Sime FORMAT 34E BF, Руководство пользователя

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2.5 ELECTRICITY SUPPLY
The electrical connection is made to a standard 10 amp 3
pin outlet. It is essential that a positive earth be made for the
satisfactory operation of the boilers.
THIS MUST BE FITTED BY A QUALIFIED ELECTRICAN.
2.6 WATER SYSTEMS - GENERAL
– This appliance is designed for connection to sealed cen-
tral heating water systems.
– Check that the mains water pressure is sufficient to pro-
duce the required D.H.W. flow rate, but does not exceed
the maximum D.H.W. pressure (Table 4).
Where mains pressure exceed 6 bar a pressure reduc-
ing valve must be fitted in the D.H.W. inlet.
2.6.1 Treatment of Water Circulating Systems
The condition of the water in the system is of great impor-
tance. Treatment such as Fernox is recommended to reduce
the effect of sludge and scale on the efficiency of the heating
system.
2.7 REQUIREMENTS FOR SEALED WATER SYSTEMS
The heating system design should be based on the following
information:
a) The available pump head is given in fig. 5.
b) The appliance is equipped with an internal by-pass that
operates with system heads (H) greater than 3 m. The
maximum flow through the by-pass is about 300 l/h. If
thermostatic radiator valves are to be installed, at least
one radiator should be without a thermostatic valve (usu-
ally the bathroom radiator).
c) The following paragraphs outline the specifications of the
items fitted to the boiler.
2.7.1 Pump
The available head shown in fig. 5 is that in excess of the
appliance hydraulic resistance, i.e. that available for the
system at any given heating load up to the maximum out-
put in C.H. mode.
Never reduce the pump speed below maximum as this will
reduce D.H.W. output. The pump speed is indicated on the
side of the pump speed selector switch (if fitted).
2.7.2 System volume (total water content)
The following Table gives the maximum system volume that
the integral expansion vessel can sustain under different
charge pressure conditions.
If the system volume exceeds that shown, an additional expan-
sion vessel must be fitted and connected to the heating system
primary return pipe as close as possible to the appliance.
If an extra vessel is required, ensure that the total capacity of
both vessels is adequate.
0
200 1600 1400 1200 1000 800 600 400
Flow rate (l/h)
A
vailable head (mbar)
500
400
100
200
300
For
mat 3
4I- 3
4E
Fig. 5