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De Dietrich DIETRISOL TRIO DT 250 Manual

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TRIO DT 250 - TRIO DT 350 16/07/2015 - 300028005-001-04
3.3 Main parts
Dietrisol TRIO DT is a high performance solar DHW tank/calorifier
designed to be connected to Dietrisol NEO or POWER solar
collectors and an De Dietrich central heating boiler.
It is designed in such a way as to be able to cope with a solar collector
surface area of up to 4.5 m
2
(DT 250) and 6.5 m
2
(DT 350) under the
conditions set out in the chapter "Hydraulic Connection Primary Solar
Circuit".
tank
The high quality steel tank is lined with food standard quality
vitrified enamel, which protects it from corrosion and preserves
all the qualities of the domestic water.
The Dietrisol TRIO DT tank is fitted with 2 heat exchangers per
zone for solar heating and one heat exchanger for
supplementary heating by means of a fuel oil or gas boiler.
Protection against corrosion
The tank is also protected from corrosion by two magnesium
anodes which must be inspected every 2 years and replaced if
necessary.
Heat exchanger
The thermal exchanger welded into the tank is made of smooth
piping, the inside of which, which is in contact with the domestic
water, is enamelled.
Insulation
The tank is strongly insulated with high strength rigid
polyurethane foam with no chlorofluorocarbons (CFC), 50 mm
thick to minimise heat loss.
Casing
The outside casing is made of painted steel sheeting.
The top and side covers are made of ABS.
Solar station
The solar heating pump unit comprises the solar circuit safety
unit, a pressure and temperature gauge and a flowmeter to
visualise circulation of the solar fluid between the collectors and
the DHW tank. An expansion vessel is connected to the solar
unit; it is used to compensate for the expansion of the solar fluid
in which the temperature varies between 0 and 150°C.
Sol Plus TRIO regulator
The control system is the solar system's brain; it makes the solar
heating pump run at variable speeds according to the difference
in temperature between the bottom of the DHW tank and the
solar collectors. The control system manages the set point
temperature (temperature to be attained in the DHW tank),
overheating and nighttime cooling. The control system also
displays the various operating modes, the temperatures in the
collectors and in the bottom of the DHW tank, as well as
signalling any malfunctions.
1
Pressure gauge - Primary solar circuit
2
Safety control unit for the solar circuit (6 bar)
3
Blue thermometer (tank solar heat exchangers outlet)
4
Red thermometer (tank solar heat exchangers inlet)
5
Primary solar circuit pump
6
Manual bleed degasser
7
2-position 3-way directional valve
8
Sol Plus TRIO regulator
9
8 l/6 bar expansion vessel, 2-bar pre-load
10
Automatic connection for expansion vessel
11
Primary solar circuit filling and draining device
12
Magnesium anode
13
Electric heating resistance
14
Magnesium anode
… 8 …


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