6
Installation
Logano plus GB402 - Subject to technical modifications!
23
6.5.3
Connecting the return
B
Undo the threaded flange from the return line.
B
Fit the threaded flange to the return line (on site)
(
Æ
Tab. 8, page 21).
B
Insert a gasket between the flange on the boiler and the
threaded mating flange on the return line.
B
Secure the flange connection with 4 screws, washers
and nuts.
Fig. 17 Fitting the return (RK)
Connection the diaphragm expansion vessel (DEV)
To safeguard individual boilers, a DEV can be connected
to the ¾ inch connection on the return, in accordance
with EN 12828.
B
Install the DEV on site to maintain the system pressure
in the return, upstream of the pump.
Connecting the drain & fill valve on site
B
Install a drain & fill valve in the return.
6.5.4
Installing a DHW cylinder
Make the connection of a DHW cylinder to the flow
and return on site. The MC10 + BC10 control unit can
switch the required external cylinder primary pump
(
Æ
MC10/BC10 instructions).
We recommend fitting a dirt filter (accessory)
on site to the return to prevent contamination
on the water side.
