Ferroli BLUEHELIX TECH RRT 34 C Manual page 12

Isolation valve kit
The isolation valves supplied (see fig. 20) must be installed between the boiler and heating system to allow the boiler
to be isolated from the system if necessary.
fig. 20 - Isolation valve kit
Important
B
Connections to the boiler must be made in such a way as to ensure that its internal pipes and fittings are free
of stress. If a pressure reducing valve C/W non-return is installed to the boilers cold water supply it must be
situated at least 3 metres from the boiler or a mini expansion vessel suitable for potable water, & correctly
sized, may be used.
B
Before installation, flush all the pipes of the system thoroughly to remove any residuals or impurities that could
affect correct operation of the unit.
In case of replacement of boiler within existing installations, the system must be completely emptied and
cleaned of any sludge and pollutants. For that purpose only use suitable guaranteed products for heating sys-
tems (see next section), that do not harm metals, plastics or rubber. The manufacturer declines any liability
for damage caused to the boiler by failure to clean the system to BS7593 & correctly dose with an ap-
proved inhibitor.
Make the connections to the respective points (see fig. 20 and fig. 56) as per the symbols on the bottom of the unit.
Antifreeze system, antifreeze fluids, additives and inhibitors
When necessary, antifreeze fluids, additives and inhibitors can be used only if the manufacturer of such fluids or addi-
tives guarantees that they are suitable and will not cause damage to the heat exchanger or other components and/or
materials within the boiler and system. Any products used must be suitable & approved for use within a domestic heating
system & noted within the benchmark certificate, a suitable label must be attached to the boiler indicating the products
used & any COSH advisory information, a warning stating "Do Not Drain" must also be on the label.
12
BLUEHELIX TECH RRT 34 C
A
B
C
D
F
cod. 3541O990 - Rev. 01 - 07/2018
Heating Flow 3/4" (22mm with isolation valve fitted)
DHW outlet elbow 1/2" (15mm with outlet union fitted)
Gas 3/4" (22mm with yellow isolation valve fitted)
Cold water inlet 1/2" (15mm with isolation valve fitted)
Heating Return 3/4" (22mm with isolation valve c/w fil-
ter fitted)
EN