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GENERAL INFORMATION
1
GENERAL INFORMATION
1.1
General Safety Information
9
After removing the packaging, check the condition and
completeness of the supply. If there are any problems, con-
tact the company
R
that sold the equipment.
9
This product must be installed by a legally qualified heat-
ing engineer. On completion of the installation, the install-
er must issue the owner with a declaration of conformity
confirming that the installation has been completed to the
highest standards in compliance with the instructions pro-
vided by
R
in this instruction manual, and that it con-
forms to all applicable laws and standards.
9
This product must only be used for the purpose for which it
is designed and made, as specified by
R
.
R
all responsibility, contractual or other, for damage to prop-
erty or injury to persons or animals caused by improper in-
stallation, adjustment, maintenance or use.
9
In the event of a water leak, disconnect the thermal module
from the main power supply, shut off the water supply and
promptly notify the Technical Assistance Service
R
fessionally qualified personnel.
9
Regularly check that the condensate drain is free from ob-
struction.
9
Periodically check that operating pressure in the water cir-
cuit is over 1 bar but below the maximum limit specified for
the boiler. If this is not the case, contact Technical Assistance
Service
R
or a professionally qualified heating engineer.
9
The following operations shall be necessary if the thermal
module is not used for a long period of time:
− Switch the boiler OFF at the control panel
− Turn the main system switch "off"
− Close the fuel cock and heating circuit water cock
− Drain the central heating circuit if there is any risk of
freezing.
9
Maintenance must be performed on the thermal module at
least once a year.
9
This manual is an integral part of the appliance and must
therefore be kept with care and must ALWAYS accompany
the thermal module, even when it is passed on to another
owner or user or transferred to another installation. If it is
lost or damaged, please contact your local Technical Assis-
tance Service
R
for a new copy.
9
This manual must be read carefully so as to ensure the cor-
rect and safe installation, operation and maintenance of
the appliance. The Owner must be adequately informed
and trained on how to operate the appliance. Make sure
that he/she is familiar with all the information required for
safe system operation.
9
The thermal module, before being connected to the hy-
draulic system, the gas network, and the electrical system,
may be exposed to temperatures ranging from 4°C to 40°C.
After it can activate the Frost Protection function, it can be
exposed to temperatures ranging from -20°C to 40° C
9
We recommend cleaning inside the exchanger once a year,
extracting jet and burner and removing any installation de-
bris by suction. This operation should be done by personnel
from the Technical Assistance Service only.
1.2
Precautions
The operation of any appliance that uses fuel, electrical power
and water demands that a number of fundamental safety pre-
cautions be respected:
0
Do not allow children or infirm persons to operate the sys-
tem unsupervised.
0
It is forbidden to use electrical devices or equipment, such
as switches, appliances, etc. if there is a smell of gas or un-
burnt products. If so:
− Ventilate the room, opening doors and windows
declines
− Close the fuel shut-off cock
− Report the fault immediately to the
sistance Service or a professionally qualified heating en-
gineer.
0
Do not touch the boiler while barefoot or wet.
0
or pro-
Any technical or cleaning activity is forbidden before dis-
connecting the appliance from the main power supply by
switching the system's master switch and the appliance's
main switch to the "OFF" position.
0
Do not tamper with or adjust the safety or control devices
without prior authorisation and instructions from the man-
ufacturer.
0
Do not plug or block the condensate drain outlet.
0
Never pull, disconnect, or twist the electrical cables coming
from the appliance even if it is disconnected from the mains
electricity supply.
0
Do not obstruct or restrict the vents in the room where the
boiler is installed. Adequate ventilation is essential for cor-
rect combustion.
0
Do not expose the appliance to weather elements (without
using the dedicated accessory). It has been designed for in-
door use.
0
Do not switch off the appliance if the outdoor temperature
may drop to below ZERO (frost hazard).
0
Do not leave flammable containers and substances in the
room where the device is installed.
0
Do not dispose of packaging material into the environment,
or leave it within the reach of children, since it can become
a potential hazard. Dispose of packaging material in com-
pliance with applicable legislation.
0
Do not activate the thermal module without water.
0
Individuals without specific qualifications and skills are not
allowed not remove the thermal module's casing.
4
1.3
Description of the appliance
Steel Pro Power is a modular, premixed condensing system,
consisting of a cascade of modulating thermal elements in-
stalled inside a frame assembled in anodised aluminum and
painted panels.
The standard product is suitable for indoor installation, with
open chamber combustion; it can be transformed either into
sealed combustion or into indoor version by means of some
specific accessory kits that increase its electrical protection up
to IPX5D.
The cabinets are equipped with 2, 3 or 4 thermal elements from
57 up to 131 kW, for a total power of 114 up to 524 kW and are
available in versions that have low-consumption pumps ("P"
versions) or 2-way valves ("V" versions).
The models with heat-exchanger from 131 kW (270-2 P/V - 405-3
P/V - 540-4 P/V) are suitable for cascade installation, with side
by side coupling, up to a maximum of 10 total thermal elements
and a power of 1310 kW.
The optimal management of combustion allows both high effi-
ciency levels (exceeding also the 109%, value calculated on the
R
's Technical As-
PCI, under condensation) and low pollutant emissions (Class 5
according to UNI EN 297).
The main technical features of the appliance are:
− pre-mix burner with constant air-gas ratio;
− helicoidal heat exchanger with double coil with smooth
stainless steel pipe, to guarantee good corrosion resist-
ance and the option of operating with high ∆ts (up to
40°C), reducing system set-up times;
− power from 114 to 524 kW;
− maximum flue gas output temperature 100°C;
− microprocessor management and control with self-di-
agnostics, shown by means of a display, and logging of
main errors;
− Anti-Frost function;
− external probe that enables the climate control function;
− provision for room thermostat / heat request on high or
low temperature zones;
− option to manage a CH circuit and a DHW circuit with
storage tank;
− high efficiency pump with high residual head mounted
on all "P" versions
GENERAL INFORMATION
1.4
Safety devices
All the functions of each thermal element are electronically con-
trolled by a board approved to perform safety functions with
dual processor technology.
Any malfunction results in the appliance being shut down and
the automatic closure of the gas valve.
On the water circuit of each thermal element are installed:
− Safety thermostat.
− Flow sensor capable of monitoring the main circuit's
flow on an ongoing basis and of stopping the appliance
in the event of insufficient flow.
− Temperature probes on the flow and return that con-
tinuously measure the difference in temperature (∆t)
between inlet and outlet fluid and allow the control to
intervene.
On the combustion circuit of each thermal element are installed:
− Gas solenoid in class B+C , with pneumatic gas flow com-
pensation depending on the suction line's air flow rate.
− Ionisation electrode for detection.
− Flue gases temperature probe.
− The Minimum pressure switch is installed on the mani-
fold of the thermal module
9
The triggering of safety devices indicates the malfunction of
a potentially hazardous thermal module. Therefore, con-
tact Technical Assistance Service immediately. After a brief
pause, it is possible to try and restart the appliance (see
Paragraph "Initial startup").
9
Safety devices must be replaced by Technical Assistance Ser-
vice, using only original parts. Refer to the spare parts cata-
logue supplied with the appliance. After making the repair,
check that the appliance is working properly.
0
The appliance must not be put in service, even temporarily,
when tampered safety devices are not in operation or have
been tampered with.
5
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