Viessmann VITOROND 200 VD2A-125 Installation Instructions Manual page 17

Vitorond 200, VD2A Series Installation
Cast Iron Section Assembly
Arrow
pointing
to rear
(continued)
Arrow
pointing
up
1. Check both nipple ports for burrs, and if necessary,
remove burrs with a half round file A.
Never apply file in an in-and-out motion on the nipple
port, only in a circular motion on the push nipple port
sealing area. Clean the nipple ports with solvent and
dry properly.
2. Lift rear section onto the boiler base.
Make sure the section legs are in the base channel.
Properly position rear section and secure against
tipping B.
1. Clean all push nipples with solvent, dry and paste
one half of the nipple with supplied linseed oil and
graphite based sealant B (mix the graphite before
using).
2. Insert push nipples into nipple ports and secure with
gentle hammer taps (wood or rubber mallet only).
Ensure push nipples are inserted evenly by tapping
in cross-wise fashion.
3. Paste second half of the nipple with supplied linseed
oil and graphite based sealant B.
IMPORTANT
To ensure no leaks, steel push nipples must be lubricated
by using linseed oil and graphite based sealant B.
1. Lay each section flat, gasket side facing up A.
Apply supplied "Soudal" silicone B into grooves
while section is laying flat. The first intermediate
section requires sealing only on second and third
pass, as shown in Fig. 15.
IMPORTANT
Each intermediate section has arrows on sides of the
casting. The arrows must be pointing up when laying flat
and during assembly they must point to the rear of the
boiler.
2. Align the prepared intermediate section with push
nipples on the rear section. Using a pry bar, make
sure that the push nipples are evenly inserted into
the intermediate section.
IMPORTANT
For all sections, clean nipples with solvent and apply
supplied linseed oil and graphite based sealant.
IMPORTANT
During the entire compression procedure, all threads on the
draw tool assembly must be properly lubricated with the
supplied linseed oil and graphite based sealant before use.
Set-up
17