ECONCEPT SOLAR ST
13
EN
cod. -- - 11/2010 (Rev. 00)
2. Installation
2.1 General Instructions
BOILER INSTALLATION MUST ONLY BE PERFORMED BY QUALIFIED PERSONNEL, IN ACCORDANCE WITH ALL THE
INSTRUCTIONS GIVEN IN THIS TECHNICAL MANUAL, THE PROVISIONS OF CURRENT LAW, THE PRESCRIPTIONS
OF NATIONAL STANDARDS AND LOCAL REGULATIONS AND THE RULES OF PROPER WORKMANSHIP
2.2 Place of installation
The combustion circuit is sealed with respect to the place of installation, therefore the unit can be installed in any room.
However, the place of installation must be sufficiently ventilated to prevent the creation of dangerous conditions in case
of even small gas leaks. This safety standard is required by EEC Directive no. 90/396 for all gas units, including those
with sealed chamber.
Therefore the place of installation must be free of dust, flammable materials or objects, or corrosive gases. The room
must be dry and not subject to freezing.
A
If the unit is enclosed in a cabinet or mounted alongside, a space must be provided for removing the casing
and for normal maintenance operations
2.3 Plumbing connections
Important
The heating capacity of the unit must be previously established by calculating the building's heat requirement according
to the current regulations. The system must be provided with all the components for correct and regular operation. It is
advisable to install shutoff valves between the boiler and heating system allowing the boiler to be isolated from the sys-
tem if necessary.
B
The safety valve outlet must be connected to a funnel or collection pipe to prevent water spurting onto the floor
in case of overpressure in the heating circuit. Otherwise, if the discharge valve cuts in and floods the room,
the boiler manufacturer cannot be held liable.
Do not use the water system pipes to earth electrical appliances.
Before installation, carefully wash all the pipes of the system to remove any residuals or impurities that could affect prop-
er operation of the unit.
B
Also, a filter must be installed on the system return piping to prevent impurities or sludge from the system clog-
ging and damaging the heat generators.
The filter must be installed when replacing generators in existing systems. The manufacturer declines any li-
ability for damage caused to the generator by failure to install or inadequate installation of this filter.
Carry out the relevant connections according to the diagram in sec. 4.1and the symbols given on the unit.
The unit has an internal double circulation, which enables the management of two heating zones: a
low temperature
zone (floor system)
and a
high temperature zone (radiators, towel warmers,
etc.).
Solar system
The unit has a specific internal circuit for connection to one or more external solar collectors. The internal circuit of
ECONCEPT SOLAR ST
comprises: stratified solar hot water tank with solar coil, flow limiter, filling unit, solar safety
valve, variable-speed pump and solar expansion tank. Make the corresponding connections , respecting the instructions
given below.
•
It is best to use steel or copper pipes in the solar circuit. Given the high temperatures the heat transfer fluid can
reach, the use of plastic pipes , e.g. in PE or similar materials, is not allowed. Deformation or breakage of the pipes
can cause a general system failure !
•
The widths of the pipes must be correctly sized . In particular, too large a size slows the system speed and reduces
its efficiency . To minimise pressure loss in the solar circuit, the speed of flow in the copper pipe must not exceed
1.5 m/s. For ideal transmission of heat, for the collectors a nominal flow of 40 l/h for every m2 of gross collector area
is necessary .
•
All the components of the system must be sized in order to ensure an even volumetric flow rate with the required
nominal flow rate .
•
The pipes outside the boiler must be provided with adequate thermal protection to prevent excessive heat loss. In
particular, in case if pipes laid outdoors, use insulation resistant to atmospheric agents , UV rays and bird damage.
