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attaching the control panel to the wall are
included. This package also contains the
following:
- The warranty documents and this technical
information manual for the installation and
maintenance of the unit.
- A gas conversion kit and an adhesive label.
- The paper template to be used for the
installation.
b) The standard accessories: this box contains
the following material:
WR and WD versions for ceiling installation
- The ducts and terminals for the exhaust of
the combustion products and the intake of
the combustion air supply.
- Two clamps with a silicone gasket for
holding the ducts.
- Two aluminum tubes, with a diameter of 70
mm and a length of 40 cm, to be used as a
sheath when going through the outside wall.
W Version for wall installation
- The flues and terminals for the exhaust of
the combustion products and the intake of
the combustion air supply. They are
equipped with a flange for mounting them
on the rear of the unit.
- A ceramic fiber gasket for the intake duct’s
mounting flange.
- Screws for installing the ducts and their
flanges.
1.6 ACCESSORIES SUPPLIED ON REQUEST
In addition to the material described above, the
following accessories can also be supplied on
request:
- For all versions
- Straight flues that are 0.5 and 1 meter long
and a 90° elbow, all of which have a diameter
of 60 mm. They come complete with
connecting clamps. They are used to
construct air intake ducts and exhaust flues
up to the maximum length of 3 + 3 meters.
- For the WR and WD versions for ceiling
installation
- Air lock with inside/outside air intake plenum
system, available in a manual or motorized
version.
- Intake grille for the above air lock, with the
possibility of installing an air filter.
- For the WR version for ceiling installation
- Rear base for covering the connections.
- For the WD version with ducts for ceiling
installation
- Air delivery plenum system designed to use
insulated flexible pipes with a diameter of
200 mm.
- Insulated flexible pipes with a diameter of
200 mm for distributing heated air. They
come in a package that contains 6 meters of
flexible pipes.
- Clamps for tightly connecting the insulated
flexible pipes.
- 135° Y-branch for use with the insulated
flexible pipes.
- Heated air delivery outlets with adjustable
fins, air lock and plenum system with a
connector that has a diameter of 200 mm.
- Circular diffuser that has a diameter of 200
mm, to be installed on the ceiling, with
calibration air lock.
- Grille for passage under doors, 400 x 150 mm.
1.7 APPLICATION
The W, WR, and WD gas-fired air heaters are
units that were developed for creating small or
medium autonomous systems for winter heating
in residential or commercial buildings,
restaurants, bars, etc.
These systems are especially suitable for use in
the field of building renovation, because the
remodeling of building units as residences, offices,
stores, or workshops is complicated by a series of
technical and structural problems that make it
difficult to install a traditional heating system.
These systems represent a new alternative to
the traditional gas-fired heating systems. They
combine high heating efficiency with low
operating costs. This is especially true in rooms
that are occupied only during set hours where
the gas-fired air heaters’ feature of having a very
low thermal inertia permits their operating time
to be considerably reduced, resulting in
considerable energy savings.
It is possible to create modular systems (i.e.,
systems made up of one or more units) with the
W, WR, and WD gas-fired air heaters to satisfy
the heating needs of buildings such as apartments,
stores, offices, restaurants, and workshops.
Therefore it is necessary to evaluate the heat
dispersion of the room or rooms, the extent of
solar radiance, and any free supply of heat, and
thus the required thermal power. Then it will be
necessary to choose the amount and type of
units based on values such as the air capacity
and the available pressure.
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8. REPLACING PARTS
Since specific technical skills are required to
replace the parts listed below, it is
recommended to advise the user to always
contact skilled technical personnel. For safety
and quality reasons, it is recommended to
use original spare parts when replacing
components.
WARNING! All the following operations must
be carried out while the heater is turned off,
and disconnected the gas and electric
supplies.
8.1 CONTROL EQUIPMENT
Disconnect the cables by pulling on the terminals
and extracting the connectors, releasing them
first from the special retainer. Replace the
equipment and attach it using the two self-threading
screws. Insert the terminals and the connectors
into their respective positions (fig. 25).
8.2 FUSES
Remove the blown fuse from the printed circuit
on the electrical board inside the air heater.
Replace it with a new fuse (5 x 20 - 2 Amps -
instantaneous type) by exerting slight pressure
until it enters its position.
8.3 GAS SOLENOID VALVES
Disconnect the electric connection on the gas
unit. Remove the two screws that attach the
metal support block of the coils and remove it
from the housing. Pull out the coil(s) from the unit
and replace them with new ones. Replace the
metal support block in the correct position and
tighten the fastening screws. Re-establish the
electrical connection (fig. 26).
necessary to replace the panel. Because these
are electronic components, do not attempt
repairs on the panel’s printed circuits.
b) The differential pressure switch stops the burner
because the flue gas expeller fan’s capacity is
not correct due to an obstruction in the ducts
or to the ducts being too long.
-
Remove any obstructions and/or check the
length of the ducts in accordance with what is
indicated in point 4.2.2.
Fig. 25
CHANGING THE CONTROL EQUIPMENT
Equipment casing
Connectors and terminals
for the electrical connections
Summary of Contents for W
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