FläktGroup MULTIMAXX HG Series User manual

MULTIMAXX®HG
OPERATION MANUAL

MultiMAXX HG Unit Type Code
FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 3
Unit Type Code
MultiMAXX Control Accessories
HG 2 4 . U E F T C B . A M D OSHG 0 . 000M ZHX.XX X X
Model size
2 = Model size 2
4 = Model size 4
Capacity stage
4 = Low capacity
5 = High capacity
Unit configuration
U = Recirculating-air operation
M = Mixed air unit
Heating medium
E = Natural gas (EG),
propane-butane (LPG)
Heat exchanger
F= High-temperature resistant steel
Regulation of heating capacity
P = Regulation of supply air temperature
(only with mixed-air units)
T = Regulation of room temperature
Unit configuration
B = Non-room-sealed firing
C = Room-sealed firing
Outlet
A = Outlet nozzle ceiling
B = Basis - wall
C = Secondary-air louvre, ceiling, manually adjustable
D = Motorized secondary-air louvre, ceiling, (230 V,
open/close)
K = Blank flange, pressure side
L = Air deflection louvre
P = Profile outlet
T = Gate nozzle
U = Secondary-air louvre, wall installation,
manual adjustment
V = Four sides, ceiling
W = Motorized secondary-air louvre, wall, (230 V, open/
close)
Z = Two-side basic ceiling outlet
O = Without louvre
Air side accessories
20 = Mixed-air module, type 1
21 = Mixed-air module, type 2
23 = Outside air blocking damper
25 = Flexible canvas connector
26 = Rectangular duct 150
27 = Rectangular duct 1000
28 = Duct bend 90°, symmetrical
29 = Duct bend 90°, asymmetrical
31 = Wall air-intake hood
32 = External weather grille
33 = Contact protection grille
34 = Roof duct, slanted roof
35 = Roof air intake hood
(38 = spare filter for roof air intake hood)
36 = Bag filter module
(39 = spare filter for the bag filter module)
37 = Mat filter module
(40 = spare filter for mat filter module)
49 = Roof duct with flat roof-duct base
51 = Frame for wall connection
52 = Flange (for recirculating-air units)
Ohne Auslass
Motor / speeds
AC Motor
A = 3x400V, 2-speed - low speed range, wide-blade fan,
for capacity stage (4)
B = 3x400V, 2-speed - high speed range, wide-blade fan,
for capacity stage (5)
D= 1x230V, 2-speed - low speed range, wide-blade fan,
for lower capacity stage (4) (only for BG2)
E = 1x230V, 2-speed - high speed range, wide-blade fan,
for capacity stage (5)
Q = 3x400V, 2-speed - low speed range, sickle-blade fan,
for capacity stage (4)
R = 3x400V, 2-speed - high speed range, sickle-blade fan,
for capacity stage (5) (only for BG4)
EC Motor
Y = 1x230V, continuous, sickle-blade fan
Z = 3x400V, continuous, sickle-blade fan
(only for BG4)
Electric equipment
M = Control system Multi (steel sheet box)
Unit casing
D = Heat exchanger in industrial design RAL 7000
Model size
2 = Model size 2
4 = Model size 4
Configuration / material
0 = Standard configuration
8 = Ecodesign (only for ZH#.25, 26, 35, 36, 38, 39 )
Actuators for louvers and mixed-air modules
0 = Actuator on site
1 = Manual
2 = Actuator 230 V, open/close
3 = Actuator 230 V, Open/Close + Poti
4 = Actuator 230 V, Open/Close + final position switch
5 = Actuator 230 V+ spring return
Filter class / electric equipment
0 = Without filter, without differential pressure switch
2 = G2/without differential pressure switch
3= G3 / without differential pressure switch (only for ZH#.37)
4 = G4/without differential pressure switch
5 = G2/with differential pressure switch
6= G3 / with differential pressure switch (only for ZH#.37)
7 = G4/with differential pressure switch
9 = G7/with differential pressure switch (only for ZH#.35, 36)
Suspensions
53 = Compact C
54 = Studio (for wall configuration)
55 = Modular (for wall configuration)
56 = Ceiling suspension
Modular ( ZH#. 550 # ) with accessories
0 = without accessories 7 = 25+23+51
1 = 25+20+51 8 = 25+36+23+51
2 = 25+36+20+51 9 = 25+37+23+51
3 = 25+37+20+51 A = 26+36
4 = 25+21+29+51 B = 26+37
5 = 25+36+21+29+51 C = 25+28 (+49...)
6 = 25+37+21+29+51 W = without unit accessories
with vertical outlet
Suspension ceiling ( ZH#. 560 # )
0 = Without threaded rod
1 = Threaded rod 1 m
2 = Threaded rod 2 m
3 = Threaded rod 3 m
Control panel, Control board
0.000M = Control panel Multi
(AC Motor)
0.EC0M = Control panel Multi
(EC Motor)
0.RDDO = Control board RDDO

Table of Contents MultiMAXX HG
4FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications
Unit Type Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
1 Safety and User Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1 Scope of the operation manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.2 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Safety-conscious work procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.4 Proper use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5 Safety regulations and codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.6 Modifications and changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.7 Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.8 Personnel selection and qualification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.1 Unit configuration and packaged content . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 Specification of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Functional description of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Unit dimensions and minimum mounting space . . . . . . . . . . . . . . . . . . . . 12
2.6 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.7 Specification for the Ecodesign Directive passed by the EU Commission
2016/2281 14
3 Shipping and Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
3.1 Shipping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2 Shipping and handling of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4 Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.1 Load-bearing capacity of the installation site . . . . . . . . . . . . . . . . . . . . . . 19
4.2 Ceiling mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.3 Wall mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4 Safety clearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.5 Unit mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.6 Installing the flue gas pipework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.7 Mounting examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
5 Electrical Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5.1 Electrical control box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.2 Connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.3 Multi operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
5.4 Connection actuator, mixed-air module, and blocking damper . . . . . . . . . 31
5.5 Connecting actuator for secondary-air louvre D and W . . . . . . . . . . . . . . 31
5.6 Connection for differential pressure switch . . . . . . . . . . . . . . . . . . . . . . . . 31
6 Gas Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
6.1 Gas distribution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
7.1 Initial commissioning - information for service companies . . . . . . . . . . . . 33

MultiMAXX HG Table of Contents
FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 5
8 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
8.1 General Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
8.2 Operation and adjustment of the units by means of the control panel
OSHG 0.000M (OSHG 0.EC0M) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
8.3 Adjustment of the mixed-air module . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
8.4 Adjustment of the secondary-air louvre . . . . . . . . . . . . . . . . . . . . . . . . . . .54
8.5 Differential pressure switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
8.6 Decommissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
9 Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
9.1 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
9.2 Quarterly maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
9.3 Semi-annual maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
9.4 Break-downs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
10 Disassembly and Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
10.1 Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
10.2 Recycling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59
11 Warranty Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
11.1 Authorized service companies for warranty and repairs in Germany . . . .60
11.2 Warranty certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61
EC DECLARATION OF CONFORMTI . . . . . . . . . . . . . . . . . . . . . 63
Original operation manual – Copyright note
Disclosing, copying, distributing or taking any action in reliance on the contents of this document is strictly prohibited without
express prior consent. Violations entail liability for any damages or other liability arising. All rights in relation to patents, utility
patents or design patents are reserved.

Safety and User Instructions MultiMAXX HG
6FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications
1 Safety and User Instructions
This is an original operation manual verified by the manufacturer.
MultiMAXX HG Air Heaters are developed and manufactured according to the current
state of technology and the recognized safety-specific standards and guidelines and
correspond to the EU Directive of Machinery.
MultiMAXX HG Air heaters are safe to operate and comply with high quality standards.
Future-oriented technology and pronounced operator and maintenance friendliness
were combined in this product series.
However, every unit heater can pose an unavoidable residual danger for the user or
third parties, or can lead to impairments of the unit or other objects. For this reason, it
is important to observe the safety regulations without fail. The unit and its maintenance
must be carried out according to all prevailing regulations and standards.
Failure to follow the safety precautions could result in death, serious injury, environ-
mental damage and/or considerable property damage.
Observing the safety instructions in the current operation manual will help avoid the
risks, ensure economical operation of the unit and let you enjoy the full benefits of the
product.
The safety aspects covered by this chapter are valid for the entire operation manual.
1.1 Scope of the operation manual
This operation manual provides critical information about the following:
–Shipping
– Mounting
– Installation
– Electrical connection
– Commissioning
–Operation
– Maintenance, cleaning and disposal
1.2 Symbols used
In these operating instructions, the following symbols are used for special text
passages:
– Indicates text paragraphs
•Indicates process instructions
Indicates process results.
The following names and symbols are employed in the operating instructions for the
safety notices:
NOTE!
You will find supplementary information on the use of the
MultiMAXX HG Unit Heater and its economical handling
RECYCLING!
This symbol is used to highlight instructions on proper reuse of packaging material
and disused assembly groups (separated according to recyclable materials).
WARNING: RISK OF ROTATING COMPONENTS!
This section specifies procedures and precautions for preventing personal injury
resulting from rotating unit components.
HAZARDOUS VOLTAGE!
This symbol indicates a risk of accident due to electric shock.

MultiMAXX HG Safety and User Instructions
FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 7
1.3 Safety-conscious work procedures
Observe the following instructions during installation, configuratoin, repair and mainte-
nance tasks:
Fluctuations or deviations of the supply voltage may not exceed the tolerance limits
specified in the technical data on the unit identification plate, otherwise function failures
and limit states cannot be excluded.
PERSONAL INJURY!
This section specifies procedures and precautions for preventing personal injury.
DANGER DUE TO OVERHEAD LOADS!
This symbol warns about personal injury and damage caused by overhead loads and
suspended heavy objects.
DANGER OF HOT SURFACES!
This section specifies procedures and precautions for preventing personal injury
resulting from contact with hot surfaces.
DANGER – SHARP CUTTING EDGES!
This section specifies procedures and precautions for preventing personal injury
resulting from cuts on thin metal fins.
RISK OF ACCIDENTS BY GAS EXPLOSION!
This section specifies particular information and prohibitions for avoiding personal
injury through gas explosions.
ENVIRONMENTAL DAMAGE!
This symbol warns about damage to the environment or refers to all existing national
environmental protection regulations.
EQUIPMENT DAMAGE!
This section specifies information and precautions for avoiding damages to the
MultiMAXX HG Unit Heater.
RISK OF DAMAGE DUE TO STATIC DISCHARGE!
This symbol precedes a warning of risks of damage to unit electronic components
due to static discharge.
HAZARDOUS VOLTAGE!
Disconnect all electric power to the unit and ensure the power cannot be inadvert-
ently switched on, earth, short-circuit, and block off all neighboring live parts. Non-
compliance can lead to death or serious injury.
RISK OF DAMAGE DUE TO STATIC DISCHARGE!
When doing connection and/or adjustment work on the MultiMAXX HG unit heater,
make sure that you statically discharge yourself before touching printed circuit
boards and electrical components.
WARNING: RISK OF ROTATING COMPONENTS!
Danger of injury from turning fan wheel Before performing any work on the unit,
ensure that the unit is isolated. Ensure that the unit is isolated and secured against
being energised at an appropriate point of the on-site power supply.

Safety and User Instructions MultiMAXX HG
8FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications
1.4 Proper use
The MultiMAXXHG unit heaters are used in industrial, warehouse, sales and exhibition
rooms, i.e. in areas which are protected against the influences of weather (including
assembly, temporary storage, and maintenance work). They serve for heating, venti-
lation and filtering of the room-/outside air.
The unit must be used according to Commission Regulation (EU) No 1253/2014.
In all areas which demand a room air-independent firing, the units are equipped with a
fresh-air supply (coaxial flue gas pipework can be optionally employed).
In all areas where there is the danger of negative pressure, it is absolutely necessary
to use units with a room air-independent configuration.
Filters, mixed-air and air intake modules, suspension sets, control units and control
devices can be supplied as optional accessories.
Proper use also stipulates the observance of the current operation manual as well as
adherence to all inspection and maintenance intervals specified by FläktGroup.
Improper use Any use other than that described above is considered improper.
The manufacturer/supplier is not liable for any damages arising from improper use.
The user alone bears the risk.
1.5 Safety regulations and codes
For the assembly of the electrical connection and gas connection, commissioning,
repair and maintenance work of MultiMAXX equipment, observe the respective safety
regulations and standards which are valid in the respective countries and generally
recognized rules of technology.
1.6 Modifications and changes
Do not attempt to modify, add components, or convert the MultiMAXXunit heater in any
way.
Changes or modifications of the unit heater will invalidate the CE conformity and render
all warranty claims as null and void.
1.7 Spare parts
Only original FläktGroup spare parts are allowed, since FläktGroup is not liable for
damages if third-party-spare parts are used.
1.8 Personnel selection and qualification
PERSONAL INJURY!
The MultiMAXX Air Heaters may not be operated:
– in explosion risk areas
– in rooms with high dust or moisture content
– in rooms with strong electromagnetic fields
– in rooms with aggressive atmosphere
NOTE!
Every person who works on the MultiMAXX Unit Heater must have completely read
and understood this entire operating manual.
Assembly/maintenance/repair may only be carried out by trained workers observing
the valid regulations and standards.
The commissioning may only be carried out by specialists briefed in the prevailing
standards and regulations and who have installed the complete unit.
The electrical installation may only be carried out by skilled electricians observing
the valid regulations.
The gas installation may only be carried out by trained gas specialists observing
the valid regulations.
All skilled staff must be able to assess the entrusted work and must be able to rec-
ognize and avoid all associated dangers.

MultiMAXX HG Specifications
FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 9
2 Specifications
2.1 Unit configuration and packaged content
Fig. 2-1: Technical Description MultiMAXX HG
Pos. 1a: Wide-blade fan (optional)
Pos. 1b: Sickle-blade fan (optional)
Pos. 2: Fan section with air inlet nozzle
Pos. 3: Electrical control box for Multi Operation (metal sheet)
Pos. 4: Heat exchanger
Pos. 5: Heat exchanger casing
Pos. 6: Reflection plates
Pos. 7: Flue pipe fitting of air intake
Pos. 8: Flue gas fitting for smoke exhaust
Pos. 9: Gas burner
Pos. 10: Gas burner casing
Pos. 11: Outlet (optional)
Pos. 11: Thermal fuse
11
10
9
78
4
2
1b
1256
1a
3

Specifications MultiMAXX HG
10 FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications
Various unit parts indicated in Fig. 2-1 are specified in detail as follows.
Wide-blade fan (Pos. 1a)
Axial fan with external rotor motor and integrated contact protection grille, aluminum
wide blade, balanced by the manufacturer, maintenance-free with moisture proof
motor wired ready for connection in the terminal box.
Protection class IP 54, heat class F, external thermal contact,
in 2 variants 400 V, 50 Hz and 2 variants 230 V, 50 Hz.
Sickle-blade fan (Pos. 1b)
Axial fan with external rotor AC or EC motor and integrated contact protection grille.
Sickle blade, balanced by the factory, maintenance-free with moisture-proof motor and
wired to the terminal box.
Protection class IP 54, heat class F, external thermal contact,
in 2 variants 400 V, 50Hz.
Fan section with air inlet nozzle (Pos. 2)
The fan section is made of galvanized metal sheet and equipped with 8 x M8 rivet nuts
for the suspension of the unit.
Electrical control box for regulation (Pos. 3)
Steel sheet terminal box contains regulation circuit board with terminal block.
Heat exchanger (Pos. 4)
The heat exchanger is simple and robust, furnished with a combustion chamber and
integrated retractions, thereby ensuring an optimal heat transfer between the combus-
tion chamber and the air to be warmed. The heat exchanger is made of high-tempera-
ture resistant steel.
Heat exchanger casing (Pos. 5)
The heat exchanger casing is assembled by the manufacturer and made of galvanized
steel sheet, painted in RAL 7000.
Gas burner (Pos. 9)
The fully automatic gas-pressure burner provides for the temperature rise in the heat
exchanger. The burner can be used for the following gas configurations: natural gas,
gas propane-butane, only propane, and only butane.
Outlet (Pos. 11)
The air outlets direct the warmed air in the desired direction.
2.2 Specification of material
Unit part Material
Fan with contact protection grille Aluminum-metal mix + diverse materials
Fan section Galvanized metal sheet
Electric cabinet made of galvanized steel sheet + diverse materials.
Heat exchanger High-temperature resistant steel
Unit casing made of painted steel sheet RAL 7000
Outlet The frame is made of galvanized painted sheet metal or galvanized steel
sheet. The leaves are made of galvanized steel sheet or aluminum profiles
Gas burner Aluminum-metal mix + diverse materials
Tab. 2-1: Specification of material

MultiMAXX HG Specifications
FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 11
2.3 Functional description of the unit
Die gas-unit heaters MultiMAXX HG are produced in 2 model sizes with 2 capacity
sizes each for wall or ceiling mounting. The basis of the unit is formed by a heat
exchanger with a robust combustion chamber and integrated retractions, assuring an
optimal heat transfer between the combustion chamber and the air to be warmed.
The heat exchanger is installed in a thin-walled high temperature-resistant steel casing
(RAL 7000).
The 4 M8 rivet nuts on each side of the fan module are for mounting the unit on the
ceiling or wall.
The back side of the unit is furnished with a 2-speed axial AC or EC fan with integrated
contact protection grille. The thermal contact is guided out and wired to the terminal
box. A flange can be mounted on the fan module of the unit, which permits the connec-
tion of air-side accessories.
An air outlet is mounted on the discharge side of the unit, ensuring the regulation of the
air direction and air throw of the warmed air compared to the position of the unit in the
room. The outlet is made of several selectable types (see unit type code on page 3)
The warming of the heat exchanger is ensured by a fully automatic Premix burner. The
burner can process the following gases: natural gas, propane-butane gas, only pro-
pane and only butane.
2.4 Operating conditions
Operating temperature 0°C to +40°C
Operating voltage 3 x 400 V, or 1 x 230 V~ 50 Hz
Protection class IP 40 as per EN 60 529
Fan power consumption see unit identification plate
Class of the gas burner: I2R - natural gas (NG)
I3R - propane-butane (PB), propane (P),
butane (B)
Class NOX: see Tab. 2-2
Variant types of the exhaust installation: B23, C53, C13, C23 ,C33 (as per EN 1020)
Gas burner input pressure of the heating medium:
- natural gas 2 ±0.2 kPa
- propane/butane 3 ±0.3 kPa
Max. power consumption: ca. 150 W (see unit plate)
Operating voltage: 1 x 230 V~ 50Hz
The unit heaters MultiMAXX may only be operated under the conditions (apart from
temperature) described in Chapter 3.3.
For the operation of the MultiMAXX heating units, sufficient air ventilation of the area
must be ensured without fail.
NOTE!
All other important data on dimensions, weights, connections, sound power etc. are
provided in the "Data and Facts about the MultiMAXX HG Unit Heater".
Unit type Concentration NOXClass NOX
ppm mg/kWh mg/m3
HG 24 15 - 22 28 - 40 28 - 41 5
HG 25 20 - 22 36 - 40 38 - 41 5
HG 44 25 - 27 45 - 50 47 - 53 5
HG 45 25 - 40 45 -71 47 - 75 4
Tab. 2-2: Specification of the NOX class