual is part of the documentation that is delivered to the
installation's operator. Go through the information i n this manual with the
owner/operator and make sure that he or she is familiar with all the
necessary operating instructions.
NOTICE!
In the Commonwealth of Massachusetts this boiler must be installed by a
licensed Plumber or Gas Fitter.
Danger: If the information in these instructions 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
– Do not try to light any boiler.
– 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.
• Installation and service must be performed by a qualified installer,
service agency or the gas supplier.
Notice!
• This manual is available in the English and French language.
• This manual must be retained for future reference.
Installation instructions
Logamax plus
GB162-L.B. 80 kW
GB162-L.B. 100 kW
6720645916 (2014/10) US
Read carefully before carrying out installation and maintenance.
[1]BC10 basic controller receptacle
[2]Installation option for room controller, e.g. RC35
[3]Cover with user manual compartment
[4]BC10 basic controller, can be expanded e.g. by the RC35 room controller
[5]Connection box (low-voltage and 120 VAC connections)
[6]Fan harness and mains lead of the pump
[7]Condensate drain outlet
[8]Condensate collector
[9]Boiler front door
[10] Automatic air vent
[11] Retaining clips
[12] Air intake for the fan
[13] Gas pipe
[14] Flue gas pipe
[15] Door lock
[16] Flue gas sensor
[17] Flue measuring point
[18] Measuring point for air intake
[19] Flue gas connection
[20] Air intake connection
[21] Fan
[22] Gas valve
[23] Venturi
[24] Burner cover
[25] Flow temperature sensor
[26] Ionization electrode
[27] Sighting glass
[28] Glow igniter
[29] Safety temperature sensor
[30] Heat exchanger
[31] Pressure sensor
[32] Return temperature sensor
[33] Universal Burner Automatic Version 3 (UBA 3)
[34] Draw with function module integration options
[35] Cover shield
[36] Condensate trap
Pump group (scope of delivery)
[37] Isolating valve, blue (CH boiler return) with pump, drain cock, check valve and thermometer
[38] Manual gas shut off valve, yellow (GAS)
[39] Isolating valve, red (CH boiler flow) with drain cock, pressure gauge and thermometer
[40] Pressure gauge
[41] Isolating valve
[42] Thermometer (optional accessory)
[43] Drain valve
[44] Safety valve 30 psi (2 bar) (or 50 psi [3.45 bar] = optional)
The pump group also includes an insulation cover (see also pump group installation instructions).
Low loss header (single appliance only):
[45] Low loss header (not illustrated)
Signal words at the beginning of a warning are used to indicate the type
and seriousness of the ensuing risk if measures for minimizing damage
are not taken.
• NOTE indicates that damage to property may occur.
• CAUTION indicates possible minor to medium personal injury.
• WARNING indicates possible severe personal injury.
• DANGER indicates a potential for loss of life.
Important Information
Important information neither indicating personal injury
nor damage to property are marked with this symbol.
They are separated by lines above and below the text.
Additional symbols
SymbolExplanation
▶Sequence of steps
Cross-reference to other points in this document or to
A fire or explosion may result causing pr operty damage,
personal injury or death.
▶ If the information in these instructions is not followed
exactly,
DANGER:
if flammable gas explodes.
▶ Beware if you smell gas: there may be an explosion
hazard!
▶ Do not store or use gasoline or other flammable vapors and liquids in
the vicinity of this or any other boiler.
Page 6
2
Regulations and guidelines
WARNING:
Dangerous flue gas can escape if the air supply is
insufficient.
▶ Make sure that air vents are not reduced in size or
obstructed.
▶ The boiler may only be operated after the defect has
been remedied.
▶ Warn the user of the system of the defect verbally
and in writing.
WARNING:
Danger of fatal accident from explosive fumes.
▶ Only carry out work on gas pipes and fittings if you
are properly registered.
General warnings
The following instructions must be observed
• The boiler must only be used for its designated purpose, observing
the Installation Instructions.
• Only use the boiler in the combinations and with the accessories and
spares listed.
• Maintenance and repairs must only be carried out by trained
professionals.
• You are only permitted to operate the condensing gas boiler with the
combustion air/flue gas system that has been specifically designed
and approved for this type of boiler.
• Please note that local approval of the flue system and the condensate
connection to the public sewer system may be required.
• If boiler installation is provided as replacement heater, do not
connect new boiler venting to an existing vent system, if it is shared
with other appliances.
• The local building regulations stipulating the installation rules at the
time of installation.
• The local building regulations concerning the air intake and outlet
systems and the chimney connection.
• The regulations for the power supply connection.
• The technical rules laid down by the gas utility company concerning
the connection of the gas burner fitting to the local gas main.
• The instructions and standards concerning the safety equipment for
the water/space heating system.
• The Installation Instructions for building heating systems.
• The boiler must be located in an area where leakage of the tank or
connections will not result in damage to the area adjacent to the
boiler or to lo wer flo ors of t he stru cture. When su ch locations cannot
be avoided, it is recommended that a suitable drain pan, adequately
drained, be installed under the boiler. The pan must not restrict
combustion air flow.
• The boiler must be installed such that the gas ignition system
components are protected from water (dripping, spraying, rain etc.)
during boiler operation and service.
• Do not restrict or seal any air intake or outlet openings.
• If you find any defects, you must inform the owner of the system of
the defect and the associated hazard in writing.
• The boiler must not be installed on carpeting.
What to do if you smell gas:
• Do not try to light any boiler.
• 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.
2Regulations and guidelines
• The installation must conform to the requirements of the authority
having jurisdiction or, in the absence of such requirements, to the
National Fuel Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA
B149.1, Natural Gas and Propane Installation Code.
• Where required by the authority having jurisdiction, the installation
must conform to the Standard for Controls and Safety Devices for
Automatically Fired Boilers, ANSI/ASME CSD-1.
▶ Install CO detectors per local regulations. Boiler requires yearly
- with optional pressure relief valve50 psi (3.45 bar).
The hot water distribution system must comply with applicable codes
and regulations. When replacing an existing boiler, it is important to
check the condition of the entire hot wate r distribution system to ensure
safe operation.
2.1Massachusetts Installations Only
(a) For all side wall side horizontally vented gas fuelled equipment
installed in every dwelling, building or structure used in whole or in part
for residential purposes, including those owned or operated by the
Commonwealth and where the side wall exhaust vent termination is less
than 7 feet above finished grade in the area of the venting, including but
not limited to decks and porches, the following requirements shall be
satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of
installation of the side wall horizontal vented gas fueled equipment,
the installing plumber or gas fitter shall observe that a hard wired
carbon monoxide detector with an alarm and battery back-up is
installed on the floor level where the gas equipment is to be installed.
In addition, the installing plumber or gas fitter shall observe that a
battery operated or hard wired carbon monoxide detector with an
alarm is installed on each additional level of the dwelling, building or
structure served by the side wall horizontal vented gas fueled
equipment. It shall be the responsibility of the property owner to
secure the services of qualified licensed professionals for the
installation of hard wired carbon monoxide detectors
– In the event that the side wall horizontally vented gas fueled
equipment is installed in a crawl space or an attic, the hard wired
carbon monoxide detector with alarm and battery back-up may
be installed on the next adjacent floor level.
– In the event that the requirements of this subdivision can not be
met at the time of completion of installation, the owner shall have
a period of thirty (30) days to comply with the above
requirements; provided, however, that during said 30 day
period, a battery operated carbon monoxide detector with an
alarm shall be installed. alarm and battery back-up may be
installed on the next adjacent floor level.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon
monoxide detector as required in accordance with the above
provisions shall comply with NPA 720 and be ANSI/UL 2034 listed
and IAS certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently
mounted to the exterior of the building at a minimum height of 8 ft.
above grade directly in line with the exhaust vent terminal for the
horizontally vented gas fuelled heating appliance or equipment.
The sign shall read, in print size no less than 1-½" in size, GAS VENT
DIRECTLY BELOW. “KEEP CLEAR OF ALL OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the side wall
horizontally vented gas fuelled equipment shall not approve the
installation unless, upon inspections, the inspector observes carbon
monoxide detectors and signage installed in accordance with the
provisions of 248 CRM 5.08(2)(a)1 through 4.
(b) EXEMPTIONS: The following equipment is exempt from 248 CRM
5.08(2)(a)1 through 4:
The following equipment is exempt from 248 CRM 5.08(2)(a)1 through
4:
1. The equipment listed in Chapter 10 entitled “Equipment Not
Required To Be Vented” in the most correct edition of NFPA 54 as
adopted by the board: and
2. Product Approved side wall horizontally vented gas fueled
equipment installed in a room or structure separate from the
dwelling, building or structure used in whole or in part for residential
purposes.
(c) MANUFACTURERS REQUIREMENTS - GAS EQUIPMENT VENTING
SYSTEM REQUIRED.
When the manufacturer of Product Approved side wall horizontally
mounted gas equipment provides a venting system design or venting
system components with the equipment, the instructions provided by
the manufacturer for the installation of the equipment and venting shall
include:
1. Detailed instructions for the installation of the venting system or the
venting system components: and
2. A complete parts list for the venting system design or venting system.
(d) MANUFACTURERS REQUIREMENTS - GAS EQUIPMENT VENTING
SYSTEM NOT PROVIDED.
When the manufacturer of Product Approved side wall horizontally
vented gas fueled equipment does not provide the parts for the venting
of flue gases, but identifies “special venting systems”, the following
requirements shall be satisfied by the manufacturer:
1. The referenced “special venting systems” shall be included with the
appliance or equipment installation instructions: and
2. The “special venting systems” shall be Product Approved by the
Board, and the instructions for that system shall include a parts list
and detailed installation instructions.
(e) A copy of all instructions.
For all Product Approved side wall horizontally vented gas fueled
equipment, all venting instructions, all parts lists for venting
instructions, and/or venting design instructions shall remain with the
appliance or equipment at the completion of the installation.
General information
3
3General information
About these instructions
These Installation Instructions contain important information for the
safe and professional installation, start-up and maintenance of the boiler
with boiler input rating of 80 kW and 100 kW.
These Installation Instructions are intended for professional installers,
who have the necessary training and experience for working on heating
and gas systems.
Cascade installation
Special cascade units (accessories) have been developed to enable this
boiler to be installed in a cascade system. Every cascade unit includes an
installation frame, horizontal headers, connection pipes for the boiler,
main gas pipe and a vertical low loss header. Cascade units are available
for installing the boilers inline or back-to-back. These cascade units
make installing a cascade system easier and less labor intensive.
Please contact Buderus for further information about cascade systems.
Updating of documentation
The following technical documentation is available for the Logamax plus
GB162-L.B. 80 kW/100 kW:
• Installation instructions,
• User’s manual,
• Service manual.
Subject to technical modifications
Slight changes may be made without prior notice to the illustrations,
process steps and technical data as a result of our policy of continuous
improvement
The boiler was designed to heat water in a central heating system and
generating domestic hot water. It is suitable for connection to fully
pumped, sealed water systems only, with a maximum supply
temperature set point off 180 °F (82 °C).
The boiler can be installed either as a single system or as part of a
multiple system (cascade system).
This boiler may not be installed in places below 4,001 ft.
The quality of the system water is very important. Poor water quality can
damage heating systems due to scale formation and corrosion.
For further details, please see the accompanying “Water quality
requirements for Logamax plus GB162-L.B. 80kW/100 kW” manual.
CAUTION:
Risk of system damage due to unsuitable heating system
water.
▶ If oxygen-permeable pipes are used, e.g. for under
floor heating systems, the systems must be
separated from one another by plate heat
exchangers. Unsuitable heating system water
promotes sludge and corrosion formation. This can
result in heat exchanger malfunction and damage.
3.3Pump test
If the boiler has not been operational for approx. 2 days, the pump will
automatically run for 10 seconds every 24 hours. This pump test is first
carried out 24 hours after the main power has been connected to the
boiler.
3.4Freeze protection
The boiler has integrated freeze protection that switches the boiler ON
at a space heating (CH) water temperature of 45 °F (7 °C) and switches
it OFF at a CH flow temperature of 59 °F (15 °C).
This feature does not protect the central heating system from freezing. If
there is a risk of radiators or pipe sections freezing up, we recommend
setting the pump run-over time to 24 hours ( § 13.4. page 48)
3.5Tools, materials and further equipment
For the installation and maintenance of the boiler you will need the
standard tools for space heating, gas and water fitting. In addition, a
hand truck with a fastening belt is useful.
3.6Disposal
▶ Dispose of the boiler packaging in an environmentally sound manner.
▶ Dispose of components of the heating system (e. g. boiler or control
device), that must be replaced in an environmentally responsible
manner.
The required permanent clearances (closet) are:
in front:1" (25 mm)
right side:0
left side:0
above:6" (152 mm).
The position selected for installation MUST allow adequate space for
servicing in front of the boiler of at least 16.5" + 20.5" = 37" (940 mm).
Maintain an installation clearance from combustible construction from
hot water piping of at least 1" (25 mm).
Page 10
4
G
C
DFE
4.1” (103.5 mm)
38.58” (980 mm)
5.3” (135 mm)
1.4” (35 mm)
5.4” (138 mm)
6.4” (162 mm)
1.54” (39 mm)
5.1” (130 mm)
5.5” (140 mm)
5.1” (130 mm)
A
B
0020.5” (520 mm)
39.5” (1003 mm)
40,55” (1030 mm)
51.6” (1310 mm)
16” (406 mm)
G
D/F
E
A/B
6” (152 mm)
18.3” (465 mm)0.25” (6 mm)
H/J
G
HI
J
1.2” (30 mm)
50.4” (1280 mm)
24.8” (630 mm)
16.5" (420 mm)
20.5" (520 mm)
6720645916-03.1TD
Dimensions and connections
4.2With pump group
Fig. 3Dimensions and connections with pump group
[A](LA) = Flue gas connection; inside diameter 4" (100 mm)
[B](AA) = Air intake with pompadour; inside diameter 4" (100 mm)
[C](WB) = Wall Bracket (not shown)
[D](VK) = Supply; G1½" union nut with female thread
[E](GAS) = Gas connection to boiler; Rp1" female thread
[F](RK) = Return; G1½" union nut with female thread
[G](AKO) = Condensate outlet; Ø 32 mm (1¼")O/D
[H](PF) = Pump group supply; G1½" male thread, flat seal
[I]= Gas connection to pump group; 1" NPT female thread
[J](PR) = Pump group return; G1½" male thread, flat seal
The required permanent clearances (closet) are:
in front:1" (25 mm)
right side:0
left side:0
above:6" (152 mm).
The position selected for installation MUST allow adequate space for
servicing in front of the boiler of at least 16.5" + 20.5" = 37" (940 mm).
Maintain an installation clearance from combustible construction from
hot water piping of at least 1" (25 mm).
▶ When receiving the delivery, check if the packaging is intact.
▶ Check that all items are included in the delivery.
1
2
4
8
2
1
3
0
4
9
Fig. 4Items supplied with unit
Nr. PartsQty. Packaging
1Boiler with casing11 box
2Wall bracket1
3Condensate trap with hose1
4Technical documents set1
5Supply and return union nuts with sealing
rings
6Screws and plugs for wall bracket2
7Union nut for gas connection1
8DHW sensor1
9Pump group11 box
Table 3 Items supplied with GB162-L.B. 80 kW/100 kW
3
5
6
7
7746800103-01.1TD
1
12
7746800103-02.1TD
Fig. 5Additional accessories
[1]Low loss header (single installation only)
[2]AM10 modulating outdoor reset control
5.2Transporting the boiler
CAUTION: The boiler may be damaged when it is
improperly secured.
▶ Only transport the boiler using the right
transportation equipment, such as a hand truck with
a fastening belt or special equipment for
maneuvering steps.
▶ During transportation the boiler must be secured on
the transportation equipment to prevent it from
falling off.
▶ Protect all parts against impacts if they are to be
transported.
▶ Observe the transportation markings on the
packaging.
CAUTION: The unpacked boiler may be damaged when
not protected against contamination.
▶ Leave the protective covers on the connections.
▶ Cover the flue gas connections at the top of the boiler
with plastic film.
▶ Always lift and carry the boiler with 2 people as shown in fig. 6, or use
a hand truck or special equipment.
Additional required accessories (not in delivery content)
A single boiler must be installed with the Buderus low loss header (LLH)
to regulate the flow. The low loss header must be ordered separately.
The low loss header delivery comes also with the AM10 modulating
outdoor reset control.
Multiple boiler cascade installations can use the Buderus cascade frame
accessories. Please contact Buderus for further informations.
▶ When receiving the delivery, check if the packaging is intact.
▶ Check that all items are included in the delivery ( fig. 5).
CAUTION: Damage to the unit by lifting or carrying
incorrectly.
▶ Do not hold the boiler by the door covering the
control panel ( fig. 7).
Fig. 7Incorrect way of lifting and carrying the boiler
▶ When using oxygen-permeable pipes (plastic), e.g. for floor heating
systems, you must separate the system using secondary heat
exchangers.
6.3Installing the boiler
Observe the installation distances of the combustion air/flue gas
system.
▶ Before starting installation check that the carrying capacity of the
wall is sufficient for the boiler weight.
NOTICE
▶ To protect the connection orifice you must not
remove the styrofoam bottom panel.
▶ Do not lift the boiler by the door covering the control
panel ( chap. 5.2 "Transporting the boiler",
page 11).
▶ Protect the boiler and the combustion
air/flue gas orifice against pollution during
installation.
▶ Remove the packaging and dispose of it in an environmentally
manner.
▶ Measure the installation height ( chap. 4 "Dimensions and
connections", page 9).
▶ Mark both holes with the wall bracket ( fig. 8) using a spirit level.
▶ Install the wall bracket with 2 screws ( fig. 8).
6Installation
6.1Requirements for the installation room
DANGER:
▶ Install the heating system in a frost-free room.
▶ If the boiler is operated dependent on room air, the
installation room must have the required air vents.
Do not obstruct these vents. The air vents must
always be free.
▶ When installed in a room with thin walls or a thin
floor, resonating noise may occur. Install noise
reducing parts if required.
▶ Do not store any flammable materials or liquids in the
immediate vicinity of the boiler.
▶ Never use any chlorinated detergents or halogenated
hydrocarbons (e. g. in spray cans, solvents and
detergents, paints, adhesives).
▶ Do not allow too much dust to collect on the boiler.
6.2Requirements for the heating system
▶ Installing a dirt trap like a y-strainer and a desludging device is
required. This must be installed in the heating system in the
immediate vicinity of the boiler, in an easily accessible position
between the boiler and the lowest point in the return of the system.
▶ Clean the dirt trap at every annual service.
▶ Never use salt bedding type exchangers (ion exchangers) to soften
the water.
▶ The low loss header and boiler connection set must be installed
(supplied with the boiler).
A
B
C
D
6 720 646157-07.1TD
Fig. 8Installing the wall bracket
▶ With 2 people, lift the boiler by holding it by its back and by the
transport rail at its bottom and install it on the wall bracket ( fig. 6,
page 11).
▶ The boiler can be moved sideways to get the correct position.
▶ Level the boiler with the set screw and a spirit level ( fig. 9).
6 720 646157-08.1T
6 720 646157-09.1TD
1
2
3
4
5
6
7
6 720 646157-10.1TD
6 720 646157-11.1TD
1
Fig. 9Aligning the boiler with the set screw
▶ Remove the protective covers from the bottom of the boiler
( fig. 10).
Fig. 11 Pump group
[1]pressure relief valve
[2]supply water valve
[3]manual gas shutoff valve
[4]circulation pump
[5]gas inlet
[6]return water valve
[7]pump group cover
Installation
6
NOTICE
▶ If you do not use the included pump group, you have to
install a separate circulation pump under the boiler.
This pump must be selected so that the volume flow
through the boiler is sufficient to handle the maximum
boiler input rating ( § 6.4.5, page 15).
▶ Install the pump group on the boiler in accordance with the pump
group installation instructions.
A single boiler must be installed with the low loss header to regulate the
flow.
Fig. 10 Removing the covers - boiler bottom
▶ Install the low loss header [1].
NOTICE
▶ Some residual water from final testing may leak
away.
6.4Water and Gas connection
6.4.1General
The water and gas connections to the boiler are made using the pump
group ( fig. 4, page 11). This pump group includes the circulation
pump and a pressure relief valve.
▶ Avoid installing the boiler above radiation levels.
If the boiler is installed above radiation sections, a
low water cutoff shall be installed and wired to the
boiler. Follow local code or in case of use of a low
water cutoff, be aware to use an air vent, in order to
prevent the boiler from shutting down unnecessarily
6.4.2Connecting the pressure relief valve (PRV)
The pressure relief valve is a part of the supplied pump group ( fig. 11,
[1]). A listed ASME pressure relief valve supplied with the boiler must be
installed at the time of installation. No valve is to be placed between the
PRV and the boiler.
No reducing coupling or other restriction may be installed in the
discharge line. The discharge line must be within 12" (305 mm) with a
minimum of 4" (100 mm) above a drain and installed such that it allows
complete drainage of both the PRV and the line. The location of the PRV
must be readily accessible for servicing or replacement and be mounted
as close to the boiler as possible. To install the PRV, a suitable fitting
connected to an extension on a “T” fitting can be sweated to the hot
water line. Support all piping.
Maintain an installation clearance from combustible construction of at
least 1" (25 mm) from the hot water piping.
6.4.3Making the gas connection
DANGER:
▶ Only carry out work on gas lines if you are a qualified
▶ To prevent contamination in the heating system we
recommend you integrate a dirt filter ( fig. 13,
[10]) in the return pipe, near the boiler. In an old
system it is a requirement to install a dirt filter. Also
install shutoff valves to enable filter cleaning
immediately upstream and downstream of the dirt
filter (scale cartridge or y-strainer)
▶ Connect the supply pipe with a flat rubber seal installed to the Supply
connection ( fig. 13, [1]) making sure it is not under stress. Use a
supply pipe with a minimum diameter of 1½" (38 mm).
▶ Connect the return pipe with a flat rubber seal installed to the Return
connection ( fig. 13, [2]) making sure it is not under stress. Use a
return pipe with a minimum diameter of 1½" (38 mm).
6.4.5Installing the pump
Always use the supplied Buderus pump group and the low loss header
when installing a single boiler so correct flows are guaranteed. It is not
necessary to install a low loss header for cascade systems.
▶ Install the pump ( fig. 13, [8]) in the return circuit ( fig. 13,
[2]).
6.4.6Installing the condensate trap
WARNING:
Danger of fatal accident due to poisoning
▶ If the condensate trap is not filled with water, flue gas
can escape and put people's lives at risk.
▶ Connect the condensate trap [1] to the condensate outlet.
The condensate trap has a bayonet connector, insert and turn
¼ rotation clockwise to click into position.
Fig. 15 Installing the condensate trap
▶ Connect the condensate trap hose [3] and the rubber sleeve [2] to
the condensate trap [1].
▶ Fill the condensate trap (supplied with the boiler) with water
▶ The condensate must be drained from the boiler in
accordance with local, state or federal rules and
regulations.
NOTICE
▶ Use materials approved by the authority having
jurisdiction. In the absence of such authority, PVC
and CPVC pipe must comply with ASTM D1785,
F441 or D2665. Cement and primer must comply
with ASTM D2564 or F493. For Canada, use ULC
certified PVC or CPVC pipe, fittings and cement.
6.5.1Connecting the expansion vessel in a single-boiler system
CAUTION:
Damage to the installation due to faulty pressure relief
valve.
▶ The expansion vessel must be of sufficient capacity.
▶ Connect the expansion tank to the boiler return. If a check valve is
available: connect the expansion vessel to the CH-side of the check
valve in the return circuit [1].
Fig. 19 Connecting the expansion vessel in a single-boiler system
[1]Expansion vessel
[2]Gas supply
[3]Air gap < 1" (25.4 mm)
Fig. 17 Connecting the condensate trap
[1]Condensate trap
[2]Air gap > 1" (25.4 mm)
6.6Combustion Air and Ventilation Openings
Provisions for combustion and ventilation air must be made in
accordance with section 5.3, Air for Combustion and Ventilation, of the
National Flue Gas Code, ANSI Z223.1/NFPA 54, or Sections 7.2, 7.3 or
7.4 of CAN/CGA B149, Installation Codes, or applicable provisions of
the local building codes.
DANGER:
Fire danger due to flammable materials or liquids.
▶ Do not store flammable materials and liquids in the
immediate vicinity of the boiler.
WARNING:
Boiler Damage.
Fig. 18 Condensate drainage pipe
▶ Install the condensate drain pipe taking the following into account:
– An air gap of at least 1" (25.4 mm) must be maintained between
the boiler condensate trap hose and the condensate pipe work
( fig. 17 and fig. 18).
– If the condensate outlet of the boiler is lower than the drain, a
condensate pump must be used.
– The condensate produced by the boiler has a pH value between
3 and 4.
▶ Install a neutralization unit if required by the local code.
▶ Boiler must be clear and free from combustible
materials, gasoline and other flammable vapors and
liquids, and corrosive liquids and vapors.
Never use chlorine and hydrocarbon containing
chemicals (such as spray chemicals, solution and
cleaning agents, paints, glues etc.) in the vicinity of
the boiler
▶ Do not store and use these chemicals in the boiler
Boiler damage and operational failures!
Due to insufficient or improper ope nings for combustion
air and/or ventilation of the boiler room.
Provisions for combustion air and ventilation are always
required, regardless whether the combustion air is
taken from the outside (sealed combustion) or inside
(room air for combustion).
Insufficient ventilation of the boiler room can lead to
high air temperatures. This can result in boiler damage.
▶ Make sure that intake and exhaust openings are
6.7Flue gas adapter
CAUTION:
Risk of boiler damage due to excessive dust and airborne
debris levels.
▶ Do not operate the boiler when there is a lot of dust in
the boiler room, e.g. due to building work.
▶ An air filter must be fitted if the supply of combustion
air contains large quantities of dust (e.g. from unpaved roads and tracks or dusty workplaces such as
quarries, mines, etc.) or airborne seeds from plants.
sufficiently sized and no reduction or closure of
openings takes place.
▶ When the problem is not resolved, do not operate the
boiler.
CAUTION:
▶ Do not use lubricants to avoid degradation of the lip
rings.
▶ Please note these restrictions and its dangers to the
operator of the boiler.
▶ When installing PVC vent pipes remove the upper lip ring and insert
[1].
NOTICE
▶ When one expects contaminated combustion air
(near swimming pools, chemical cleaning operations
and hair salons), sealed combustion operation is
▶ In case of open venting, use basket [2] on the air intake.
▶ When installing parallel PP venting material remove upper lip ring and
insert [1] and use PVC/PP PolyPro adapter offered by your local vent
supplier.
recommended.
All Air form inside the Building (non sealed combustion)
The closet shall be provided with 2 permanent openings communicatin g
directly with an additional room(s). The total input of all gas utilization
equipment installed in the combined space shall be considered in
making this determination. Each ope ning shall have a minimum free area
of 12" per 1,000 btu/h of total input rating of all gas utilization
equipment in the confined space, but no less than 1.002". One opening
shall commence within 12" (305 mm) of the top, and one opening shall
commence within 12" (305 mm) of the bottom of the enclosure.
The minimum dimension of air openings shall be not less than 4"
(101.6 mm).
1. Where directly communicating with the outdoors, each opening shall
have a minimum free area of 12" per 4,000 Btu/hr of total input
rating of all equipment in the enclosure.
2. Where communicating with the outdoors through vertical ducts,
each opening shall have a minimum free area of 12" per 4,000
Btu/hr of total input rating of all equipment in the enclosure.
Fig. 20 Connecting the flue gas adapter (parallel)
▶ When installing concentric PP venting material remove upper lip ring
and insert ( fig. 20, [1]) and place air intake cap [1].
3. Where communicating with the outdoors through horizontal ducts,
each opening shall have a minimum free area of 12" per 2,000
Btu/hr of total input rating of all equipment in the enclosure.
4. Where ducts are used, they shall be of the same cross-sectional area
as the free area of the opening to which they connect.
All Air from Outdoor (sealed combustion)
The closet shall be provided with two permanent openings, one
commencing within 12" (305 mm) from the top, and one commencing
within 12" (305 mm) from the bottom of the enclosure. The openings
shall communicate directly, or by ducts, with the outdoors or spaces
(crawl or attic) that freely communicate with the outdoors. The minimum
dimension of air openings shall be no less than 4" (101.6 mm).
6.8Installation of the Exhaust and Air Intake system
NOTICE
▶ Consult local and state codes pertaining to special
building code and fire department requirements.
Adhere to national code requirements.
▶ Observe the listed maximum lengths of vent system,
which are boiler model dependent. The maximum
permissible lengths are listed in table 8, page 22.
Optional vent kits are:
1. Parallel or concentric, horizontal (with approved wall terminal) or
vertical
Fig. 22 Vent pipes
The termination shall be at least 4 ft. (1,220 mm) for the U.S. and 6 ft.
(1,830 mm) for Canada away from a gas utility meter, service regulator
or the like (for room air applications only).
The termination shall terminate at least 4 ft. (1,220 mm) below, 4 ft.
(1,220 mm) horizontally from, or 1 ft. (305 mm) above any door,
window, or gravity air inlet into any building.
Vent must be at least 12" (305 mm) above grade, anticipated snow line
or roof surface (Canada 18" (457 mm) minimum) ( fig. 23).
Vent termination must be at least 7 ft. (2,135 mm) above a public
walkway ( fig. 24).
Vent must be 3 ft. (915 mm) above any forced air intake within 10 ft.
(3,050 mm) ( fig. 24). Do not extend exposed vent pipe outside the
building beyond recommended distance. Condensate could freeze and
block vent pipe.Vent should terminate at least 3 ft. (915 mm) away from
adjacent walls, inside corners and 5 ft. (1,525 mm) below roof
overhang ( fig. 24). It is not recommended to terminate vent above
any door or window, condensate can freeze causing ice formations.
Do not use chimney as a raceway if another boiler or fireplace is vented
into or through chimney.
All PVC and CPVC vent pipes must be glued, except for the flue gas
adapter. Installed you can slide the pipe onto the adapter, properly
supported and the exhaust pipe must be pitched a minimum of a ¼"
(6.35 mm) per foot back to the boiler. This allows the condensate to
drain away.
All non-steel combustion air and vent pipe materials and fittings must
comply with the following and must be UL approved venting material:
ItemMaterialUnited StatesCanada
4" (100 mm)
Intake/combustion
air pipe and fitting
PVC schedule
ANSI/ASTM D1785 BH gas
40, 80
PVC-DWVANSI/ASTM D2665
CPVC schedule
ANSI/ASTM F441
40, 80
PP
M&G Duravent
PolyPro and
ANSI Cat IV,
approved
Polypropylene
Centrotherm
InnoFlue SW
PP-Flex
M&G Duravent
PolyPro Flex and
ANSI Cat IV,
approved
Polypropylene
venting
systems,
ULC
1)
S636
Class IIA -
PVC,
Class IIB -
CPVC,
Class IIC -
Polypro-
pylene
,
Centrotherm
InnoFlue SW Flex
4"/6" (100/150
mm) concentric
Intake/combustion
PP Bosch
Concentric
ANSI Cat IV,
approved
Polypropylene
air pipe and fitting
Pipe cement /
primer
PVCANSI/ASTM D2564
CPVCANSI/ASTM F493
Table 6 Approved venting air pipe material
1) For installations in Canada, field supplied plastic vent piping must comply with
CAN/CGA B149.1 (latest edition) and be certified to the Standard for Type BH
Gas Venting systems. ULC S636 Components of this listed system shall not be
interchanged with other vent systems or unlisted pipe/fittings. All plastic
components and specified primers and glues of certified vent systems must be
from a single manufacturer and not mixed with other system manufacturer's vent
system parts. The supplied vent connector and separate available wall
termination kits are certified as part of the GB162 Boiler.
Fig. 23 Vent and air pipe position (1) of a sealed combustion system
M&G Duravent PolyPro
concentric and
Centrotherm Innoflue SW
Vent / air intake
terminal(s)
CVK
M&G Duravent Order
No. 4PPS-VK (-TC) or
Centrotherm ICRT4679
concentric
4" (100 mm)
(PP)
M&G Duravent - PolyPro
Flex Chimney Cap
Centrotherm - Innoflue
M&G Duravent order No.
4PPS FCT or
Centrotherm ISCP04
SW Flex Chimney Cap
Wall terminals Flue System
(trade name)
4" (100 mm)PVC/parallel stainless
steel
4" (100 mm)PolyPro Twin pipe
termination (PP)
4" (100 mm)Parallel PVC to
Vent / air intake
terminal(s)
ANSI/ASTM D1785 or
Field Controls
M&G Duravent Order
No. 4PPS-HTP
IPEX no. CVK
ANSI/ASTM D1785
Table 7 Approved vent terminations and flue material
Roof terminals
4"/6" (100/150
mm)
Flue System
(trade name)
Concentric PP
M&G Duravent PolyPro
Vent / air intake
terminal(s)
Bosch Order No.
7738004825
concentric
90°-elbow with
inlet screen
90°-elbow with
inlet screen
PVC/stainless steelANSI/ASTM D1785 or
Z-Flex/Heat Fab
PPM&G Duravent PolyPro
or Centrotherm Innoflue
SW
Table 7 Approved vent terminations and flue material
NOTICE
▶ Use of cellular core PVC (ASTM F891), cellular core
CPVC, or Radel® (polyphenolsulfone) in venting
systems shall be prohibited.
▶ Covering non-metallic vent pipe and fittings with
thermal insulation shall be prohibited.
▶ A minimum clearance of 4 ft. (1,220 mm)
horizontally from and in no case above and below,
unless a 4 ft. (1,220 mm) horizontal distance is
maintained, from electric meters, gas meters,
regulators and relief equipment
Fig. 24 Vent and air pipe position (2) of a system with combustion air supply from the room (non-sealed)
[1]Height at Least 1ft (305 mm) above grade and snow line
[2]Exhaust terminal must be at least 3 ft. (915 mm) above forced air
inlet within 10 ft. (3,050 mm)
[3]Forced Air Inlet
[4]Gravity Air Inlet
Table 8 Friction Loss Equivalent in piping and fittings
See table 8 for the Friction Loss Equivalent in piping and fittings.
Example:
When you end up using 3 x 45 ° -elbows and the concentric roof terminal,
then the total venting length may not exceed 68 ft. (20.72 m).
3 × 45°-elbow = 3 x 4 ft. (1.22 m) =12 ft. (3.66 m)
concentric roof terminal 4"/6" =20 ft. (6.10 m).
Total friction loss equivalent =32 ft. (9.76 m)
Total venting length for this example is:
GB162-L.B. 80 kW/100kW = 100 ft. (30.48 m) - 32 ft. (9.76 m) =
68 ft. (20.72 m) each for the intake and exhaust piping.
NOTICE
▶ The minimum covering wall thickness is 1"
(25.4 mm). The maximum covering wall thickness is
16" (406 mm).
▶ For direct venting properly reassemble and reseal
the vent and air-intake systems.
CAUTION:
▶ Vent connectors serving appliances vented by
natural draft shall not be connected into any portion
of mechanical draft systems operating under
positive pressure.
At the time of removal of an existing boiler, the following steps shall be
followed with each appliance remaining connected to the common
venting system placed in operation, while the other appliances
remaining connected to the common venting system are not in
operation:
a) Seal any unused openings in the common venting system.
b) Visually inspect the venting system for proper size and horizontal
pitch and determine there is no restriction, leaka ge, corrosion and other
deficiencies which could cause unsafe condition.
c) Place in operation the appliance being inspected. Follow the lighting
instructions. Adjust thermostat so appliance will operate continuously.
d) Test for spillage at the draft hood relief opening after 5 minutes of
burner operation. Use the flame of a match or candle, or smoke from a
cigarette, cigar or pipe.
e) Any improper operation of the common venting system should be
corrected so the installation conforms with the National Fuel Gas Code,
ANSI Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural Gas and
Propane Installation Code.
When resizing any portion of the common venting system, the common
venting system should be resized to approach the minimum size as
determined using the appropriate tables in Part 11 of the National Fuel
Gas Code, ANSI Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural
Gas and Propane Installation Code.
▶ Improper venting of the GB162 boiler can result in
excessive levels of carbon monoxide which can
result in severe personal injury or death. The boiler
must be vented in accordance with the 'Venting of
Equipment' section of the latest edition of ANSI Z
223.1 / NFPA 54 Natural Fuel Gas Code and/or the
'Venting systems and air supply for appliances'
section of the latest version of CAN/CGA B149.1
Natural Gas and Propane Installation Code in Canada
and in accordance with all applicable local building
codes.
NOTICE
▶ To avoid moisture and frost build-up and to maintain
clearances to openings on adjacent homes, 45° and
90° elbows or tees may be attached to the end of the
vent termination pipe to direct exhaust plumes away
from the adjacent structure. The total allowable vent
length, maximum number of elbows and distance to
air intake restrictions must be adhered to.
Installation
6
6.9Multiple boiler vent terminal clearance
Vertical terminations:
The combustion air inlet pipe must terminate in a downward position
using 2 × 90 ° elbows. The combustion air inlet pipe shall terminate at
least 3 ft (914 mm). horizontally from the center line of the exhaust
vent, this is to prevent cross contamination of flue gases into the
combustion air stream.
Terminate all exhaust vents at the same height and all combustion air
inlets at the same height, while maintaining the minimum 36" (914 mm)
height clearance from the exhaust to the down turned 90° elbow and
combustion air inlet.
Exhaust vent termination edge shall be at least 24" (610 mm) from the
edge of the air inlet pipe of an adjacent heater. Exhaust vent
terminations shall be placed at a minimum of 12" (305 mm) center to
center ( fig. 33 and fig. 34).
Air intake terminations may be placed adjacent to each other.
The combustion air inlet is part of the direct vent system and not
classified as a forced air inlet.
Horizontal terminations:
Combustion air inlet elbow must terminate at least 12"(305 mm) below
exhaust elbow or outlet, but not exceed 15" (381 mm) maximum
separation ( fig. 34).
Horizontal termination shall not extend beyond 18" from the building
(based on minimum 12" (305 mm) required separation between intake
and exhaust). Exhaust vent vertical rise shall not extend beyond 39"
(991 mm) from building penetration to termination elbow ( fig. 34).
Condensate could freeze and block vent pipe.
Terminate all exhaust vents at the same height and all combustion air
inlets at the same height, while maintaining the minimum 12" (305 mm)
vertical height clearance from between exhaust and combustion air
inlet. Exhaust vent termination edge shall be at least 12" (305 mm)
laterally from the edge of the air inlet pipe of an adjacent heater.
The combustion air inlet is part of the direct vent system and not
classified as a forced air inlet.
Devices such as pumps, outdoor sensor and 3-way valve are all
connected to the external connection board.
The electrical connections to the boiler must be made in accordance
with all applicable local codes and the latest revision of the National
Electrical Code, ANSI/NFPA-70.
If installed in Canada, electrical connections should conform with CSA
C22.1 Code part 1.
7.1External connection board connections
WARNING:
Danger of fatal accident due to electric shock.
▶ 120 VAC-connections may be present on the
external connection board when power is supplied to
the boiler.
▶ Open the boiler door.
▶ Remove the screw to release the cover over the electrical
connections and pull the cover upwards ( fig. 35).
▶ Connect all components to the relevant terminals:
RC Terminal - Room Controller
▶ Connect a Room- or Cascade controller to the orange RC terminal
( fig. 37) ( § 7.1.4, page 26).
FA Terminal - Outdoor temperature sensor
If outdoor temperature-dependant control operation is used, an outdoor
temperature sensor must be connected.
▶ Connect the outdoor temperature sensor to the blue FA terminal
( fig. 37).
WA Terminal - Potential-free heat demand
With this connection the room temperature-based modulating function
of the boiler is not used. This has a negative effect on comfort and energy
consumption. The boiler will now only modulate up to the preset space
heating water temperature.
▶ Connect the potential-free heat demand contact (On/Off
thermostat) or relay panel end switch to the green WA terminal
( fig. 37).
The maximum allowed resistance of this circuit is 100 Ω.
NOTICE
▶ The RC and WA terminals cannot be used
simultaneously.
Fig. 36 Routing the cable
7.1.2Low voltage connections
WARNING:
due to electric shock.
▶ Make sure no power is supplied to the boiler when
making connections
Fig. 37 External connection board connections
no.abbr.colorcomponent
1RCorangeRoom controller RC and EMS bus
2FAblueOutdoor-temperature sensor
3WAgreenPotential free On/off thermostat
4FWgreyDHW temperature sensor
5EVredExternal switch contact, potential free,
e. g. for floor heating safety
6DWVgreenConnection for external 3-way valve
7PKgreenExternal heating pump 120 VAC (for use
with non Buderus pump group)
8PSgreyDHW tank pump 120 VAC
9PZlilacDHW recirculation pump 120 VAC
10NetzwhiteMain power connection 120 VAC
Table 9 External connection board connections
FW Terminal - DHW temperature sensor
▶ Connect the external DHW temperature sensor to the grey FW
terminal, using the harness enclosed with the DHW temperature
sensor.
NOTICE
▶ It is not possible to connect more than 1 DHW
temperature sensor in the boiler.
▶ Connect a DHW temperature sensor suitable for this
particular boiler.
EV Terminal - External switching contact
An external switch contact can be used, i.e. to safeguard a floor heating
system so that the heating water temperature will not become too high
etc.
When the external switch contact is opened, the boiler will be switched
off for heating operation and for domestic hot water operation.
The pump continues to run for the run-over time set on the boiler.
▶ Remove the cable from the EV terminal ( fig. 37).
▶ Connect the external switch contact to the red EV terminal
( fig. 37).
DWV Terminal - 3-way valve
▶ Do not use this connection.
7.1.3120 VAC connections
NOTICE
▶ Use the 120 VAC connections for specific hydraulic
60 Hz, max. permissible 5 A
[28] Mains switch
[29] 120 VAC function module
[30] Ground
IMPORTANT
The wires in this mains lead are colored
in accordance with the following code:
GREEN AND YELLOW - EARTH; BLUE NEUTRAL; BROWN - LIVE
As the colors of the wires in the mains
lead of the appliance may not
correspond with the colored markings
identifying the terminals in your
connector proceed as follows:
The wire colored green and yellow must
be connected to the terminal on the
blue
black
brown
green/yellow
blue
brown
green/yellow
connector marked with the letter E or
by the earth symbol or colored
green/yellow
green or green-and-yellow. The wire
colored brown must be connected to
the terminal marked with the letter L or
grey
gris
gris
blanco
lila
blanc
lilas
272829
26
6 720 646157-45.1N
white
lilac
colored red. The wire colored blue must
be connected to the terminal marked
with the letter N or colored black.
30
WARNING
THIS APPLIANCE MUST BE EARTHED
Ensure that your appliance is
connected correctly - if you are in any
doubt consult a qualified electrician.
For location of individual components,
see service section and the exploded
views in this manual.
The boiler is fitted with a control unit, the BC10 basic controller.
This controller can be used to control the heating system.
▶ Push on the control panel ( fig. 49) to get access to the BC10 basic
controller ( fig. 50).
Fig. 49 Opening the control panel
CAUTION:
▶ Limit the space heating water temperature to the
maximum flow temperature of the floor heating
circuit.
▶ A power interruption discontinues manual
operation. Frost damage may occur.
“Chimney sweep” button ( fig. 50, [3])
The “Chimney sweep” button is used to put the boiler into flue gas test,
service or manual operation mode. The BC10 maximum heating water
temperature setting applies.
• The flue gas test enables the boiler to be run in full-load operation
manually for a short period ( table 12, page 31).
• The service mode enables the boiler to be run in part-load operation
manually for a short period. Measurements and settings can be
carried out on the boiler ( table 13, page 31).
• The manual operation mode enables the boiler to be operated
manually for a longer period. Use this mode when the control system
has not been installed yet or is out of order ( table 14, page 32).
“Service” button ( fig. 50, [4])
The “Service” button is used to display the current space heating water
temperature, the current system pressure etc.
Service Tool connection ( fig. 50, [5])
For further information please contact Buderus.
LED “Burner operation” ( fig. 50, [6])
The LED “Burner operation” lights when the burner of the boiler is active
and is extinguished when the burner is switched OFF.
The LED “Burner operation” indicates the burner status.
Fig. 50 BC10 basic controller
[1]Main power switch
[2]“Reset” button
[3]“Chimney sweep” button
[4]“Service” button
[5]Service Tool Connector
[6]LED “Burner operation”
[7]LED “Central heat demand”
[8]Space heating water temperature knob
[9]Display
[10] DHW temperature knob
[11] LED “DHW demand ”
The BC10 basic controller has the following components:
“Main power switch” ( fig. 50, [1])
The main power switch is used to switch the boiler ON and OFF.
“Reset” button ( fig. 50, [2])
If a fault has occurred you may have to restart the boiler by pressing the
“Reset” button.
This is only required in the event of a “locking” fault. “Blocking” faults are
reset automatically as soon as their cause has been corrected.
The display shows [\/r/e| during the reset operation.
LED StatusExplanation
ON Burner
Boiler water is being heated.
operational
OFF Burner off The space heating water temperature has reached
the target value and there is no heat demand.
Table 10 Meanings of LED “Burner operation” indications
LED “Central heat demand” ( fig. 50, [7])
The LED “Central heat demand” lights when there is a heat demand and
is extinguished when the heat demand is no longer present.
Space heating water temperature knob ( fig. 50, [8])
The Space heating water temperature knob is used to set the upper
space heating water temperature limit. The unit is °F.
Display ( fig. 50, [9])
The appliance display values, display settings and display codes can be
read out from the display. If a fault occurs the display will immediately
show the accompanying fault code. The fault code flashes if a locking
fault has occurred.
DHW temperature knob ( fig. 50, [10])
The DHW temperature knob is used to select the required temperature
of the hot water in the hot water cylinder. The unit is °F ( table 20,
page 40).
LED “DHW demand” ( fig. 50, [11])
The LED “DHW status” lights when there is a DHW request and is
extinguished when the DHW demand is no longer present.
You can navigate through the menu structure of the boiler on the BC10
using the “Reset” button, the “Chimney sweep” button, the “Service
button” ( fig. 50, [ 2, 3 and 4]) and the display ( fig. 50, [ 9]).
Normal Operation menu
Step 1[\/7/5| Shows currently measured space heating water temperature in °F ( § 13.3, page 48).
Step 2Press the e button.
Step 3[p/2/2|| Shows currently measured system pressure in psi ( § 13.3, page 48).
Step 4Press the e button.
Step 5[-/h/\] Current display code. In this case: Operating phase: Boiler in heating mode ( § 13.5, page 49).
Step 6After 5 seconds the display returns to step 1, or
Step 7Press the e button.
Table 11 Normal operation
Flue Gas Test menu
Step 1[1/2/0| Shows currently measured space heating water temperature in °F ( § 13.3, page 48).
Step 2To activate the flue gas test:
Press and hold the d button for more than 2 but not longer than 5 seconds.
Step 3[1/2/0| The non-flashing dot in the right-hand bottom corner of the display shows the flue gas test has been activated:
• the boiler is in heating mode at a capacity of 100% for a maximum of 30 minutes,
• space heating water temperature is as set on the BC10 basic controller,
• DHW mode is not possible.
Step 4Press the e button.
Step 5[p/2/2| Shows currently measured system pressure in psi ( § 13.3, page 48).
Step 6Press the e button.
Step 7[-/a/\] Display code. Operating phase: The boiler is in flue gas test mode ( § 13.5, page 49).
Step 8Press the e button.
Step 9[1/2/0| Shows currently measured space heating water temperature in °F ( § 13.3, page 48).
Step 10After 30 minutes or after a power interruption the flue gas test ends automatically.
To end manually press and hold the d button for more than 2 seconds until the dot disappears.
Table 12 Flue gas test
The menu structure consists of 5 menus:
• Normal Operation menu, table 11
• Flue Gas Test menu, table 12
• Service Mode menu, table 13
• Manual Operation menu, table 14
• Settings menu, table 15.
Service Mode menu
Step 1[1/2/0| Shows currently measured space heating water temperature in °F ( § 13.3, page 48).
Step 2To activate service mode 1st step:
Press and hold the d button for more than 2 but not longer than 5 seconds.
Step 3[1/2/0| The non-flashing dot is shown in the right-hand bottom corner of the display shows the boiler is now in Flue gas test mode.
Step 4To activate service mode 2nd step:
Simultaneously press and hold the d+ e buttons for more than 2 seconds.
Step 5[l/-/-] Display shows the maximum capacity setting during heating mode in % ( § 13.4, page 48).
In this case: [l/-/-] = 100%. Service mode has been activated.
You can now adjust the boiler performance to partial load, i.e. to check the gas/air ratio or the ionization current.
Step 6Press and hold the c button until the display shows [l/3/6]. Display setting: with a 80-kW boiler and [l/3/0] with a 100-kW boiler.
Minimum capacity setting during heating mode in % ( § 13.4, page 48).
The boiler will reduce its performance to 36% or 30% respectively within a couple of seconds.
The space heating water temperature set on the BC10 basic controller (control panel) applies now.
Check the gas/air ratio or the ionization current and if necessary set the gas/air ratio according to § 9.9 or § 9.11.
Step 7Press the e button.
Step 8[f/\/5] This parameter shows the pump run-over time in minutes that starts when the heating mode has ended ( § 13.4, page 48).
Step 9Press the e button.
Step 10[c/\/1] This parameter indicates the DHW mode status setting ( § 13.4, page 48).
Step 11Press the e button.
Step 12[1/2/0| Shows currently measured space heating water temperature in °F ( § 13.3, page 48).
Step 13Press the e button.
Step 14[p/2/2] Shows currently measured system pressure in psi ( § 13.3, page 48).
Step 15Press the e button.
Step 16[-/a/\] Display code: Operating phase: The boiler is in service mode ( § 13.5, page 49).
Step 17After 30 minutes or after a power interruption the flue gas test ends automatically. To end manually press and hold the d button for more
than 2 seconds until the dot disappears.
Step 18The boiler input rating drops to the preset capacity ( table 15, page 32).
Table 13 Service mode
Manual Operation menu
Step 1[1/2/0| Shows currently measured space heating water temperature in °F ( § 13.3, page 48).
Step 2To activate manual operation: Press and hold the d button for more than 5 seconds.
Step 3[\/7/5} A flashing dot in the right-hand bottom corner of the display shows manual operation is active. This means that the boiler is
permanently in heating mode: Space heating water temperature is as set on the BC10 basic controller. The LED “Heating system status”
lights. DHW mode is possible during manual operation.
Step 4Press the e button.
Step 5[p/2/2} Shows currently measured system pressure in psi ( § 13.3, page 48).
Step 6Press the e button.
Step 7[-/h/\} Display code. Operating phase ( § 13.5, page 49). The boiler is in manual operation mode.
During manual operation the “Settings” menu (table 15 from step 2) can be used to temporarily change the target boiler performance.
NOTE: If the boiler output has been changed temporarily, this must be set again after ending manual operation, according to the “Settings”
menu ( table 15, page 32).
Step 8Press the e button.
Step 9[1/2/0} Shows currently measured space heating water temperature in °F ( § 13.3, page 48).
Step 10After a power interruption manual operation ends automatically.
To end manually press and hold the d button for more than 2 seconds until the dot disappears.
Table 14 Manual operation
Settings menu
Step 1[1/2/0| Shows currently measured space heating water temperature in °F ( § 13.3, page 48).
Step 2To open the “Settings” menu: Press and hold the d+ e buttons for more than 2 seconds.
Step 3[l/-/-| This shows the “Settings” menu is open. You can adjust the setting of this parameter.
Step 4[l/-/-| Target output. Adjust as follows, or go to step 5.
Lower: Decrease the modulation rate with the c button. The minimum setting for boilers with low BTU is [l/3/6| = 36% with an 80 kW
boiler and [l/3/0| = 30% with a 100 kW boiler. Higher: Increase the modulation rate with the d button. The maximum setting is [l/-/-| = 100%. This is equal to the factory setting.
Step 5Press the e button.
Step 6[f/\/5| Pump run-over time in minutes (starts when the heating mode has ended). Adjust as follows or go to step 7.
Lower: Decrease the time with the c button. The minimum setting is [f/\/0|= 0 minutes. The factory default setting is 5 minutes.
CAUTION! Do not set the post purge time to less than 5 minutes.
Higher: Increase the time with the d button. The maximum setting is [f/6/0||= 60 minutes or [f/1/d|= 24 hours.
Step 7Press the e button.
Step 8[c/\/1| DHW mode status setting. Adjust as follows or go to step 9.
DHW mode can be switched OFF or ON. This setting has priority over other DHW mode settings, such as those made on the room
thermostat. Set the DHW mode with the cor d buttons. [c/\/1| means “ON”, [c/\/0| means “OFF”.
NOTE: Setting [c/\/0| also switches OFF the hot water cylinder frost protection.
Step 9After 5 seconds or after a power interruption the settings menu ends automatically. To end manually press the ebutton.
Any adjustments that you have made have been confirmed.
There are several steps involved in starting up the boiler. Complete the commissioning record log book after carrying out all activities described in this
chapter ( § 15.1, page 56).
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING: If you do not follow these instructions
exactly, a fire or explosion may result causing
property damage, personal injury or loss of life.
This appliance does not have a pilot. It is equipped with an ignition device
A.
which automatically lights the burner. Do not try to light the burner by hand,
BEFORE OPERATING smell all around the appliance area for gas. Be sure to
B.
smell next to the floor because some gas is heavier than air and will settle on
the floor.
WHAT TO DO IF YOU SMELL GAS
•
Do not try to light any appliance.
•
Do not touch any electric switch; do not use any phone in your building.
•
Immediately call your gas supplier from a neighbor's phone. Follow the gas
supplier's instruction.
•
If you cannot reach your gas supplier, call the fire department.
Use only your hand to push in or turn the gas control knob. Never use tools.
C.
If the knob will not push in or turn by hand, don't try to repair it, call a qualified
service technician. Force or attempted repair may result in a fire or explosion.
Do not use this appliance if any parts have been under water. Immediately call a
D.
qualified service technician to inspect the appliance and to replace any part of
the control system and any gas control which has been under water.
1.STOP! read the safety information above on this label.
2.Turn off all electric power to the appliance.
3.Set the thermostat or other operating control to lowest setting.
4.This appliance is equipped with an ignition device which
5.Close main gas shut off valve.
6.Wait (5) minutes to clear out any gas. Then smell for gas. Including near the
7.Open main shut off valve.
8.Set the thermostat or other operation control to desired setting.
9.Turn on all electric power to the appliance.
10.If the appliance will not operate, follow the instruction "To Turn Off Gas To
1.Turn off all electric power to the appliance if service is to be performed.
2.Set the thermostat or other operating control to lowest setting.
3.Close main gas shut off valve.
Fig. 51 Safety sticker
OPERATING INSTRUCTIONS
automatically lights the burner. Do not try to light the burner by hand.
floor. If you smell gas, STOP! Follow "B" in the safety information above on
this label. If you don't smell gas, go to the next step.
Appliance" and call your service technician or gas supplier.
Prior to the initial start-up check that the gas flow pipe work is gas-tight;
this must be confirmed in the start-up report.
WARNING:
▶ The boiler and its manual gas shutoff valve must be
isolated from the gas supply piping system during
any pressure testing of that system, exceeding
0.5 psi (34.5 mbar). The maximum test pressure
allowed at the manual gas shutoff valve inlet is 0.5
psi (34.5 mbar).
▶ Cover endangered positions before leak testing.
▶ Do not spray the leak testing agent onto cables, plugs
or electrical connection lines. Do not allow it to drip
onto them either.
DANGER:
Leaks may be caused to pipes and screw connections
during commissioning and maintenance activities.
▶ Carry out a proper leak test.
▶ Only use approved leak detection agents for leak
detection.
▶ If 0.5 psi (34.45 mbar) or less, slowly open the gas valve by pushing
on the gas valve and turning it ¼ rotation in a counter-clockwise
direction ( fig. 52). The gas valve is open when it is in the vertical
position.
▶ Shut off the appliance from the power supply.
▶ Check the new conduit section up to and including its connection (i.e.
direct sealing location) to the gas fitting for leaks, using a foaming
product.The maximum test pressure allowed at the manual gas
shutoff valve inlet is 0.5 mbar (0.2" W.C.).
9.2Fill the heating system
To ensure a trouble-free operation of the boiler, read the accompanying
instructions about water quality, before filling the heating system.
NOTICE
▶ At initial start up, the boiler will start as soon as the
system pressure exceeds 15 psi (1.0 bar).
▶ If the system pressure falls below 3 psi (0.2 bar) the
boiler will stop and generate a fault code.
▶ Push and open the control panel cover.
▶ Turn the Space heating water temperature knob [8] and DHW
temperature knob [10] counterclockwise to the “0” position.
Fig. 53 BC10 basic controller
▶ Turn the vent key a quarter rotation to undo the boiler door lock
( fig. 54, detailed picture).Push the fastener down ( fig. 54,
step 2) and open the boiler door.
▶ Remove the insulation cover of the pump group ( fig. 54, step 4).
4
1
2
Fig. 52 Open the gas valve
[1]pressure relief valve
[2]supply water valve
[3]pump
[4]manual gas shutoff valve
[5]return water valve
3
5
6720645916-49.1N
Fig. 54 Opening the boiler door
To purge the boiler, every radiator in the heating system must have a
purge facility. In some situations it may even be necessary to provide
extra purging facilities at certain locations. The boiler itself has an
automatic air vent.
▶ Loosen the cap of the automatic air vent ( fig. 55) by turning
¼ rotation counterclockwise.
Fig. 55 Opening the automatic air vent
▶ Open the heating supply and return isolating valves on the pump
group ( fig. 56). The open position is parallel to the pipe.
▶ Fill the heating system to a pressure of about 20 psi (1.5 bar)
The pressure in the heating system, which is measured directly at the
boiler, must be at least equal to the required pre-pressure of the
expansion vessel plus 7 psi (0.5 bar). This minimum pressure must not
be less than 12 psi (0.8 bar) (if the heating system is cold). The
maximum pressure in the heating system, measured directly at the
boiler, must not exceed 30 psi (2.6 bar) or 50 psi (3.5 bar) when the
optional 50 psi (3.5 bar) pressure relief valve is used.
▶ Purge the heating system via the air vents on the heating bodies.
Start at the lowest floor of the premises and then work your way up
from floor to floor.
9.3Fill the condensate trap with water
▶ Fill the condensate trap with water ( fig. 58). For disconnecting
the condensate trap ( § 12.3.5, page 46).
Fig. 58 Filling the condensate trap with water
WARNING:
Danger of fatal accident due to poisoning.
▶ If the condensate trap is not filled with water, flue gas
can escape and put people's lives at risk.
9.4Bleed the gas supply valve
Fig. 56 Opening the isolating valves (here: open position)
▶ Read the pressure (PSI) from the pressure gauge on the pump group
▶ Open the screw plug on the testing nipple of the gas supply pressure
and for purging [1] by 2 turns and install a hose.
Fig. 60 Bleeding the gas flow pipe
▶ Slowly open the gas valve by pushing on the gas valve and turning it
counterclockwise through ¼ rotation ( fig. 61). The gas valve is
open when it is in the vertical position.
9.6Checking the appliance configuration
NOTICE
The burner must only be put into use with the correct
orifice ( table 16).
▶ Consult the relevant gas utility company for the type
of gas supply.
▶ Check that the actual gas supply is in accordance
with the type of gas supply specified on the gas
classification label ( fig. 62).
Fig. 62 Checking the gas classification label
Fig. 61 Opening the gas valve
▶ Purge the gas supply into a well ventilated area.
▶ Close the gas shutoff valve when no more air is present ( fig. 59).
▶ Remove the hose and tighten the screw plug on the testing nipple
again.
NOTICE
▶ Test the tightness of the measuring nipple(s) used.
9.5Check the air/flue gas connection
Check the following points:
• Is the prescribed flue gas system used ( § 6.8, page 18)?
• Have the configuration instructions from the relevant flue gas system
installation instructions been observed?
Gas orifice
Boiler
GB162-L.B.
80kW/ 100kW
Type of gas
supply
Altitude in ft. (m)
Natural gas4,001-10,200
(1,220-3,111)
LPG4,001-8,000
(1,220-2,625)
LPG8,001-10,200
(2,625-3,111)
diameter in
inch (mm)
0.370
(9.40)
0.185
(4.70)
0.197
(5.00)
Table 16 Gas orifice diameter
9.7Measure the gas inlet pressure (working pressure)
▶ Open at least 2 radiator valves, if present. Do not switch ON the
boiler.
▶ Push on the control panel to open it.
▶ Switch OFF the power supply to the appliance.
▶ Close the gas valve in a clockwise direction ( fig. 63).
9.8Carry out a leakage test in operating conditions
WARNING:
Leaks may be caused to pipes and screw connections
during commissioning and maintenance activities.
▶ Carry out a proper leak test.
▶ Only use approved leak detection agents for leak
detection.
▶ Press and hold the “Chimney sweep” d button ( fig. 65, [3])
(approx. 2 seconds), until the dot in the right-hand bottom corner of
the display ( fig. 65, [9]) appears ( table 12, page 31).
▶ After the LED “Burner operation” ( fig. 65, [6]) has lit up wait for
1 minute until the boiler is burning at full load.
▶ Use a foaming product to check all sealing locations in the total gas
circuit of the burner while the burner is active.
▶ Press the “Chimney sweep”
d button ( fig. 65, [3]) to clear the
reading ( table 12, page 31).
9.9Check and adjust the flue gases CO2 emissions
CAUTION:
Take adequate time to properly measure the CO
▶ Changes will only be measurable after about
1 minute.
▶ Let the CO
value stabilize for about 30 seconds
2
before reading and/or readjusting.
values.
2
▶ Press and hold the d button ( fig. 69, [3]) (approx. 2 seconds),
until the dot in the right-hand bottom corner of the display
( fig. 69, [9]) appears ( table 12, page 31).
▶ After the “LED Burner operation” ( fig. 69, [6]) has lit wait for
1 minute until the boiler is burning at full load.
▶ Measure in the flue gas measuring port, with closed boiler door, the
CO
percentage. The value has to be 9.3% ± 0.2%.
2
▶ If necessary: open the boiler door and adjust the CO
percentage to
2
9.3% by means of the adjustment screw on the gas valve with the red
sleeve ( fig. 67) and close boiler door again. Note the set value in
table 27 on page 56.
If the CO2 percentage is not adjustable above 9% the problem can be:
• The gas pressure is to low ( § 9.7, page 36).
•CO
analyzer set incorrectly. Set CO2 analyzer on natural gas.
2
• Very low calorific gas. No solution, accept lower CO
percentage.
2
▶ Open at least 2 radiator valves, if present. Do not switch ON the
boiler.
▶ Push on the control panel to open it.
▶ Switch OFF the appliance by pressing the main switch of the BC10
basic controller ( fig. 65, [1]).
▶ Remove the cover from the flue gas measuring point ( fig. 66, [1]).
▶ Connect the flue gas analyzer to the left-hand measuring point, insert
it roughly 2" ( fig. 66).
Fig. 66 Measuring the flue gases CO emissions
▶ Switch ON the appliance by pressing the main switch of the BC10
basic controller.
6720645916-64.1N
Fig. 67 Adjusting flue gases CO2 emissions (at full load)
NOTICE
▶ The adjustment screw has no limit stop, there for it is
not defined, in advance, that turning left or right will
give a higher or lower value.
▶ Simultaneously press and hold the
d+ e buttons for more than
2 seconds, to activate service mode for partial load setting.
▶Press and hold the
c button until the display shows:
– [l/3/6| with a 80 kW boiler or
– [l/3/0| with a 100 kW boiler.
▶ After the load is adjusted to partial load, wait for 1 minute until the
boiler burns at partial load.
▶ Measure in the flue gas measuring port the CO
percentage. The
2
value has to be 1 to 1.5% lower than the measured value at full load.
E.g. full load measured value = 9.3:
9.3 - 1 = 8.3 and 9.3 - 1.5 = 7.8
So when the CO
percentage at full load is 9.3%, the partial load CO2
2
percentage value has to be between 8.3% and 7.8%.
If necessary:
▶ Adjust the CO
percentage to the calculated value, by means of the
2
air/gas ratio adjustment screw [1]. The adjustment screw is located
behind the screw plug.
▶ Open the screw plug.
▶ Turn adjustment screw to the left for a lower CO
▶ If the result is not as it should be ( § 9.9, page 38) or check the
ionization electrode ( § 12.3.4, page 45).
▶ Press and hold the “Chimney sweep”
d button ( fig. 69, [3])
(approx. 2 seconds), until the dot in the right-hand bottom corner of
the display ( fig. 69, [9]) appears ( table 12, page 31).
▶ Switch OFF the appliance by pressing the main switch of the BC10
basic controller ( fig. 69, [1]).
▶ Remove the multi meter and reconnect the monitoring cable.
▶ Switch ON the appliance by pressing the main switch of the BC10
basic controller ( fig. 69, [1]).
▶ Check that the boiler performance is still at the required value
( table 13, page 31).
9.12Test the Ignition Safety shut off device
▶ Switch OFF the appliance by pressing the main switch of the BC10
basic controller ( fig. 69, [1]).
▶ Disconnect the plug and socket connection of the monitoring cable.
▶ Switch ON the appliance by pressing the main switch of the BC10
2 seconds), until the display shows the decimal point.
▶ Check if the boiler does 1 start-up attempt and 3 restart attempts.
After each start-up attempt the boiler will signal a start-up failure.
A “6A” code can be seen in the display.
After the last start-up attempt, the boiler will lock out. The “6A” code is
blinking in the display.
▶ Connect the plug and socket connection of the monitoring cable.
▶ Press the “Reset” button.
▶ Check if the boiler starts-up.
▶ Press the “Chimney Sweep”
d button return to normal operating
conditions.
9.13Boiler settings
9.13.1 Set the heating capacity
▶ Set the required heating capacity on the BC10 according to the
“Settings” menu. See table 18, when making these settings.
Rated heating capacity (±5%), based on natural gas
Table 18 Heating capacity (as a percentage) low BTU (4,001-
10,200 ft.)
9.13.2 Set the space heating water temperature
▶ Set the upper space heating water temperature limit for heating
mode with the “space heating water temperature” knob ( fig. 72,
[8]) ( table 19). This limitation does not apply to DHW
preparation.
(sea level)
Knob
positionExplanation
0No supply to appliance (e.g. only DHW mode)
86-190The temperature (in °F) set on the BC10 cannot be
changed with a room controller. The supply temperature
does not rise above this set temperature. (maximum
supply temperature set point 180 °F (82 °C)).
AutThe temperature is determined automatically on the basis
of the heating curve. If no room controller is connected,
the maximum supply temperature is 180 °F (82 °C).
Table 19 Setting of the “space heating water temperature”
1098
110
100
90
120
130
140
130
110
90
150
170
190
11
1
123456
Fig. 72 BC10 basic controller
9.13.3 Set the pump run-over time
▶ Set the pump run-over time according to the “Settings” menu
( table 15, page 32).
If the heating system is room temperature controlled, and not controlled
parts of the heating system risk freeze damage (e.g. radiators in the
garage), set the pump run-over time to 24 hours.
9.13.4 Switch DHW mode ON/OFF
▶ Set the DHW mode according to the “Settings” menu ( table 15,
page 32).
When DHW-mode is switched OFF ([c/\/0|), the freeze protection for the
hot water cylinder (if present) is switched OFF.
9.13.5 Set the DHW temperature
▶ Set the DHW temperature knob ( fig. 72, [10]) to the required
temperature of the hot water in the hot water cylinder ( table 20).
Knob
positionExplanation
0DHW mode is OFF (only heating mode)
ECOEconomy mode. The DHW will only be reheated to 140 °F
(60 °C), if the temperature has significantly fallen. This
reduces the number of burner starts and saves energy.
As a result the water may be a bit colder initially.
86-140The temperature set on the BC10 is a temperature that
cannot be changed using a RC thermostat.
AutThe temperature is set on the thermostat (e. g. RC35).
If no thermostat is connected, the maximum DHW
temperature is 140 °F (60 °C).
9.14.1 Close the boiler door and the control panel
▶ Close the boiler door ( fig. 73) and lock the fastener by turning the
vent screw through ¼ rotation in a clockwise direction.
▶ Push on the control panel to close it.
Fig. 73 Closing the boiler door
9.14.2 Hand over
▶ Hand over all relevant documentation to the end user and explain
his/her responsibilities under the relevant national and regional
regulations.
▶ Explain and demonstrate the start-up and shut down procedures.
▶ Close the main gas supply or the gas valve ( fig. 74).
Fig. 74 Closing the gas valve
10.2Shutting down the heating system if there is a risk of
freezing (interruption of use)
If conditions are such that the heating system has to be shut down for a
long period while there is a risk of freezing, the water must be drained
from the heating system.
▶ Push on the control panel to open it.
▶ Switch off OFF appliance by pressing the main switch of the BC10
( fig. 72, [1]).
▶ Close the main gas supply or the gas valve ( fig. 74).
▶ Drain the heating water at the lowest point of the heating system,
using the drain cock or the heating body ( fig. 75). The (automatic)
air vent at the highest point of the heating system/radiator must be
open.
10Shutting down the system
CAUTION:
The heating system may freeze if it is not operational in
times of freezing.
▶ Protect the heating system against freezing if there is
a danger of frost affecting the system. Drain the
heating system water from the lowest point of the
heating system. The vent screw at the highest point
of the heating system must then be open.
10.1Shut down the appliance using the basic controller
Shut down your appliance by means of the Logamatic BC10 basic
controller. When the system is shut down, the burner is automatically
switched off.
Further information about the use of the BC10 basic controller is
provided in chap. 8 "Operation", page 30.
▶ Push on the control panel to open it.
▶ Switch OFF the appliance by pressing the main switch of the BC10
( fig. 72, [1]).
Fig. 75 Draining the heating system (example)
10.3Shutting down the heating system in the event of an
emergency
You must immediately close the main shutoff valve or gas shutoff valve
and disconnect the power from the appliance.
Offer your customer an annual inspection and maintenance contract.
The activities to be included in an annual inspection and maintenance
contract can be found in the inspec tion ( § 15.2, page 57) and service
reports ( § 15.3, page 57).
WARNING:
Do not use this boiler if any part has been under water.
▶ Immediately call a qualified service technician to
inspect the boiler and to replace any part of the
control system and any gas control which has been
under water.
CAUTION:
Insufficient or improper cleaning and maintenance can
cause damage to the installation.
▶ Inspect and clean the appliance once a year.
▶ Carry out maintenance as required. Immediately
remedy faults. This will avoid further damage to the
system!
▶ Close the isolating valves [2].
Fig. 76 Closing the valves (here: in closed position)
▶ Open the boiler door:
– Turn the vent key through a quarter rotation to undo the boiler
door lock ( fig. 77, step 1).
– Push the fastener down ( fig. 77, step 2) and open the boiler
door.
NOTICE
▶ If the boiler door cannot be opened completely,
remove it ( § 12.2, page 43).
CAUTION:
Risk of electric shock.
▶ Before opening the appliance:
▶ disconnect the appliance from the power supply
using the appliance emergency OFF button or
disconnect the relevant circuit breaker of the house
from the power grid.
▶ Secure the appliance against accidental restarting.
▶ Periodically examine the venting systems and cleaning of the screens
in the vent terminal.
▶ Also periodically inspect the low water cutoffs, including flushing of
float types and clean the condensate collections and disposal
system.
11.1Prepare the appliance for inspection
INSTRUCTION FOR THE INSTALLER
▶ If gas pipes have to be disconnected from the gas
burner fitting, the burner cover must only be opened
by a specialized professional.
▶ Switch OFF the appliance by pressing the main switch of the BC10.
▶ Close the gas valve [1].
Fig. 77 Opening the boiler door
11.2Carry out a visual check for general signs of
corrosion
▶ Check all gas and water-bearing pipes for signs of corrosion and for
leaks.
▶ Replace any pipes that are corroded.
▶ Carry out a visual inspection of the burner, heat exchanger,
condensate trap, automatic air vent and all fittings in the boiler.
11.3Gas valve leakage test
▶ Check the internal tightness of the gas fitting on the input side (with
the boiler switched OFF) at a test pressure of 7.0" W.C. (17.4 mbar)
for natural gas and 8.0" W.C. (19.9 mbar) for LPG.
▶ Check that the appliance is switched OFF.
▶ Open the screw plug on the testing nipple for the gas connection by
▶ Connect the pressure gauge tube to the testing nipple ( fig. 78,
6720645916-77.1N
2
1
2
6720645916-75.1N
[2]). The pressure drop allowed after 1 minute is max. 3.8" W.C.
(10 mbar).
▶ If the pressure drop is higher, check all sealing locations of the gas
fitting for leaks using a foaming product. Repeat the pressure test if
no leaks are found. Replace the gas fitting if the pressure drop is
higher than 3.8" W.C. (10 mbar) per minute again. See § 12.3.2
"Remove the burner cover with the fan and the gas valve", page 44
for instructions on how to remove.
Fig. 78 Checking the gas fitting for internal tightness
11.4Measure the ionization current
( § 9.11, page 39).
Maintenance
12
12Maintenance
CAUTION:
Risk of electric shock.
▶ Before opening the appliance: disconnect the
appliance from the power supply using the appliance
emergency OFF button or disconnect the relevant
circuit breaker of the house from the power grid.
▶ Secure the appliance against accidental restarting.
INSTRUCTION FOR THE INSTALLER
▶ Record the activities in the service report ( § 15.3,
page 57).
NOTICE
▶ There is no need to lubricate the combustion motor
as it is permanently lubricated.
12.1Prepare the heating system for maintenance
INSTRUCTION FOR THE INSTALLER
▶ If gas pipes have to be disconnected from the gas
burner fitting, the burner cover must only be opened
by a specialized professional.
▶ Switch OFF the appliance by pressing the main switch of the BC10.
▶ Close the gas valve [1].
▶ Close the isolating valves [2].
11.5Measure the gas inlet pressure (working pressure)
( § 9.7, page 36).
11.6Check and adjust the flue gas CO2 emissions
( § 9.9, page 38).
11.7Carry out a leakage test in operating conditions
( § 9.8, page 38).
11.8Measure the flue gases CO2 emissions
( § 9.9, page 38).
11.9Fill the heating system
To ensure a trouble free operation of your boiler check the pH-value
every year and correct it, if necessary. See accompanying manual about
water quality for more information ( § 9.2, page 34).
11.10 Check the air/flue gas connection
( § 9.5, page 36).
Fig. 79 Closing the valves (here: in closed position)
12.2Remove the boiler door
▶ Unscrew the control panel from the boiler door and hang it on the
boiler frame ( § 13.1, page 48).
▶ Unscrew the bolt from left-hand top hinge of the boiler door and
remove it together with the washer( fig. 80).
▶ Slightly lift the door and pull it from the hinge.
▶ Put the door upright in a safe position.
NOTICE
▶ The cover over the electrical connections does not
▶ Remove the burner cover with the gas/air unit ( fig. 85).
Fig. 85 Removing the burner cover with the gas/air unit
12.3.3 Remove the burner and the burner seal
▶ Remove the burner seal [1] and replace it if necessary.
▶ Remove the burner plate [2] and clean it on all sides using
compressed air or a soft brush.
When re-installing the burner plate make sure that the notch is on the
right-hand side ( fig. 86, detailed picture).
NOTICE
If the seat of the cover plate leaks, the seal can burn
away.
▶ Check the cover plate for tightness.
NOTICE
Since the effectiveness of the seals in the ignition unit is
reduced, the gas condensing boiler may become
damaged.
▶ The rubber seal ( fig. 88, [3]) and the cover plate
with seal ( fig. 88, [4]) need to be replaced every
4years.
▶ Check the individual components of the ignition unit ( fig. 88) for
wear or contamination ( fig. 87).
▶ If required, replace the ionization electrode and/or glow ignitor.
▶ After checking or replacing the ionization electrode and/or the glow
ignitor fit a new cover plate and rubber seal.
Fig. 86 Removing the burner plate and the burner seal
12.3.4 Checking ignition unit
DANGER:
▶ Close the gas valve prior to working on components
in contact with gas.
▶ Check for gas tightness after carrying out work on
components in contact with gas.
NOTICE
The glow ignitor is fragile.
▶ Handle with care.
7 746 800 040-128.2TD
Fig. 87 Checking the ionization electrode
Fig. 88 Replacing the ignition unit
[1]glow ignitor
[2]Ionization electrode
[3]Rubber seal
[4]Cover plate with seal
[5]Nut
▶ Clean the condensate collector mechanically (using compressed air
or a soft brush) and rinse it with clean water ( fig. 93).
Fig. 93 Cleaning the condensate collector
12.3.7 Clean the heat exchanger
CAUTION:
Incorrect handling can damage the boiler.
▶ Do not use metal brushes or similar hard cleaning
tools.
▶ Handle the glow ignitor with care, it is made from
fragile ceramic material.
▶ Cover the boiler interior using a blanket or a cover to
prevent dirt entering the boiler.
▶ Refit the condensate collector and make sure that the 2 retaining
clips close smoothly. If this is not the case, the seal between the
condensate collector and the flue pipe at the rear side of the heat
exchanger may be leaking.
▶ Connect the flexible condensate drain hose to the condensate
collector.
▶ Re-install the condensate trap.
▶ Rinse the heat exchanger with clean water.
▶ Reassemble all boiler components in reverse order:
– Burner with burner seal,
– Burner cover with fan and gas valve,
– Gas valve,
– Glow ignitor and ionization electrode.
▶ Start up the boiler ( chap. 9 "Start-up procedure", page 33).
12.4Check and adjust the flue gases CO2 emissions
( § 9.9, page 38)
12.5Function check
▶ Slowly open the gas valve by pushing on the gas valve and turning it
¼ rotation in an counterclockwise direction.
▶ Switch ON the appliance by pressing the main switch on the BC10
basic controller [1]).
▶ Set the space heating water temperature knob [8] and the DHW
temperature knob [10] to the maximum temperatures.
▶ Enter a heat demand via the control unit and check that the boiler
starts the heating mode.
▶ Open a hot water tap and check that the boiler starts the DHW mode.
▶ Set the space heating water temperature knob [8] and the DHW
temperature knob [10] to the required temperatures.
1098
WARNING:
If the condensate collector is installed incorrectly.
▶ Flue gas or condensate may leak
▶ Clean the heat exchanger with compressed air or a soft brush
To make it easier to use the buttons on the control panel when the boiler
door is open and to make it easier to read the values in the display, you
can disassemble the control panel from the boiler door and hang it from
the boiler frame.
▶ Open the boiler door.
▶ Loosen the 2 screws of the control panel at the rear side of the boiler
door [1].
Fig. 96 Loosening the screws
▶ Loosen the cable tie [1].
▶ Remove the control panel( fig. 97).
▶ Use the 2 hooks to hang the control panel from the boiler
( fig. 98).
Fig. 98 Hanging the control panel from the boiler frame
13.2Replacing the control panel
▶ Take the control panel from the boiler frame.
▶ Install the control panel in the boiler door by following the procedure
in § 13.1 "Removing the control panel", page 48 in reverse order.
13.3BC10 Display readings
Display readings
Display
reading Key to display readingUnitRange
[\/7/5|Current space heating water
°F[\/\/0| - [1/9/0|
temperature
[p/2/2|Current system pressurepsi[p/0/0| - [p/5/8|
Table 21 BC10 Display readings
Fig. 97 Removing the control panel
13.4BC10 Display settings
Display readings
Display setting Meaning of display settingUnitRangeFactory-adjusted setting
The following table contains all codes that can show on the BC10
display. To show the current display code and/or sub code, press the
“Service”
There are 3 main code groups:
• Operating codes - this code gives the status of the boiler. No action is
Main display
Table 23 Display codes
e button repeatedly.
necessary.
Sub display
code
[\/-/\|
[\/-/\|
[-/a/\|[2/0/8|
[-/h/\|[2/0/0|
[-/h/}[2/0/0|
[=/h/\|[2/0/1|
[=/h/\|[2/0/1|
[0/a/\|[2/0/2|
[0/a/\|[3/0/5|
[0/c/\|[2/8/3|
[0/e/\|[2/6/5|
[0/h/\|[2/0/3|
[0/l/\|[2/8/4|
[0/u/\|[2/7/0|
[0/y/\|[2/0/4|
codeKey to display codeOther effects
Display codes
Operating phase:
Communication test while starting up. This display code flashes 5 times
within 5 seconds while starting up to indicate that the communication
between the UBA 3 and the BC10 basic controller is being tested. If a new
UBA 3 or a new KIM was fitted, this code will flash for max. 10 seconds.
Blocking fault:
If this code continues to flash on the display, there is a fault in the
communication between the UBA 3 and the BC10 basic controller.
1)
Operating phase:
The boiler is in flue gas test or service mode.
1)
Operating phase:
The boiler is in heating mode
2)
Operating phase:
The boiler is in manual operation mode.
1)
Operating phase:
The boiler is in DHW mode.
1)
Operating phase:
Pump run-over time via the external hot water cylinder 130 seconds at
minimum speed. The LED “Burner operation” is off.
1)
Operating phase:
The switch optimization program is activated.
This program is activated if there has been a DHW request from an RC
regulator more frequently than once every 10 minutes. This means that the
boiler cannot be restarted until at least 10 minutes have elapsed since
initial burner start-up.
1)
Operating phase:
The boiler cannot start up temporarily after a DHW request has ended.
1)
Pre-operative phase:
The boiler prepares for a burner start-up whenever a heat demand or a DHW
request arises.
1)
Readiness for operation:
The boiler is in standby mode. There is a current heat demand, but too much
energy has been supplied.
1)
Readiness for operation:
The boiler is in standby mode. There is no current heat demand.
1)
Ignition phase:
The gas valve is activated.
1)
Start-up phase:
The boiler starts up after activation of the mains power supply or completion of a system reset. This code is displayed for a maximum of 4 minutes.
1)
Operating phase:
The flow temperature sensor has detected that the current flow
temperature is higher than the flow temperature setting on the BC10, or
that it is higher than the flow temperature calculated according to the
heating curve, or that it is higher than the flow temperature calculated for
the DHW mode.
• Locking faults - the boiler resumes normal operation when the fault
has cleared.
• Blocking faults - the boiler is locked and will only restart after a
manual reset. The pump will operate continuously for frost
protection.
If a blinking code is displayed together with other codes, all displayed
codes will blink. A locking code will always show on the first screen of the
BC10.
Locking fault:
The flow temperature sensor has measured a current flow temperature
The room temperature is not possibly
reached.
higher than 203 °F (95 °C).
Locking fault:
The safety temperature sensor has measured a current flow temperature
The room temperature is not possibly
reached.
higher than 203 °F (95 °C).
Locking fault:
The return temperature sensor has measured a current return temperature
The room temperature is not possibly
reached.
higher than 203 °F (95 °C).
Blocking fault:
No heating operation and no DHW.
The flue gas sensor temperature is too high.
Locking fault:
No heating operation and no DHW.
There is no connection between contacts 78 and 50 of the UBA 3
installation base.
Blocking fault:
No heating operation and no DHW.
The flue gas sensor contacts have shorted.
Blocking fault:
No heating operation and no DHW.
The flue gas sensor contacts are open.
Locking fault:
No heating operation and no DHW.
The system pressure is too low (less than 3 psi [0.2 bar]).
Locking fault:
The flow temperature sensor has not, after burner start-up, detected any
temperature increase in the heating systems water.
Locking fault:
The heating water temperature difference, measured between the flow
temperature sensor and the safety temperature sensor, is too high.
Locking fault:
The flow temperature sensor has measured a heating water temperature
increase of over 40 °F/s (5 °C/s).
Locking fault:
The temperature difference measured between the flow temperature
sensor and the return temperature sensor, is more than 122 °F (50 °C).
Locking fault:
The pump has stopped or is running without water.
Locking fault:
No feedback from the pump.
Locking fault:
The tacho signal from the fan has failed during the operating phase.
Blocking fault:
No heating operation and no DHW.
No current of air after a certain time.
Operating phase: The appliance has been switched off for a couple of
seconds, because it had been running without any interruption for
24 hours. This is a safety check.
Blocking fault:
No heating operation and no DHW.
The tacho signal from the fan is not present during the pre-operative or
operating phase.
Blocking fault:
No heating operation and no DHW.
The fan is running too slowly.
Blocking fault:
No heating operation and no DHW.
The fan is running too fast.
Blocking fault:
No heating operation and no DHW.
The flow temperature sensor has detected a flow temperature of over
221 °F (105 °C)
No heating operation and no DHW.
There is no bridging cable between contacts 22 and 24 of the UBA 3
contact strip.
Blocking fault:
No heating operation and no DHW.
The sensor test has failed.
Blocking fault:
No heating operation and no DHW.
The safety temperature sensor has detected a flow temperature of over
266 °F (130 °C).
Blocking fault:
No heating operation and no DHW.
The contacts for the safety temperature sensor have shorted or the safety
temperature sensor has detected a flow temperature of over 266 °F
(130 °C).
Blocking fault:
No heating operation and no DHW.
The contacts for the safety temperature sensor have been interrupted.
Blocking fault:
No heating operation and no DHW.
The contacts for the safety temperature sensor have shorted.
Blocking fault:
No heating operation and no DHW.
The contacts for the safety temperature sensor have been interrupted.
Operating phase:
Component test phase.
Locking fault:
The system has detected an insufficient ionization current during the
ignition phase.
Blocking fault:
No heating operation and no DHW.
The system has detected an insufficient ionization current after 4 start-up
attempts.
Blocking fault:
No heating operation and no DHW.
The system has detected an ionization current before burner start-up.
Blocking fault:
No heating operation and no DHW.
An ionization current has been measured after the burner shut down.
Blocking fault:
The system has detected an insufficient ionization current during the
operating phase.
Blocking fault:
No heating operation and no DHW.
The system has detected an insufficient ionization current during the
operating phase.
Blocking fault:
No heating operation and no DHW.
The ionization current is too high.
Blocking fault:
No heating operation and no DHW.
The power supply was interrupted during a locking fault
No heating operation and no DHW.
There was a momentary interruption of power.
Blocking fault:
No heating operation and no DHW.
The UBA 3 is defect.
Blocking fault:
The UBA 3 is defect.
1)
Operating phase:
No heating operation.
The external switch contact is open.
Start-up phase:
The boiler starts up after activation of the mains power supply or
completion of a system reset. This code is displayed for a maximum of
4minutes.
The UBA 3 or the KIM is defective.
Blocking fault:
No heating operation and no DHW.
The UBA 3 or the KIM is defective.
Blocking fault:
No heating operation and no DHW.
The UBA 3 or the KIM is defective.
Blocking fault:
No heating operation and no DHW.
The contacts for the gas valve have been broken.
Blocking fault:
The UBA 3 or the KIM is defective.
Blocking fault:
No heating operation and no DHW.
The UBA 3 or the KIM is defective.
Blocking fault:
No heating operation and no DHW.
The UBA 3 or the KIM is defective.
Locking fault:
Minimum outdoor temperature is assumed.
The contacts to the outdoor-temperature sensor have shorted or are
interrupted, the sensor has been connected incorrectly or is defective.
Locking fault:
No DHW is heated any more.
The contacts to the DHW temperature sensor have shorted or are
interrupted, the sensor has been connected incorrectly or is defective.
Locking fault:
No DHW is heated any more.
The contacts to DHW temperature sensor to have shorted or are
interrupted, the sensor has been connected incorrectly or is defective.
Locking fault:
The boiler water does not warm up. Sensor lead broken or shorted, sensor
connected incorrectly or defective, filling pump connected incorrectly or
defective, permanent tapping or leak.
Locking fault:
No DHW available, but there is heating
operation. The DHW priority is cancelled
when the fault message appears. Switch
the boiler off and on to reset the boiler.
Thermal disinfection was interrupted.
Thermal disinfection has failed. Outlet flow during disinfection period too
high, sensor lead broken or shorted, sensor connected incorrectly or
defective, filling pump defective.
Locking fault:
No connection to EMS. EMS bus system is overloaded, UBA 3/MC10 is
defective.
Locking fault:
The boiler no longer receives a heat
demand. The heating system does not heat
any longer.
No heating operation and no DHW.
Water pressure sensor generates a fault code. The digital water pressure
sensor is defective.
Locking fault:
No communication with BC10. Contact problem at BC10 or BC10 is
BC10 settings are no longer taken over by
RCxx devices.
defective.
Locking fault:
The contacts to the switch sensor have shorted or are interrupted, the
sensor has been connected incorrectly or is defective.
The water flow to the downstream heating
circuits may be faulty now they can no
longer be provided with the required heat
capacity.
Locking fault:
WM10 not available or no communication. WM10 or bus circuit connected
Heating circuit pump 1 is activated
continuously.
incorrectly or defective, WM10 is not recognized by the RC-thermostat.
Locking fault:
Conflicting addresses. Both RC20 and RC35 are registered as Master.
Locking fault:
RC20-HK1 temperature sensor. The integrated temperature sensor of the
remote control (control unit) of heating circuit 1 is defective.
Locking fault:
The contacts to the heating circuit flow sensor have shorted or are
interrupted, the sensor has been connected incorrectly or is defective.
Locking fault:
The contacts to the heating circuit flow sensor have shorted or are
interrupted, the sensor has been connected incorrectly or is defective.
Locking fault:
MM10 not available or no communication. The heating circuit addresses on
the MM10 and the RC35 do not match up, the MM10 or the bus circuit is
connected incorrectly or is defective, MM10 is not recognized by the RC35.
Blocking fault:
The return temperature sensor has measured a return temperature higher
than 221 °F (105 °C)
Blocking fault:
The contacts for the pressure sensor have been interrupted or have
shorted.
Blocking fault:
The contacts for the pressure sensor have shorted.
Blocking fault:
The contacts for the return temperature sensor have shorted.
Blocking fault:
The contacts for the return temperature sensor have been interrupted.
Locking fault:
The UBA 3 or the KIM is defective.
Blocking fault:
The UBA 3 or the KIM is defective.
Since there is no actual room temperature
information, room influence and
optimization of the switch times do not
work. The EMS works on the basis of the
values last set on the remote control.
Since there is no actual room temperature
information, room influence and
optimization of the switch times do not
work.
Heating circuit pump 2 is activated
depending on the preset value. The power
to the mixer is switched off and the mixer
stays in the state it was last put in (can be
adjusted manually).
Heating circuit 2 cannot be operated
correctly. MM10 and the mixer
automatically goes into emergency
operation. Heating circuit pump 2 is
activated continuously. Monitor data in the
RC35 is invalid.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
No heating operation and no DHW.
13
[h/\/7|
[h/\/7|
Operating phase:
The system pressure is too low (less than 12 psi [0.8 bar]).
Operating phase:
The system pressure is too low (less than 12 psi [0.8 bar]).
[p/-.-|
Operating phase:
The system pressure is too high (higher than 58 psi [4.0 bar]).
[\/r/e|
Locking fault:
Reset is carried out. This code appears after the “Reset” button on the
display was pressed for 5 seconds.
Table 23 Display codes
1) Any display code with a dot in bottom right hand corner.
2) Any display code with a blinking dot in bottom right hand corner.
3) Any display code starting with the letter E (except EL).
Electrical data
Mains connection voltageVAC, Hz120, 60
Electrical protection ratingIPX4D
FusesAmp5
Electrical power consumption,
W104156
full load (without a pump group)
Electrical power consumption,
W2929
partial load (without a pump group)
Boiler dimensions and weight
Height × width × depth (with pump group)in (mm)50.4 x 20.5 x 18.3 (1280 x 520 x 465)
Weight (without a pump group)lb (kg)154 (70)
Other specifications
Pump group pumpUP 26-99
Table 24 Technical specifications of GB162-boilers at low BTU
Thermal
power
gas boiler
GB162L.B.
80 kW/
100 kW
Type of
gas
supply
Natural
gas
Altitude
in kwh (m)
4,001 - 10,200
(1,220 - 3,048)
LPG4,001 - 8,000
(1,220 - 2,408)
LPG8,000 - 10,200
(2,408 - 3,048)
Gas orifice
diameter
in mm
(inch)
9.40
(0.370)
4.70
(0.185)
5.00
(0.197)
Set number
with orifice
8718600323
7746900499
7746900499
Type of gas supplyFactory pre-setting of the gas control valve
Natural gasDelivered factory-set: Natural Gas
LP-gasSuitable for propane after conversion (also see
the instruction “Conversion to another type of
gas supply”).
Information on gas type instruction plate:
Set to gas category: Propane.
Table 26 Factory setting of the gas control valve
• The gas orifice diameter is marked on the gas orifice (in mm).
The following are parts commonly required due to damage or
replacements. Their failure will affect safety or performance of this
appliance.
For a pictorial representation of the part see the respective position
number on the exploded view pictures on page 60 and page 61.
DescriptionProduct No.
1Door USA L.B.8718600326
2Sealing door7101382
3Door lock7101384
4Hinge door7101520
5Wall mounting bracket7101386
6Bracket left7101388
7Bracket right7101390
8Adjusting foot7101394
9Transport slide (L+R)7101392
10 Drawer modules7101496
11 Screw 4.2x8.5 (10 pc)7100748
12 Condensate collector7101396
13 Seal condensate collector7746900152
14 Seal Ø 3.2" (80 mm) 7101400
15 Upper side condensate collectors7101402
16 Mounting flue-gas pipe7101398
17 Exhaust pipe7101404
20 Condensate collector8718600611
21 Seal condensate collector73463
22 Drain pipe7101410
23 Sealing bush (white)73449
24 Condensate drain pipe7101535
25 Fan7746900382
26 Seal fan7101450
27 O-ring 70x3 (2 pc)7101416
28 Venturi7746901751
29 Seal Ø 2.4" (60 mm)73563
30 Gas valve, natural gas8718600291
30 Gas valve, LP-gas8718600323
31 Seal 33 x 24 x 3.5 (10 pc)7098962
32 Gas pipe7746900397
33 Flange gas valve8718600286
34 O-ring (10 pc)7101504
36 Screw M5 x 20 (10 pc)7099650
37 Screw M5 x 16 (10 pc)7101484
38 Screw M6 x 20 (10 pc)7101486
39 Air inlet pipe7101462
40 Sealing (10 pc)7101482
41 Air vent revision set7101428
42 Clip7101430
43 Sensor NTC7746900391
44 Clip (4 x 2 pc)7746700063
45 O-ring 9.19 x 2.62 (10 pc)78175s
Table 30 Spare parts
DescriptionProduct No.
46 Pressure sensor8718600019
47 O-ring 14 x 1.78 (10 pc)7101646
48 Return/supply pipe7101438
49 Connection nipple CH73080
50 Clip7746700069
51 O-ring (10 pc)7101488
52 Flue gas sensor7746700420
56 Mounting set with sight glass8718600172