VOKERA syntesi e series, Инструкция по установке и обслуживанию

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18
e
5.8 FINAL FLUSHING OF THE HEATING SYSTEM
The system shall be flushed in accordance with
BS 7593. If a cleanser is to be used, it shall be
from a reputable manufacturer* and shall be
administered in strict accordance with the
manufacturers instructions.
*Both Sentinel and Fernox manufacture products
that have proved suitable for use with Vokera
appliances. Vokera Ltd. cannot comment on the
suitability of any other such product with our
appliances.
5.8.1 INHIBITORS
See Section 3 “general requirements”.
5.9 SETTING THE BOILER OPERATING TEM-
PERATURE
The flow outlet temperature can be adjusted
between 40
°
C - 80
°
C via the Heating thermostat
knob (see fig.1).
5.9.1 SETTING THE DOMESTIC HOT WATER TEM-
PERATURE
The DHW outlet temperature can be adjusted
between 40
°
C - 65
°
C via the Hot Water
thermostat knob (see fig.1).
5.10 SETTING THE SYSTEM DESIGN PRESSURE
The design pressure should be a minimum of 1
bar and a maximum of 1.5 bar.
The actual reading should ideally be 1 bar plus
the equivalent height in metres (0.1 bar = 1 metre)
to the highest point in the system above the base
of the appliance (up to the maximum of 1.5 bar
total).
N.B. The safety valve is set to lift at 3 bar/30
metres/45 psig.
To lower the system pressure to the required
value, pull lever on head of safety valve to release
water until the required figure registers on the
pressure gauge (see fig. 1).
5.11 REGULATING THE HOT WATER
The appliance is fitted with a flow rate restrictor
that limits the maximum flow rate that can be
drawn through the appliance.
Syntesi 25 e
8-litre 9-litre
(Orange) (Blue)
Fitted Spare
The restrictor eliminates the need to manually
adjust the DHW flow rate. However if it is felt
necessary to further increase or decrease the
available flow rate, spare restrictors are included
in the accessory pack.
The spare flow rate restrictors can be fitted to
either increase or decrease the maximum flow
rate. The tables above denote the size of restrictor
fitted and the spare restrictors supplied in the
accessory pack. Each restrictor is colour-coded
to enable identification.
5.11.1 CHANGING THE FLOW RESTRICTOR
Refer to 6.19 for detailed instruction on changing
the flow restrictor.
5.11.2 REGULATING THE CENTRAL HEATING
SYSTEM
Fully open all radiator and circuit valves and run
the appliance for both heating and hot water until
heated water is circulating. If conditions are warm
remove any thermostatic heads. Adjust radiator
return valves and any branch circuit return valves
until the individual return temperatures are correct
and are approximately equal.
5.12 FINAL CHECKS
●
ENSURE ALL TEST NIPPLES ON THE
APPLIANCE GAS VALVE HAVE BEN
TIGHTENED AND CHECKED FOR
SOUNDNESS.
●
ENSURE THE APPLIANCE FLUE SYSTEM
IS FITTED CORRECTLY AND IS PROPERLY
SECURED.
●
ENSURE ALL PIPE WORK IS RE-CHECKED
FOR SOUNDNESS.
●
RE-FIT APPLIANCE CASING.
●
COMPLETE APPLIANCE LOGBOOK.
Complete details of the boiler, controls,
installation, and commissioning in the logbook
supplied with the boiler. This is an important
document, which must be correctly completed
and handed to the user. Failure to install and
commission the appliance to the manufacturers
instructions may invalidate the warranty.
Fig. 19
Protective
cap
Outlet
test-point
Inlet
test-point