pressosmart prospect

PressosmartPressurisation set

Alfa Laval manufactures and sells a complete line of pres-surisation sets: the Pressosmart range. With a simple, unique design and very high reliability, these pressurisation sets allow control and efficiency, steadily maintaining constant pressure in a closed water loop. Pressurisation sets can be used in a very wide range of applications in heating, air conditioning and industrial fields where low temperature, high pressure, over-heated or chilled water closed loop systems are being used as heating or cooling sources.

When installed in a closed loop water system where tem-perature variations occur, the Pressosmart pressurisation set performs four main functions automatically:

− Maintenance of a constant and steady pressure − Expansion − Filling-up – Disconnection

Operating principleWhen water temperature rises: The internal pressure of the closed loop water system increases until it exceeds the pressure control valve setting value which then opens and lets water flow back to the open expansion vessel.

When water temperature decreases: The closed loop water system internal pressure falls until it reaches the pressure controller set point which then activates the pump(s).

Main components A pressurisation set of the Pressosmart range consists of two parts delivered separately that the contractor has to reassem-ble together on site:

A ‘’pump module’’ with a painted base frame fitted with: − One or two pumps (depending on model) − One or two pressure control valves (depending on model) − A set of black steel connecting pipes − An electronic pressure transducer (or pressure switches) − The electrical panel including the pressure controller contactors and overload protections for the pump motors

An open expansion vessel with disconnection constructed from mild steel sheets with internal/external corrosion protective coating fitted with: − A drain port − An overflow port − A port for connecting the automatic fill-up solenoid valve (delivered loose – 240V / 1Ph / 50 Hz coil) − Two ports for fitting the level control float devices − Two ports for connection of the pump module − A removable top cover enabling internal inspection of the vessel and introduction of chemical treatment products

MP5 – 400 litre tank

The above schematic shows the ‘’2 pump module’’ and the open expansion vessel which needs to be piped up together on site.

EF Cold water feed, DW Drain work connection S To the water system

1 Cold feed manual isolation valve 2 Strainer to protect the fill-up solenoid valve (option) 3 Filling-up solenoid valve – 230 V / 50 Hz coil 4 High level float switch 5 Low level float switch 6 Manual isolation valve 7 Fill-up water pump 8 Manual flow adjustment valve 9 Non-return valve 10 Main manual isolation valve (not provided) 11 Connection pipe 12 Pressure transducer or pressure switch 13 Strainer for protection of the flow control valve 14 Upstream pressure control valve (PCV) 15 Open expansion vessel 16 Drain cock 17 Control panel

P

5

P

P

1

EF

DW

S

2

3

15

L

16

6 7 89

6

14 136

14

Flex

Flex

Flex

Flex

12

17

11

10

136

7 89

4

Pressure

Ph

Open

Closed

P1 stop

P2 stop

P0 P1 run

Pb Low alarm

High alarm

Overflow valve

Neutral zone

Hst + 14

Hst + 9

Hst + 7

Hst + 2

Hst - 1

E

d d

Basic equipment

P2 run

E Hst + 5

Hst

Quick selection chart

The chart below should be used for installations utilising LPHW at 90/70°C (mean temperature of 80°C).

Example of use− Installation heating capacity: 1,800 kW − Building static height: 40 MWG

Remarks– Models in red are fitted with pumps the unitary flow rate of which equals 2/3 of the maximum expansion flow rate.

– Models in green are built on request. Please consult manufacturer or supplier for information.

– Pumps of all the other models are sized for 100% of the maximum expansion flow rate.

Please consult manufacturer or supplier for higher capacities, static heights or pipework water content.

200 400 600 800 1,000 1,500 2,000 2,500 3,000 3,500 4,000 5,000

MP 4-90 MP 4-90 MP 4-90 MP 4-90 MP 4-90

MP 4-90 MP 5-90 MP 5-90 MP 5-90 MP 5-90 MP 5-90 MP 5-90 MP 5-90 SPD 90 SPD 90 SPD 90

MP 5-90 SPD 90 SPD 90 SPD 90 SPD 90 SPD 90 SPD 90 SPD 90 CP2K 90 CP2K 90 CP2K 90 CP4K 120

SPD 90 CP2K 90 CP2K 90 CP2K 90 CP2K 90 CP2K 90 CP2K 90 CP2K 90 CP4K 80 CP4K 100 CP4K 100 27

MP 4-70 MP 4-70 MP 4-70 MP 4-70 MP 4-70




MP 195 MP 4-60 MP 4-60 MP 4-60 MP 4-60 MP 4-60




MP 195 MP 4-50 MP 4-50 MP 4-50 MP 4-50 MP 4-50




MP 195 MP 4-50 MP 4-50 MP 4-50 MP 4-50 MP 4-50




MP 195 MP 4-40 MP 4-40 MP 4-40 MP 4-40 MP 4-40




0 500 1,000 1,500 2,000 2,500 3,750 5,000 6,850 7,500 8,750 10,000 12,500

Global capacity of the installation in kW

Size of the open expansion vessel in litres

65

55

45

35

25

15

Sta

tic h

eig

ht o

f th

e in

stal

latio

n in

MW

G

Water content of the installation in m³

0 6 12 18 24 30 40 60 75 90 105 120 150

Selection− Unit model MP 4-60, MP 5-60, SPD 60 or CP2K 60 − 800 litre expansion vessel

Number of pumps

Number of PCV (1)

Electrical supply

Power input kW

FLA A (2)

Static height MWG (3)

Weight without tank kg (4)

Connection size (5)

MP 195 S1

1 1230 V 1 Ph

50 Hz

0.8 3.8 35 96

DN 25 1"

MP 195 S2 0.9 4.2 45 96

MP 195 L1 0.8 3.8 35 96

MP 195 L2 0.9 4.2 45 96

MP 4 30

1 1230 V 1 Ph

50 Hz

0.6 2.4 15 45

DN 25 1"

MP 4 50 0.8 3.8 35 47

MP 4 60 0.9 4.2 45 48

MP 4 70 0.75 5.1 55 60

MP 4 90 1.1 7.5 65 65

MP 5 30

2 1 or 2230 V 1 Ph

50 Hz

1.2 4.8 15 57

DN 40 1½"

MP 5 50 1.6 7.6 35 58

MP 5 60 1.8 8.4 45 61

MP 5 70 1.5 10.2 55 87

MP 5 90 2.2 15.0 65 90

SPD 30

2 1 or 2400 V + N

3 Ph 50 Hz

0.75 1.92 15 100

DN 50 2"

SPD 40 1.1 2.88 15 102

SPD 50 1.6 2.88 35 102

SPD 60 1.8 3.72 45 106

SPD 70 1.5 3.72 55 108

SPD 90 2.2 5.30 65 110

CP 2 K 30

2 1 or 2400 V + N

3 Ph 50 Hz

0.75 1.92 15 105

DN 50 2"

CP 2 K 40 1.1 2.88 15 107

CP 2 K 50 1.6 2.88 35 107

CP 2 K 60 1.8 3.72 45 113

CP 2 K 70 1.5 3.72 55 115

CP 2 K 90 2.2 5.30 65 117

ECE00007EN 0509

How to contact Alfa LavalUp-to-date Alfa Laval contact details for all countries are always available on our website at www.alfalaval.com

All rights reserved for changes in specifications

General features

(1) PCV stands for Pressure Control Valve (Upstream pressure actually controlled) (2) When operating at full load conditions under 230/1/50 (400/3/50 for SPD and CP2K)

Options 89 micron core water strainer – For protection of the expansion vessel fill-up solenoid valve. – To be fitted in the cold water feed pipe upstream of the fill-up solenoid valve.

Anti-water hammer– To be fitted every time the distance of the pipe connecting the Pressosmart pressurisation set to the installation is significant. – Standard for the MP 195 range.

Impulsion meter– Memorises the normal operation of the installation regarding complementary water fill-up. – Should their frequency or duration be increasing, the

pressurisation set would be shutdown and an alarm would be triggered (in case of pipework leakage for example).

Fill-up bypassEnables a rapid fill-up of the water system through a manual valve (normally closed) bypassing the automatic fill-up system.

Flood detector– Allows detection of the presence of water at ground level in the plant room where the Pressosmart pressurisation set is installed. – The sensor is fixed onto the side of the pump module base frame. To be made on site by others.

(3) Building maximum static height (4) Weight without the open expansion vessel except for models MP 195 (5) Minimum diameter for the connection pipe to the installation

pressosmart prospect

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