FläktGroup MULTIMAXX HG Series, MULTIMAXX HG 24, MULTIMAXX HG 25, MULTIMAXX HG 45, MULTIMAXX HG 44 Operation Manual

MULTIMAXX

OPERATION MANUAL

MultiMAXX HG Unit Type Code

H G 2 4 . U E F T C B . A M D OSHG 0 . 000M Z HX.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

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 ceili ng 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)

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 config uration 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

Unit Type Code

MultiMAXX Control Accessories

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Table of Contents MultiMAXX HG

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

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MultiMAXX HG Table of Contents

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.

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Safety and User Instructions MultiMAXX HG

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, environmental 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.

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).

The following names and symbols are employed in the operating instructions for the safety notices:

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.

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MultiMAXX HG Safety and User Instructions

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.

1.3 Safety-conscious work procedures

Observe the following instructions during installation, configuratoin, repair and maintenance tasks:

HAZARDOUS VOLTAGE!

Disconnect all electric power to the unit and ensure the power cannot be inadvertently switched on, earth, short-circuit, and block off all neighboring live parts. Noncompliance 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.

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.

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Safety and User Instructions MultiMAXX HG

1.4 Proper use

The MultiMAXX HG 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, ventilation 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.

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

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 MultiMAXX unit 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

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 recognize and avoid all associated dangers.

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MultiMAXX HG Specifications

125

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

FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 9

Specifications MultiMAXX HG

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 combustion chamber and the air to be warmed. The heat exchanger is made of high-temperature 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

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MultiMAXX HG Specifications

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 connection 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 propane 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: I

Class NO

Variant types of the exhaust installation: B

Gas burner input pressure of the heating medium:

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".

- natural gas (NG)

- propane-butane (PB), propane (P),

butane (B)

: see Tab. 2-2

23, C53

, C13, C

23 ,C33

(as per EN 1020)

- natural gas 2 ±0.2 kPa

- propane/butane 3 ±0.3 kPa

Unit type Concentration NO

ppm mg/kWh mg/m

HG 24 HG 25 HG 44 HG 45

Tab. 2-2: Specification of the NOX class

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15 - 22 28 - 40 28 - 41 5 20 - 22 36 - 40 38 - 41 5 25 - 27 45 - 50 47 - 53 5 25 - 40 45 -71 47 - 75 4

Class NOX

Specifications MultiMAXX HG

Minimum mounting space for installation and maintenance

Connection of the unit to the gas mains by means of accessory article # ZHG.00xx with internal screw thread R 3/4" (without accessory external screw thread R 1/2"- within the unit).

2.5 Unit dimensions and minimum mounting space

Fig. 2-2: Unit dimensions MultiMAXX HG

Dimension / BG

A [mm] 918 1206 B [mm] 701 954 C [mm] 340 370 D [mm] 80 100 E (for fan A, B, D, E) [mm] 81 112 E (for fan R) [mm] -66 E (for fan Y) [mm] 65 53 E (for fan Z) [mm] -53 F [mm] 110 75 G [mm] 514 802 H [mm] 300 400 P [mm] 222,5 288 R [mm] 126 195 S [mm] 352 424

Tab. 2-3: Unit dimensions MultiMAXX HG (for Fig. )

2 4

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MultiMAXX HG Specifications

2.6 Specifications

Type

Thermal

output

A - 3 ~ 400 V, AC Motor, 2-speed (low speed range)

HG24 15 ÷ 25

HG44 25 ÷ 45

B - 3 ~ 400 V, AC Motor, 2-speed (high speed range)

HG25 20 ÷ 30

HG45 40 ÷ 60

D - 1~ 230V, AC Motor, 2-speed (low speed range)

HG24 15 ÷ 25

E - 1~ 230V, AC Motor, 2-speed (high speed range)

HG25 20 ÷ 30

HG45 40 ÷ 60

R - 3 ~ 400 V, AC Motor, 2-speed (high speed range)

HG45 40 ÷ 60

Y - 1~ 230V, EC Motor, 3-speed

HG24 15 ÷ 25

HG25 20 ÷ 30

HG44 25 ÷ 45

HG45 40 ÷ 60

Z - 3 ~ 400 V, EC Motor, 3-speed

HG44 25 ÷ 45

HG45 40 ÷ 60

Speed Air flow

range

[kW] [min-1][m3/h] [V] [A] [kW] [V] [dB(A)] [m] [m] [m] [kg]

710 2395

910 2825

500 5210 0,78 0,24 64 5,1 6,7 7,9

650 6725 1,11 0,36 70 6,0 7,9 10,2

890 3085

1270 4035

740 8065 2,02 0,63 75 6,8 8,9 12,3

910 9475 2,04 0,78 79 7,6 9,9 14,4

460 1705

890 2790

780 2820

1210 4105

700 8455 3,93 0,67 77 7,0 9,2 12,9

910 9555 3,71 0,83 82 7,6 10,0 14,5

650 8020

870 10425

670 1890

805 2280

945 2665

1285 3735

1600 4690

505 5260

590 5955

670 7065

785 8295

925 9840

1050 11005

505 5260

590 5955

670 7065

785 8295

925 9840

1050 11005

rate

Fan

voltage

3x400

1x230

3x400

1x230

3x400

Fan max.

power

consumption

0,40 0,13

0,57 0,19 66 7,1 9,2 13,5

0,59 0,27

0,83 0,38 74 9,0 11,7 19,3

0,79 0,12

0,89 0,21 66 7,0 9,1 13,3

1,88 0,26

2,04 0,43 74 9,1 11,8 19,6

1,87 0,72

2,72 1,08 79 8,1 10,6 15,8

0,45 0,09

0,51 0,11

0,61 0,13

0,95 0,19

1,12 0,23

1,34 0,29

0,64 0,14

1,03 0,23

1,72 0,39

2,23 0,50

2,92 0,64

3,94 0,89

0,77 0,19

0,88 0,23

1,01 0,29

1,75 0,50

2,18 0,64

2,82 0,89

Fan max.

current

consumption

Burner

voltage

1x230

Sound

power

Air throw

(louvre B)

63 6,4 8,3 11,4

69 7,5 9,8 14,7

55 5,1 6,6 8,1

66 7,1 9,2 13,5

72 6,8 8,9 12,2

61 5,4 7,0 9,0

64 6,1 8,0 10,9

68 6,8 8,9 12,7

76 8,6 11,1 17,8

82 10,0 13,0 22,4

61 5,1 6,7 8,0

65 5,6 7,3 9,1

69 6,2 8,2 10,7

73 7,0 9,1 12,6

77 7,8 10,2 15,0

81 8,4 11,0 16,7

61 5,1 6,7 8,0

65 5,6 7,3 9,1

69 6,2 8,2 10,7

73 7,0 9,1 12,6

77 7,8 10,2 15,0

81 8,4 11,0 16,7

Air throw

(louvre U,

Suspension

(louvre C, D)

height

Weight

with burner

without

louvre

112

Tab. 2-4: Technische Beschreibung

FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 13

Specifications MultiMAXX HG

2.7 Specification for the Ecodesign Directive passed by the EU Commission 2016/2281

The values presented in the Tab. 2-5 below are provided to ensure the implementation of the EU Directive 2016/2281. This Directive sets the framework for the requirements to the environmentally-friendly design of energy-related products such as air heaters, air coolers, units for air cooling in industrial processes with high operating temperatureand fan coil units.

Information to identify the models

B1 warm air heater: no

C2 warm air heater: no

C4 warm air heater: no

Type of fuel: gas

Capacity Useful efficiency Other items

nom

Model size

HG24.######.A## 21,7 13,8 87,8 93,2 0,0 0,0 40 94,6 84,5 0,043 0,030 0,008

HG24.######.D## 21,7 13,8 87,8 93,2 0,0 0,0 40 91,9 82,0 0,043 0,030 0,008

HG24.######.Y## 21,7 13,8 87,8 93,2 0,0 0,0 40 92,6 82,7 0,043 0,030 0,008

HG25.######.B## 25,6 18,0 86,6 90,5 0,0 0,0 40 94,2 81,3 0,057 0,034 0,008

HG25.######.E## 25,6 18,0 86,6 90,5 0,0 0,0 40 93,7 80,9 0,057 0,034 0,008

HG25.######.Y## 25,6 18,0 86,6 90,5 0,0 0,0 40 93,5 80,7 0,057 0,034 0,008

HG44.######.A## 39,7 20,7 94,6 96,0 0,0 0,0 50 95,9 90,0 0,098 0,055 0,008

HG44.######.Y## 39,7 20,7 94,6 96,0 0,0 0,0 50 95,9 89,9 0,098 0,055 0,008

HG44.######.Z## 39,7 20,7 94,6 96,0 0,0 0,0 50 95,9 89,9 0,098 0,055 0,008

HG45.######.B## 52,7 33,0 91,1 95,2 0,0 0,0 71 95,8 87,9 0,140 0,070 0,008

HG45.######.E## 52,7 33,0 91,1 95,2 0,0 0,0 71 96,0 88,0 0,140 0,070 0,008

HG45.######.R## 52,7 33,0 91,1 95,2 0,0 0,0 71 95,8 87,9 0,140 0,070 0,008

HG45.######.Y## 52,7 33,0 91,1 95,2 0,0 0,0 71 96,0 88,1 0,140 0,070 0,008

HG45.######.Z## 52,7 33,0 91,1 95,2 0,0 0,0 71 96,0 88,1 0,140 0,070 0,008

Unit code

rated,h

Rated heating capacity

[kW] [kW] [%] [%] [%] [kW]

min

Minimum capacity

Useful efficiency at rated

heating capacity ƞ

Useful efficiency at

minimum capacity ƞ

env

Envelope loss factor

ign

Ignition burner power

consumption P

Emissions of nitrogen

oxides NOxEmission efficiency ƞ

[mg/kWh

input energy

(GCV)]

s,flow

[%] [%] [kW] [kW] [kW]

s,h

Seasonal space heating

energy efficiency ƞ

Electric power

consumption

elmax

At rated heating capacity

Tab. 2-5: Values according to the EU Directive 2016/2281

elmin

At minimal capacity

In standby mode

elsb

14 FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications

MultiMAXX HG Specifications

2.8 Air side accessories

The following accessory items can be delivered for the MultiMAXX HG Unit Heater:

Description Unit Type

Design

Code

Mixed-air module, type 1 ZH#.200# Outside air and recirculating air 90° displaced; galvanized metal sheet, Al

profile fins

Mixed-air module, type 2 ZH#.210# Outside air and recirculating air 90° displaced; galvanized metal sheet, Al

profile fins

Outside air blocking damper ZH#.230# Outside air feed; galvanized metal sheet, Al profile fins

Flexible canvas connection ZH#.2500 Elastic spacer, max. overall length 150 mm, steel sheet, plastic

Rectangular duct 150 ZH#.2600 Spacer, overall length 150 mm, steel sheet

Rectangular duct 1000 ZH#.2700 Spacer, overall length 1000 mm, steel sheet

Duct bend 90°, symmetrical ZH#.2800 Air duct with surrounding mounting frame, made of galvanized steel sheet

Duct bend 90°, asymmetrical ZH#.2900 Air duct with surrounding mounting frame, made of galvanized steel sheet

Wall air-intake hood ZH#.3100 Protection against rain with bird screen, made of galvanized steel sheet

External weather grill ZH#.3200 Protection against rain with bird screen, made of galvanized steel sheet

Contact protection grille ZH#.3300 End grille for accessories

Duct through slanted roof ZH#.3400 Air duct for a connection to the roof air-intake hood, made of galvanized steel

sheet

Roof air-intake hood ZH#.350# Duct flange with or without bag filter element, made of painted galvanized

steel sheet (RAL 9002)

Spare filter for air intake hood, roof

Bag-filter module ZH#.360# With filter G2 and G4 made of galvanized steel sheet

Spare filter for bag filter module

Mat-filter module

Spare filter for mat filter module

Roof duct with flat roof-duct base ZH#.4900 made of plastic and galvanized steel sheet

Frame for wall connection ZH#.5100 For connection of the air duct to the wall opening, made of galvanized steel

Terminating flange, pressure side ZH#.5200 For connecting the suction side accessories (only recirculating-air unit) made

Suspension type compact C ZH#.5300 For the suspension of a recirculating-air unit, wall/ceiling version; made of

Suspension type Studio ZH#.5400 For the suspension of a recirculating-air unit, only wall version;

Modular type suspension ZH#.550# For the suspension of a circulating/mixed-air unit in wall version or a recircu-

Ceiling suspension ZH#.5600

Tab. 2-6: Air side accessories

ZH#.3802 ZH#.3804 ZH#.3808

ZH#.3902 ZH#.3904 ZH#.3908

ZH#.370# With filter G2 and G4 made of galvanized steel sheet

ZH#.4002 ZH#.4003 ZH#.4004

ZH#.5601 ZH#.5602 ZH#.5603

Filter G2 Filter G4 Filter F7

with or without differential pressure switch

Filter G2 Filter G4 Filter F7

with or without differential pressure switch

Filter G2 Filter G3 Filter G4

sheet

of galvanized steel sheet

galvanized steel sheet

made of galvanized steel sheet

lating-air unit in ceiling version; made of galvanized steel sheet

Attachment without threaded rod, made of galvanized steel sheet with threaded rod 1 m - M10; made of galvanized steel sheet with threaded rod 2 m - M10; made of galvanized steel sheet with threaded rod 3 m - M10; made of galvanized steel sheet

NOTE!

Detailed data on air side accessories provided in the "Data and Facts

of MultiMAXX HG".

FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 15

Specifications MultiMAXX HG

2.9 Accessories - exhaust gas lines, flue gas pipework

The following accessory items can be delivered for the unit heater MultiMAXX HG:

Description Type Dimensions - configuration

Pipe with sleeve ZHG.3780 Diameter 80 mm, length 0.22 m, Al Pipe with sleeve ZHG.3710 Diameter 100 mm, length 0.22 m, Al Pipe with sleeve ZHG.3880 Diameter 80 mm, length 0.17 m, Al Pipe with sleeve ZHG.3810 Diameter 100 mm, length 0.17 m, Al Pipe with sleeve ZHG.3980 Diameter 80 mm, length 0.31 m, Al Pipe with sleeve ZHG.3910 Diameter 100 mm, length 0.35 m, Al Pipe with sleeve ZHG.4080 Diameter 80 mm, length 0.5 m, Al Pipe with sleeve ZHG.4010 Diameter 100 mm, length 0.5 m, Al Pipe with sleeve ZHG.4180 Diameter 80 mm, length 1 m, Al Pipe with sleeve ZHG.4110 Diameter 100 mm, length 1 m, Al Pipe with sleeve ZHG.4280 Diameter 80 mm, length 2 m, Al Pipe with sleeve ZHG.4210 Diameter 100 mm, length 2 m, Al Coaxial pipe with sleeve ZHG.7080 Diameter 80/125 mm, length 0.5 m, Al Coaxial pipe with sleeve ZHG.7010 Diameter 100/150 mm, length 0.5 m, Al Coaxial pipe with sleeve ZHG.7180 Diameter 80/125 mm, length 1 m, Al Coaxial pipe with sleeve ZHG.7110 Diameter 100/150 mm, length 1 m, Al Coaxial pipe with sleeve ZHG.7280 Diameter 80/125 mm, length 2 m, Al Coaxial pipe with sleeve ZHG.7210 Diameter 100(150 mm, length 2 m, Al Elbow fitting 90° with sleeve ZHG.4380 Diameter 80 mm, metal mixture, Al Elbow fitting 90° with sleeve ZHG.4310 Diameter 100 mm, metal mixture, Al Coaxial elbow fitting 90° with sleeve ZHG.7380 Diameter 80/125 mm, metal mixture, Al Coaxial elbow fitting 90° with sleeve ZHG.7310 Diameter 100/150 mm, metal mixture, Al Elbow fitting 45° with sleeve ZHG.4480 Diameter 80 mm, metal mixture, Al Elbow fitting 45° with sleeve ZHG.4410 Diameter 100 mm, metal mixture, Al Coaxial elbow fitting 45° with sleeve ZHG.7480 Diameter 80/125 mm, metal mixture, Al Coaxial elbow fitting 45° with sleeve ZHG.7410 Diameter 100/150 mm, metal mixture, Al T-fitting 45° with a condensate container ZHG.4580 Diameter 80 mm, Al T-fitting 45° with a condensate container ZHG.4510 Diameter 100 mm, Al T-fitting with sleeve ZHG.4680 Diameter 80 mm, Al T-fitting with sleeve ZHG.4610 Diameter 100 mm, Al Condensate container ZHG.4780 Diameter 80 mm, Al Condensate container ZHG.4710 Diameter 100 mm, Al Pipe with sleeve and with condensate drain ZHG.4880 Diameter 80 mm, Al Pipe with sleeve and with condensate drain ZHG.4810 Diameter 100 mm, Al Windproof hood (wall) ZHG.4980 Diameter 80 mm, Al Windproof hood (wall) ZHG.4910 Diameter 100 mm, Al Coaxial windproof hood (wall) ZHG.7980 Diameter 80/125 mm, Al Coaxial windproof hood (wall) ZHG.7910 Diameter 100/150 mm, Al Roof air-intake hood ZHG.5080 Diameter 80 mm, Al Roof air-intake hood ZHG.5010 Diameter 100 mm, Al Coaxial weatherproof hood (ceiling) ZHG.9080 Diameter 80/125 mm, Al Coaxial weatherproof hood (ceiling) ZHG.9010 Diameter 100/150 mm, Al Flexi - pipe with sleeve - intake ZHG.5180 Diameter 80 mm, max. length 1 m. Al Flexi - pipe with sleeve - intake ZHG.5110 Diameter 100 mm, max. length 1 m. Al Flexi - pipe with sleeve - draft ZHG.5280 Diameter 80 mm, max. length 1 m. Al Flexi - pipe with sleeve - draft ZHG.5210 Diameter 100 mm, max. length 1 m. Al Connecting piece ZHG.9380 Diameter 80/125 mm, Al Connecting piece ZHG.9310 Diameter 100/150 mm, Al Reducer ZHG.5480 Diameter 80/100 mm, Al Oversize sleeve ZHG 5680 Diameter 80 mm, rubber Oversize sleeve ZHG 5610 Diameter 100 mm, rubber Oversize sleeve ZHG 9680 Diameter 125 mm, rubber Oversize sleeve ZHG 9610 Diameter 150 mm, Al Roof duct for flat roof ZHG.5710 For the flue gas pipework diameter 80, 100 and 125 mm, plastic Roof duct for flat roof ZHG.9710 For the flue gas pipework diameter 150 mm, Al Duct through slanted roof ZHG.5810 For the flue gas pipework diameter 80, 100 and 125 mm, plastic Chimney collar for the roof duct ZHG.5980 For the flue gas pipework diameter 80 mm, plastic Chimney collar for the roof duct ZHG.5910 For the flue gas pipework diameter 100 mm, plastic Chimney collar for the roof duct ZHG.9980 For the flue gas pipework diameter 125 mm, plastic Set with 45° T-fitting ZHG.6080 Diameter 80/125 mm, Al Set with 45° T-fitting ZHG.6010 Diameter 100/150 mm, Al Set with 90° T-fitting ZHG.6180 Diameter 80/125 mm, Al Set with 90° T-fitting ZHG 6110 Diameter 100/150 mm, Al Set D90L ZHG.6380 Diameter 80/125 mm, Al Set D90L ZHG.6310 Diameter 100/150 mm, Al Horizontal installation set ZHG 6280 Diameter 80/125 mm, Al Horizontal installation set ZHG 6210 Diameter 100/150 mm, Al Pressure-side hose R 3/4" ZHG.0040 Length 0,4 m Pressure-side hose R 3/4" ZHG.0070 Length 0.7 m Pressure-side hose R 3/4" ZHG.0010 Length 1 m

Tab. 2-7: Accessories of the flue gas pipework and gas distribution

NOTE!

All exhaust gas conducting parts contain silicon gaskets (upon request, also seals without silicon can be delivered). Detailed data on the flue gas pipework accessories

can be found in the "Data and Facts of MultiMAXX HG".

16 FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications

MultiMAXX HG Shipping and Storage

3 S hipping and Storage

3.1 Shipping

The notices of the manufacturer must be taken into account for shipping and storage.

NOTE!

• After unpacking the heating unit, the shipment must be examined for correctness

and completeness on the basis of the delivery note.

• Ship and store unit heaters in original packing!

EQUIPMENT DAMAGE!

• After shipment, check to make sure that the unit is not damaged.

NOTE!

Incorrectly delivered quantities or damages caused by shipping must be entered immediately in the shipping voucher, or possibly the goods should not be accepted and the manufacturer or supplier immediately informed.

3.2 Shipping and handling of the unit

• Attach lifting gear to the designated points of the assembly unit.

Only lifting gear with sufficient load carrying capacity is allowed.

DANGER DUE TO OVERHEAD LOADS!

Do not move air heaters over people.

DANGER – SHARP CUTTING EDGES!

Use personal protective gear such as safety gloves, footwear and protective clothes during transport.

PERSONAL INJURY!

Do not use damaged transport devices. Air heaters can only be transported with a fork-lift truck if they are placed on a pallet. Pay special attention to equal weight distribution.

Fig. 3-1: Transport of the unit MultiMAXX HG

FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 17

Shipping and Storage MultiMAXX HG

3.3 Storage

Protect MultiMAXX HG Air Heaters against moisture, soiling (dust and sand) and sun

/ radiant heat.

Store only in areas protected from weather influences, mildews, rodents, and vibrations.

The unit heater or the regulator and other accessories may not be stored or operated in areas with salty fog .

NOTE!

Allowable storage conditions: Air temperature: -15 °C to +40 °C Air humidity: max. 80% without condensation

18 FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications

MultiMAXX HG Mounting

Suspension height

4 Mounting

NOTE!

When mounting the MultiMAXX HG units, observe the safety regulations and stand-

ards valid in the respective countries and the generally recognized rules of technology.

4.1 Load-bearing capacity of the installation site

NOTE!

The installation site must be suited as a durable and vibration-free weight bearer of the unit heater, and be checked by a structural engineer or architect if necessary.

2 x 4 rivet nuts M8 on the sides of the fan module are provided for mounting the sus-

pension of the MultiMAXX HG Unit Heater (see Fig. 2-2). The fixing material is

included with the suspensions.

Unused M8 rivet nut openings should be closed with M8 screws from the transport securing device.

4.2 Ceiling mounting

Plan the suspension height, unit spacing (see Fig. 4-2) and minimum spacing to the ceiling (see Fig. 4-1).

PERSONAL INJURY!

The minimum permissible height above the floor is 2.7 m.

NOTE!

We recommend that the suspension height of the unit from the floor to the lower edge of the air outlet be selected in such a way (see Fig. 4-1) that two m above the floor in the work area the air velocity is 0.2 m/s .

Fig. 4-1: Suspension height for ceiling mounting

FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications 19

Mounting MultiMAXX HG

6 - 12 m

3 - 6 m

Max. air throw

Minimum ceiling spacing H (see Fig. 4-1)

Provide a minimum distance to ceiling to allow sufficient air circulation and ensure adequate access for maintenance.

Model size 2 4

Spacing H [mm] 300 400

Max. suspension height

The maximum suspension height for the ceiling mounting varies depending on the discharge temperature, lower speed stages and less air volume flow (results from the pressure loss of the accessory or external pressure loss).

Examples of the mounting height for the respective types are listed in following table (Tab. 2-4).

Unit spacing for ceiling mounting (see Fig. 4-2)

In order to achieve a favorable air distribution pattern of the occupied zone, we recommend the following unit spacing:

4.3 Wall mounting

Fig. 4-2: Unit spacing for ceiling mounting

Example of ceiling mounting with mixed-air module and ceiling suspension (ZHx.5602) see Fig. 4-8

Please observe: minimum suspension height, air jet direction of discharge, unit spacing among each other (see Fig. 4-4) and minimum spacing to the wall (see Fig. 4-3).

PERSONAL INJURY!

The minimum permissible height above the floor is 2.7 m.

Fig. 4-3: Air throws with wall mounting

20 FläktGroup DC-2011-0141-GB 2018-05/R5 • Subject to modifications

+ 44 hidden pages

FläktGroup MULTIMAXX HG Series, MULTIMAXX HG 24, MULTIMAXX HG 25, MULTIMAXX HG 45, MULTIMAXX HG 44 Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Unit Type Code

1 Safety and User Instructions

1.1 Scope of the operation manual

1.2 Symbols used

1.3 Safety-conscious work procedures

1.4 Proper use

1.5 Safety regulations and codes

1.6 Modifications and changes

1.7 Spare parts

1.8 Personnel selection and qualification

2 Specifications

2.1 Unit configuration and packaged content

2.2 Specification of material

2.3 Functional description of the unit

2.4 Operating conditions

2.5 Unit dimensions and minimum mounting space

2.6 Specifications

2.7 Specification for the Ecodesign Directive passed by the EU Commission 2016/2281

3 S hipping and Storage

3.1 Shipping

3.2 Shipping and handling of the unit

3.3 Storage

4 Mounting

4.1 Load-bearing capacity of the installation site

4.2 Ceiling mounting

4.3 Wall mounting