Checking The Boiler Water Pressure - Bosch Greenstar ZBR16-3A Operating Instructions Manual

14 | Preparing the appliance for operation
3.2

Checking the boiler water pressure

The standard boiler water pressure is 14.5 - 21.75 psi (1 - 1.5 bar).
Should a higher boiler water pressure be required, refer to a
trained and certified heating contractor.
Fig. 2
2
3
1
30
45
15
psi
0 4
bar
6 720 641 934-04.2O
6 720 644 013 (2011/02)