ANTTI VACBOOST M09 A1500 User manual

Installation and
Operating Instructions
ANTTI DRYER HEATER
(Gas-fuelled heater, direct driven)
VACBOOST M09 A1500
408102 (en)
02-2020
ANTTI-TEOLLISUUS OY
Koskentie 89
FI-25340 Kanunki, Salo
Tel. [phone]
E-mail: antti@antti-teollisuus.
www.antti-teollisuus.

Dryer heater type.................................................................................................................................................... 3
PRESENTATION OF THE MACHINE .................................................................................................................... 4
Suitable gases:....................................................................................................................................................... 5
PURSUED CONFIGURATION ............................................................................................................................... 7
INSTALLATION ...................................................................................................................................................... 9
Safety instructions and regulations......................................................................................................................... 9
Selecting the installation location ........................................................................................................................... 9
Components to be installed in front of the gas burner............................................................................................ 9
Gas reservoir/connection........................................................................................................................................ 9
Lifting the dryer heater in place ............................................................................................................................ 12
Installing the air ducts........................................................................................................................................... 12
Grain pocket in the air pipe................................................................................................................................... 13
Locating the sensors and safety devices on a vacuum heater............................................................................. 14
Installing the temperature measuring facility ........................................................................................................ 15
Installing the vacuum sensor................................................................................................................................ 16
Installing the re thermostat ................................................................................................................................. 17
OPERATING INSTRUCTIONS FOR THE DRYER HEATER ............................................................................... 18
SERVICING.......................................................................................................................................................... 19
Annual service...................................................................................................................................................... 19
Maintenance during the operation........................................................................................................................ 19
GUARANTEE ....................................................................................................................................................... 19
POSSIBLE MALFUNCTIONS IN THE GAS BURNER......................................................................................... 20
EU Declaration of Conformity............................................................................................................................... 23
CONTENTS

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Dryer Heater
Dryer heater type
This book deals with the Antti A1500 range of gas fuelled, direct driven dryer heaters. Channel burners are avail-
able for two di󰀨erent gases; liquid gas and natural gas. The basic components of the two burners are similar. Refer
to the nameplate a󰀩xed to the side of the machine for detailed information about the type of your heater. Always
notify the seller and the service personnel of the information in the nameplate to ensure quick assistance in case
of malfunction and when ordering spare parts. To have this data available whenever required, write it down in the
corresponding place on this page.

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PRESENTATION OF THE MACHINE
- The Vacuum Heater A1500 is intended for heating the drying air in a grain dryer. The blower unit, or units,
generate(s) an airow through the heater and the dryer. The maximum temperature of the drying air can be as
high as 120°C.
- In the basic set-up, the grain dryer is placed between the heater and the blower, and an air duct is conducted
from the heater to the dryer's inlet air channel end. The air ows through the drying sections and via the suction
fan in the outlet air channel end into the air duct and further out of the building.
- The delivery of the dryer heater consists of several items: the heat exchanger, the optional outlet cone, the gas
burner and the accessories required for the assembl. In addition, the air pipe must be xed/the heater must
be connected to the dryer. The electric installations of the grain dryer's control centre must be carried out by
an electrician. In addition is required a supply/reservoir of gas, and a pipeline from it to the burner, installed in
accordance with the regulations.
- The suction cone includes eight net elements, which may be removed for cleaning of the net. Loosen rst the
M12x12 screw on the net element (1 screw/element), and after that, remove the element by sliding it in the
direction shown by the arrow.
Screw M8x12
Net element on the inlet air
channel

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Suitable gases:
Check the applicable gases and pressure levels in the burner manual.
Part Item Denomination Pcs. Weight/pcs
1 A70232 DR HEATER A1500 RADIATION SHIELD 8 17,1
2 A70700 STRIP FOR DR HEATER A1500 RADIATION SHIELD 8 1,5
3 A70233 DR HEATER A1500 OUTER JACKET ZN 6 17,8
4 A70333 DR HEATER A1500 OUTER JACKET ZN UPPER PL 1 18,2
5 A70334 DR HEATER A1500 OUTER JACKET ZN LOWER PL 1 17,3
6 A70240 DR HEATER A1500 FURNACE ASSEMBLY 1 128,1
7 A70251 DR HEATER A1500 BASE 2 23
8 A70597 DR HEATER A1500 NAMEPL ANTTI 2 5,4
9 A76456 DR HEATER A1500 SUCTION CONE 1 74,4
10 GAS BURNER 1
11 A76469 DR HEATER A1500 RAIN COVER BURNER 1 18
12 A70244 OUTLET CONE A1500 FOR D1250 HEATER accessory 1 56,2

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Installing the heater
PURSUED CONFIGURATION
The normal operating environment of the unit is an element silo dryer made from steel with a vacuum heater for
generation of heat. A grain dryer of section type is located inside the building, and the inlet and outlet air ducts are
located on the opposite sides of the dryer building.
The heater can be placed in such a manner that the air will be conducted through the air duct into the dryer's air
channel. Alternatively, the air duct can be extended down to the ground, which makes it possible to connect the
heater directly to the dryer.
The debris pipe from the pre-cleaner must be equipped with a cyclone or equivalent for separation of debris. The
separator must be located on the same side with the outlet air duct or entering of dust or debris into the suction
opening of the heater must be prevented by some other means.

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INSTALLATION
Safety instructions and regulations
The installation of the dryer heater must be carried out by a skilled electrician and a gas appliance tter with relevant
authorisations, in the presence of a person, who is familiar with the installation procedure of the dryer machinery.
The permissions required for the building work and connecting the gas appliances need to be applied from, for
example, the gas supplier. Contact the local building authorities for additional information.
Selecting the installation location
The distance to the other buildings, and location of the debris pipe in the dryer, restrict the selection of the location.
The outlet air pipe must be located on the opposite side of the burner, and access of any debris or dust into the
suction net must be prevented.
Components to be installed in front of the gas burner
Depending on the requirements and conditions, either all or only part of the following components will be needed:
- pressure gauge before the pressure reducer
- gas meter
The electric and gas installations shall be exclusively assigned to persons with su󰀩cient skills and valid authorisation.
The permissions required for the building work and connecting the gas appliances need to be obtained, for example,
from the gas supplier. Contact the local building authorities for additional information.
A diagram for connecting the actuators of the burner is delivered with the gas burner. The instructions for connect-
ing them to the control centre of the dryer are delivered with the centre.
Gas reservoir/connection
Consult the local municipal authorities for valid regulations for the gas reservoir and the gas connection. Turn to
the supplier of gas for more information.
NOTE! DEBRIS IN THE SUCTION AIR OF THE HEATER CONSTITUTES A FIRE HAZARD!
THE HEATER MUST BE LOCATED IN A PLACE WHERE ENTERING OF DEBRIS IS PREVENTED.
THE BURNER MUST BE PROTECTED AGAINST WATER. ANY DAMAGE, CAUSED BY WATER, IS NOT
COVERED BY THE GUARANTEE!

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For a gas heater, the heater room must be provided with an opening of at least 2 times the size of the suction
air opening. This opening can be provided with doors, which are mechanically secured to remain open during
the drying process. The doors can also be provided with an electric limit switch, which enables the burner to
be in operation only while the door is in the open-position. The limit switch shall be connected in series with the
vacuum switch.
To ensure unobstructed ow of inlet air, you must provide at least one metre of free space at the sides and above
the suction nets.
The burner shall be provided with an unobstructed supply of combustion air at all times. The distance from the
burner's rear part to the doorway must be less than 0.5 m.
The area of the suction air openings for the gas-fuelled heater for dimensioning the opening in the
heater room:
The heater 400-1500 kW:
- Area of the suction air opening for the heater 2.3 m²
- Size of the opening in the heater room: at least 4,6 m²
The heater 1500-3000 kW:
- Area of the suction air opening for the heater 4.9 m²
- Size of the opening in the heater room: at least 9,8 m²