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TECHNICAL INFORMATION
3. Technical information
3.1 Description of the boiler
water cooled reversing elbows and through the second pass compartment into the front reversing chamber. The th-
Max-3 plus (420-1250) type
3.1.1 Max-3 plus (420-2700) complies with the following directives + standards
We hereby declare that the product described, as an individual appliance, complies with the standards, guidelines
Directives: 90/396/EG «Gas appliance directive»
73/23/EWG «Low voltage directive»
89/336/EWG «Electromagnetic compatibility directive»
97/23/EG «Pressure equipment directive» (PED)
Regulations: Stability prEN14394:2001
Constructional requirements EN303-1, EN303-2, EN303-3
Low voltage DIN VDE 0722 / Ed. 04.83
EMV EN 50082 Part 1 / Ed. 01.92
ird pass compartment comprises a bank of special dimpled Rillenrohre tubes through which the flue gases are con-
ducted to the flue gas collector. Regulators are also fitted in the third pass tube bank.
The Max-3 plus boiler is a three pass design. The flue gases flow from the cylindrical combustion chamber into the
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