VT_user manual-eng / rev.04 Page 3 – April 2015
VT_user manual-eng
CAPACITY
WEIGHT
(*)
CONNECTIONS
litres
kg
E-U
T / SD
SF / S
inches
inches
inches
100
25
1”¼
½”
1”¼
200
40
2”
½”
1”¼
300
50
2”½
½”
1”¼
500
70
3”
½”
1”¼
800
90
3”
½”
1”¼
1000
105
3”
½”
1”¼
1500
200
3”
½”
1”¼
2000
240
3”
½”
1”¼
2500
280
3”
½”
1”¼
3000
300
4”
½”
1”¼
4000
450
4”
½”
1”¼
5000
530
4”
½”
1”¼
(*)
Indicative value, valid only for transportation and handling purposes
Description
The Pacetti VT series of chilled water vessels are utilised to store chilled water produced by an external chiller or chilled source.
There are 5 models with 2 of the models fitted with flow dividers or a perforated plate to avoid flow paths.
All models are provided as standard with threaded connections, but may be also equipped with flanged connections on request.
These chilled vessels are available both in black carbon or galvanized steel and stainless steel.
The black carbon steel tanks are used in case of indoor installation, therefore it is not required any kind of coating against corrosion.
The galvanized steel tanks can be also used in case of outdoor installation, when it is necessary to ensure corrosion and weather protection.
The stainless steel tanks are treated with pickling process and are suitable for indoor or outdoor installations.
All models can be manufactured in vertical or horizontal arrangement.
Protection coating against corrosion
HOT DIP GALVANIZING
This kind of coating is performed on carbon steel vessels by immersion of the tank in a molten zinc bath at 450°C according to UNI EN ISO 1461.
METAL PICKLING
It’s a metal surface treatment used to remove impurities after manufacturing processes. The tank is dipped into a solution called pickle liquor which contains strong acids able
to remove contaminants.
Thermal insulation against condensation
HARD FOAM POLYURETHANE
Hard foam polyurethane injected
Made of hard foam polyurethane 30mm thick, density of 40 to 42 kg/m3, average conductivity of 0.024 W/mK. CFC and HCFC free.
Closed cell elastomer foam
Made of closed cell elastomer foam sheets 20mm thick, density of 30 kg/m3, average conductivity of 0.034 W/mK. CFC and HCFC free.
Insulation
Tank capacity
Density
Thermal conductivity coefficient
Hard foam polyurethane injected 30 mm
100 ÷ 1000 l
40÷42 kg/m3
= 0,024 W/mK
Closed-cell elastomer foam 20 mm
1500 ÷ 5000 l
30 kg/m3
= 0,034 W/mK
External cladding is available in coloured PVC with zipper fastening or embossed aluminium 0.4mm thick for outdoor installations.
Operation
The Pacetti VT series of chilled water vessels are used in air conditioning and cooling systems when the water content of the plant is reduced. When installed between user and
chillers, these tanks can limit frequent compressor starts and allow a regular functioning of the plant at a constant temperature, avoiding timer intervention.
Models
The Pacetti VT series of chilled water vessels are available in different models:
VT-G
Black carbon steel
VT-Z
Galvanized steel
VT-X
Stainless steel 316
VTS
Black carbon steel with perforated central divider plate
VTP
Black carbon steel with multiple flow dividers
Conformity
The Pacetti VT series of chilled water vessels are made with automatic welding processes.
All manufacturing processes are guaranteed by the Quality Management System of the Company, certified to ISO 9001.
All Pacetti products are subject to hydraulic tests at 1.5 * maximum working pressure and comply with the following standard:
European Pressure Equipment Directive 97/23/CE – Art.3.3
(pressure vessels) - excluded from CE mark.
Cooke Industries - Phone: +64-9-579 2185 Fax: +64-9-579 2181 Email: sales@cookeindustries.co.nz Web: www.cookeindustries.co.nz
