Ariston Clas 24 FF, Инструкции по установке и обслуживанию

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11
installation
Gas Connection
The local gas region contractor connects the gas meter to the
service pipe.
If the gas supply for the boiler serves other appliances ensure that
an adequate supply is available both to the boiler and the other
appliances when they are in use at the same time.
Pipe work must be of an adequate size. Pipes of a smaller size than
the boiler inlet connection must not be used.
Water Connections
View of the Boiler Connections
Legend:
A = Central Heating Flow
B = Domestic Hot Water Outlet
C = Gas Inlet
D = Domestic Cold Water Inlet
E = Central Heating Return
F = Safety Valve Outlet
H = Drain valve
Central Heating
Detailed recommendations are given in BS 6798:1987 and
BS 5449-1:1990, the following notes are given for general
guidance.
Pipe Work:
Copper tubing to BS EN 1057:1996 is recommended
for water pipes. Jointing should be either with capillary
soldered or compression fi ttings.
Where possible pipes should have a gradient to ensure air
is carried naturally to air release points and water fl ows
naturally to drain taps.
The appliance has a built-in automatic air release valve,
however it should be ensured as far as possible that the
appliance heat exchanger is not a natural c o l l e c t i n g
point for air.
Except where providing useful heat, pipes should be
insulated to prevent heat loss and avoid freezing.
Particular attention should be paid to pipes passing through
ventilated spaces in roofs and under fl oors.
By-pass:
The appliance includes an automatic by-pass valve, which
protects the main heat exchanger in case of reduced or
interrupted water circulation through the heating system,
due to the closing of thermostatic valves or radiators.
System Design:
This boiler is suitable only for sealed systems.
Drain Cocks:
These must be located in accessible positions to permit the
draining of the whole system and should be fi tted at all low
points. The taps must be at least 15mm nominal size and
manufactured in accordance with BS 2870:1980.
A B
C
D E
F
H
A C E
F
H
CLAS 24/30 FF
CLAS SYSTEM 21/28 FF
Fig. 8