Connecting The Return - Buderus Logano plus GB402 Installation And Maintenance Instructions Manual

▶ Level the fitting manifold and fit maximum pressure limiter [5].
Fig. 14 Installing the fitting manifold
[1] Flow connector
[2] Distribution list
[3] Cap valve
[4] Fitting manifold complete with cap valve ¾ Inch
[5] Maximum pressure limiter
Subject to operating pressure, different safety valves are
required.
▶ At an operating pressure up to 3 bar, seal in the safety valve at the
distributor connector with a suitable sealant.
Fig. 15 Safety valve (up to 3 bar)
[1] Safety valve
Logano plus GB402 – 6 720 804 428 (2012/09)
▶ At an operating pressure of 3 to 6 bar, seal in female connection [4]
and threaded flange [3] at the distributor connector with a suitable
sealant. Secure safety valve [1] with gasket [2] on the threaded
flange.
▶ Fit the blow-off line to the respective safety valve.
Fig. 16 Safety assembly (3 to 6 bar)
[1] Safety valve
[2] Seal
[3] Threaded flange
[4] Female connection

6.5.3 Connecting the return

We recommend the installation a dirt filter in the return
to prevent contamination of the boiler by the water.
▶ Undo the threaded flange from the return.
▶ Fit the threaded flange to the return (on site) ( Tab. 9, page 16).
▶ Insert a gasket between the flange on the boiler and the threaded
flange on the return.
▶ Secure the flange connection with 4 screws, washers and nuts.
Fitting 6
17