Spartherm Mini R1V51 Installation Instructions Manual page 17

After completing the heating chamber surface, orifice plates can be pushed
on and permit a clean transition from the combustion chamber opening to
the heating chamber. When installing the heating chamber, take care that
sufficient space is considered for mounting the collimator!
No cladding material may be mounted on orifice plates! A supporting
frame must be provided for mounting the weight load.
Self-supporting beams are connected fixed to the combustion chamber and
are suitable for direct wall mounting. In doing so, the maximum weight load
to be applied is 200 kg Depending on the combustion chamber type, you
have the possibility to readjust the collimator when installed in order to,
e.g., compensate settlements.
We recommend that insulation material, e.g., fibre glass ceramic or 2 mm
fibre glass paper is inserted between the self-supporting collimator and the
body of the heating chamber. This allows minor thermal expansion of the
fireplace insert to be compensated.
Heating chamber bodies with self-supporting collimator should always be
created with fibre glass grating / expansion joints in order to reduce the risk
of expansion cracks!
GB 17
GB