Grill'D Dubravo, Installation And Operation Manual

Page: 33 / 78

33
Firebox as well as other critical elements of the heater, is made of rolled steel of the required
thickness that can withstand any estimated loads. High-alloyed corrosion-resistant steel is
used for the above heater elements in Pro models.
The effective design for heating up the stones and the steam room is due to numerous bends,
heat-conducting structural elements, which increase the heat dissipation area. Also, air
convection between the heater firebox, radiators, and protective shield plays a significant role.
Heater models of Long version are equipped with extended heating flue that allows the
heater to be fired from the adjacent room. Some of the Grill’D heater models of Long version
are equipped with a telescopic heating flue, which allows adjusting the length of the flue
depending on the wall thickness.
Note: dimensions of heaters with a telescopic heating flue are shown in Table 1 and
Appendix 1 as a range of values.
All heater models can be optionally equipped with special reinforcing devices (refer to Appendix
4) made of heat resistant high-alloyed corrosion-resistant steel, that enhance combustion and
additionally protect the heater firebox from destruction due to exposure to high temperature.
The devices have ducts for supplying additional combustion air, and when it enters the firebox,
the air passes partially above the fire into its upper part, where post-combustion of flue gases
occurs. Additional heat is generated during this process, thus enhancing the heater’s efficiency.
There is a grate at the bottom of the heater (refer to Appendix 4). Ash falls through the sheets
of the grate into the ash drawer, which allows convenient cleaning of the heater without
interruption of burning. The grate is one of the most thermally loaded parts of the heater, it is
fabricated of high duty rolled steel with a thickness of 5 mm
The heater firebox door is fabricated of steel and thermal glass (except the mini
models). The door opening angle is sufficient for convenient loading of fuel and allows visual
monitoring of the burning process due to the availability of the glass. The outer surface of the
heater is covered with anti-corrosion heat- resistant enamel.
IMPORTANT! Unauthorized modification of the heater is prohibited. The manufacturer
reserves the right to make modifications to the design of the heater that do not impair its
consumer properties.
2.3. Heater commissioning
It is recommended to carry out a preparatory stoking of the heater prior to operation.
Compound for metal protection and volatile components of the heat-resistant enamel
evaporate as a result of heating up.
IMPORTANT! Stoking to be carried out outdoors, away from combustible surfaces and
materials, in compliance with fire safety measures and safe work practices.
1.
Remove
all packing elements, stickers, magnets, if available.
2. Install a portion of chimney stacks vertically (about 2 meters).
3.
Put 3-4 logs
on the grate in such a way as to ensure free access of air to the combustion
area: lay the firewood loosely, adjust the ash drawer gap to be within 50 mm.
4.
Ignite
the firewood loaded into the firebox. The preferred ignition method is using birch
bark, wood chips and other natural materials, or using paper or throwaway newspapers.
5.
Close the door
.
6. Partly close the ash drawer after heating up of the chimney and development of stable
draft (usually after burning of the first load of firewood in approximately 30-45 minutes),
leaving a gap within 10 mm. It is necessary to constantly ensure sufficient draft, while
avoiding the development of excessive one (it can manifest itself as humming of the heater,
too erratic flame) that leads to heating of the firebox red hot, which significantly reduces
the heater service life. Control the draft by adjusting the ash drawer gap.