Layout Of Boiler; Operating Principle - Rendamax R40 Notice D'installation Et D'emploi

Construction

Layout of boiler

Operating principle

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Operating principle
The R40 is a fully modulating boiler.
The control unit of the boiler adapts
the modulation ratio automatically to
the heat demand requested by the
system. This is done by controlling the
speed of the fan. As a result, the Whirl-
wind mixing system will adapt the gas
ratio to the chosen fan speed, in order
to maintain the best possible combus-
tion figures and therewith the best effi-
ciency. The flue gases created by the
combustion are transported downwards
through the heat exchanger
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and leave the boiler at the top into the
chimney connection.
The return water from the system
enters the boiler in the lower section,
where is the lowest flue gas tempera-
ture in the boiler. In this section
condensation takes place. The water
is being transported upwards through
the heat exchanger, in order to leave
the boiler at the flow connection. The
cross flow working principle (water up,
flue gas down) ensures the most
efficient combustion results.
Layout of boiler
The R40 boiler consists of the following
main components:
1 Casing
2 Control panel
3 Flue gas connection (+ test point)
4 Air intake connection (+ test point)
5 Flow water connection
6 Return water connection
7 Gas connection
8 Syphon
9 Input for wiring
10 Connection for safety valve
11 Connection for fill/drain valve
12 Manometer
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13 Fan
14 Gas valve
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15 Ignition and ionisation electrodes
16 Heat exchanger
17 Inspection window
18 Ignition transformer
19 Electrical input connections
20 Controller
21 Condensate receptacle
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The LMS14 control unit can control the
boiler operation based on:

Boiler control (stand alone operation);

weather compensated operation
(with optional outdoor sensor);

with 0-10V external influence

(temperature or capacity) from a

building management system.