Viessmann Vitomax LW M64 Series User manual

Installation instructions
for contractors
Viesmann
Vitomax LW
Type M148
Type M62
Type M64
Type M82
Type M84
Low pressure hot water boilers
VITOMAX LW
5672931 GB 1/2019

2
Please follow these safety instructions closely to
prevent accidents and material losses.
Safety instructions explained
Danger
This symbol warns against the risk of injury.
!Please note
This symbol warns against the risk of material
losses and environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Target group
These instructions are exclusively intended for quali-
fied contractors.
■Work on gas installations must only be carried out by
a registered gas fitter.
■Work on electrical equipment may only be carried
out by a qualified electrician.
■The commissioning must only be carried out by
trained specialist personnel in accordance with the
Viessmann operating and service instructions.
Regulations to be observed
■Pressure Equipment Directive
■Health and Safety at Work Act (BetrSichV) [Ger-
many] and extended technical rules for operational
safety (TRBS)
■Country-specific safety regulations for the installation
site
■National installation regulations
■Statutory regulations for the prevention of accidents
■Statutory regulations for environmental protection
■Codes of practice of the relevant trade associations
Working on the system
■Close the fuel shut-off valve and secure against
unintentional reopening.
■Isolate the system from the power supply, e.g. by
removing the separate fuse or by means of a mains
isolator, and check that it is no longer 'live'.
■Safeguard the system against reconnection.
Safety instructions
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1. Installation information Preparing for installation ........................................................................ 4
■Symbols .............................................................................................. 4
■Designation of boiler types ................................................................. 4
■Intended use ....................................................................................... 5
■Storing Viessmann shell boilers .......................................................... 5
■Transporting a shell boiler .................................................................. 6
2. Installation sequence Handling and levelling the boiler ............................................................ 7
■Recommended minimum clearances ................................................. 7
■Anti-vibration supports ........................................................................ 8
Type M148: Moving the hinge brackets to the other side of the boiler
door ........................................................................................................ 8
Boiler connections ................................................................................. 12
Installing the pipework ........................................................................... 14
Fitting the measuring and control equipment ......................................... 14
■Preparing for the control unit installation ............................................ 15
■Equipment for control and limitation ................................................... 15
Connections on the flue gas side ........................................................... 15
■Mounting the flue pipe ........................................................................ 15
Fitting the sight glass ............................................................................. 16
Installing the burner ............................................................................... 16
■Preparing the burner connection ........................................................ 16
■Fitting the burner plate (if delivered separately) ................................. 16
Adjusting the burner ............................................................................... 17
Commissioning and adjustment ............................................................. 23
Index
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Symbols
Symbol Meaning
Reference to other document containing
further information
1.
Step in a diagram:
The numbers correspond to the order in
which the steps are carried out.
Warning of material losses and environ-
mental pollution
Live electrical area
Pay particular attention.
■Component must audibly click into place.
or
■Acoustic signal
■Fit new component.
or
■In conjunction with a tool: Clean the sur-
face.
Dispose of component correctly.
Dispose of component at a suitable collec-
tion point. Do not dispose of component in
domestic waste.
The steps in connection with commissioning, inspec-
tion and maintenance are found in the "Commission-
ing, inspection and maintenance" section and identified
as follows:
Symbol Meaning
Steps required during commissioning
Not required during commissioning
Steps required during inspection
Not required during inspection
Steps required during maintenance
Not required during maintenance
Note
All diagrams in this document are schematic, illustra-
tive examples.
Designation of boiler types
Capital letters indicate the respective stage of develop-
ment (version) of the boiler type.
Example M62C: Boiler type M62 version C
Preparing for installation
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Intended use
The appliance is intended solely for installation and
operation in sealed unvented heating systems, with
due attention paid to the associated installation, serv-
ice and operating instructions. The appliance is inten-
ded exclusively for steam generation and for heating
water in accordance with EN 12953 and AGFW data-
sheet FW510 (VdTÜV datasheet TCh 1466).
Commercial or industrial use for a purpose other than
steam generation or the heating of water shall be
deemed inappropriate.
All other use is deemed inappropriate. Any resulting
losses are excluded from the manufacturer's liability.
Any usage beyond this must be approved by the man-
ufacturer in each individual case.
Intended use presupposes that a permanent installa-
tion in conjunction with permissible components
designed for this purpose has been carried out.
Intended use also includes adherence to maintenance
and inspection intervals.
Storing Viessmann shell boilers
Recommendation for corrosion prevention
Please follow all instructions carefully.
Applicability of instructions
Storage of boilers until system installation.
General
■Store Viessmann shell boilers in closed rooms, pro-
tected from weather influences and under dry condi-
tions.
■The room temperature must not fall below 0 °C or
exceed 50 °C.
■Viessmann shell boilers are delivered equipped with
blank flanges or protective caps on the water side,
for protection against the ingress of foreign bodies.
■To prevent the formation of condensate on the boiler:
–Remove the transport packaging after delivery or
–Protect the boiler against moisture by using a des-
iccant.
Storage period > 4 weeks
■Protect the interior of the shell boiler against mois-
ture. Use a desiccant, e.g. silica gel, on the flue gas
and water side.
■Use the appropriate amount of desiccant for the vol-
ume of the boiler.
Note
Observe the desiccant manufacturer's instructions.
■Check the effectiveness of the desiccant at regular
intervals.
■Ensure that the desiccant does not come into contact
with the boiler material.
Recommendation
Fill suitable containers with desiccant. Suspend the
containers in the boiler body.
■Instead of extracting the moisture on the flue gas
side by means of a desiccant, a dryer with air circula-
tion can also be used.
■Coat the dry flue gas side of the shell boiler with a
thin film of graphite or varnish.
Preparing for installation (cont.)
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Transporting a shell boiler
Danger
Inappropriate handling of the boiler may lead to
accidents. There is a risk of injury.
Only use the slinging points. Observe all the
applicable regulations on accident prevention.
F1/2 F1/2
90°
>45°
Fig. 1 Options for attaching lifting gear
A, BHoles for load handling equipment (7 80 mm)
CBase rail (bearing points on boiler base)
1. Attach lifting gear to boiler at A.2. Move the boiler.
■Place steel rollers underneath bearing points C.
■Secure traction mechanism to holes for load han-
dling equipment B (7 80 mm).
Preparing for installation (cont.)
5672931

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Recommended minimum clearances
c
x1
f
y1/2
d
e
a
C
D
A B
b
y1
Fig. 2
ABoiler
BBurner
CControl system and control panel
DAnti-vibration boiler supports
a Control panel not fitted
b Control panel depth
c Control panel fitted
d, e, f Other clearances
x1, y1 See tables of dimensions: Max. length, max.
width
a mm ≥1000
b mm Subject to the selected control
panel
c mm ≥800
d mm ≥500
e mm ≥300
f mm ≥500
Tab. 1
Recommendation for dimension f
Leave one boiler length (x1) of space in front of the
boiler door to extract the turbulators (if fitted) and for
cleaning.
Observe the stated dimensions to ensure straightfor-
ward installation and maintenance.
Observe the clearances with regard to the regulations
applicable at the installation site. Allow for equipment
and accessories.
The installation surface must be level. Level the boiler
horizontally.
M148*1
Boiler size*2 1 2 3 4 5 6 7 8 9 A B
x1 mm 2310 2490 2670 2900 3060 3310 3580 3870 4320 4500 4825
y1 mm 1500 1560 1620 1690 1820 1880 2030 2092 2235 2320 2420
Tab. 2
M62C
Boiler size*2 1 2 3 4 5 6 7 8 9 A B C
x1 mm 4110 4110 4370 4370 4730 4730 5200 5200 5790 5790 6508 6508
y1 mm 1925 1925 2010 2010 2150 2150 2280 2280 2400 2400 2670 2670
Tab. 3
M64B
Boiler size*2 3 4 5 6 7 8 9
x1 mm 6995 7545 8035 8525 8970 9410 9710
y1 mm 2875 3000 3175 3325 3450 3575 3650
Tab. 4
M82A
Boiler size*2 1 2 3 4 5 6 7
x1 mm 3970 4200 4460 4720 5070 5420 5780
y1 mm 2025 2100 2200 2325 2410 2485 2575
Tab. 5
*1 You may hang the boiler door for l.h. or r.h. opening. If the available space means the boiler door needs to be hinged on the
right, mirror the dimensions shown in the drawing.
*2 Last digit of type designation
Handling and levelling the boiler
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M84B
Boiler size*2 3 4 5 6 7 8 9
x1 mm 6995 7545 8035 8525 8970 9410 9710
y1 mm 3025 3175 3300 3450 3525 3625 3675
Tab. 6
Anti-vibration supports
Recommendation
Use to provide vibration isolation and minimise trans-
mission of structure-borne noise.
Installation of anti-vibration supports
Manufacturer's installation instructions
Type M148: Moving the hinge brackets to the other side of the boiler door
Fig. 3
Danger
Risk of injury through falling boiler door
The hinge brackets may only be moved to the
other side of the boiler door if the burner has
been removed and the boiler door is closed.
1.
Fig. 4
01. Remove top nut and washer.
*2 Last digit of type designation
Handling and levelling the boiler (cont.)
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3.
2.
2.
Fig. 5
02. Remove split pin and pull out bolt.
03. Remove eye screw.
4.
7. 8.
5.
Fig. 6
04. Insert eye screw until it sits behind the joint piece.
05. Screw on the nut and slot the washer on.
06. Continue inserting eye screw through hole.
07. Mount washer and screw on nut (washer and nut
are supplied with the hinge).
08. Insert bolt.
9.
Fig. 7
09. Tighten nuts (approx. 100 Nm).
Secure bolt with split pin.
10. Repeat steps 1 to 9 for the lower fitting.
Type M148: Moving the hinge brackets to the… (cont.)
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11.
12.
Fig. 8
11. Remove split pin and undo nuts.
12. Pull out bolt.
14.
13.
13.
Fig. 9
13. Remove nuts and washers.
14. Remove eye screw.
17.
15.
16.
18.
Fig. 10
15. Insert eye screw.
16. Insert bolt.
17. Position the washer. Screw on the nut and tighten
until the boiler door gasket forms a tight seal.
18. Insert split pin.
19. Repeat steps 11 to 18 for the lower fitting.
Type M148: Moving the hinge brackets to the… (cont.)
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140 0
-3
Fig. 11
140 0
-3
Fig. 12
20. Check that the boiler door is tightly sealed all the
way round and adjust if required.
All specified dimensions are test dimensions.
Type M148: Moving the hinge brackets to the… (cont.)
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M148
Boiler size 1 2 3 4 5 6 7 8 9 A B
Boiler flow and return
For permiss. operating
pressure
6 bar PN16 DN 80 100 100 125 125 150 150 200 200 200 250
10 bar PN16 DN 80 100 100 125 125 150 150 200 200 200 250
Safety valve
For permiss. operating
pressure
6 bar PN16 DN – – – 50 50 65*3 65*3 80 80 100 100
6 bar PN40 DN 32 40 40 – – – – – – – –
10 bar PN16 DN – – – – – 50 50 65*3 65*3 65*3 80
10 bar PN40 DN 25 32 32 40 40 – – – – – –
Drain outlet
For permiss. operating
pressure
6 bar
PN40 DN 32 32 32 32 32 40 40 40 40 40 40
10 bar PN40 DN 32 32 32 32 32 40 40 40 40 40 40
Tab. 7
M62C
Boiler size 1 2 3 4 5 6 7 8 9 A B C
Boiler flow and return
For permiss. operating
pressure
6 bar PN16 DN 150 150 150 150 200 200 200 200 250 250 250 250
10 bar PN16 DN 150 150 150 150 200 200 200 200 250 250 250 250
16 bar PN25 DN – – – – 200 200 200 200 250 250 250 250
16 bar PN40 DN 150 150 150 150 – – – – – – – –
Safety valve
For permiss. operating
pressure
6 bar PN16 DN 50 50 65*3 65*3 65*3 65*3 65*3 80 80 80 100 100
10 bar PN16 DN –50 50 50 50 65*3 65*3 65*3 65*3 65*3 80 80
10 bar PN40 DN 40 – – – – – – – – – – –
16 bar PN40 DN 32 40 40 40 40 50 50 50 65 65 65 65
Tab. 8
Note
Drain connector type for boiler sizes 1 to C
■As R 1½ connector
■As DN40 PN40 connector (optionally via threaded flange)
M64B
Boiler size 3 4 5 6 7 8 9
Boiler flow and return
For permiss. operating pressure 6,
10 bar
Temperature spread 40 K PN16 DN 200 250 250 250 300 300 300
30 K PN16 DN 250 250 300 300 350 350 350
20 K PN16 DN 300 300 350 400 400 400 450
For permiss. operating pressure 16
bar
Temperature spread 40 K PN25 DN 200 250 250 250 300 300 300
30 K PN25 DN 250 250 300 300 350 350 350
*3 4-hole version
Boiler connections
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Boiler size 3 4 5 6 7 8 9
20 K PN25 DN 300 350 350 400 400 400 450
Safety valve connector
For permiss. operating
pressure
6 bar PN16 DN 100 125 125 150 150 2 x
100
2 x 125
10 bar PN16 DN 80 100 100 100 125 125 150
16 bar PN40 DN 65 80 80 100 100 100 100
M82A
Boiler size 1 2 3 4 5 6 7
Boiler flow and return
For permiss. operating pres-
sure
6 bar PN16 DN 150 150 200 200 200 250 250
10 bar PN16 DN 150 150 200 200 200 250 250
16 bar PN25 DN – – 200 200 200 250 250
16 bar PN40 DN 150 150 – – – – –
Safety valve
For permiss. operating pres-
sure
6 bar PN16 DN 50 50 65*3 65*3 65*3 80 80
10 bar PN16 DN – – 50 50 65*3 65*3 65*3
10 bar PN40 DN 40 40 – – – – –
16 bar PN40 DN 32 40 40 40 50 50 65
Drain outlet
For permiss. operating pres-
sure
6 bar
PN40 DN 40 40 40 40 40 40 40
10 bar PN40 DN 40 40 40 40 40 40 40
16 bar PN40 DN 40 40 40 40 40 40 40
Tab. 9
M84B
Boiler size 3 4 5 6 7 8 9
Boiler flow and return
For permiss. operating pressure 6,
10 bar
Temperature spread 40 K PN16 DN 200 250 250 250 300 300 300
30 K PN16 DN 250 250 300 300 350 350 350
20 K PN16 DN 300 300 350 400 400 400 450
For permiss. operating pressure 16
bar
Temperature spread 40 K PN25 DN 200 250 250 250 300 300 300
30 K PN25 DN 250 250 300 300 350 350 350
20 K PN25 DN 300 350 350 400 400 400 450
Safety valve connector
For permiss. operating
pressure
6 bar PN16 DN 100 125 125 150 150 2 x
100
2 x 125
10 bar PN16 DN 80 100 100 100 125 125 150
16 bar PN40 DN 65 80 80 100 100 100 100
*3 4-hole version
Boiler connections (cont.)
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Danger
Risk of injury when opening pressurised boiler
flue connections.
Do not open boiler flue connections until they
are depressurised and have cooled down.
!Please note
Unsuitable water quality can damage the boiler
shell.
Only fill the boiler with water that complies with
the "Standard values for water quality" (see
service instructions).
H
C A B
GE F
Sample illustration (types M148, M64B, M84B). Stand-
ard delivery may vary subject to order.
ABoiler return connector
BBoiler flow connector
CSafety valve connector
DHigh limit safety cut-out – sleeve R ½
ETemperature controller – sleeve R ½
FControl equipment – sleeve R ½ (additional)
GDrain connector R 1 ½
HHole for equipotential bonding 7 13 mm
Sample illustration (types M62C and M82A). Standard
delivery may vary subject to order.
Note
Observe designation for boiler flow and boiler return
connectors on the boiler.
Note
Install all pipe connections free of load and torque
stress.
1. Thoroughly flush the system (especially when con-
necting the boiler to an existing system).
2. Connect all pipework.
Fitting the measuring and control equipment
Criteria for selecting measuring and control equipment:
■Boiler operating pressure
■Type of boiler operation:
–With constant supervision
–Without constant supervision
Installing the equipment
Manufacturer's installation instructions
Electrical connection of equipment
Connection and wiring diagram
Installing the pipework
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Preparing for the control unit installation
Vitocontrol boiler control unit as accessory: "Vitocontrol" technical documentation
Equipment for control and limitation
For boilers with Vitocontrol control panel: "Vitocontrol" technical documentation
Connections on the flue gas side
Danger
Leaks can result in poisoning through escaping
gas.
Check unused boiler apertures and gas lines for
tightness. Reseal if required.
Mounting the flue pipe
ØD
Ø10
2-3xØD
Fig. 13
1. Connect the flue outlet to the flue system using a
flue pipe, ensuring favourable flow characteristics.
2. Position the test port (approx. 10 mm 7) down-
stream of the flue outlet, at a distance of 2 to 3
times the flue pipe diameter.
3. Seal the flue pipe.
Note
Connect all flue pipes free of load and torque
stress. The flue pipe connections must be made
gas-tight.
4. Insulate the flue pipe.
Note
A flue gas flange with mating flange is optionally
available.
Flue pipe external diameter
Boiler size 1 2 3 4 5 6 7 8 9 A B C
M148*4 mm 192 242 242 272 346 400 450 500 550 600 650 –
M62C*5 mm 392 392 440 440 490 490 550 550 620 620 700 700
M64B*6 mm –790 790 890 990 990 1110 1110 –
M82A*7 mm 346 392 392 440 490 550 620 –
M84B*6 mm –790 790 890 990 990 1110 1110 –
*4 External
7 = internal 7 + 8 mm, for sizes 6 - B internal 7 + 10 mm
*5 External
7
= internal
7
+ 8 mm, for sizes 3 - C internal
7
+ 10 mm
*6 External
7
= internal
7
+ 10 mm
*7 External
7
= internal
7
+ 8 mm, for sizes 4 - 7 internal
7
+ 10 mm
Fitting the measuring and control equipment (cont.)
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Note on condensate drain
■Condensate will form in the flue system. The return
of this condensate must be prevented on site. Take
appropriate measures, e.g. install a condensate trap.
■Seal the condensate drain connectors (KOA) if they
are not used. They are designed for draining any
condensate collected during the start-up phase.
Fitting the sight glass
Fig. 14
Secure the sight glass to the connector without seal-
ant.
The use of the slide control must not skew the sight
glass.
!Please note
Hot surfaces can lead to burns.
Only open the slider in the sight glass for brief
inspection of the flame.
Observe occupational safety. Wear protective
clothing where necessary.
Installing the burner
Preparing the burner connection
If the additionally supplied burner plate was not pre-
drilled at the factory, drill the burner fixing holes into
the burner plate and cut out the aperture for the flame
head.
For correct burner operation, safeguard the required
flame head length.
Fitting the burner plate (if delivered separately)
Danger
Leaks can result in poisoning through escaping
gas.
Check unused boiler apertures and gas lines for
tightness. Reseal if required.
A B
Fig. 15
Installation information "Insulation for burner
entry point"
Connections on the flue gas side (cont.)
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Ø ab
CE
Fig. 16
a Max. flame head diameter
b Clearance
If clearance b > 50 mm, use insulation rings C, oth-
erwise use filler material E.
1. For burner connection, secure burner plate B to
the boiler flange with screws.
2. Secure the burner to the burner plate with screws.
Note
For differing dimensions, trim the cut-out in the
thermal insulation according to the flame head
diameter.
3. If required, fill the annular gap between burner
head and thermal insulation with heat resistant
filler material (standard delivery).
Note
Thermal insulation blocks and loose thermal insu-
lation are supplied either inside the reversing
chambers of the boiler doors or inside the flame
tube.
4. Close the boiler doors and inspection port at the
back of the boiler.
Installation information "Insulation for burner
entry point"
Burner operating and service instructions
Connection and wiring diagrams
Adjusting the burner
The information and values in the tables relate to the
following general conditions:
■O2 content in dry flue gas
–For natural gas: 3.0 % by vol.
–For EL fuel oil: 3.0 % by vol.
■Flow/return temperature: 80/60 °C
■100 % load
■Installation altitude: < 500 m above sea level
■Combustion air temperature: 25 °C
Applicable to M62C:
■O2 content in dry flue gas
–For natural gas: 2.1 % by vol.
–For EL fuel oil: 2.7 % by vol.
M148
Boiler size 1 2 3 4 5 6 7 8 9 A B
Rated heating output
110 °C
■For natural gas MW 0.65 0.85 1.10 1.40 1.80 2.30 2.90 3.50 4.20 5.00 6.00
■For EL fuel oil MW 0.65 0.85 1.10 1.40 1.80 2.30 2.90 3.50 4.20 5.00 6.00
Permiss. combustion
heating output 110 °C
■For natural gas MW 0.71 0.93 1.21 1.54 1.98 2.53 3.19 3.85 4.62 5.49 6.59
■For EL fuel oil MW 0.71 0.93 1.20 1.53 1.97 2.51 3.17 3.83 4.59 5.46 6.56
Flame tube dimensions
Diameter
■Flame tube, min.
internal 7d1 mm 678 726 799 847 895 966 1064 1139 1212 1310 1383
Installing the burner (cont.)
5672931

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Boiler size 1 2 3 4 5 6 7 8 9 A B
Flame tube length a mm 1500 1680 1860 2090 2250 2450 2650 2900 3300 3470 3700
Burner connections
■Max. flame head
7c mm 380 380 380 380 380 420 420 530 530 530 600
■Minimum flame
head length e mm 335 335 335 335 335 335 360 400 400 430 480
Combustion chamber
volume
Relative to flame tube
length a m30.55 0.70 0.94 1.19 1.43 1.85 2.42 3.02 3.88 4.76 5.66
Max. pressure drop on
the flue gas side, 110 °C
■For natural gas mbar 2.9 4.4 7.0 8.2 5.5 8.2 10.0 11.0 9.4 10.5 11.2
■For EL fuel oil mbar 2.5 3.9 6.2 7.1 4.8 7.2 8.9 9.6 8.1 9.0 10.1
Tab. 10
M62C
Boiler size 1 2 3 4 5 6 7 8 9 A B C
Rated heating output
110 °C
■For natural gas MW 2.30 2.60 2.90 3.20 3.60 4.20 4.50 5.20 6.00 6.75 8.00 8.80
■For EL fuel oil MW 2.30 2.60 2.90 3.20 3.60 4.20 4.50 5.20 6.00 6.75 8.00 8.55
Permiss. combustion
heating output 110 °C
■For natural gas MW 2.50 2.83 3.15 3.48 3.91 4.57 4.89 5.65 6.52 7.34 8.70 9.57
■For EL fuel oil MW 2.50 2.83 3.15 3.48 3.91 4.57 4.89 5.65 6.52 7.34 8.68 9.24
Flame tube dimen-
sions
Diameter
■Smooth
pipe, min.
internal
76 bar d1 mm 803 803 853 853 901 901 974 974 1064 1064 1143 1143
10 bar mm 797 797 845 845 893 893 968 968 1064 1064 1135 1135
16 bar mm 785 785 835 835 885 885 – – – – – –
■Corruga-
ted pipe,
internal
716 bar d1 mm – – – – – – 950 950 1050 1050 1125 1125
■Corruga-
ted pipe,
average
716 bar d2 mm – – – – – – 1000 1000 1100 1100 1175 1175
■Cone,
min. in-
ternal 7 f mm 617 617 667 667 717 717 792 792 892 892 971 971
Lengths a mm 2630 2630 2900 2900 3240 3240 3660 3660 4220 4220 4830 4830
g mm 800
Reversing chamber
depth
b mm 500
Burner connections
Adjusting the burner (cont.)
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Boiler size 1 2 3 4 5 6 7 8 9 A B C
■Max. flame head
7c mm 420 420 420 420 520 520 520 520 590 590 710 710
■Minimum flame
head length e mm 360
Combustion chamber
volume (average value)
■Flame tube m31.33 1.33 1.65 1.65 2.07 2.07 2.70 2.70 3.79 3.79 4.97 4.97
■Relative to flame tube
length a and reversing
chamber depth b m31.58 1.58 1.93 1.93 2.38 2.38 3.07 3.07 4.24 4.24 5.49 5.49
Max. pressure drop on
the flue gas side,
110 °C
■For natural gas mbar 8.5 8.9 9.7 10.4 12.5 14.1 13.3 15.0 16.5 17.2 13.2 12.3
■For EL fuel oil mbar 8.1 8.5 9.1 9.8 11.9 13.4 12.6 14.2 15.5 16.3 12.4 10.8
Tab. 11
M64B
Boiler size 3 4 5 6 7 8 9
Rated heating output
■For natural gas MW 10.00 12.00 14.00 16.00 18.00 20.00 21.50
■For EL fuel oil MW 9.12 10.37 11.61 13.09 14.17 16.02 16.90
Permissible combustion heating
output*8
■With natural gas for smooth pipe MW 10.87 13.04 15.22 17.39 19.57 21.33 –
■With natural gas for corrugated
pipe
MW 10.87 13.04 15.22 17.39 19.57 21.74 23.37
■With EL fuel oil for smooth pipe MW 9.81 11.08 12.41 13.75 15.08 16.41 –
■With EL fuel oil for corrugated
pipe
MW 10.40 11.67 13.00 14.00 15.67 17.00 18.00
Flame tube dimensions
Diameter
■Smooth pipe, in-
ternal 76 bar d1 mm 1196 1291 1385 1483 1581 1681 –
10 bar mm 1190 1281 – – – – –
■Corrugated
pipe, internal 76 bar d1 mm – – – – – – 1750
10 bar mm – – 1375 1475 1575 1675 1750
16 bar mm 1180 1275 1375 1475 1575 1675 1750
Flame tube length a mm 5325 5825 6225 6625 7050 7450 7700
Reversing chamber depth b mm 500
Burner connections
■Max. flame head 7 (op-
tional wear-resistant burn-
er entry point) c mm 710 810 910 910 1010 1100 1100
■Max. flame head 7
(standard version) c mm Can be adjusted subject to burner –
■Minimum flame head
length e mm 360
*8 In accordance with EN 12953, the internal diameter of the flame tube limits the maximum combustion heating output for oil
operation.
Adjusting the burner (cont.)
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Boiler size 3 4 5 6 7 8 9
Combustion chamber volume
(min. values)
■Flame tube m35.82 7.44 9.24 11.32 13.74 16.42 18.52
■Flame tube and reversing cham-
ber depth m36.37 8.08 9.99 12.17 14.71 17.52 19.72
Max. pressure drop on the flue
gas side
■For natural gas mbar 12.4 14.8 13.8 14.4 16.1 17.6 18.1
■For EL fuel oil mbar 8.9 9.4 8.0 7.7 8.2 9.3 9.1
M82A
Boiler size 1 2 3 4 5 6 7
Rated heating output 110 °C
■For natural gas MW 2.10 2.50 3.00 3.50 4.20 5.00 6.00
■For EL fuel oil MW 2.10 2.50 3.00 3.50 4.20 5.00 6.00
Rated heating output 120 °C
■For natural gas MW 2.10 2.50 3.00 3.50 4.20 5.00 6.00
■For EL fuel oil MW 2.10 2.50 3.00 3.50 4.20 5.00 6.00
Permiss. combustion heating output
110 °C
■For natural gas MW 2.28 2.72 3.26 3.80 4.57 5.44 6.52
■For EL fuel oil MW 2.28 2.72 3.26 3.80 4.57 5.44 6.52
Permiss. combustion heating output
120 °C
■For natural gas MW 2.28 2.72 3.26 3.80 4.57 5.44 6.52
■For EL fuel oil MW 2.28 2.72 3.26 3.80 4.57 5.44 6.52
Flame tube dimensions
Diameter
■Smooth pipe, min.
internal 710 bar d1 mm 856 906 981 1031 1081 1131 1206
■Corrugated pipe, in-
ternal 716 bar d1 mm – – – 1025 1075 1125 1200
■Corrugated pipe,
average 716 bar d2 mm – – – 1075 1125 1175 1250
■Cone, min. internal
7 f mm 690 740 811 911 911 1011 1086
Lengths a mm 2510 2740 3000 3240 3540 3860 4220
g mm 800
Reversing chamber depth b 500
Burner connections
■Max. flame head 7c mm 520 520 590 590 590 710 710
■Minimum flame head length e mm 360
Combustion chamber volume (aver-
age value)
■Flame tube m31.44 1.77 2.27 2.70 3.25 3.88 4.82
■Relative to flame tube length a and re-
versing chamber depth b m31.73 2.09 2.65 3.12 3.71 4.38 5.39
Max. pressure drop on the flue gas
side, 110 °C
Adjusting the burner (cont.)
5672931