Installation; Installation Sequence; Exhaust Flue/Combustion Design - Accorroni MEC MIX C Technical Information

6. INSTALLATION

This chapter refers to the MEC MIX F and MEC MIX C
Hydro Installation work and outlines the procedure and
warnings about all the operation to be carried out.
6.1 THIS CHAPTER REFERS TO THE MEC MIX F
AND MEC MIX C
The installation works shall be carried out by qualified
operator, as required and defined by the local
regulation.
Fail the installation may cause damage and injuries
to people, animals and the facility and the unit
manufacturer cannot be considered guilty nor
responsible in this case.
Refer to local regulation about:
- fire prevention
- design, construction and maintenance of the
heating plant
- energy saving construction and plant directive
2002/91/CE
- safety of gas-burner heating system installation
- safety of electric plant for gas-burner heating
system
The heater unit installation shall be done in
compliance with the following guidelines:
- the rear of the unit shall be placed at least 33 cm
from the wall to ensure enough air flow rate.
Beside clearance is shown in picture 15 as well
- the minimum clearance from the bottom of the unit
shall be 50 cm to allow maintenance operations
- the unit shall be installed at 2.5-3.5 m from the
floor for best performances (Fig. 15 A/B). At lower
height the air flow may annoy people standing in
the room. At higher height the unit would mainly
suck the air from the ceiling and it wouldn't
warm the air people can feel, thus causing
discomfort condition. To the aim of maximizing the
heater's efficiency and comfort, the following rules
are recommended:
- avoid the air stream affects directly the people
- consider eventual obstacle to the air stream
(column, shelves, walls, etc)
- in case of large area treated and more than one
Heater are installed, preferably install the units
alternatively on opposite walls and displaced, not
in front of each other (see picture 16)
- preferably place the heater next or above/ below
the door and windows, in order to stop the
convective cool air forming near the window and
the cold air entering the room through the door
while open. Do not install the MEC MIX COND in
humid environment, like in greenhouse, because
they aren't protected against high humidity
SECTION C - HYDRO INSTALLATION

6.2 INSTALLATION SEQUENCE

The gas piping, the electric power supply cabling and
the exhaust flue shall be in compliance with the plant
design, following the local regulation.
1. Visually check the good's package isn't Damaged
before open it. In case, immediately claim to the
carrier company. A2B Accorroni E.G. ensures the
goods are delivered in good condition.
2. Fix the unit's holder following the instruction given
in the manual
3. Use the screws and bracket delivered with the
unit
4. Ensure the gas supply meets the requirement in
terms of gas pressure
Natural gas
Check out if the pressure of the power supply is
20mbar (204 mm H2O) (tolerance between 17 mbar
and 25 mbar).
L.P.G. (mix from Propane and Butane)
It is necessary to install a pressure reducer close to
the liquid gas tank 1,5 bar and another reducer on the
second sector from 1,5 bar to 37mbar (tolerance 20
mbar - 45 mbar).
5. Ensure all required pressure regulator and
valves (including gate valve) are installed.

6.3 EXHAUST FLUE/COMBUSTION DESIGN

The MEC MIX is certified to be installed in the following
configurations:
- type C13: splitted or coaxial combustion air duct
and exhaust flue throughout the wall. The heating
system is fully hermetic versus the heate room
(Fig. 18 splitted, Fig. 19) or coaxial (Fig. 20)
- type B23: the combustion air is taken from the
heated room whilst the exhausts are ejecte
outdoor by means of either horizontal or vertical
flue. The heating system isn't fully hermetic
versus the heated room (Fig. 23 and 24) or roof
installation with vertical pipe (Fig. 25 and 26).
- type C53: splitted combustion air duct and
exhaust flue but oriented far from each other.
For example the air intake through out the wall
and the exhaust flue throughout the roof. The
heating system is fully hermetic versus the
heated room (Fig. 21 and 22).
- type C33: splitted or coaxial combustion air
duct and exhaust flue through out the roof. The
heating system is fully hermetic versus the
heated room (Fig. 27).
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