Alfa
3
hot air gas-
fi
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
ffi
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
fl
ow. As
such, the AlfaTOP units preclude substantially any hot air strati
fi
cation across the
hall cross-section and increase the economic bene
fi
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
fl
aps
• Options for vertical and horizontal installation
• Use of mixer chambers for ventilation
• Windmax special secondary cowl
fl
aps
• High air
fl
ow rates and far reaches
• Exchanger is of the design to preclude strati
fi
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
fl
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-
fi
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
fl
ue temperature
• Very long
fl
ue extraction lines can be used
• Options for horizontal and vertical installation
• Exchanger is of the design to preclude strati
fi
cation
• Long reach of air
fl
ow
• Remote control can be connected
• 60-month warranty
• Wide range of accessories
• Capacity from 15 to 45 kW
• Air
fl
ow rate 3,095 – 5,502 m3/h
• Up to 20 m (10+10 m) suction and
fl
ue extraction lines (Ø 100 mm) can be in-
stalled
The range of AlfaTOP/ECO gas-
fi
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
fi
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
ff
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-
fi
red appliances,
mainly then
Č
SN EN 416-1,
Č
SN EN 13410,
Č
SN 06 1510,
Č
SN 73 4210, NV 178/2001
Coll., incl. their amendments,
Č
ÚBP Ordinance “On Gas-
fi
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-
fi
red equipment by a Lersen brand workshop or by a certi
fi
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-
fi
red equipment. You will thus exclude excessive
amounts of condensate that would otherwise be generated at the beginning of ope-
ration due to insu
ffi
cient exchanger saturation with heat and
fl
ue extraction. It
is advisable to use a condensate trap at the beginning of the
fl
ue duct. The trap
must regularly be checked or continuous condensate drainage must be ensu-
red.
Should there be any modi
fi
cations done on the main or secondary gas line or the
gas pressure changed in the gas line to which the Lersen gas-
fi
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).
