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1. General
This document is intended for the installer and fi nal user. Therefore,
after plant installation and start-up, ensure that this document has
been delivered to the fi nal user or managing supervisor of the plant.
Cordivari water heaters have been designed and constructed for the
production and storage of sanitary hot water by means of a heat
exchanger obtained with the help of extractable, fi xed or external
exchangers on the Water heater, powered by sources of thermal
energy of various types (Heat generator, Heat Pump, Solar panel)
which use water as a thermal carrier liquid.
Any use of this product which is not in accordance with information
indicated in this document shall release the manufacturer from all
liability and will void all aspects of the guarantee.
Products described in this document have been constructed in
compliance with directive 97/23/CE (PED) relative to pressure
equipment with contained liquid and according to operating conditions
provided for use.
Category identifi cation
(Specifi cation EN 12897:2006 - Directive 97/23/CE)
The Bolly Water heaters has been designed in accordance with
specifi cation EN 12897:2006 and have been tested according to
provisions of this standard.
The entire range of Cordivari Water heaters have lower levels than
the threshold values described as follows:
• Receptacle for water containment (group 2) with a vapour pressure
at maximum permitted temperature less than 0.5 bar over normal
atmospheric pressure (1033 mbar), maximum operating pressure
PS > 10 bar, product PSxV > 10,000 [bar x L], PS > 1000 bar;
• Piping for water containment (group 2) with vapour pressure
at maximum permitted temperature less 0.5 bar over normal
atmospheric pressure (1033 mbar), maximum operating pressure
PS > 10 bar, diameter DN > 200 and product PS x DN < 5000 [bar
xmm].
Therefore, all Cordivari Water heaters, in accordance with Art.3.3.
and as shown in attached tables 4 and 5, must not be CE marked.
However, Cordivari S.r.l. guarantees standard manufacturing
procedure as established by the directive (according to Quality
management and quality assurance standards UNI EN ISO
9001:2000 – UNI EN 14001:2004) which ensures user safety and
manufacturer identifi cation.
For Heat exchanger used in solar thermal systems (or another
type of plant) with temperature > 110° C in the primary circuit, it is
recommended to dimension the system so that:
• The primary circuit temperature does not exceed the temperature of
140° C (to be reached only for limited periods of time).
• The max working pressure meets the following limitation:
the product: Pressure exchanger x Volume must not exceed 50 bar
∙ litre according the formula:
P • V ≤ 50 [bar • l]
So, given the volume of fl uid in the heat exchanger, it's possible to
calculate, with the above formula, the maximum admissible pressure
for each heat exchanger.
Beyond these limits the heat exchanger (as well as the plant) is
subject to the requirements for pressure equipment (design, checks
at the plant and in operation, periodic retraining etc) and therefore
heat exchangers designed and tested according to regulation 97/23/
EC PED are required.
2. Installation and maintenance
Water heaters must always be installed sheltered from atmospheric
agents, on adequately solid bases and, before any connections
are made, making sure that there is suffi cient space for exchanger,
magnesium anode and resistance extraction.
• If in some periods of the year, the places where are installed the
water heater or the pipelines are subject to temperatures < 0°C, It
is necessary to provide for adequate protection against frost, such
as, for example, the control of temperature with a thermostat in the
premises or programmed reheat cycles of the heating generator or
auxiliary resistance (not supplied).
• With regard to the 150 to 500 litre capacity versions, for a correct
levelling of the tank you need to use the provided adjustable feet
with the rosettes (OPTIONAL), making sure you fasten the locknut
BS_70
(see detail in diagrams). To avoid breaking the insulation, lift the
tank from the ground using spacers on all three feet.
• Verify that the position where Water heaters are to open are large
enough to allow for free passage toward the outside without any
need for demolition. The guarantee does not cover any costs
derived from a failure to observe this point.
• Ensure that the position where the Water heater is to be installed
is equipped with a draining (outlet) system suitable for the tank and
any other equipment volume. The guarantee does not cover any
costs derived from failure to observe this point.
De
DP
(1)
DP
(14)
• Minimum distances:
DH
Water Heater
[mm]
BOLLY FIT
250
BOLLY AP
250
BOLLY XL 200 lt
500
BOLLY XL 300 lt
700
BOLLY XL 500 lt
900
• Handling phases requiring movement of equipment with weight
exceeding 30 kg and require the use of proper hoisting and transport
means. For this purpose, receptacles are to be moved only when
empty by means of special platforms or hoisting eyebolts.
• Verify the presence of magnesium anodes upon installation and
GB
DF
DF
DP= DL1
DL2
DF
[mm]
[mm]
= De
400
200
= De
400
200
= De
400
200
= De
400
200
= De
400
200
CORDIVARI - 16
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