HAMECH DTR KWH
8
•
the value Q is calculated as the sum of thermal powers of all boilers
•
optimum funnel height (calculated for sea level) should be taken from the
Table 1.
•
for locations above sea level the value from the Table 1 should be
increased by 0,2 m for each 100 m above sea level.
•
Finally, check all connections for leakage and complete paint coat.
4.2. Additional information
Boiler should be located in the boiler-room so as it could be easily operated,
cleaned, assembled and disassembled. For this purpose distance between
boiler’s front wall and boiler-room wall for manually fed boilers should be by 0,5
m greater than boiler’s length but not less than 2,0 m.
Distance between boiler’s rear wall and any obstacle should allow for easy
opening of cleaning door. For its proper work the boiler must be placed at the
same height as foreseen in heating system design.
5.0. OPERATION MANUAL
5.1. Start-up
Firing-up of the boiler may be started after checking if the boiler and heating
system contains sufficient quantity of water i.e. if the expansion vessel contains
water – 100 mm above vessel’s bottom is quite enough (it may be done using
the signalling pipe). Check if all cleaning flaps are mounted and closed,
especially rear wall cleaning flap. Firing-up should proceed slowly. Flue gate
should be entirely open, sufficient quantity of air should be supplied through
the ash door. The boiled is fired-up using wood laid on the grid. After the wood
catches flame, add gradually fuel and fill the combustion chamber (i.e. start the
AZSD).
5.2. Operation (withot pre-furnace)
Boiler’s capacity adjustment (= outlet water temperature) should be done
through proper positioning of the ash door (9) flap, applied for supply of air
under the grid; quantity of air depends on boiler‘s thermal load. During initial
combustion phase carbon monoxide is burnt only partially, thus secondary air
should be supplied to the combustion chamber through the grid door (7)
installed in the upper part of the boiler. If the boiler is fired with thicker coal
(smaller billets or thick cobble) then it is recommended to fill the furnace
entirely and to control combustion speed with air quantity supplied under the
grid through the ash door flap.
Before each next fuel charge remove ash and slag from the grid; during this
operation the flue gate should be entirely open.
In the course of boiler operation observe industrial safety rules and check
indications of measurement gauges i.e. check if boiler’s working parameters
are not exceeded.
