Cordivari Bolly1 PDC, User Manual

Page: 10 / 36

- 10 -
Cod. 1910000001149 - nv02
English
User Manual
1. General
This document is intended for the installer and final user. Therefore, after
plant installation and start-up, ensure that this document has been deliv
-
ered to the final user or managing supervisor of the plant.
The hot water storage tanks 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, fixed or external ex
-
changers on the Hot water storage tank, 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 in
-
dicated 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 compli
-
ance with directive 2014/68/EU (PED) relative to pressure equipment
with contained liquid and according to operating conditions provided
for use.
Category identification
(Specification EN 12897:2006 - Directive 2014/68/EU, 2009/125/CE,
2010/30/CE)
The Hot water storage tanks have been tested in compliance of standard
EN 12897:2006.
The entire range of Hot water storage tanks 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 atmos -
pheric pressure (1013 mbar), maximum operating pressure PS > 10
bar, product PS ∙ V > 10,000 [bar ∙ L], PS > 1000 bar;
• Piping for water containment (group 2) with vapour pressure at max -
imum permitted temperature less 0.5 bar over normal atmospheric
pressure (1013 mbar), maximum operating pressure PS > 10 bar, di
-
ameter DN > 200 and product PS ∙ DN < 5000 [bar ∙ mm].
Therefore, all Hot water storage tanks, in accordance with Art.4.3. and
as shown in attached tables 4 and 9, must not be CE marked. However,
the manifacturer guarantees standard manufacturing procedure as es
-
tablished by the directive (according to Quality management and quali -
ty assurance standards UNI EN ISO 9001:2000 – UNI EN 14001:2004)
which ensures user safety and manufacturer identification.
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 ∙ Volume must not exceed 50 bar ∙ litre according
the formula:
P∙V ≤ 50 [bar ∙ l]
So, given the volume of fluid in the heat exchanger, it’s possible to calcu -
late, 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 de
-
signed and tested according to regulation 2014/68/EU PED are required.
2. Installation and maintenance
Hot water storage tanks must always be installed sheltered from atmos -
pheric agents, on adequately solid bases and, before any connections
are made, making sure that there is sufficient space for exchanger, mag -
nesium anode and resistance extraction.
• If in some periods of the year, the places where are installed the hot
water storage tank 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 lev -
elling of the tank you need to use the provided adjustable feet with the
rosettes (OPTIONAL), making sure you fasten the locknut (see detail
in diagrams). To avoid breaking the insulation, lift the tank from the
ground using spacers on all three feet.
DP
De
DH
DL1
DL2
DP
DF
DF
DU
Illustration No. 1 - Minimum distances:
DH = DU DF DP = DL1 DL2
180 mm = De 400 mm 200 mm