HAMECH DTR KWH
3
1.0. INTRODUCTION
Water boilers type KWH together with woodwaste combustion units AZSD
have been tested in the Research Laboratory for Boilers and Heating Systems
of the Heating & Sanitary Technology Institute in Łódź. The tests have proved
conformity with requirements contained in the Polish Standard PN-EN 303-5
and in the Decree of the Ministry of Economy, Labor and Social Policy dated
on 2.04.2003 concerning requirements for energetic eficiency.
1.1. General information
The purpose of present manual is to acknowledge users and fitters with
construction, working idea, assembly, proper operation and maintenance as
well as transportation and storage of water boilers of KWH type. Before starting
any operation we recommend to acknowledge with present manual and check
if the boiler and its equipment are complete and not damaged during transport.
Non-observance of instructions contained in present manual makes
warranty void.
2.0. TECHNICAL DESCRIPTION
2.1. Application
KWH boilers are designed for operation in central heating gravity systems or in
open systems with forced circulation, and especially as heat exchangers for
AZSD pre-furnaces.
Very low level of emission of pollution to the atmosphere, high efficiency
and stable working parameters makes the KWH+AZSD sets one of the
best in their class.
The highest temperature inside the boiler must not exceed 95° C. The boilers
belong to the group of low-temperature water boilers and need not be
registered in local Technical Supervisory Office.
Protection of the open system should conform with the standard PN-91/B-
02413 concerning protection of open water heating system.
2.2. Technical description (fig.1.)
KWH is a low-temperature water boiler equipped with three-way (four-way)
exhaust gas circulation, fired with hot exhaust gas transferred to the
combustion chamber from a pre-furnace or with solid fuel. The structure is of
bent / welded type. Inside of boiler there are heated water chambers (1) built in
side walls and combustion tubes (2) forming two (three) exhaust gas drafts.
Pre-furnace contains flat water grid (3) made of steel profiles. The grid is also
included into boiler’s water circulation. Angled position of the grid in relation to
