Lersen ALFA 35 ECO User Instructions

Brand: Lersen

Model: ALFA 35 ECO

Category: Power heat guns

Type: User Instructions

ALFA

Gas-red Air Heaters

User Instructions

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

List of Contents

Introduction............................................................................................................3

General Precautions ................................................................................................3

General User Instructions........................................................................................4

Warranty .................................................................................................................4

Installation in General ............................................................................................4

Installation Rules ....................................................................................................4

Readiness Conditions for Commissioning of a Reserved Lersen Gas-red

Equipment ..............................................................................................................5

LERSEN FlexiDrive Modulation ................................................................................5

ALFA TOP Technical Parameters ..............................................................................6

ALFA ECO Technical Parameters ..............................................................................6

Fans: Technical Parameters .....................................................................................7

Airow Reach Diagram ...........................................................................................7

Main Dimensions ....................................................................................................8

Alfa 15-49 ...............................................................................................................8

Alfa 62 ....................................................................................................................8

Method of Use .........................................................................................................9

Installation Safe Distances ......................................................................................9

Fixed Brackets .......................................................................................................10

Pivoted Brackets ...................................................................................................10

Suspension Cable System ......................................................................................11

Installation Kits.....................................................................................................12

Standard Cowl Flaps – Horizontal Installation, for Installations Up 3m ................13

Double-sided Standard Cowl Flaps: Horizontal, for Installations Up to 3m ...........13

Single-sided Standard Cowl Flaps: Horizontal, for Installations Up to 3m ...........14

Secondary Cowl Flaps: Horizontal Installation, for Installation Over 3 m ..............14

Anemostat V: Vertical Installation, for Installations Up to 5 m .............................15

Anemostat S: Vertical Installation, for Installations 5 to 12 m ..............................15

Four-sided Anemostat: Vertical Installation, for Installations Up to 5 m ..............16

IP54 Kit for the AL15-AL62 Units ...........................................................................17

Filteration Boxes ...................................................................................................18

GLAZ Z and Paper Filters .......................................................................................19

Pocket Filters ........................................................................................................19

Flue Extraction for Capacities ..............................................................................20

Over 7 kW..............................................................................................................20

Flue Extraction/Air Inlet .......................................................................................20

Fuel Extraction System: .......................................................................................20

Installation ...........................................................................................................20

Suction & Extraction Items ...................................................................................21

Suction & Extraction Items ...................................................................................22

Gas Connections....................................................................................................24

Electro Connections ..............................................................................................24

Electrical Wiring SIGMA + TOP and ECO model 2016 ............................................25

Remote Control .....................................................................................................26

ALFA TOP - Control ................................................................................................27

ALFA ECO - Control ...............................................................................................27

Programmable Thermostats .................................................................................28

Easy.Net.Standard Central Control .......................................................................29

Easy.Net.Standard 02: Wiring Diagram .................................................................29

Lersen.Net II Central Control .................................................................................30

Commissioning .....................................................................................................32

Setting the Combustion, In General ......................................................................32

Alfa TOP and ECO: How to Set Capacity .................................................................33

Modulation Board Functions.................................................................................33

Unit Operation ......................................................................................................34

Routine Maintenance, Technical Care ...................................................................34

Faults, FAQ ............................................................................................................34

Standards, Ordinances, and Protocols ...................................................................35

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Introduction

The AlfaTOP premium series is making use of the burners with continuously con-

trolled capacity, based on the heat e ciency measurements. This system of burner

capacity smooth control implies considerably lower gas consumption. The AlfaTOP

series is advantageous for optimum air temperature at the unit outlet. Capacity con-

trol of Lersen Flexi Drive provides an optimum temperature gradient with steady

comfortable temperature at the unit outlet, without any overheated air ow. As

such, the AlfaTOP units preclude substantially any hot air strati cation across the

hall cross-section and increase the economic bene ts as against the systems esta-

blished as a standard. Obviously, the TOP premium brand is making use of the best

material series. The units to be installed horizontally include a comfortable remote

control, which provides necessary control functions from the service height.

• Smart capacity modulation for the FLEXIDRIVE burner

• Environment-friendly premix burner, using the Honeywell technology

• Stainless combustion chamber, stainless cowl  aps

• Options for vertical and horizontal installation

• Use of mixer chambers for ventilation

• Windmax special secondary cowl  aps

• High air ow rates and far reaches

• Exchanger is of the design to preclude strati cation

• Capacity from 15 to 62 kW

• Central control connector

• Increased protection by covering can be increased to IP 44 on request

• 84-month warranty

• Wide range of accessories

• Free commissioning

• Up to 20 m (10+10 m) suction and  ue extraction lines (Ø 100 mm) can be in-

stalled

• The unit remote control is included in the price (horizontal design only; against

your order in case of the vertical design)

The Lersen AlfaECO gas- red air heaters are easily available and inexpensive me-

ans that provide heating in warehouses and workshops. Thanks to the continuously

settable capacity of the premix burner an optimum heat capacity and resulting tem-

perature gradient can be set.

• An economic series, very low purchase price

• Modulation for two levels of capacity, depending on the  ue temperature

• Very long  ue extraction lines can be used

• Options for horizontal and vertical installation

• Exchanger is of the design to preclude strati cation

• Long reach of air ow

• Remote control can be connected

• 60-month warranty

• Wide range of accessories

• Capacity from 15 to 45 kW

• Air ow rate 3,095 – 5,502 m3/h

• Up to 20 m (10+10 m) suction and  ue extraction lines (Ø 100 mm) can be in-

stalled

The range of AlfaTOP/ECO gas- red air heaters can be extended to include the

Sky.Net wireless control system or the Lersen.Net II central controller. The units have

the connectors to which a local/remote control can be connected for control of basic

functions from service height.

This Manual forms a part of the product and cannot be used independently. Read

it carefully as it contains vital information on installation, usage, and maintenance

of the heater units. Keep these Instructions for future references.

Should the equipment be sold or transferred onto another user, see to it that

these Instructions are always handed over along with the equipment for their use by

the new owner. The manufacturer or importer renounces responsibility for the da-

mages caused by unskilled installation, usage, and maintenance, damages caused

by unauthorized personnel and contrary to standards and regulations. Your product

is covered by the warranty for the duration and upon the conditions as speci ed in

the manufacturer/importer-issued Warranty Note.

Startup of the assembly may only be carried out by an authorized LERSEN service

centre. Installation must be carried out in accordance with the applicable standards

and pursuant to the manufacturer’s instructions contained herein, solely by skilled

personnel. Incorrect installation or use may result in material damages or personnel

injuries. Should it be the case, the representative or manufacturer renounces any re-

sponsibility. This equipment must solely be used for the purpose for which it has

been made.

Any other use is hazardous. Only an authorized LERSEN service centre may carry

out startup of the unit, including the change should a di erent gas be used. Check

the local fuel distribution conditions, overpressure, and system setup for their com-

patibility before installation. The equipment must not be started up where the tem-

perature dropped below 5°C (it is good idea to permanently keep the space at a mo-

derate temperature).

Any transportation-attributable damage shall solely be settled from the hauler’s

insurance. The hauler is expected to acknowledge such damage.

The user is obliged to observe the standards on using the gas- red appliances,

mainly then ČSN EN 416-1, ČSN EN 13410, ČSN 06 1510, ČSN 73 4210, NV 178/2001

Coll., incl. their amendments, ČÚBP Ordinance “On Gas- red Equipment Inspections,

Overhauls, and Testing that also stipulate the equipment safety conditions“.

The User is obliged to ensure, at least once a year, inspection and maintenance of

the has- red equipment by a Lersen brand workshop or by a certi ed maintenance

engineer. If the User fails to do so, the warranty becomes inapplicable and da-

mages, if any caused in service, may not be claimed.

If the equipment remains unused for more than 3 month, end branch of the

gas line must be deaerated.

Non-stop running for not less than 30 minutes should be provided during the

very operation of the Lersen gas- red equipment. You will thus exclude excessive

amounts of condensate that would otherwise be generated at the beginning of ope-

ration due to insu cient exchanger saturation with heat and  ue extraction. It

is advisable to use a condensate trap at the beginning of the  ue duct. The trap

must regularly be checked or continuous condensate drainage must be ensu-

red.

Should there be any modi cations done on the main or secondary gas line or the

gas pressure changed in the gas line to which the Lersen gas- red appliances are co-

nnected, it is absolutely necessary to shut down such appliances and carry out re-co-

mmissioning. Otherwise the manufacturer renounces all responsibility for any da-

mages or harm to health.

General Precautions

Unless otherwise stated, all the previous user instructions become void

whenever a new User Instructions are issued. For current version of the User

Instructions visit www.lersen.com (PRODUCTS Section).

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

Remove the packaging material and make sure that the contents have not su e-

red any damage. Check the consignment for completeness against the Delivery

Note. Do not use the unit and contact the supplier if in doubts.

Packaging materials (wooden crate, nails, clamps, plastic bags, foam polystyre-

ne) must not to be left within reach by children, not to pose any hazard. Use the ori-

ginal packaging for re-transportation or storage, if any.

Application

I n s t a l l a t i o n i n G e n e r a l

Installation Rules

The Alfa units must be installed in compliance with the applicable standards

and regulations. Design engineer, installer, and User are responsible for proper and

safe installation.

The Alfa units must not be run:

in aggressive atmospheres

in strong electromagnetic  elds

in heavily dusty or humid environments

in environments with explosion hazard

Should the unit have to be installed in a non-permissible environment as above,

every individual installation is subject to assessment by the relevant authorities in

accordance with the applicable regulations.

Installation of the equipment must be carried out by a quali ed sta member,

competent to do the work, according to the manufacturer’s instructions and appli-

cable standards (ČSN 06 1008, ČSN EN 416-1, ČSN 33 2000, ČSN 38 6420, TPG 704

01).

Commissioning, maintenance, repairs, and technical care may only be carried

out through an authorized LERSEN Service Centre.

Manufacturer renounces responsibility for damage due to unskilled installation.

a) For the conditions upon which the units can be connected to the gas system

and power supply see the “Gas/Electro Connections” (page 23).

b) Type and installation of the  ue duct must comply with the ČSN 734201 stan-

dard. The combustion air ow rates must comply with TPG 704 01.

For the  ue duct type installations see the “Extraction Systems: Type Examples”

(page 20).

c) Installation must be carried out in respect of the adequate safe space for ma-

king adjustments and technical care.

d) The ČSN 06 1008 standard must be respected whenever the safe distance of

the Alfa- TOP/ECO units and their  ue ducts from the building material surfaces is

to be determined.

e) Always make a careful inspection once the installation is completed. Run the

system for at least one cycle time in order to  nd out that the system works as in-

tended, mainly in respect of the limit control function. Recommendation is to en-

trust the heater commissioning solely to a skilled expert personnel. The hot air he-

aters require an expert technical care without which a reliable operation, fuel

savings, and everlasting high e ciency can hardly be achieved. If it becomes nece-

ssary to change over to operation/ventilation, our recommendation is to use the re-

mote control with the heating/ventilation selector switch, code DOAL000001.

Packaging

General User Instructions

Warranty

The AlfaTOP/ECO must be used within the applications for which they are expre-

ssly intended. Any other uses shall be deemed as incorrect, therefore as posing a

hazard. Manufacturer and the supplier renounce responsibility for the damages

due to incorrect use. The risk shall be borne by the User himself.

Only the original LERSEN accessories may be used for all the AlfaTOP/ECO units.

Only the LERSEN brand repair shop may replace the spare parts. The manufacturer

renounces all responsibility for damages or injures where other than original

spares have been used.

Avoid contacts with the heater’s hot surfaces being usually near the  ame.

These surfaces heat up in service and remain hot for a time even when you turn o

the unit.

All the pending hazards have to be eliminated once the unit stops being run.

Should the Alfa unit be de nitely put out of service, hire an authorized LERSEN

service centre.

The unit can be disconnected from main power supply by interrupting its inlet

cable any turning the main circuit breaker to its o position. Fuel supply can be bro-

ken by closing the respective manual valve (ball valve) on the inlet line. Failure to

observe the main rules may result in serious injury or death.

While being put into operation, the ALFA units have to be left continua-

lly running in the HEATING mode for at least 4 hours. The exchanger will

become thermally and super cially stabilized in this mode. At this time a

smoke can be generated and set o the  re detectors.

The ALFA TOP air heaters are covered by the 84-month warranty provided that

the Lersen Terms & Conditions and maintenance conditions are observed. The

60-month warranty applies to the ALFA ECO air heaters subject to observance of

the same conditions.

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Readiness Conditions for

Commissioning of a Reserved

Lersen Gas-red Equipment

The Installer shall only use the equipment/goods delivered in a good condition,

showing no visible signs of damages, including the goods documents. The Installer

is responsible for proper installation of the equipment and that it is connected as

instructed by the manufacturer and according to the design documents, respecting

the following items:

Bearing structure installation

Installation of the exhaustion and fume extraction systems.

Power supply inlet line.

Installation of the control thermostat of Lersen-net II central control.

Connection of control cables.

Connection of other cabling to the unit.

Properly pressurized gas connection to supply the necessary gas ow rate for

proper operation of the equipment.

The Installer is also obliged to verify and document: Correct location and

setup of the product in compliance with the Manual. Contact Lersen whenever an

ambiguity appears.

Applicable electric system inspection report.

Applicable gas system inspection report.

Applicable gas distribution system inspection report. (pressure test,

pressurizing report)

Applicable inspection report for the ue extraction system/stacks

The following is further necessary for commissioning:

Technical care purchase order properly prepared in writing.

Certied conrmation that the technical care order has been accepted.

Proper access to the equipment.

To provide sta member(s) the maintenance engineer shall train as operator(s).

Conrm all the documents to be submitted by the maintenance engineer

(completed list of maintenance tasks, order for extra work, etc.)

The condition upon which any maintenance can be done and goods delivered

(such as commissioning, yearly inspection, post-warranty care, etc.) lies in settling

of all Client’s obligations to Lersen CZ, s.r.o. Should these obligations not be

settled, the performances ordered with Lersen CZ, s.r.o. shall be suspended until

settlement of all the Client’s liabilities.

If the maintenance engineer nd out at the location of his response that

the conditions for the maintenance response are not satised, the equipment/

building structure is not prepared, or the equipment is inaccessible for making

the maintenance task, the Client having ordered the maintenance response shall

be invoiced for vain response. Its price shall consist of a xed payment, traveling

expenses for the distance over 100 km, and the rate for every tackled hour of the

maintenance engineer’s work.

FlexiDrive is proprietorship system able to modulate the Lersen units’ capacity.

In principle, this system senses and evaluates the  ue temperature, regulating

accordingly the capacity of the equipment so that the combustion process e cien-

cy is always at its highest level and gas consumption at its lowest level.

The  ue temperature is a very precise and quick indication of the building’s heat

demand levels. If the building is unheated and heat demand high, the  ue tempe-

rature level is below its set point. With increasing e ect of heating in the interior,

when a warmer air passes through the exchanger, temperature of the  ue at the

exchange output is also growing. FlexiDrive will respond by reducing the unit’s in-

put.

Along with growing air temperature in the room even the Δt of the air being he-

ated should conveniently fall to preclude any adverse strati cation phenomenon,

i.e. hot air accumulation under the ceiling.

By reducing the set’s capacity while keeping the air ow rate through the ex-

changer at ever constant level FlexiDrive will reduce the Δt value to preclude thus

any air strati cation in the interior.

Flue temperature

Depending on length and type of the fume extraction system the  ue tempera-

ture should range between 170°C and 220°C.

The following applies here:

a) if the fume extraction system is shorter or equipped with the condensate re-

moving system, the  ue temperature may get close to 170°C.

b) if the fume extraction system is longer, but not equipped with any condensa-

te removing system, a higher temperature should be set.

It broadly applies that higher equipment e ciency levels and lower gas con-

sumption levels will be achieved at lower  ue temperatures and vice versa

LERSEN FlexiDrive Modulation

Large amounts of smoke arise during the commissioning, coming from the com-

bustion chamber, exchanger, or radiation tubes while being  red, activating po-

tentially the  re protection sensors.

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

ALFA TOP Technical Parameters

ALFA ECO Technical Parameters

1 Airow (rate) reach in free space, residual velocity 0.25 m.s-1 [m] (22°C, 60% by volume)

2 Flow rate (22°C, 60% by volume)

3 Internal gas line pressure must be stable, not uctuating by more than +-5% from the set

point and never exceeding the connection gas pressure limit.

4 Sound pressure equivalent A of the noise for unloaded unit, 5 m far away in the space

with average reference properties based on the measurements obtained as specied by the

applicable Czech Technical Standards (ČSN ISO 1996-1, 1996-2, 1996-3)

5 Sound pressure value based on the analysis results achieved in the space with

medium sound absorption coecient =1.0, 5 m far away.

6 With the IPX4 IP44 Kit installed, purchase order no. KIP4400001, protection by

covering is IP44

7 Hot air units for VERTICAL installation are normally delivered as WITHOUT COWL

FLAPS AND REMOTE CONTROL.

TYPE ALFA TOP 19 ALFA TOP 29 ALFA TOP 39 ALFA TOP 49 ALFA TOP 62

Rated input, max. kW 22.0 32.0 43.0 54.0 69.0

Rated input, min. kW 17.0 20.8 27.9 35.1 44.9

Rated output, max. kW 20.0 28.9 39.9 49.2 62.6

Rated output, min. kW 15.6 19.2 26.4 32.3 41.5

Eciency (max. input) % 90.7 90.4 90.3 91.2 90.8

Eciency (min. input) % 91.8 92.5 94.0 92.1 92.5

NOx Class mg/kWh 4

Δt (min.) °C 24 25 23 26 31

Airow reach 1 m 15 17 20 22 25

Airow rate, max. m3/h 3,400 4,400 5,900 6,700 7,000

Airow rate, min. m3/h 1,900 2,400 3,300 3,700 3,850

Unit electrical input W 220 310 610 610 460

Number / Ø of fans mm 1 / 400 1 / 450 1/500 1 / 500 2 / 400

Sound pressure level 4 | 5 dB(A) 54.9 | 50.1 58.7 | 52.6 61.1 | 58.3 63.3 | 58.1 61.9 | 60.3

Suction & ue extraction Ø mm 100

Gas connection diameter 3/4” 1“

Connection gas pressure 3kPa 1.8 - 4.0 +/- 5%

Electric connection V 230 / 50 Hz

Fan// unit electrical covering protection IP44 // IP20 (IP44 6)

Gas consumption (max./min.) m3/h 2.1/1.6 3.0/2.0 3.9/2.6 5.2/3.3 6.6/4.3

Weight kg 81 96 111 119 128

Ordering No. – horizontal type ALT19YHxxx ALT29YHxxx ALT39YHxxx ALT49YHxxx ALT62YHxxx

Ordering No. – vertical type ALT19YHxxx ALT29YHxxx ALT39YHxxx ALT49YHxxx ALT62YHxxx

TYPE ALFA 15 ECO ALFA 25 ECO ALFA 35 ECO ALFA 45 ECO

Rated input, max. kW 17.0 28.0 39.0 49.0

Rated input, min. kW 14.7 18.2 25.4 31.9

Rated output, max. kW 15.5 25.5 35.5 44.6

Rated output, min. kW 13.6 16.8 23.4 29.4

Eciency (max. input) % 91.5 90.9 91.1 91.0

Eciency (min. input) % 92.5 91.9 92.5 92.3

NOx Class mg/kWh 4

Δt (min.) °C 25 27 29 24

Airow reach 1 m 13 17 22 24

Airow rate m3/h 2,300 3,400 4,400 6,600

Unit electrical input W 190 220 310 610

Number / Ø of fans mm 1 / 350 1 / 400 1 / 450 1 / 500

Sound pressure level 4 | 5 dB(A) 53.1 | 48.5 54.6 | 49.6 58.4 | 52.2 62.2 | 58.9

Suction & ue extraction Ø mm 100

Gas connection diameter 3/4”

Connection gas pressure 3kPa 1.8 - 4.0 +/- 5%

Electric connection V 230 / 50 Hz

Fan// unit electrical covering protection IP44 // IP20 (IP44 6)

Gas consumption (max./min.) m3/h 1.6/1.4 2.7/1.7 3.7/2.4 4.7/3.0

Weight kg 79 94 106 115

Ordering No. – horizontal type ALE15YHxxx ALE25YHxxx ALE35YHxxx ALE45YHxxx

Ordering No. – vertical type ALE15YVxxx ALE25YVxxx ALE35YVxxx ALE45YVxxx

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Fans: Technical Parameters

Airow Reach Diagram

1000 2000 3000

]MFC[000200010050 1500

[Pa]

100

H ni[4,03,01,0 2O]

0,2

[m3/h]

1385 140

1335 160

930 69

895 78

[min-1 ]P1

[W]

1000 2000 3000 4000

0 500 1500 2000 [CFM]1000 2500

[Pa]

120

160

0,2 0,4 0,6 [in H

2O]

[m3/h]

350

400

1430 172

1395 210

935 126

895 140

[min-1 ]P1

[W]

450

500

1000 2000 3000 4000 5000 6000

]MFC[000200010 2000

[Pa]

100

120

H ni[3,02,01,0 2O]0,4

[m3/h]

1390 258

1360 292

930 171

870 200

[min-1 ]P1

[W]

1400 510

1380 530

1320 590

1200 760

[min-1 ]P1

[W]

2000 4000 6000 8000 [m3/h]

0 1050 1200 1300 1350 1400 1375 1450 [CFM]

[Pa]

120

200

280

160

240

320

0,2 0,4 0,6 [in H

2O]

ALE 15

ALT19+ALE25+ALT62(2of them) ALT39,ALT49+ALE45

ALT29+ALE35

5 10 15 20 25

0,25

0,5

0,75

1,25

3,25

3,5

1,5

1,75

2,25

2,75

2,5

m/s

Airow velocity [m/s-1]

distance [m]

45 62

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hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

600

445

1310

95,5

1010 275

505

460

95 820 52

RC2 RC1

269,5

FLUE EXTRACTION

AIR SUCTION

SAFETY

THERMOSTAT

MODE OF

OPERATION

PILOT LAMP

EL. SOCKET

230V/50Hz

GAS INLET 3/4“ CENTRAL/REMOTE/WIRELESS CONTROL CONNECTOR 1310

850

199,8

Alfa 15-49

Alfa 62

Main Dimensions

DIMENSIONS/TYPE Alfa TOP/ECO

15-20

Alfa TOP/ECO

25-29

Alfa TOP/ECO

35-40

Alfa TOP/ECO

Cowl ap A width mm 470 570 680 800

Unit B width mm 770 870 980 1010

Bracket K clamps spacing mm 290 390 500 590

600

95 52

275

460

RC1

RC2

850

600

445

269,5

95,5

199,8

SAFETY

THERMOSTAT

MODE OF

OPERATION

PILOT LAMP

FLUE EXTRACTION

AIR SUCTION

EL. SOCKET

230V/50Hz

GAS INLET 3/4“ CENTRAL/REMOTE/WIRELESS CONTROL CONNECTOR

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Method of Use

Only properly skilled personnel may install the unit in compliance with the

applicable regulations and decrees; wrong installation could cause people or

animal injury or damage to property for which the manufacturer cannot be

responsible. See “Gas/Electro Connections” (page 24-26).

The fuel supply inlet piping should thoroughly be cleaned and any foreign

material that might cause damage to the unit removed before connection of this

hot air unit. In the event of disrespect the manufacturer renounces responsibility

for any damage or injuries. Warranty claims are excluded in this case.

Consider carefully the schedule of hot air units’ locations and capacities, based

on the space you want to heat or ventilate. For a pertinent example see Fig. 1.

It is moreover necessary to satisfy the minimum installation parameters – see

Fig. 2. A clear space has to be allowed for on the side, making the burner and

exchanger accessible.

It is recommendable to use the WINDMAX secondary cowl  aps that will

extend the air ow reach where the installation height is more than 3 m.

Installation in General

400 mm

600 mm

200 mm

V = 2 000 - 2 500mm

DIRECTION OF THERMAL RADIATION

obr. 2

Minimum installation space and recommendable working height

Fig. 1 Example of the units’ locations in space

Installation Safe Distances

Information on in ammability degrees/classes of responses to  ames for a

choice of materials:

A –  ameproof

– granite, sandstone, heavy porous concrete, bricks, ceramic tiles, special

plaster materials,

B – uneasily in ammable – Heraklit, Itaver,

C1 – hardly in ammable

– deciduous wood, plywood, hardened paper, composite board,

C2– medium in ammable

– chipboards, corkboards, rubber

C3– easily in ammable

– wood- bre boards, polystyrene, polyurethane, “lightweight” PVC

Safe distances from in ammable objects must be observed in the event

of on-pallet storage. See ČSN 06 1008 a ČSN EN 13501-1. For safe

distances of the units and  ue ducts see ČSN 06 1008. Safe distance in the

direction of thermal radiation (for wooden  xtures - Ds2,d0 Class) is not less than

1500 mm.

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

Used to support the hot air units.

The individual brackets di er in length, allowing variable use of nu-

merous hot air unit types. Once mounted on wall, the bracket’s platform allows the

unit to be pivoted and the hot air ow aimed as required. A  exible hose has to be

used for fume exhaustion.

Used to support the hot air units.

The individual brackets di er in length, allowing variable use of numerous hot

air unit types.

Fixed Brackets

Pivoted Brackets

600

269,5

445

850

min. 2000

430

112

min. 2000

600

269,5

445

850

450

130

156 96

502

PIVOTED PLATE

35°

DIMENSIONS/TYPE Alfa TOP/ECO

15-20

Alfa TOP/ECO

25-29

Alfa TOP/ECO

35-40

Alfa TOP/ECO

45-49

Bracket K mounts spacing mm 290 390 500 590

Ordering No. Used for Length (mm)

OPALAP0001 AL15-29 extendet 1350

OPALAS0001 AL15-29 standard 950

OPALBP0001 AL35-49 extendet 1350

OPALBS0001 AL35-49 standard 950

OPALCS0001 AL62 standard 1350

Ordering No. Used for Length (mm)

PP90000001 AL15-49 900

PP13400001 AL15-62 1340 (AL + KSK)

PP99000101 AL62 990 + KSK

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Suspension Cable System

ADVANTAGES OF THE CABLE SUSPENSION SYSTEM

• Big bearing capacity - 5:1 system load ratio

• Instead of threaded rods – no cutting,

 ling or fastening nuts any more

• Quickness – installation time cut by 80%

• Safe – light-weight, installation and  tting on the spot

• Time & money saving- no auxiliary brackets required

tab.1

Suspension angle 0° 15° 30° 45° 60°

Suspension type - HF Max. bearing capacity at declination from vertical axis (in kg)

HF32EC/ HF34EC 90 86 77 63 45

Working load % 100 96 86 70 50

Ordering No. Description

HF34EC Single snap-hook suspension, size 3, safety pin, 90 kg

HF32EC Single snap-hook suspension, size 3, safety pin, 90

**) – Do the task if there are at least three suspensions, as otherwise the suspended object may fall down and cause injury or death. Manufacturer renounces any responsibility if the condition is not satis ed.

1. Should an installation be exposed to high level of humidity or acidity,

an appropriate material has to be selected for the suspension system. Locally

prevalent conditions should be consulted before making choice of such material

and doing the installation itself.

2. With the installation completed, the suspension has to be checked at least

once a year.

1 Enlargement/diminishing of the bracket lug

(use the included tool to press on the safety pin

in the self-clamping clip to release the cable therein,

the lug size thus becomes adjustable **)

2 Suspension’s self-clamping clip

(use the included tool to press on the safety pin

in the self-clamping clip to release the cable therein,

length of suspension thus becomes adjustable **)

3 Length of suspension

(basic length is 2 or 4 m, taken from the cable end to the

snap hook lug)

4 Snap hook with wire safety pin

(11 mm in clear diameter). The snap hook is snapped into

the suspension system lug

(the wire safety pin will not allow spontaneous release

under vibrations, if any)

Suspension bracket

Type of suspension

HF32EC/HF34EC

ALFA

Angled under 10 deg

Method of under-ceiling suspension at less 10 deg

suspension eye

Suspension cable system

ALFA

Angled over 10 deg

Method of under-ceiling suspension at more than 10 deg

Threaded rod

spension frame

Suspension cable system

THREADS USED FOR VERTICAL SUSPENSION

THREADS USED TO MOUNT A

SHOCK ABSORBING PADS AND OTHER AH‘S

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

Kit A contains -

 x e d b r a c k e t , g a s - s u p p l y c o n n e c t i o n h o s e , f u m e e x h a u s t i o n a n d s u c t i o n d u c t s ,

weekly digital thermostat

Ordering No. For units of the type

KIAA000001 A-kit for AL15-35

KIAB000001 A-kit for AL62

KIAC000001 A-kit for AL40-49

KIT A - contains

PP90000001 900 mm  xed bracket – 2 of them

111CH AL 100 extension/1,0 00 mm long with wind-screening terminal

108CH AL 100 extension//800 mm long with wind-screening terminal

PPT1000011 WR04L DN18 G3/4-G3/4 gas connection pipe, L=1000 mm

CMR707A1007 CMR707A weekly programmable thermostat (kit KIAA, KIAB)

CM907 Weekly programmable thermostat (kit KIAC)

KIT B - for AL15-29 contains

OPAL152901 Pivoted bracket AL15-29

111CH AL 100 extension/1,0 00 mm long with wind-screening terminal

108CH AL 100 extension/800 mm long with wind-screening terminal

105CV Flexi extension 100/425 EXTRACTION

105CF Flexi extension 100/425 SUCTION

PPT1000011 WR04L DN18 G3/4-G3/4 gas connection pipe, L=1000 mm

CMR707A1007 CMR707A weekly programmable thermostat (kit KIAA, KIAB

KIT B - for AL35-49 contains

OPAL354901 Pivoted bracket AL35-49

111CH AL 100 extension/1,0 00 mm long with wind-screening terminal

108CH AL 100 extension/800 mm long with wind-screening terminal

105CV Flexi extension 100/425 EXTRACTION

105CF Flexi extension 100/425 SUCTION

PPT1000011 WR04L DN18 G3/4-G3/4 gas connection pipe, L=1000 mm

CMR707A1007 CMR707A weekly programmable thermostat (kit KIAA, KIAB)

CM907 Weekly programmable thermostat (kit KIAC)

Kit B contains –

pivoted bracket, gas-supply connection hose,  exible and other fume

exhaustion and suction ducts, weekly digital thermostat

Ordering No. For units of the type

KIBA000001 Bkit kit for AL15-29

KIBB000001 Bkit kit for AL35

KIBC000001 Bkit kit for AL40-49

Complete assemblies for quick installation of hot air units

Installation Kits

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Standard cowl aps for Alfa units of all types. Galvanized or stainless nish.

Included as a part of the units to be installed horizontally, unavailable with the

units for vertical installation. As to be ordered.

Ordering No. Standard Cowl Flaps nish/for the unit Width (mm)

ZSAANH0001 Standard Cowl Flaps stainless AL15-20 470

ZSAAPH0001 Standard Cowl Flaps galvanized AL15-20 470

ZSABNH0001 Standard Cowl Flaps stainless AL25-29 570

ZSABPH0001 Standard Cowl Flaps galvanized AL25-29 570

ZSACNH0001 Standard Cowl Flaps stainless AL35-40 680

ZSACPH0001 Standard Cowl Flaps galvanized AL35-40 680

ZSADNH0001 Standard Cowl Flaps stainless AL45-49 800

ZSADPH0001 Standard Cowl Flaps galvanized AL45-49 800

ZSAENH0001 Standard Cowl Flaps stainless AL62 pár 1010

Ordering No. Double-sided standard cowl aps nish/for the units

ZDAAP000 galvanized/AL15-20

ZDAAN000 stainless/AL15-20

ZDABP000 galvanized/AL25-29

ZDABN000 stainless/AL25-29

ZDACP000 galvanized/AL35-40

ZDACN000 stainless/AL35-40

ZDADP000 galvanized/AL45-49

ZDADN000 stainless/AL45-49

ZDAEN000 stainless/AL62

Standard Cowl Flaps – Horizontal Installation, for Installations Up 3m

Double-sided Standard Cowl Flaps: Horizontal, for Installations Up to 3m

596

AL45-49AL15-40

Angle of cowl aps can safely

be adjusted manually as required

Angle of cowl aps can safely

be adjusted manually as required

Standard cowl aps for Alfa units of all types.

Galvanized or stainless nish. As to be ordered.

Flaps material dierentiation in the ordering no.: : ZSZAPH0001 - P = galv anizedZSZANH0001 - N = stainle ss

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

WINDMAX secondary cowl aps for horizontal installation. Secondary aps reduce

the airow temperature gradient and extend the airow reach. The segments can

easily be set in angle by means of a connection rod.

Secondary Cowl Flaps: Horizontal Installation, for Installation Over 3 m

130

setting the segments‘ angle

Increased air ow reach with horizontal installation

Single-sided Standard Cowl Flaps: Horizontal, for Installations Up to 3m

Angle of cowl aps can safely

be adjusted manually as required

Standard cowl aps for Alfa units of all types.

Galvanized or stainless nish. As to be ordered.

Windmax secondary cowl aps

Ordering No. for the unit

ZWAAPH0001 AL15-20

ZWABPH0001 AL25-29

ZWACPH0001 AL35-40

ZWADPH0001 AL45-49

ZWAEPH0001 AL62

Standard Cowl Flaps

Ordering No. for the unit

ZJAAP00001 AL15-20

ZJAAN00001 AL15-20

ZJABP00001 AL25-29

ZJABN00001 AL25-29

ZJACP00001 AL35-40

ZJACN00001 AL35-40

ZJADP00001 AL45-49

ZJADN00001 AL45-49

ZJAEN00001 AL62

Flaps material dierentiation in the ordering no.: : ZSZAPH0001 - P = galv anizedZSZANH0001 - N = stainle ss

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Double-sided anemostat c/w secondary cowl  aps, vertical installations over 5

m. Secondary  aps reduce the air ow temperature gradient and extend the

air ow reach. The  aps are divided into two sections, each of them being

interconnected by means of connection rods with which the air can variably be

aimed.

Ordering No. Double-sided anemostat c/w secondary cowl aps Windmax PV

ASAAPV00 AL15-20

ASABPV00 AL25-29

ASACPV00 AL35-40

ASADPV00 AL45-49

ASAEPV00 AL62

Anemostat V: Vertical Installation, for Installations Up to 5 m

Anemostat S: Vertical Installation, for Installations 5 to 12 m

290

130

setting the segments‘ angle

Double-sided anemostat c/w secondary cowl aps, vertical installations up to 5

m. WINDMAX PV, secondary aps reduce airow temperature gradient, splitting

the airow into two directions. The cowl aps are divided into two sections. Each

of them is connected with others by means of connection rods.

Ordering No. Double-sided anemostat c/w Windmax secondary cowl aps

AVAAPV00 AL15-20

AVABPV00 AL25-29

AVACPV00 AL35-40

AVADPV00 AL45-49

AVAEPV00 AL62

setting the segments‘ angle

300

For high vertical installations where air ow reach has to be extended

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

Four-sided anemostat’s cowl  aps are divided into four sections. The  aps are

manually adjustable

Four-sided Anemostat: Vertical Installation, for Installations Up to 5 m

225

Ordering No. Four-sided anemostat for the unit

ACAAPV00 AL15-20

ACABPV00 AL25-29

ACACPV00 AL35-40

ACADPV00 AL45-49

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Ordering No. For units of the type

ALKIP54001 IP54 Kit for the AL15-AL62 units

IP54 Kit for the AL15-AL62 Units

Only specialized personnel may install the unit in compliance with the

applicable regulations and decrees; wrong installation may cause injury to

persons or animals or property damages for which the manufacturer cannot be

responsible. See “Gas/Electro Connections” (page 24).

In their basic design the Alfa units have IP20 protection by covering. Using the

IP54 will allow the unit to be run even where the IP54 protection is required

The IP 54 KIT may only be installed in the Lersen factory against a separate

order before the unit is dispatched for shipment.

The IP 54 protection by covering applies only to the spaces where the electric

parts and burner reside. The equipment must be run with the suction and fume

extraction of the type C, as a closed appliance.

View of the Alfa unit’s rear panel

3/4“ gas supply line

240

KIT IP54

230V/50Hz cable bushing Lersen.net II central

control cable bushing

main switch

of Alfa unit

RESET button

TEX screws 8x

RC2 RC1

RC2 RC1230V

50Hz

Flue extraction

Air inlet

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

Ordering No. For units of the type

SZFSK00001 Filter clogging indication

The manostat closes its contacts and the red pilot lamp lights up in response to

an airow drop due to lter clogging. Avoid meddling with the manostat setting.

Replace immediately the lter when the clogging indicator turns on.

Filter Clogging Indication

FUS

230V/1,6A

RGC

MANOSTAT

PILOT LAMP

Filteration Boxes

Filteration boxes. Replaceable  lter forms a part of the  lteration box.

Filteration level: G4 for radial fans / G3 for thrust fans

300

Ordering No. Pro jednotku Rozměry (mm)

ABCDEF

FBDAU00001 AL25-29 500 520 540 500 520 540

FBDBU00001 AL35-49 560 580 600 560 580 600

Ordering No. Filteration box for the unit

FBDAU00001 Filteration box with KS GLAZ G3 plate lter AL25-29,/SK500/

FBDBU00001 Filteration box with KS GLAZ G3 plate lter AL35-49,/SK600/

FBKAU00001 Filteration box with AL25-29 pocket lter,/SK500/

FBKBU00001 Filteration box with AL35-49 pocket lter,/SK600/

FBDCU00001 Filteration box with KS GLAZ G3 pocket lter AL62

Alfa

hot air gas-red air heaters

In support of engineering, installation, servicing, and maintenance 52.10.03.2017.eng

Pocket lters are intended for under-ceiling installations only.

Pocket Filters

A pocket filter

Filters are intended for horizontal installations only.

Filter applications: GLAZ Z – for thrust and radial fans

PAPER KS-W/48 – for radial fans only

Where used, the lter will cause ca 35% drop in the airow rate as against the

rated values. The drop can be much higher should the lter get clogged.

GLAZ Z and Paper Filters

Filter KS GLAZ Z 2

Filtration level G3

Paper filter KS-W/48

Filtration level G4

KS GLAZ Z

Where to be used with radial fans, higher level of ltration /G4) can be ordered.

A lter of the class higher than G3 CANNOT be used with thrust fans.

In response to the lter used, ca 30% airow drop will occur as against the rated

values. The drop may highly exceed the above value should the lter get clogged.

Technical data as per EN 779 – lter class KS PAK 25 - G3 PAK 35 - G4

Material synthetic bre

Potential recovery no

Separability Am (%) 80-90 >90

Rated airow (m3/h) 3,400 3,400

Initial pressure loss (Pa) 26 33

Recommended nal pressure loss (Pa) 250 250

Maximum temperature resistance (°C) 75 75

Technical data as per EN 779 – lter class W 48/4 - G4

Material synthetic bre

Potential recovery no

Separability Am (%) >90

Rated airow (m3/h) 2380

Initial pressure loss (Pa) 60

Recommended nal pressure loss (Pa) 300

Maximum temperature resistance (°C) 70

Technical data as per EN 779 – lter class Z 2“ - G3

Material glass bre

Potential recovery no

Separability Am (%) 80-90

Rated airow (m3/h) 3240

Initial pressure loss (Pa) 57

Recommended nal pressure loss (Pa) 180

Maximum temperature resistance (°C) 80

Pressure loss [Pa]

Volume ow rate [m3/h/m2]

100

2500 3000 7500 9000

Glas 2“

Glas 1“

Pressure loss [Pa]

Volume ow rate [m3/h/m2]

100

1500 2000 3000 4000

W 48/4

Pressure loss [Pa]

Volume ow rate [m3/h/m2]

100

1500 2000 3000 4000

KS PAK 35

KS PAK 25

Ordering No. Filter type /for mixer chamber/

ZB16000007 Filter KS GLAZ Z 2“ G3 490x490x48/SKAU000001/

ZB16000925 Filter KS GLAZ Z 2“ G3 550x550x48/SKBU000001/

ZB16000940 Filter KS GLAZ Z 2“ G3 550x1000x48/SKCU000001/

ZB15000005 Filter G4 KS-W/48 490x490x48mm/SKAU000001/

ZB15001206 Filter G4 KS-W/48 550x550x48mm/SKBU000001/

Ordering No. Filter type /for mixer chamber/

ZB01000551 Pocket lter G3 490x490x300/SK500/

ZB01001994 Pocket lter G3 550x550x300/SK600/

ZB02004229 Pocket lter G4 550x1000x300/SK62/

Alfa

hot air gas-red air heaters

52.10.03.2017.eng In support of engineering, installation, servicing, and maintenance

10.3

Appliances rated for over 7 kW

10.3.1 For the appliances rated over 7 kW the  ue extraction through the fa-

çade wall, led out into open space, can only be selected in the following situations,

provided that the solution is justi able in technical terms:

a) an industrial complex, an appliance rated not over

40 kW, given the compliance with the conditions under 10.3.2, 10.3.5 and 10.3.7.

No windows may be above the outlet duct opening.

b) within reconstruction of residential houses and in case of family houses whe-

re it is impossible to extract the  ue via a chimney open above the building roof;

the appliances rated up to 14 kW, given the compliance with the conditions under

10.3.2 thru 10.3.9.

10.3.2 NO2 a CO air pollution limits must be satis ed at the windows of resi-

dential rooms and the rooms where the people hang out, near the  ue exhaust out-

let on adjoining and opposite façade if the  ue is exhausted into open space throu-

gh a façade wall.10) The least distances to adjoining or opposite residential or

family houses are identical with those under 10.3.8.

10.3.3 Installation of the appliances as under 10.1.1 must be without prejudi-

ce to the requirements of other Acts and regulations (such as Building Act and rela-

ted Ordinances, Building Protection Regulations, Anti-explosion Safety Regulati-

ons, etc.).

10.3.4 Appliance of the type C with their  ue led out into open space throu-

gh a façade wall, if not equipped with any  ue fan or burner with forced air intake,

must not have their thermal capacity in excess of 7 kW.

10.3.5 Flue outlet opening must always be behind the façade wall (outer sur-

face of a perimeter wall). Extension of the outlet duct may only be carried out sub-

ject to the appliance manufacturer’s consent. The duct opening must not be under

any balcony or under the roof overhang.

10.3.6 No in ammable material may be on the façade less than 0.5 m from

the opening horizontally and vertically and less than 1.5 m from it above the ope-

ning.

10.3.7 Height of the opening on residential houses must not be less than 4 m

above ground.

10.3.8 In case of industrial complexes, the distance between the  ue outlet

duct opening and neighbouring or opposite industrial buildings must be at least 10

m, and/or 15 m where the building has windows.

10.3.9 Every installation of an appliance must be accompanied in the design

documents by a schematic diagram of the opening. Zone of protection must be de-

lineated in the documents. This schematic diagram must give a clear image of rela-

tionship with other  ue exhaust openings, windows, doors, additional openings,

etc. The documentation must include description, illustration or evidence or the re-

lationship with adjacent or opposite buildings.

10.3.10 For admissible distances from openings and the protective zones deli-

neating method see Annex B (to the Standard).

10) Act No. 86/2002 Coll.

Flue Extraction for Capacities

Over 7 kW

Flue Extraction/Air Inlet

Fuel Extraction System:

Installation

Combustion air requirements

AlfaTOP/ECO hot air units must be installed in the adequately ventilated spaces

pursuant to the applicable regulations, so that a good combustion is achieved. If

the combustion air supply is not adequate or the air is polluted, the combustion

process becomes ine cient and the unit may su er damage. Necessity of adequa-

te air supply applies to all the fuel- red equipment, including those with forced

 u e e x t r a c t i o n . L a c k o f c o m b u s t i o n a i r w i l l b r i n g a b o u t e v o l v e m e n t o f c a r b o n o x i -

des, which may be toxic.

All the joints on the air feeding and  ue extracting ducts must be sealed with a

suitable sealant, so that any spurious combustion air intake and  ue leaks beyond

their proper destinations could be avoided.

Where a unit is installed on the pivoted bracket, the air suction and  ue extrac-

tion systems must be connected via a suitable  exible hose.

Should a thrust  ue extraction system be used, it must be connected to the ro-

oftop  ue extraction duct.

To avoid the condensate in ltration back into the unit it is a good idea to have,

against its freezing up, a condensation trap installed during the winter season. Ma-

nufacturer renounces responsibility for the damage caused like this should the con-

densation trap not be installed.

Always make sure that the  ue extraction and air intake stacks are  tted with a

protective grillage not allowing the birds to get in. For the  ue extraction system

components see the “Suction & Extraction Items” on pages 21-22 hereof. Or con-

tact LERSEN.

The  ue extraction systems must be installed in compliance with applicable

standards and regulations. Installation conditions applicable to the ALFA hot air

units hereof must also be met.

• Type and installation of the  ue duct must respect

ČSN 73 4201 and TPG G 800 01.

• Flue duct must be freely terminated in an uncovered position, so that the  ue

does not need to overcome any resistance on its way out and that the  ue may not

enter back into the building through windows.

• As designed, the  ue duct should minimize condensate accumulation, being of

the design that precludes any condensate comeback into the gas- red appliance.

• The  ue duct must be made from the material in compliance with the relevant

standards.

• The  ue duct must not be exposed to any structural loads.

• The ducts ( exible hoses) prone to sagging must be fastened to a solid structu-

re.

• The stand  ue duct (coaxial stack) must pass through the roof cladding via a pr-

operly sealed hole.

All the  ue duct parts protruding above the roof cladding must have equipoten-

tial bonding for lightening or voltage surge protection.

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Lersen ALFA 35 ECO User Instructions

Brand: Lersen

Model: ALFA 35 ECO

Category: Power heat guns

Type: User Instructions

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Lersen ALFA 35 ECO User Instructions

Lersen ALFA 35 ECO User Instructions

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