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The boiler block is always installed from the back
forwards, i.e. the rear section (
installed first, and the front section (
always installed last.
When assembling, observe the installation direction
arrows (
Fig. 6, [7]) for each boiler section.
Make sure you position the middle section with the
upper flow connection (
Install the boiler block according to the following
instructions and illustrations.
The installation aid is available on request.
Fig. 7
Rear section with fitted installation set
4.4.2
Joining the boiler block assembly
Preparation of boiler sections
B Remove nuts and washers from the studs on the hubs
of the boiler sections before attaching the rear
section and front section.
B Put the rear section in place and prevent from falling
over using the installation aid (
separate installation aid instructions).
UNI 7000 F
Fig. 6, [3]) is always
Fig. 6, [8])
Fig. 6, [4]) correctly.
see Fig. 7 and
B File down any burrs on the hubs.
Fig. 8
Deburring the hub
B Clean the packing grooves where required using a
wire brush and cloth.
WARNING: Danger of burning from
flammable cleaning agents.
B Observe the cleaning agent safety
instructions.
B When using cleaning agents, avoid naked
flames, incandescence and sparks.
B Clean the hub sealing faces with a rag soaked in white
spirit.
B Evenly coat the hub sealing faces with sealant.
The next step involves preparing the nipples
that will eventually seal the boiler sections.
Installation | 13
6 720 803 940 (2010/03)
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