Bosch ZSB18 - 2A Installation And Servicing Instructions page 27

AU/NZ
Hanging the boiler
CAUTION: Caps or plastic strip fitted to
pipes must be removed before hanging the
boiler.
B Hang the boiler on to the wall mounting frame by the
two brackets positioned left and right at the top rear
of the boiler.
Do not lift the boiler by the air gas manifold. There are
two handling holes incorporated into the inner casing
left and right in the lower section of the boiler.
Fig. 28 Hanging the boiler
NOTE: The pressure relief connector must
be repositioned after the boiler has been
correctly mounted to the wall mounting
frame.
To ease assembly of components, apply
silicone lubricant to sealing surfaces.
PRV connection
1. Push the lever on the pressure relief connector UP
until the stop on the inside of the handle is over the
shoulder of the metal bracket to secure in place.
Fig. 29 PRV in the up position
6720643895-22.1Wo
1.
B Remove the screw from the control panel retaining
bracket and lower the control panel into the service
position.
B Make connections to the heating system.
Connect the gas supply to the boiler gas isolation
valve ¾ inch BSP compression fitting.
Expansion vessel connection
To connect the expansion vessel flexible pipe to the
hydraulic manifold situated to the left of the pump:
B Remove and discard the plastic cap from the
expansion vessel flexible pipe.
1. Refer to figure 30, release the retaining clip.
2. Remove and discard the orange plastic blanking plug
from the pressure vessel connection at the hydraulic
manifold.
Fig. 30 Blanking plug
1. Refer to figure 31 and insert the expansion vessel
flexible pipe it to the fitting on the pump.
2. Secure in place with the wire retaining clip.
2.
Fig. 31 Expansion vessel hose connection
B Connect the pressure relief drain pipe to ½ inch BSP
joint using the compression nut and olive supplied in
the literature/hardware pack.
Installation | 27
2.
1.
6720645222-05.1Wo
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6 720 646 195a (2010/11)