Installation Manual
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MAIN COMPONENTS
KEY
1.
FLUE HOOD
2.
COMBUSTION CHAMBER
3.
ROOM SEALED CHAMBER COVER
4.
ROOM SEALED CHAMBER BACK
5.
HEAT EXCHANGER
6.
FLAT PLATE TYPE EXCHANGER
7.
MULTIGAS BURNER
8.
HEATING SAFETY THERMOSTAT
9.
ELECTRONIC GAS VALVE VK4105
10.
ELECTRONIC IGNITION BOARD
11.
EXPANSION VESSEL
12.
3-SPEED CIRCULATION PUMP WITH AIR VENT
13.
AUTOMATIC AIR VENT
14.
HEATING CIRCUIT 3 bar PRESSURE RELIEF VALVE
15.
WATER PRESSURE GAUGE
16.
FILLING TAP
17.
WATER PRESSURE SWITCH
18.
HEATING SENSOR
mod.
RSF 20 E
19.
HOT WATER SENSOR
20.
3-WAY DIVERTER VALVE
21.
FLOW LIMITER
22.
ELECTRONIC FLOWSWITCH
23.
BY-PASS
24.
AIR PRESSURE SWITCH
25.
FAN
26.
IGNITION ELECTRODE
27.
FLAME IONISATION ELECTRODE
LIMITER
The boiler is equipped with a variable flow limiter at the cold water inlet. The flow limiter can
be adjusted by turning the screw in order to obtain the correct flow rate of domestic hot water
for the specific boiler output.
FLOWSWITCH
This device gives precedence to domestic hot water and is fitted to boilers which supply
instantaneous hot water. It allows conversion to hot water even with a minimum hot water
demand (min. 2 litres), using an electromagnetic principle with electrical switching by means of
a relay. The device is made of non-toxic, corrosion-proof ZYTEL 101 L plastic material which
has type approval with non-toxic characteristics and is unaffected by hard water. In addition, a
filter is fitted before the flowswitch and at the cold water inlet which eliminates any water
impurities. These features guarantee that the flowswitch operation is highly efficient.
mod.
RSF 24 E
BY-PASS
All boilers are fitted with a by-pass. This element is essential in the following cases:
•
if a two-way zone valve is installed
•
if thermostat valves are installed in the radiators.
To adjust the by-pass proceed as follows:
fit the screwdriver to the plastic screw of the by-pass, bearing in mind that when the slot of the
screw is horizontal the by-pass is totally open, allowing all the water to pass, while when it is
vertical the by-pass is totally closed. For partial by-pass flows, use the adjuster screw.
DIVERTER VALVE
The diverter valve is the device which controls the boiler switching from central heating to d.h.
water circuit and vice versa.
the new 3-way valve transparent cover allows to see the operation mode according to the disk
colour: red disk
⇒
heating mode; blue disk
⇒
domestic hot water mode.
The new 3-way valve does not have the middle position function (in case of motor failure);
DIFFERENTIAL AIR PRESSURE SWITCH FOR FAN CONTROL
To guarantee maximum safety in flue exhaust, a differential pressure switch is installed on
room-sealed boilers and on forced draught boilers. This pressure switch automatically controls
perfect functioning of the fan and the passage of both external air and exhaust flue pipes.
mod.
RSF 30 E
DOMESTIC HOT WATER WITH STORAGE CYLINDER – TA05A027.A0504
18
Содержание RSF 30 E
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