Benchmark RD 532 combi Installation And Servicing page 65

B The maximum operating pressure of 2.5 bar at maximum
central heating flow temperature must not be exceeded. If the
pressure increases to 3 bar then the relief valve (15) opens.
6 720 610 600 GB (03.06)
Operating the Appliance
2
3
1
4
0
bar
CH
C
8.1
15
6 720 610 600-03.1O
13