A.O. Smith BFM - 100 Supplement

Instruction manual BFM 3
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Read this manual carefully Warning
Read this manual carefully before starting up the water heater. Failure to
read this manual and to follow the instructions in this manual may lead to
accidents, personal injury, and damage to the appliance.
Copyright © 2007 A.O. Smith Water Products Company
All rights reserved.
Nothing from this publication may be copied, reproduced and/or published by
means of printing, photocopying or by whatsoever means, without the prior
written approval of A.O. Smith Water Products Company.
A.O. Smith Water Products Company reserves the right to modify specifications
stated in this manual.
Trademarks Any brand names mentioned in this manual are registered trademarks of their
respective owners.
Liability A.O. Smith Water Products Company accepts no liability for claims from third
parties arising from improper use other than that stated in this manual and in
accordance with the General Conditions registered at the Eindhoven Chamber
of Commerce.
Refer further to the General Conditions. These are available on request, free of
charge.
Although considerable care has been taken to ensure a correct and suitably
comprehensive description of all relevant components, the manual may
nonetheless contain errors and inaccuracies.
Should you detect any errors or inaccuracies in the manual, we would be
grateful if you would inform us. This helps us to further improve our
documentation.
More information If you have any comments or queries concerning any aspect related to the
appliance, then please do not hesitate to contact:
A.O. Smith Water Products Company
PO Box 70
5500 AB Veldhoven
Netherlands
Telephone: (free) 0870 - AOSMITH
0870 - 267 64 84
General: [phone]
Fax: [phone]
E-mail : [e-mail]
Website: www.aosmithinternational.com
In the event of problems with connecting to the gas, electricity or water supply,
please contact your installation's supplier/installation engineer .

4Instruction manual BFM
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Instruction manual BFM 5
Table of contents
1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
1.1 About the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
1.2 What to do if you smell gas- - - - - - - - - - - - - - - - - - - - - - - - - 7
1.3 Regulations - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 7
1.4 Maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
1.5 Forms of notation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
1.6 Target groups - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 8
1.7 Overview of this document - - - - - - - - - - - - - - - - - - - - - - - - - 9
2 Working principle of the appliance- - - - - - - - - - - - - - - 11
2.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 11
2.2 General working principle of the appliance - - - - - - - - - - - - - - - - 11
2.3 The appliance's heating cycle - - - - - - - - - - - - - - - - - - - - - - 13
2.4 Protection for the appliance - - - - - - - - - - - - - - - - - - - - - - - 13
2.5 Safety of the installation - - - - - - - - - - - - - - - - - - - - - - - - - 15
3 Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
3.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
3.2 Packaging - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
3.3 Ambient conditions- - - - - - - - - - - - - - - - - - - - - - - - - - - - 17
3.4 Technical specifications - - - - - - - - - - - - - - - - - - - - - - - - - 19
3.5 Installation diagram - - - - - - - - - - - - - - - - - - - - - - - - - - - 23
3.6 Water connections, Vented- - - - - - - - - - - - - - - - - - - - - - - - 24
3.7 Water connections, Unvented - - - - - - - - - - - - - - - - - - - - - - 25
3.8 Gas connection - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 26
3.9 Air supply and flue - - - - - - - - - - - - - - - - - - - - - - - - - - - - 27
3.10 Electrical connection - - - - - - - - - - - - - - - - - - - - - - - - - - - 34
3.11 Checking the supply pressure and burner pressure - - - - - - - - - - - - 36
4 Conversion to a different gas category - - - - - - - - - - - - 39
4.1 Conversion - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 39
4.2 Orifice replacement - - - - - - - - - - - - - - - - - - - - - - - - - - - 40
4.3 Replacement of burner pressure regulator or blank plate BFM30-50-80-100 41
5 Filling - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 43
5.1 Filling unvented installations - - - - - - - - - - - - - - - - - - - - - - - 44
5.2 Filling vented installations - - - - - - - - - - - - - - - - - - - - - - - - 44
6 Draining - - - - - - - - - - - - - - - - - - - - - - - - - - - - 45
6.1 Draining unvented installations - - - - - - - - - - - - - - - - - - - - - - 46
6.2 Draining vented installations - - - - - - - - - - - - - - - - - - - - - - - 47
7 The control panel- - - - - - - - - - - - - - - - - - - - - - - - 49
7.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49
7.2 Control panel - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49
7.3 Explanation of icons - - - - - - - - - - - - - - - - - - - - - - - - - - - 49
7.4 ON/OFF switch - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49
7.5 Control thermostat - - - - - - - - - - - - - - - - - - - - - - - - - - - - 49
7.6 Burner control reset button - - - - - - - - - - - - - - - - - - - - - - - - 50
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Table of contents
6Instruction manual BFM
8 Status of the appliance - - - - - - - - - - - - - - - - - - - - - 51
8.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51
8.2 Operating modes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51
8.3 Error conditions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 51
9 Starting and running - - - - - - - - - - - - - - - - - - - - - - 53
9.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 53
9.2 Starting the appliance - - - - - - - - - - - - - - - - - - - - - - - - - - - 53
9.3 The appliance's heating cycle - - - - - - - - - - - - - - - - - - - - - - - 53
10 Shutting down - - - - - - - - - - - - - - - - - - - - - - - - - 55
10.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 55
10.2 Shutting down the appliance for a brief period (OFF mode)- - - - - - - - - 55
10.3 Isolating the appliance from the mains - - - - - - - - - - - - - - - - - - - 55
10.4 Shutting the appliance down for a long period - - - - - - - - - - - - - - - 55
11 Troubleshooting - - - - - - - - - - - - - - - - - - - - - - - - 57
11.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57
11.2 Troubleshooting: general errors - - - - - - - - - - - - - - - - - - - - - - 58
11.3 Troubleshooting: insufficient hot water - - - - - - - - - - - - - - - - - - - 59
11.4 Troubleshooting: No hot water- - - - - - - - - - - - - - - - - - - - - - - 60
12 Performing maintenance - - - - - - - - - - - - - - - - - - - - 63
12.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 63
12.2 Preparation for maintenance - - - - - - - - - - - - - - - - - - - - - - - 63
12.3 Water-side maintenance - - - - - - - - - - - - - - - - - - - - - - - - - 64
12.4 Gas-side maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - 66
12.5 Finalising maintenance - - - - - - - - - - - - - - - - - - - - - - - - - - 66
13 Warranty (certificate) - - - - - - - - - - - - - - - - - - - - - - 67
13.1 General warranty - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 67
13.2 Tank warranty- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 67
13.3 Conditions for Installation and use - - - - - - - - - - - - - - - - - - - - - 67
13.4 Exclusions - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 68
13.5 Scope of the warranty - - - - - - - - - - - - - - - - - - - - - - - - - - - 68
13.6 Claims - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 68
13.7 Obligations of A.O. Smith - - - - - - - - - - - - - - - - - - - - - - - - - 68
14 Electrical diagram - - - - - - - - - - - - - - - - - - - - - - - 69
14.1 Introduction - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 69
14.2 BFM Electrical Diagram.- - - - - - - - - - - - - - - - - - - - - - - - - - 70

Instruction manual BFM 7
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1 Introduction
1.1 About the appliance This manual describes how to install, service and use the BFM appliance. The
BFM appliance is a gas-fired sealed boiler with a fan in the air supply. The
parallel or concentric chimney connections are appliance-dependent. Possible
installation types are C13 or C33. The information in this manual applies to the:
BFM 30, BFM 50, BFM 80, BFM 100 and BFM 120.
The appliance has been manufactured and equipped in accordance with the
European standard for gas-fired storage water heaters for the production of
domestic hot water (EN 89). The appliances are therefore compliant with the
European Directive for Gas Appliances, and and are entitled to bear the CE
mark.
Warning
Read this manual carefully before starting up the water heater. Failure to
read the manual and to follow the printed instructions may lead to personal
injury and damage to the appliance.
1.2 What to do if you
smell gas
Warning
If there is a gas smell:
No naked flames! No smoking!
Avoid causing sparks! Do not use any electrical equipment or switch, i.e. no
telephones, plugs or bells!
Open windows and doors!
Shut off the mains gas supply valve!
Warn occupants and leave the building!
After leaving the building, alert the gas distribution company or your installation
engineer.
1.3 Regulations As the (end) user, installation engineer or service and maintenance engineer,
you must ensure that the entire installation complies, as a minimum, with the
official local:
• building regulations;
• energy supplier's directives for existing gas installations;
• directives and technical guidelines for natural gas installations;
• safety requirements for low-voltage installations;
• regulations governing the supply of drinking water;
• regulations governing ventilation in buildings;
• regulations governing the supply of air for combustion;
• regulations governing the discharge of products of combustion;
• requirements for installations that consume gas;
• regulations governing indoor waste water disposal;
• regulations imposed by fire brigade, power companies and municipality.
0063

Introduction
8Instruction manual BFM
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Furthermore, the installation must comply with the manufacturer's instructions.
Note
Later amendments and/or additions to all regulations, requirements and
guidelines published on or prior to the moment of installing, will apply to the
installation.
1.4 Maintenance A service should be carried out at least once a year, both on the water side and
on the gas side. Maintenance frequency depends, among other things, on the
water quality, the average burning time per day and the set water temperature.
Note
To determine the correct maintenance frequency, it is recommended to
arrange for the service and maintenance engineer to check the appliance on
both the water and gas side within three months following installation. Based on
this check, the best maintenance frequency can be determined.
Note
Regular maintenance extends the service life of the appliance.
Note
Both the end user and the service and maintenance engineer are
responsible for regular maintenance. They will need to establish clear
agreements on this.
Note
If the appliance is not regularly maintained, the warranty will become void.
1.5 Forms of notation The following notation is used in this manual:
Note
Important information.
Caution
Ignoring this information can lead to the appliance being damaged.
Warning
Failure to carefully read this information may lead to personal injury and
serious damage to the appliance.
1.6 Target groups The three target groups for this manual are:
• (end) users;
• installation engineers;
• service and maintenance engineers.
Symbols on each page indicate the target groups for whom the information is
intended. See the table.
Target group symbols
Symbol Target group
(End) user
Installation engineer
Service and maintenance engineer

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1.7 Overview of this
document
The table provides an overview of the contents of this document.
Contents of this document
Chapter Target groups Description
Working principle of the
appliance
This chapter describes how the appliance functions.
Installation This chapter describes the installation activity to be
completed before you actually start up the appliance.
Filling This chapter describes how to fill the appliance.
Draining This chapter describes how to drain the appliance.
The control panel This chapter describes the general operation of the
appliance and explains how to use the control panel.
Status of the appliance This chapter describes the status (mode or condition) that
the appliance may have, and possible actions to take.
Starting and running This chapter describes how to start the appliance running.
The general heating cycle of the appliance is also
described.
Shutting down This chapter describes how to shut the appliance down for
a brief or long period of time.
Troubleshooting This chapter is mainly intended for the installation
engineer and the service and maintenance engineer. It
describes appliance errors. A table is included stating
potential symptoms, causes and solutions. End users
may also refer to this chapter for additional information
about the appliance.
Performing maintenance This chapter sets out the maintenance tasks to be carried
out during a service.
Warranty (certificate) This chapter states the warranty terms and conditions.

Introduction
10 Instruction manual BFM
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Instruction manual BFM 11
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2 Working principle of
the appliance
2.1 Introduction Topics covered in this chapter:
•General working principle of the appliance;
•The appliance's heating cycle;
•Protection for the appliance;
•Safety of the installation.
2.2 General working
principle of the
appliance
The figure shows a cut-away view of the appliance.

Working principle of the appliance
12 Instruction manual BFM
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Cut-away view of the appliance
Legend
Only applicable numbers are
mentioned.
2. hot water outlet
5. pressure switch
8. combustion chamber
9. anode
10. tank
11. heat exchanger
12. inspection and cleaning opening
14. cold water inlet
15. drain valve
16. gas control
18. fan
21. flame probe
22. chimney pipe
24. insulation layer
36. bar burners/burner tray
38. safety thermostat sensor
39. high-limit thermostat sensor
40. burner control
41. control thermostat
42. high-limit thermostat
43. safety thermostat
44. frost thermostat
45. control thermostat sensor
46. frost thermostat sensor
47. air supply
49. air restrictor
50 combustion chamber with
air distribution plate
51. pilot burner
52. spark igniter
IMD-0240 R2
22
22
47
47
18
48
9
11
10
24
49
12
14
15
8
50
36
2
41
5
42
39
43
38
44
40
46
45
21
51
52
16
16
18

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In this appliance, the cold water enters the bottom of the tank through the cold
water inlet (14). The heat of combustion is conducted to the water by the
combustion chamber (50) and heat exchanger (11). The heated tap water
leaves the tank through the hot water outlet (2). Once the appliance is
completely filled with water, it will constantly be under mains water pressure.
When hot water is drawn from the appliance, it is immediately replenished with
cold water.
The air required for combustion is forced into the combustion chamber by the
fan.
The gas required for combustion flows via the gas control (16) in the manifold.
The gas control for the BFM 120 is non-standard (see box). Orifices are
mounted in the manifold. The gas is injected into the burner bars at pressure
from these orifices (36). The burner bars together form the burner tray. The
injection of gas into the burner bars also draws in the primary air from the
combustion chamber, which is required for combustion. The narrow opening in
the orifice causes the gas flow to accelerate. This in turn causes a partial
vacuum. It is this partial vacuum that draws in the air (the Venturi effect).
Ignition of the gas/air mixture takes place in two stages. First, the pilot flame is
ignited by a spark igniter. This pilot flame then ensures that the complete ignition
takes place.
The flue gases released by this combustion are led through the heat exchanger.
The heat exchanger is composed of flue tubes that contain flue baffles. These
retard the flow of the flue gases, thereby increasing the thermal efficiency of the
appliance.
The flue gases are exhausted from the appliance via the top box (46). The top
box of the BFM 100 and 120 is non-standard (see box).
An air distribution plate (50) mounted below the burner tray radiation shield also
serves as a radiation shield. Any condensation that forms is drained towards the
siphon via the air distribution plate.
The PU insulation layer (24) prevents heat loss. The inside of the tank is
enamelled to protect against corrosion. The anodes (9) offer extra protection.
2.3 The appliance's
heating cycle The entire appliance is controlled by the burner control (40) and the control
thermostat (41) or frost thermostat (44). The control thermostat and frost
thermostat both independently measure the water temperature (Twater). The
appliance's heating cycle is activated as soon as Twater falls below the threshold
value (Tset). The value of Tset depends on the selected mode of the
appliance (8.2 "Operating modes"). When the appliance is in OFF mode (frost
protection), this value is determined by the frost thermostat (threshold value =
20°C). When the appliance is in ’ON mode’, the threshold value can be set via
the control thermostat (±40°C - ±70°C).
The instant Twater falls below Tset, the appropriate thermostat (control or frost)
will close, and the burner control will identify a heat demand. The gas control will
open, and the gas will mix with air. This mixture is ignited by the spark igniter,
and the water becomes heated. As soon as Twater rises above Tset, the
thermostats will open once more. The heat demand is suspended, and the
burner control stops the heating cycle.
The thermostats have a certain margin both when opening and when closing.
We refer to this margin as hysteresis. The hysteresis cannot be adjusted.
2.4 Protection for the
appliance
2.4.1 Introduction
The burner control monitors the water temperature by means of thermostats,
and ensures that the combustion is safe. This takes place using:

Working principle of the appliance
14 Instruction manual BFM
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• the Water temperature protection;
• the Flame probe;
• the Pressure switch.
2.4.2 Water temperature protection
By means of the frost, high-limit and safety thermostats, the burner control
monitors three temperatures that are important for safety. The table explains the
working principle of the thermostats with sensors.
Temperature protection
2.4.3 Pressure switch
The pressure switch ensures the discharge of flue gases and the supply of
incoming air during the pre-purge and normal running of the appliance. The
default state of the pressure switch is open. When sufficient pressure difference
is reached, the pressure switch closes. However, in the event of a fault, the
pressure switch is tripped open, and the heating cycle is interrupted. The table
shows the trip point per appliance.
Note
The trip point of the pressure switch is not adjustable.
Pressure switch trip points
2.4.4 Flame probe
To ensure that no gas can flow when there is no combustion, the water heater
is fitted with a flame probe (21). The burner control uses the ionisation-detecting
properties of this probe for flame detection. The burner control closes the gas
valve the instant it determines that there is a gas flow but no flame is present.
Protection Description
Frost thermostat When the frost thermostat sensor (46) measures a temperature of 20°C or
less, the heating cycle (2.3 "The appliance's heating cycle") will start.
High-limit thermostat When the high-limit thermostat sensor (39) measures a temperature higher
than 84°C, the high-limit thermostat will open. The heat demand is terminated
and the burner control halts the heating cycle until the high-limit thermostats
close once more. At that moment the burner control will reset the appliance and
the heating cycle will restart. The high-limit safeguard serves to prevent
overheating and/or excessive formation of scale in the appliance.
Safety thermostat When the safety thermostat sensor (38) measures a temperature higher than
93°C, the safety thermostat will open. The heat demand is terminated and the
burner control will immediately halt the heating cycle. The burner control will go
into a lockout error state. This must be manually reset before the appliance can
resume operation.
Appliance Closing pressure
difference
Opening pressure difference
BFM
30
> 200 Pa < 170 Pa
BFM
50
> 270 Pa < 240 Pa
BFM
80
> 255 Pa < 225 Pa
BFM
100
> 610 Pa < 580 Pa
BFM
120
> 220 Pa < 190 Pa

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2.5 Safety of the instal-
lation In addition to the appliance's standard built-in safety monitoring, the appliance
must also be protected by an expansion vessel, expansion valve, pressure
reducing valve, non-return valve and a T&P valve.
The use of an expansion vessel, expansion valve and/or pressure reducing
valve depends on the type of installation: unvented or vented.
2.5.1 Unvented installation
With an unvented installation, an expansion valve valve and expansion vessel
prevent the buildup of excessive pressure in the tank. This prevents damage
being caused to the enamelled coating (in the appliance) or to the tank. A non-
return valve prevents excessive pressure buildup in the water supply system.
This valve also prevents water from flowing backwards from the tank into the
cold water supply system. The pressure reducing valve protects the installation
against an excessively high water supply pressure (> 8 bar). These components
are fitted to the cold water pipe (3.6 "Water connections, Vented").
2.5.2 Vented installation
With a vented installation, excess pressure is taken up by the open cold water
head tank. The height of the head tank determines the working pressure in the
water heater, which may not exceed 8 bar. The installation must also be fitted
with a vent pipe from the hot water pipe, that opens into the cold water tank.
Ideally, the vent pipe should discharge into a separate tundish/drain or
otherwise to the open cold water head tank. The water heater should also be
fitted on the hot water side with a stop valve (3.7.3 "Hot water side").
2.5.3 T&P valve
A T&P valve is only mandatory in an unvented installation. However, A.O. Smith
also recommends the use of a T&P valve in vented installations.
A T&P (Temperature and Pressure Relief) valve monitors the pressure in the
tank and the water temperature at the top of the tank. If the pressure in the tank
becomes excessive (> 10 bar) or the water temperature is too high (> 97°C), the
valve will open. The hot water can now flow out of the tank. Because the
appliance is under water supply pressure, cold water will automatically flow into
the tank. The valve remains open until the unsafe situation has been rectified.
The appliance is fitted standard with a connecting point for a T&P
valve (3.7.3 "Hot water side").

Working principle of the appliance
16 Instruction manual BFM
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Instruction manual BFM 17
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3 Installation
Warning
Installation work should be carried out by an approved installation engineer
in compliance with the general and local regulations imposed by the gas, water
and power supply companies and the fire service.
The appliance may only be installed in a room that complies with the
requirements stated in national and local ventilation
regulations (1.3 "Regulations").
3.1 Introduction This chapter describes the installation activities to be carried out before the
appliance may be started up (9 "Starting and running"), in particular:
•Packaging;
•Ambient conditions;
•Technical specifications;
•Water connections, Vented;
•Water connections, Vented;
•Gas connection;
•Air supply and flue;
•Electrical connection;
•Checking the supply pressure and burner pressure.
For a possible conversion to a different gas category, see
conversion (4 "Conversion to a different gas category").
3.2 Packaging To avoid damaging the appliance, remove the packaging carefully.
We recommend unpacking the appliance at or near its intended location.
Caution
The appliance may only be manoeuvred in an upright position. Take care
that the appliance is not damaged after unpacking.
3.3 Ambient conditions The appliance has a sealed combustion chamber, and obtains its air supply
independently of the boiler room. There are therefore no additional ventilation
requirements.
Possible installation types are C13 and C33.
3.3.1 Air humidity and ambient temperature
The boiler room must be frost-free, or be protected against frost. The table
shows the environmental conditions that must be adhered to for correct
functioning of the electronics present in the appliance to be guaranteed.
Air humidity and ambient temperature specifications
Air humidity and ambient temperature
Air humidity max. 93% RV at +25°C
Ambient temperature Functional: 0 < T < 60°C

Installation
18 Instruction manual BFM
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3.3.2 Maximum floor load
Allow for the appliance's weight with respect to the maximum floor load; refer to
the table.
3.3.3 Water composition
The appliance is intended for heating drinking water. The drinking water must
comply with the regulations governing drinking water for human consumption.
The table gives an overview of the specifications.
Water specifications
Note
If the water specifications deviate from those stated in the table, then the
tank protection cannot be guaranteed (13 "Warranty (certificate)").
3.3.4 Working clearances
For access to the appliance, it is recommended that the following clearances
are observed (see figure):
• AA: around the appliance's control column and cleaning openings: 100cm.
• BB: all sides of the appliance: 50cm.
• Above the appliance (room to replace the anodes):
- 100cm if using fixed anodes, or
- 50cm if using flexible anodes.
If the available clearance is less than 100cm, flexible magnesium anodes
may be ordered.
Note
When installing the appliance, be aware that any leakage from the tank
and/or connections can cause damage to the immediate environment or floors
below the level of the boiler room. If this is the case, the appliance should be
installed above a wastewater drain or in a suitable metal leak tray.
The leak tray must have an appropriate wastewater drain and must be at least
5cm deep with a length and width at least 5cm greater than the diameter of the
appliance.
Weight of the appliance filled with water
BFM 30 BFM 50 BFM 80 BFM 100 BFM 120
539 kg 543 kg 548 kg 573 kg 573 kg
Water composition
Hardness
(alkaline earth ions)
> 1.00 mmol/l:
• German hardness> 5.6° dH
• French hardness > 10.0° fH
• English hardness > 7.0° eH
Conductivity > 125 µS/cm
Acidity (pH value) 7.0 < pH value < 9.5

Instruction manual BFM 19
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Working clearances
3.4 Technical specifica-
tions
The appliance is supplied without accessories. Check the
dimensions (3.4.1 "Dimensions of the appliance"), gas data (3.4.3 "Gas data")
and other specifications (3.4.2 "General and electrical specifications") of any
accessories you plan to use.
IMD-
0
241 R1
AA
A
A
AA
BB

Installation
20 Instruction manual BFM
3is
3.4.1 Dimensions of the appliance
Plan and elevation of the appliance
Replacement of burner pressure regulator or blank plate BFM30-50-80-100
(2) = BFM 100, 120
IMD-
005
7 R
5
37º
10º
45º 37º
10º
45º
A
B
N
S
1
6
6
2
5
3
4
D
K
RM
P
P
6
4/6
F
E
G/L
6
4/6
F
E
G
L
CC
Hy
12