Installing The Boiler; Contents Of Pack; Boiler Dimensions And Gas Water Connections; Instructions Prior To Installation - DeDietrich MPX 28/33 BIC Instruction Manual

INSTRUCTIONS PRIOR TO INSTALLATION

The following notes and instructions are addressed to installers to allow them to carry out trouble-free installation. Instructions for
igniting and using the boiler are contained in the "Instructions for Users" section. The installation must satisfy the requirements of
UNI and CEI standards and local by-laws and technical regulations.
Moreover, the installation technician must be qualified to install heating appliances. Additionally, bear in mind the following:
• When installing the unit in environments with temperatures lower than 0°C, take the necessary precautions to avoid the
formation of ice in the siphon and in the condensation drain.
• The boiler can be used with any kind of convector plate, radiator or thermoconvector. Design the system sections as usual,
though, bearing in mind the available capacity-head at the plate (see annex "SECTION" E at the end of this manual).
• Initial ignition of the boiler must be carried out by the Authorised Service Centre (as indicated on the attached sheet).
Failure to observe the above will render the warranty null and void.
Do not leave any packaging (plastic bags, polystyrene, etc.) within the reach of children as they are a potential source of danger.

9. INSTALLING THE BOILER

The template outline is shown in annex "SECTION" C at the end of this manual.
After deciding the exact location of the boiler, fix the template to the wall. Connect the system to the gas and water inlets present
on the lower bar of the template. Make sure the rear part of the boiler (back) is as parallel as possible to the wall (otherwise,
shim the lower part). Fit two G3/4 taps (flow and return) on the central heating circuit; these taps make it possible to carry out
important operations on the system without draining it completely. If you are either installing the boiler on an existing system or
replacing one, as well as the above, fit a settling tank under the boiler on the system return line in order to collect any deposits
and scale circulating in the system after flushing. After fixing the boiler to the template, connect the flue and air ducts, supplied
as accessories, as described in the following sections. Connect the siphon to a drain trap, making sure the slope is continuous.
Avoid horizontal stretches.
Do not lift the boiler exerting pressure on the plastic parts like the siphon and the flue turret.
Tighten the boiler water connections with care (maximum tightening torque 30 Nm).
Before starting up the boiler, fill the water siphon to prevent the fumes from diffusing in the room.

9.1 CONTENTS OF PACK

• Template (see figure in attachment "SECTION" C)
• Boiler support bar
• 8 mm expansion grips and pressure screws
• Condensation discharge pipe
ACCESSORIES supplied on request:
• Heating system flow/return taps, water input tap and telescopic joints
• Gas tap

9.2 BOILER DIMENSIONS AND GAS WATER CONNECTIONS

The dimensions of the boiler and the relative installation positions of the water connections are shown in the annex "SECTION"
C at the end of the manual.
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