16
3. Description of the appliance
Drawing 1. General construction diagram of the replace insert Zuzia with a vertical air heater with
water jacket.
Drawing 2. General construction diagram of the replace insert with water jacket.
The main component of the replace insert with water jacket is its steel water jacket (16) where the
combustion chamber (1) is located. The front wall of the combustion chamber is the cast iron door
(2) equipped with a homogenous heat-resistant glass ceramics (3) and a locking bolt (4). The door is
settled in a cast iron frame (5) screwed to the water body. From the bottom the combustion chamber
(1) is limited by a cast iron base (6) screwed to the water body where an ashpan chamber is located.
Above the base there is a cast iron grate (10) where fuel is burnt. The grate should be placed with its
nning faced upwards. An ashpan cast iron guard (11) protects against spilling of incandescent fuel
from the combustion chamber after opening the door (2) Ashpan waste: ash and residues of unburnt
fuel are accumulated in a sliding ashpan drawer (7) located under the grate. In the front part of the
ashpan drawer a window (8) equipped with a controllable throttle with a handle (9) for controlling
the amount of primary air needed to burn fuel. The secondary air needed to reheat gases arising from
fuel burning and protecting against the blackening of the heat-resistant glass (3) is supplied by the
slot in the upper part of the glass. Over the combustion chamber there are smoke tubes (17) whose
diameter depends on the insert power, welded to lateral inner walls of the water body constituting
natural convection ducts for ue gases ow and simultaneously intensifying the exchange of heat.
During the operation after the re-up of fuel ue gases ow along the combustion chamber walls
between the smoke tubes to the vent connector (12) then through the ue to the chimney. In the
vent connector there is a starting rotationally controlled damper (13). A knob (15) is used to adjust
the angle of the damper opening by a special mechanism (14).
The inlet of circulating water from the system to the replace insert with water jacket takes place by
a lower stub pipes (18). The discharge of heated water from the replace insert to the central heating
system (with water set) takes place also by upper stub pipe (19).
The rest of stub pipes (20) are used to x the temperature sensor (MSK), (21) coil pipe, (22) thermal
valve sensor.
3.1. Selection of the thermal power of central heating system or domestic hot water system
The primary criterion for the selection of the system thermal power is the maximum transient power
of the replace insert water jacket. A central heating system or domestic hot water system may carry
the rated (average) power of the water jacket declared by its Producer when its takeo power is equal
or close to the maximum transient power of the water jacket. Relevant technical data are included
in table 1.
4. Assembly and installation of the replace insert with water jacket
The replace insert should be installed by a person having required qualications. Before starting to
connect the replace insert with water jacket to the central heating and smoke removal system, read
carefully this manual and check the completeness of the appliance equipment.
Before placing the replace insert with water jacket, prepare a foundation minimum 30cm above
the oor (not relevant in all countries, depending on the material and construction of the oor) of
the room where the replace insert with water jacket is to be operated. The appliance placed on the
oor should be carefully leveled and then it should be connected to the central heating and smoke
removal duct, the ttings of the replace insert with water jacket should be assembled.
4.1. The principles of safe installation of the replace insert with water jacke
Health and safety rules, principles of correct and safe assembly of the replace in- sert with water
jacket, ventilation and connection to the ue gas removal system are dened in the Regulation of the
Minister of Infrastructure dated 12 April 2002 DZ.U. no. 75 dated 15 June 2002 in chapter 6 § 265 p.1;
§ 266 p.1; § 267 p.1.
