GAS-FIRED CONVECTION HEATERS WITH FAN
W - WR - WD SERIES
Models 8 - 10
Technical information
This manual is divided into three sections:
- SECTION 1 - GENERAL INFORMATION
This contains a description of the heaters and their technical features
- SECTION 2 - TECHNICAL INFORMATION FOR THE INSTALLER
This contains all the instructions that the technical installer must comply with to ensure effective plant
operation
- SECTION 3 - USER OPERATING AND MAINTENANCE INSTRUCTIONS
This section contains all the information needed to use the appliance correctly and to perform
periodic tests
Important notes:
1 - To use the appliance correctly and safely, the installer, the user and the service man, must comply
with what is indicated in this manual.
2 - The word WARNING! is followed by information which, because of its importance, must be carefully
observed and for which non-compliance may damage the appliance and/or reduce operating safety.
3 - The paragraphs written with bold characters contain important information, warnings or
recommendations which should be carefully considered.
4 - The technical data, styling characteristics, components and accessories detailed in this manual are
not binding. Accorroni S.r.l. reserves the right to make changes, at any time, that are considered
necessary to improve the product.
5 - The legal references, standards and technical rules mentioned in this manual are presented merely
for the sake of information and should be considered valid as of the date this manual is printed, as
indicated on the last page. If new regulations or amendments to current laws go into effect, this will
not obligate Accorroni S.r.l. in any way with regard to others.
6 - Accorroni S.r.l. is responsible for ensuring that its product conforms to the laws, directives and
construction standards in force at the time the product is sold. Knowledge and compliance with legal
regulations and standards regarding plant design, installation, operation and maintenance are the
exclusive responsibility of the designer, installer and user.
SUMMARY
SECTION 1 - GENERAL INFORMATION
page
1.
PRINCIPAL CHARACTERISTICS .......................................................................................... 4
1.1
Appliance classification ........................................................................................................... 4
1.2
Certification - EC marking ....................................................................................................... 4
1.3
Functional description ............................................................................................................. 4
1.4
Construction characteristics .................................................................................................... 5
1.5
Package contents ................................................................................................................... 5
1.6
Accessories supplied on request ............................................................................................ 6
1.7
Application .............................................................................................................................. 6
1.8
The use of ducts with the WD version .................................................................................... 7
1.9
Technical data table ................................................................................................................ 7
1.10 Dimensions ............................................................................. - WR and WD versions ......... 8
page 36
Gas-fired convection heaters with fan W / WR / WD series - Models 8 - 10
Technical Information - Code 25259501 GB - Rev. 3 - 10/05/05
WARNING! When the burner turns off, the fan will
continue to operate for a few minutes, to properly
cool the exchanger. Therefore, it is important not
to turn off the air heater using the main switch, that
also cuts off the power supply to the fan, since this
might lead to overheating.
10.4.2 To turn off the air heater for an extended
period of time:
a) set the switch (A) to the “OFF” position
b) after the fan has turned off, disconnect the
electric power supply at the main switch
c) close the gas on-off valve
10.5 SUMMER VENTILATION
During the summer the air heater can be used
for ventilating the room by performing the
following operations to deactivate the burner:
a) Close the gas on-off valve.
b) Activate the electric power supply by means
of the main switch.
c) Turn switch (A) to the “VENTILATION” position
and use switch (F) to select the desired
speed.
d) Turn switch (A) to the “OFF” position to stop
the fan.
11. APPLIANCE MAINTENANCE
11.1 ROUTINE MAINTENANCE TO BE
PERFORMED BY THE USER
It is recommended that the following operations
be carried out at the beginning of each heating
season and then at least once every month
during operation:
WARNING! The operations described in
points a) b) c) and d) must be performed
while the air heater is not functioning, and
with the gas and electric supplies turned off.
a) check that the external terminal of the intake/
exhaust duct is not obstructed or that the
flueing arrangement has not deteriorated
b) Use just a damp cloth to clean the unit’s
external parts. At the most you can use a mild
detergent.
c) Make sure that the air circulation slits in the
remote-control panel (WR and WD) are not
obstructed by dust as this could cause the
room temperature probe to detect incorrect
values. Use a soft brush to clean it.
d) Use compressed air or a vacuum cleaner to
clean the air intake filter (W and WR). The air
filter must be cleaned more frequently if the
unit is installed in a dusty area.
The filter must be cleaned very carefully,
because if it does not function correctly,
the entire unit’s functioning could be
adversely affected.
e) make sure that the operation of the appliance
is normal, as described in point 10.3.
11.2 ANNUAL AIR HEATER INSPECTION
To reduce possible failures to a minimum and to
keep the air heater operating at peak efficiency,
it is recommended that a general inspection of
the air heater be carried out at least once a year
by skilled personnel.
Summary of Contents for W
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